Merge branch 'develop' of https://github.com/taosdata/TDengine into develop

CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-SET(TD_SYNC FALSE)
 SET(TD_ACCOUNT FALSE)
 SET(TD_ADMIN FALSE)
 SET(TD_GRANT FALSE)

cmake/define.inc

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-IF (TD_SYNC)
-  ADD_DEFINITIONS(-D_SYNC)
-ENDIF ()
-
 IF (TD_ACCOUNT)
   ADD_DEFINITIONS(-D_ACCT)
 ENDIF ()

cmake/env.inc

@@ -9,7 +9,6 @@ SET(LIBRARY_OUTPUT_PATH ${PROJECT_BINARY_DIR}/build/lib)
 SET(EXECUTABLE_OUTPUT_PATH ${PROJECT_BINARY_DIR}/build/bin)
 SET(TD_TESTS_OUTPUT_DIR ${PROJECT_BINARY_DIR}/test)
 
-MESSAGE(STATUS "Operating system dependency directory: " ${TD_OS_DIR})
 MESSAGE(STATUS "Project source directory: " ${PROJECT_SOURCE_DIR})
 MESSAGE(STATUS "Project binary files output path: " ${PROJECT_BINARY_DIR})
 MESSAGE(STATUS "Project executable files output path: " ${EXECUTABLE_OUTPUT_PATH})

cmake/platform.inc

@@ -33,20 +33,23 @@ IF (${CPUTYPE} MATCHES "aarch32")
   SET(TD_PAGMODE_LITE TRUE)
   ADD_DEFINITIONS(-D_TD_ARM_)
   ADD_DEFINITIONS(-D_TD_ARM_32_)
+  MESSAGE(STATUS "input cpuType: aarch32")
 ELSEIF (${CPUTYPE} MATCHES "aarch64")
   SET(TD_ARM TRUE)
   SET(TD_ARM_64 TRUE)
   ADD_DEFINITIONS(-D_TD_ARM_)
   ADD_DEFINITIONS(-D_TD_ARM_64_)
+   MESSAGE(STATUS "input cpuType: aarch64")
 ELSEIF (${CPUTYPE} MATCHES "mips64")
   SET(TD_MIPS TRUE)
   SET(TD_MIPS_64 TRUE)
   ADD_DEFINITIONS(-D_TD_MIPS_)
   ADD_DEFINITIONS(-D_TD_MIPS_64_)
+  MESSAGE(STATUS "input cpuType: mips64")
 ELSEIF (${CPUTYPE} MATCHES "x64")
-  MESSAGE(STATUS "input cpuType: " ${CPUTYPE})
+  MESSAGE(STATUS "input cpuType: x64")
 ELSEIF (${CPUTYPE} MATCHES "x86")
-  MESSAGE(STATUS "input cpuType: " ${CPUTYPE})
+  MESSAGE(STATUS "input cpuType: x86")
 ELSE ()
   MESSAGE(STATUS "input cpuType: " ${CPUTYPE})
 ENDIF ()
@@ -61,13 +64,13 @@ MESSAGE(STATUS "The current os is " ${TD_OS_INFO})
 IF (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
   IF (${CMAKE_SIZEOF_VOID_P} MATCHES 8)
     SET(TD_LINUX_64 TRUE)
-    SET(TD_OS_DIR ${TD_COMMUNITY_DIR}/src/os/linux)
     ADD_DEFINITIONS(-D_M_X64)
+    ADD_DEFINITIONS(-D_TD_LINUX_64)
     MESSAGE(STATUS "The current platform is Linux 64-bit")
   ELSEIF (${CMAKE_SIZEOF_VOID_P} MATCHES 4)
+    SET(TD_LINUX_32 TRUE)
+    ADD_DEFINITIONS(-D_TD_LINUX_32)
     IF (TD_ARM)
-      SET(TD_LINUX_32 TRUE)
-      SET(TD_OS_DIR ${TD_COMMUNITY_DIR}/src/os/linux)
       #ADD_DEFINITIONS(-D_M_IX86)
       MESSAGE(STATUS "The current platform is Linux 32-bit")
     ELSE ()
@@ -81,7 +84,7 @@ IF (${CMAKE_SYSTEM_NAME} MATCHES "Linux")
 ELSEIF (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
   IF (${CMAKE_SIZEOF_VOID_P} MATCHES 8)
     SET(TD_DARWIN_64 TRUE)
-    SET(TD_OS_DIR ${TD_COMMUNITY_DIR}/src/os/darwin)
+    ADD_DEFINITIONS(-D_TD_DARWIN_64)
     MESSAGE(STATUS "The current platform is Darwin 64-bit")
   ELSE ()
     MESSAGE(FATAL_ERROR "The current platform is Darwin 32-bit, not supported yet")
@@ -90,10 +93,12 @@ ELSEIF (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
 ELSEIF (${CMAKE_SYSTEM_NAME} MATCHES "Windows")
   IF (${CMAKE_SIZEOF_VOID_P} MATCHES 8)
     SET(TD_WINDOWS_64 TRUE)
-    SET(TD_OS_DIR ${TD_COMMUNITY_DIR}/src/os/windows)
     ADD_DEFINITIONS(-D_M_X64)
+    ADD_DEFINITIONS(-D_TD_WINDOWS_64)
     MESSAGE(STATUS "The current platform is Windows 64-bit")
   ELSE ()
+    SET(TD_WINDOWS_32 TRUE)
+    ADD_DEFINITIONS(-D_TD_WINDOWS_32)
     MESSAGE(FATAL_ERROR "The current platform is Windows 32-bit, not supported yet")
     EXIT ()
   ENDIF ()

documentation/webdocs/markdowndocs/TAOS SQL-ch.md

@@ -556,7 +556,7 @@ TDengine支持针对数据的聚合查询。提供支持的聚合和选择函数
     功能说明：统计表中某列的值百分比分位数。  
     返回结果数据类型： 双精度浮点数Double。  
     应用字段：不能应用在timestamp、binary、nchar、bool类型字段。  
-    说明：*k*值取值范围0≤*k*≤100，为0的时候等同于MIN，为100的时候等同于MAX。
+    说明：*k*值取值范围0≤*P*≤100，为0的时候等同于MIN，为100的时候等同于MAX。
 
 - **APERCENTILE**
     ```mysql
@@ -565,7 +565,7 @@ TDengine支持针对数据的聚合查询。提供支持的聚合和选择函数
     功能说明：统计表中某列的值百分比分位数，与PERCENTILE函数相似，但是返回近似结果。  
     返回结果数据类型： 双精度浮点数Double。  
     应用字段：不能应用在timestamp、binary、nchar、bool类型字段。  
-    说明：*k*值取值范围0≤*k*≤100，为0的时候等同于MIN，为100的时候等同于MAX。推荐使用```APERCENTILE```函数，该函数性能远胜于```PERCENTILE```函数
+    说明：*k*值取值范围0≤*P*≤100，为0的时候等同于MIN，为100的时候等同于MAX。推荐使用```APERCENTILE```函数，该函数性能远胜于```PERCENTILE```函数
     
 - **LAST_ROW**
     ```mysql

documentation/webdocs/markdowndocs/TAOS SQL.md

@@ -289,10 +289,10 @@ TDengine supports aggregations over numerical values, they are listed below:
     Applied to: table/STable. 
 
 
-- **WAVG**
+- **TWA**
   
     ```mysql
-    SELECT WAVG(field_name) FROM tb_name WHERE clause
+    SELECT TWA(field_name) FROM tb_name WHERE clause
     ```
     Function: return the time-weighted average value of a specific column  
     Return Data Type: `double`  
@@ -324,7 +324,7 @@ TDengine supports aggregations over numerical values, they are listed below:
 
 - **LEASTSQUARES**
     ```mysql
-    SELECT LEASTSQUARES(field_name) FROM tb_name [WHERE clause]
+    SELECT LEASTSQUARES(field_name, start_val, step_val) FROM tb_name [WHERE clause]
     ```
     Function: performs a linear fit to the primary timestamp and the specified column. 
     Return Data Type: return a string of the coefficient and the interception of the fitted line.  
@@ -417,6 +417,15 @@ TDengine supports aggregations over numerical values, they are listed below:
     Applied to: table/STable.  
     Note: The range of `P` is `[0, 100]`. When `P=0` , `PERCENTILE` returns the equal value as `MIN`; when `P=100`, `PERCENTILE` returns the equal value as `MAX`. 
 
+- **APERCENTILE**
+    ```mysql
+    SELECT APERCENTILE(field_name, P) FROM { tb_name | stb_name } [WHERE clause]
+    ```
+    Function: the value of the specified column below which `P` percent of the data points fall, it returns approximate value of percentile.
+    Return Data Type: double.  
+    Applicable Data Types: all types except `timestamp`, `binary`, `nchar`, `bool`. 
+    Applied to: table/STable.  
+    Note: The range of `P` is `[0, 100]`. When `P=0` , `APERCENTILE` returns the equal value as `MIN`; when `P=100`, `APERCENTILE` returns the equal value as `MAX`. `APERCENTILE` has a much better performance than `PERCENTILE`.
 
 - **LAST_ROW**
     ```mysql

src/CMakeLists.txt

@@ -10,6 +10,8 @@ ADD_SUBDIRECTORY(client)
 ADD_SUBDIRECTORY(query)
 ADD_SUBDIRECTORY(kit)
 ADD_SUBDIRECTORY(plugins)
+ADD_SUBDIRECTORY(sync)
+ADD_SUBDIRECTORY(balance)
 ADD_SUBDIRECTORY(mnode)
 ADD_SUBDIRECTORY(vnode)
 ADD_SUBDIRECTORY(tsdb)

src/balance/CMakeLists.txt

+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+PROJECT(TDengine)
+
+IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/mnode/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/dnode/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/sdb/inc)
+  INCLUDE_DIRECTORIES(${TD_ENTERPRISE_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(inc)
+  AUX_SOURCE_DIRECTORY(src SRC)
+  ADD_LIBRARY(balance ${SRC})
+ENDIF ()

src/client/CMakeLists.txt

@@ -4,11 +4,11 @@ PROJECT(TDengine)
 INCLUDE_DIRECTORIES(inc)
 INCLUDE_DIRECTORIES(jni)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
 INCLUDE_DIRECTORIES(${TD_ENTERPRISE_DIR}/src/inc)
-INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
 AUX_SOURCE_DIRECTORY(src SRC)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))

src/client/src/tscParseInsert.c

@@ -104,7 +104,7 @@ int tsParseTime(SSQLToken *pToken, int64_t *time, char **next, char *error, int1
   } else if (strncmp(pToken->z, "0", 1) == 0 && pToken->n == 1) {
     // do nothing
   } else if (pToken->type == TK_INTEGER) {
-    useconds = str2int64(pToken->z);
+    useconds = tsosStr2int64(pToken->z);
   } else {
     // strptime("2001-11-12 18:31:01", "%Y-%m-%d %H:%M:%S", &tm);
     if (taosParseTime(pToken->z, time, pToken->n, timePrec, tsDaylight) != TSDB_CODE_SUCCESS) {

src/client/src/tscSystem.c

@@ -220,7 +220,7 @@ static int taos_options_imp(TSDB_OPTION option, const char *pStr) {
 
         if (strlen(tsLocale) == 0) { // locale does not set yet
           char* defaultLocale = setlocale(LC_CTYPE, "");
-          tstrncpy(tsLocale, defaultLocale, sizeof(tsLocale));
+          tstrncpy(tsLocale, defaultLocale, TSDB_LOCALE_LEN);
         }
 
         // set the user specified locale
@@ -234,7 +234,7 @@ static int taos_options_imp(TSDB_OPTION option, const char *pStr) {
           tscInfo("failed to set locale:%s, current locale:%s", pStr, tsLocale);
         }
 
-        tstrncpy(tsLocale, locale, sizeof(tsLocale));
+        tstrncpy(tsLocale, locale, TSDB_LOCALE_LEN);
 
         char *charset = strrchr(tsLocale, sep);
         if (charset != NULL) {
@@ -249,7 +249,7 @@ static int taos_options_imp(TSDB_OPTION option, const char *pStr) {
               tscInfo("charset changed from %s to %s", tsCharset, charset);
             }
 
-            tstrncpy(tsCharset, charset, sizeof(tsCharset));
+            tstrncpy(tsCharset, charset, TSDB_LOCALE_LEN);
             cfg->cfgStatus = TAOS_CFG_CSTATUS_OPTION;
 
           } else {
@@ -286,7 +286,7 @@ static int taos_options_imp(TSDB_OPTION option, const char *pStr) {
             tscInfo("charset changed from %s to %s", tsCharset, pStr);
           }
 
-          tstrncpy(tsCharset, pStr, sizeof(tsCharset));
+          tstrncpy(tsCharset, pStr, TSDB_LOCALE_LEN);
           cfg->cfgStatus = TAOS_CFG_CSTATUS_OPTION;
         } else {
           tscInfo("charset:%s not valid", pStr);
@@ -304,7 +304,7 @@ static int taos_options_imp(TSDB_OPTION option, const char *pStr) {
       assert(cfg != NULL);
     
       if (cfg->cfgStatus <= TAOS_CFG_CSTATUS_OPTION) {
-        tstrncpy(tsTimezone, pStr, sizeof(tsTimezone));
+        tstrncpy(tsTimezone, pStr, TSDB_TIMEZONE_LEN);
         tsSetTimeZone();
         cfg->cfgStatus = TAOS_CFG_CSTATUS_OPTION;
         tscDebug("timezone set:%s, input:%s by taos_options", tsTimezone, pStr);

src/common/CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
-  INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
-  INCLUDE_DIRECTORIES(inc)
-  AUX_SOURCE_DIRECTORY(src SRC)
-  ADD_LIBRARY(common ${SRC})
-  TARGET_LINK_LIBRARIES(common tutil)
-ENDIF ()
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
+INCLUDE_DIRECTORIES(inc)
+
+AUX_SOURCE_DIRECTORY(src SRC)
+ADD_LIBRARY(common ${SRC})
+TARGET_LINK_LIBRARIES(common tutil)

src/common/inc/tglobal.h

@@ -43,9 +43,9 @@ extern uint32_t tsMaxTmrCtrl;
 extern float    tsNumOfThreadsPerCore;
 extern float    tsRatioOfQueryThreads;
 extern int8_t   tsDaylight;
-extern char     tsTimezone[64];
-extern char     tsLocale[64];
-extern char     tsCharset[64];  // default encode string
+extern char     tsTimezone[];
+extern char     tsLocale[];
+extern char     tsCharset[];  // default encode string
 extern int32_t  tsEnableCoreFile;
 extern int32_t  tsCompressMsgSize;
 

src/common/src/tglobal.c

@@ -50,7 +50,7 @@ int32_t tsShellActivityTimer = 3;  // second
 float   tsNumOfThreadsPerCore = 1.0;
 float   tsRatioOfQueryThreads = 0.5;
 int8_t  tsDaylight = 0;
-char    tsTimezone[64] = {0};
+char    tsTimezone[TSDB_TIMEZONE_LEN] = {0};
 char    tsLocale[TSDB_LOCALE_LEN] = {0};
 char    tsCharset[TSDB_LOCALE_LEN] = {0};  // default encode string
 int32_t tsEnableCoreFile = 0;

src/cq/CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
 INCLUDE_DIRECTORIES(inc)

src/cq/test/CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
-  INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
-  INCLUDE_DIRECTORIES(../inc)
-
-  LIST(APPEND CQTEST_SRC ./cqtest.c)
-  ADD_EXECUTABLE(cqtest ${CQTEST_SRC})
-  TARGET_LINK_LIBRARIES(cqtest tcq)
-
-ENDIF ()
-
-
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/cq/inc)
+
+LIST(APPEND CQTEST_SRC ./cqtest.c)
+ADD_EXECUTABLE(cqtest ${CQTEST_SRC})
+TARGET_LINK_LIBRARIES(cqtest tcq)

src/dnode/CMakeLists.txt

@@ -2,8 +2,8 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
-  INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/mnode/inc)
@@ -16,7 +16,7 @@ IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   AUX_SOURCE_DIRECTORY(src SRC)
 
   ADD_EXECUTABLE(taosd ${SRC})
-  TARGET_LINK_LIBRARIES(taosd mnode taos_static monitor http mqtt tsdb twal vnode cJson lz4)
+  TARGET_LINK_LIBRARIES(taosd mnode taos_static monitor http mqtt tsdb twal vnode cJson lz4 balance sync)
 
   IF (TD_ACCOUNT)
     TARGET_LINK_LIBRARIES(taosd account)
@@ -26,10 +26,6 @@ IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
     TARGET_LINK_LIBRARIES(taosd grant)
   ENDIF ()
 
-  IF (TD_SYNC)
-    TARGET_LINK_LIBRARIES(taosd balance sync)
-  ENDIF ()
-
   SET(PREPARE_ENV_CMD "prepare_env_cmd")
   SET(PREPARE_ENV_TARGET "prepare_env_target")
   ADD_CUSTOM_COMMAND(OUTPUT ${PREPARE_ENV_CMD}

src/dnode/src/dnodeSystem.c

@@ -20,7 +20,6 @@
 #include "tglobal.h"
 #include "dnodeInt.h"
 #include "dnodeMain.h"
-#include "tfile.h"
 
 static void signal_handler(int32_t signum, siginfo_t *sigInfo, void *context);
 static sem_t exitSem;
@@ -40,7 +39,7 @@ int32_t main(int32_t argc, char *argv[]) {
         exit(EXIT_FAILURE);
       }
     } else if (strcmp(argv[i], "-V") == 0) {
-#ifdef _SYNC
+#ifdef _ACCT
       char *versionStr = "enterprise";
 #else
       char *versionStr = "community";

src/inc/taosdef.h

@@ -250,7 +250,7 @@ void tsDataSwap(void *pLeft, void *pRight, int32_t type, int32_t size);
 #define TSDB_STATE_LEN            20
 #define TSDB_COUNTRY_LEN          20
 #define TSDB_LOCALE_LEN           64
-#define TSDB_TIMEZONE_LEN         64
+#define TSDB_TIMEZONE_LEN         96
 #define TSDB_LABEL_LEN            8 
 
 #define TSDB_FQDN_LEN             128

src/kit/shell/CMakeLists.txt

@@ -2,11 +2,11 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
-INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
 INCLUDE_DIRECTORIES(inc)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))

src/kit/taosdemo/CMakeLists.txt

@@ -2,9 +2,9 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
-INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
 INCLUDE_DIRECTORIES(inc)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))

src/kit/taosdump/CMakeLists.txt

@@ -2,11 +2,11 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
-INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
 INCLUDE_DIRECTORIES(inc)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))

src/kit/taosdump/taosdump.c

@@ -545,7 +545,7 @@ int32_t taosSaveAllNormalTableToTempFile(TAOS *taosCon, char*meter, char* metric
   strcpy(tableRecord.name, meter);
   strcpy(tableRecord.metric, metric);
 
-  twrite(*fd, &tableRecord, sizeof(STableRecord));
+  taosTWrite(*fd, &tableRecord, sizeof(STableRecord));
   return 0;
 }
 
@@ -600,7 +600,7 @@ int32_t taosSaveTableOfMetricToTempFile(TAOS *taosCon, char* metric, struct argu
     strncpy(tableRecord.name, (char *)row[0], fields[0].bytes);
     strcpy(tableRecord.metric, metric);
 
-    twrite(fd, &tableRecord, sizeof(STableRecord));
+    taosTWrite(fd, &tableRecord, sizeof(STableRecord));
 
     numOfTable++;
 
@@ -1196,7 +1196,7 @@ int32_t taosDumpCreateSuperTableClause(TAOS* taosCon, char* dbName, FILE *fp)
   while ((row = taos_fetch_row(tmpResult)) != NULL) {  
     memset(&tableRecord, 0, sizeof(STableRecord));
     strncpy(tableRecord.name, (char *)row[TSDB_SHOW_TABLES_NAME_INDEX], fields[TSDB_SHOW_TABLES_NAME_INDEX].bytes);
-    twrite(fd, &tableRecord, sizeof(STableRecord));
+    taosTWrite(fd, &tableRecord, sizeof(STableRecord));
   }  
   
   taos_free_result(tmpResult);
@@ -1282,7 +1282,7 @@ int taosDumpDb(SDbInfo *dbInfo, struct arguments *arguments, FILE *fp, TAOS *tao
     strncpy(tableRecord.name, (char *)row[TSDB_SHOW_TABLES_NAME_INDEX], fields[TSDB_SHOW_TABLES_NAME_INDEX].bytes);
     strncpy(tableRecord.metric, (char *)row[TSDB_SHOW_TABLES_METRIC_INDEX], fields[TSDB_SHOW_TABLES_METRIC_INDEX].bytes);
 
-    twrite(fd, &tableRecord, sizeof(STableRecord));
+    taosTWrite(fd, &tableRecord, sizeof(STableRecord));
 
     numOfTable++;
 

src/kit/taosmigrate/CMakeLists.txt

@@ -2,8 +2,8 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
-  INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/mnode/inc) 
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/vnode/inc)

src/mnode/CMakeLists.txt

@@ -2,8 +2,8 @@ CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
-  INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)

src/mnode/src/mnodeDb.c

@@ -301,13 +301,6 @@ static int32_t mnodeCheckDbCfg(SDbCfg *pCfg) {
     return TSDB_CODE_MND_INVALID_DB_OPTION;
   }
 
-#ifndef _SYNC
-  if (pCfg->replications != 1) {
-    mError("invalid db option replications:%d can only be 1 in this version", pCfg->replications);
-    return TSDB_CODE_MND_INVALID_DB_OPTION;
-  }
-#endif
-
   return TSDB_CODE_SUCCESS;
 }
 

src/mnode/src/mnodeDnode.c

@@ -79,9 +79,6 @@ static int32_t mnodeDnodeActionInsert(SSdbOper *pOper) {
 static int32_t mnodeDnodeActionDelete(SSdbOper *pOper) {
   SDnodeObj *pDnode = pOper->pObj;
  
-#ifndef _SYNC 
-  mnodeDropAllDnodeVgroups(pDnode);
-#endif  
   mnodeDropMnodeLocal(pDnode->dnodeId);
   balanceAsyncNotify();
 
@@ -552,12 +549,7 @@ static int32_t mnodeDropDnodeByEp(char *ep, SMnodeMsg *pMsg) {
 
   mInfo("dnode:%d, start to drop it", pDnode->dnodeId);
 
-#ifndef _SYNC
-  int32_t code = mnodeDropDnode(pDnode, pMsg);
-#else
   int32_t code = balanceDropDnode(pDnode);
-#endif
-
   mnodeDecDnodeRef(pDnode);
   return code;
 }

src/os/CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-ADD_SUBDIRECTORY(linux)
-ADD_SUBDIRECTORY(windows)
-ADD_SUBDIRECTORY(darwin)
+IF (TD_LINUX_64)
+  ADD_SUBDIRECTORY(src/linux64)
+ELSEIF (TD_LINUX_32)
+  ADD_SUBDIRECTORY(src/linux32)
+ELSEIF (TD_DARWIN_64)
+  ADD_SUBDIRECTORY(src/darwin64)  
+ELSEIF (TD_WINDOWS_64)
+  ADD_SUBDIRECTORY(src/windows64)
+ELSEIF (TD_WINDOWS_32)
+  ADD_SUBDIRECTORY(src/windows32)
+ENDIF ()
+
+ADD_SUBDIRECTORY(src/detail)

src/os/darwin/CMakeLists.txt

-CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
-PROJECT(TDengine)
-
-IF (TD_DARWIN_64)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
-  INCLUDE_DIRECTORIES(inc)
-  AUX_SOURCE_DIRECTORY(src SRC)
-  ADD_LIBRARY(os ${SRC})
-ENDIF ()

src/os/inc/os.h

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TDENGINE_OS_H
+#define TDENGINE_OS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef _TD_DARWIN_64
+#include "osDarwin64.h"
+#endif
+
+#ifdef _TD_LINUX_64
+#include "osLinux64.h"
+#endif
+
+#ifdef _TD_LINUX_32
+#include "osLinux32.h"
+#endif
+
+#ifdef _TD_ALPINE
+#include "osAlpine.h"
+#endif
+
+#ifdef _TD_WINDOWS_64
+#include "osWindows64.h"
+#endif
+
+#ifdef _TD_WINDOWS_32
+#include "osWindows32.h"
+#endif
+
+#include "osSpec.h"
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/os/inc/osAlpine.h

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TDENGINE_OS_LINUX64_H
+#define TDENGINE_OS_LINUX64_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <argp.h>
+#include <arpa/inet.h>
+#include <assert.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <endian.h>
+#include <errno.h>
+#include <float.h>
+#include <ifaddrs.h>
+#include <libgen.h>
+#include <limits.h>
+#include <locale.h>
+#include <math.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+#include <pthread.h>
+#include <pwd.h>
+#include <regex.h>
+#include <semaphore.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+#include <strings.h>
+#include <sys/epoll.h>
+#include <sys/eventfd.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/sendfile.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/statvfs.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <syslog.h>
+#include <termios.h>
+#include <unistd.h>
+#include <wchar.h>
+#include <wordexp.h>
+#include <wctype.h>
+#include <inttypes.h>
+#include <fcntl.h>
+#include <sys/utsname.h>
+#include <sys/resource.h>
+#include <linux/sysctl.h>
+
+typedef int(*__compar_fn_t)(const void *, const void *);
+void  error (int, int, const char *);
+#ifndef PTHREAD_MUTEX_RECURSIVE_NP
+  #define  PTHREAD_MUTEX_RECURSIVE_NP PTHREAD_MUTEX_RECURSIVE
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/os/darwin/inc/os.h → src/os/inc/osDarwin64.h

@@ -201,6 +201,8 @@ int tsem_destroy(dispatch_semaphore_t *sem);
 
 void osInit();
 
+ssize_t tread(int fd, void *buf, size_t count);
+
 ssize_t twrite(int fd, void *buf, size_t n);
 
 char *taosCharsetReplace(char *charsetstr);
@@ -233,6 +235,8 @@ int fsendfile(FILE* out_file, FILE* in_file, int64_t* offset, int32_t count);
 
 void taosSetCoreDump();
 
+int tSystem(const char * cmd);
+
 typedef int(*__compar_fn_t)(const void *, const void *);
 
 // for send function in tsocket.c
@@ -255,6 +259,17 @@ typedef int(*__compar_fn_t)(const void *, const void *);
 #define BUILDIN_CLZ(val)  __builtin_clz(val)
 #define BUILDIN_CTZ(val)  __builtin_ctz(val)
 
+#undef threadlocal
+#ifdef _ISOC11_SOURCE
+  #define threadlocal _Thread_local
+#elif defined(__APPLE__)
+  #define threadlocal
+#elif defined(__GNUC__) && !defined(threadlocal)
+  #define threadlocal __thread
+#else
+  #define threadlocal
+#endif
+
 #ifdef __cplusplus
 }
 #endif

src/os/inc/osLinux32.h

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TDENGINE_OS_LINUX64_H
+#define TDENGINE_OS_LINUX64_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+
+#include <argp.h>
+#include <arpa/inet.h>
+#include <assert.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <endian.h>
+#include <errno.h>
+#include <float.h>
+#include <ifaddrs.h>
+#include <libgen.h>
+#include <limits.h>
+#include <locale.h>
+#include <math.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+#include <pthread.h>
+#include <pwd.h>
+#include <regex.h>
+#include <semaphore.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+#include <strings.h>
+#include <sys/epoll.h>
+#include <sys/eventfd.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/sendfile.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/statvfs.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <syslog.h>
+#include <termios.h>
+#include <unistd.h>
+#include <wchar.h>
+#include <wordexp.h>
+#include <wctype.h>
+#include <inttypes.h>
+#include <fcntl.h>
+#include <sys/utsname.h>
+#include <sys/resource.h>
+#include <error.h>
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/os/inc/osLinux64.h

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TDENGINE_OS_LINUX64_H
+#define TDENGINE_OS_LINUX64_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <argp.h>
+#include <arpa/inet.h>
+#include <assert.h>
+#include <ctype.h>
+#include <dirent.h>
+#include <endian.h>
+#include <errno.h>
+#include <float.h>
+#include <ifaddrs.h>
+#include <libgen.h>
+#include <limits.h>
+#include <locale.h>
+#include <math.h>
+#include <netdb.h>
+#include <netinet/in.h>
+#include <netinet/ip.h>
+#include <netinet/tcp.h>
+#include <netinet/udp.h>
+#include <pthread.h>
+#include <pwd.h>
+#include <regex.h>
+#include <semaphore.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdint.h>
+#include <string.h>
+#include <strings.h>
+#include <sys/epoll.h>
+#include <sys/eventfd.h>
+#include <sys/file.h>
+#include <sys/ioctl.h>
+#include <sys/mman.h>
+#include <sys/sendfile.h>
+#include <sys/socket.h>
+#include <sys/stat.h>
+#include <sys/syscall.h>
+#include <sys/statvfs.h>
+#include <sys/time.h>
+#include <sys/types.h>
+#include <sys/uio.h>
+#include <sys/un.h>
+#include <syslog.h>
+#include <termios.h>
+#include <unistd.h>
+#include <wchar.h>
+#include <wordexp.h>
+#include <wctype.h>
+#include <inttypes.h>
+#include <fcntl.h>
+#include <sys/utsname.h>
+#include <sys/resource.h>
+#include <error.h>
+#include <linux/sysctl.h>
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/os/inc/osSpec.h

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TDENGINE_OS_SPEC_H
+#define TDENGINE_OS_SPEC_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifndef TAOS_OS_FUNC_MATH
+  #define SWAP(a, b, c)        \
+    do {                       \
+        typeof(a) __tmp = (a); \
+        (a) = (b);             \
+        (b) = __tmp;           \
+    } while (0)
+
+  #define MAX(a, b)              \
+    ({                           \
+        typeof(a) __a = (a);     \
+        typeof(b) __b = (b);     \
+        (__a > __b) ? __a : __b; \
+    })
+
+  #define MIN(a, b)              \
+    ({                           \
+        typeof(a) __a = (a);     \
+        typeof(b) __b = (b);     \
+        (__a < __b) ? __a : __b; \
+    })
+#endif
+
+#ifndef TAOS_OS_DEF_TIME
+  #define MILLISECOND_PER_SECOND ((int64_t)1000L)
+#endif
+
+#ifndef TAOS_OS_FUNC_SEMPHONE
+  #define tsem_t sem_t
+  #define tsem_init sem_init
+  #define tsem_wait sem_wait
+  #define tsem_post sem_post
+  #define tsem_destroy sem_destroy
+#endif
+
+#ifndef TAOS_OS_FUNC_ATOMIC
+  #define atomic_load_8(ptr) __atomic_load_n((ptr), __ATOMIC_SEQ_CST)
+  #define atomic_load_16(ptr) __atomic_load_n((ptr), __ATOMIC_SEQ_CST)
+  #define atomic_load_32(ptr) __atomic_load_n((ptr), __ATOMIC_SEQ_CST)
+  #define atomic_load_64(ptr) __atomic_load_n((ptr), __ATOMIC_SEQ_CST)
+  #define atomic_load_ptr(ptr) __atomic_load_n((ptr), __ATOMIC_SEQ_CST)
+
+  #define atomic_store_8(ptr, val) __atomic_store_n((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_store_16(ptr, val) __atomic_store_n((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_store_32(ptr, val) __atomic_store_n((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_store_64(ptr, val) __atomic_store_n((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_store_ptr(ptr, val) __atomic_store_n((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_exchange_8(ptr, val) __atomic_exchange_n((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_exchange_16(ptr, val) __atomic_exchange_n((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_exchange_32(ptr, val) __atomic_exchange_n((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_exchange_64(ptr, val) __atomic_exchange_n((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_exchange_ptr(ptr, val) __atomic_exchange_n((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_val_compare_exchange_8 __sync_val_compare_and_swap
+  #define atomic_val_compare_exchange_16 __sync_val_compare_and_swap
+  #define atomic_val_compare_exchange_32 __sync_val_compare_and_swap
+  #define atomic_val_compare_exchange_64 __sync_val_compare_and_swap
+  #define atomic_val_compare_exchange_ptr __sync_val_compare_and_swap
+
+  #define atomic_add_fetch_8(ptr, val) __atomic_add_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_add_fetch_16(ptr, val) __atomic_add_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_add_fetch_32(ptr, val) __atomic_add_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_add_fetch_64(ptr, val) __atomic_add_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_add_fetch_ptr(ptr, val) __atomic_add_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_fetch_add_8(ptr, val) __atomic_fetch_add((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_add_16(ptr, val) __atomic_fetch_add((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_add_32(ptr, val) __atomic_fetch_add((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_add_64(ptr, val) __atomic_fetch_add((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_add_ptr(ptr, val) __atomic_fetch_add((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_sub_fetch_8(ptr, val) __atomic_sub_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_sub_fetch_16(ptr, val) __atomic_sub_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_sub_fetch_32(ptr, val) __atomic_sub_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_sub_fetch_64(ptr, val) __atomic_sub_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_sub_fetch_ptr(ptr, val) __atomic_sub_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_fetch_sub_8(ptr, val) __atomic_fetch_sub((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_sub_16(ptr, val) __atomic_fetch_sub((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_sub_32(ptr, val) __atomic_fetch_sub((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_sub_64(ptr, val) __atomic_fetch_sub((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_sub_ptr(ptr, val) __atomic_fetch_sub((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_and_fetch_8(ptr, val) __atomic_and_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_and_fetch_16(ptr, val) __atomic_and_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_and_fetch_32(ptr, val) __atomic_and_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_and_fetch_64(ptr, val) __atomic_and_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_and_fetch_ptr(ptr, val) __atomic_and_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_fetch_and_8(ptr, val) __atomic_fetch_and((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_and_16(ptr, val) __atomic_fetch_and((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_and_32(ptr, val) __atomic_fetch_and((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_and_64(ptr, val) __atomic_fetch_and((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_and_ptr(ptr, val) __atomic_fetch_and((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_or_fetch_8(ptr, val) __atomic_or_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_or_fetch_16(ptr, val) __atomic_or_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_or_fetch_32(ptr, val) __atomic_or_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_or_fetch_64(ptr, val) __atomic_or_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_or_fetch_ptr(ptr, val) __atomic_or_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_fetch_or_8(ptr, val) __atomic_fetch_or((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_or_16(ptr, val) __atomic_fetch_or((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_or_32(ptr, val) __atomic_fetch_or((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_or_64(ptr, val) __atomic_fetch_or((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_or_ptr(ptr, val) __atomic_fetch_or((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_xor_fetch_8(ptr, val) __atomic_xor_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_xor_fetch_16(ptr, val) __atomic_xor_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_xor_fetch_32(ptr, val) __atomic_xor_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_xor_fetch_64(ptr, val) __atomic_xor_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_xor_fetch_ptr(ptr, val) __atomic_xor_fetch((ptr), (val), __ATOMIC_SEQ_CST)
+
+  #define atomic_fetch_xor_8(ptr, val) __atomic_fetch_xor((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_xor_16(ptr, val) __atomic_fetch_xor((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_xor_32(ptr, val) __atomic_fetch_xor((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_xor_64(ptr, val) __atomic_fetch_xor((ptr), (val), __ATOMIC_SEQ_CST)
+  #define atomic_fetch_xor_ptr(ptr, val) __atomic_fetch_xor((ptr), (val), __ATOMIC_SEQ_CST)
+#endif
+
+ssize_t taosTReadImp(int fd, void *buf, size_t count);
+ssize_t taosTWriteImp(int fd, void *buf, size_t count);
+ssize_t taosTSendFileImp(int dfd, int sfd, off_t *offset, size_t size);
+#ifndef TAOS_OS_FUNC_FILE
+  #define taosTRead(fd, buf, count) taosTReadImp(fd, buf, count)
+  #define taosTWrite(fd, buf, count) taosTWriteImp(fd, buf, count)
+  #define taosLSeek(fd, offset, whence) lseek(fd, offset, whence)
+  #define taosTSendFile(dfd, sfd, offset, size) taosTSendFileImp(dfd, sfd, offset, size)
+#endif
+
+#ifdef TAOS_RANDOM_FILE_FAIL
+  void taosSetRandomFileFailFactor(int factor);
+  void taosSetRandomFileFailOutput(const char *path);
+  ssize_t taosReadFileRandomFail(int fd, void *buf, size_t count, const char *file, uint32_t line);
+  ssize_t taosWriteFileRandomFail(int fd, void *buf, size_t count, const char *file, uint32_t line);
+  off_t taosLSeekRandomFail(int fd, off_t offset, int whence, const char *file, uint32_t line);
+  #define taosTRead(fd, buf, count) taosReadFileRandomFail(fd, buf, count, __FILE__, __LINE__)
+  #define taosTWrite(fd, buf, count) taosWriteFileRandomFail(fd, buf, count, __FILE__, __LINE__)
+  #define taosLSeek(fd, offset, whence) taosLSeekRandomFail(fd, offset, whence, __FILE__, __LINE__)
+#endif
+
+#ifndef TAOS_OS_FUNC_NETWORK
+  #define taosSend(sockfd, buf, len, flags) send(sockfd, buf, len, flags)
+  #define taosSendto(sockfd, buf, len, flags, dest_addr, addrlen) sendto(sockfd, buf, len, flags, dest_addr, addrlen)
+  #define taosReadSocket(fd, buf, len) read(fd, buf, len)
+  #define taosWriteSocket(fd, buf, len) write(fd, buf, len)
+  #define taosCloseSocket(x) \
+    {                        \
+      if (FD_VALID(x)) {     \
+        close(x);            \
+        x = FD_INITIALIZER;  \
+      }                      \
+    }
+#endif
+
+#ifdef TAOS_RANDOM_NETWORK_FAIL
+  ssize_t taosSendRandomFail(int sockfd, const void *buf, size_t len, int flags);
+  ssize_t taosSendToRandomFail(int sockfd, const void *buf, size_t len, int flags, const struct sockaddr *dest_addr, socklen_t addrlen);
+  ssize_t taosReadSocketRandomFail(int fd, void *buf, size_t count);
+  ssize_t taosWriteSocketRandomFail(int fd, const void *buf, size_t count);
+  #define taosSend(sockfd, buf, len, flags) taosSendRandomFail(sockfd, buf, len, flags)
+  #define taosSendto(sockfd, buf, len, flags, dest_addr, addrlen) taosSendToRandomFail(sockfd, buf, len, flags, dest_addr, addrlen)
+  #define taosReadSocket(fd, buf, len) taosReadSocketRandomFail(fd, buf, len)
+  #define taosWriteSocket(fd, buf, len) taosWriteSocketRandomFail(fd, buf, len)
+#endif
+
+#ifndef TAOS_OS_FUNC_LZ4
+  #define BUILDIN_CLZL(val) __builtin_clzl(val)
+  #define BUILDIN_CTZL(val) __builtin_ctzl(val)
+  #define BUILDIN_CLZ(val) __builtin_clz(val)
+  #define BUILDIN_CTZ(val) __builtin_ctz(val)
+#endif
+
+#undef threadlocal
+#ifdef _ISOC11_SOURCE
+  #define threadlocal _Thread_local
+#elif defined(__APPLE__)
+  #define threadlocal
+#elif defined(__GNUC__) && !defined(threadlocal)
+  #define threadlocal __thread
+#else
+  #define threadlocal
+#endif
+
+void osInit();
+
+// TAOS_OS_FUNC_PTHREAD
+bool taosCheckPthreadValid(pthread_t thread);
+int64_t taosGetPthreadId();
+
+// TAOS_OS_FUNC_SOCKET
+int taosSetNonblocking(int sock, int on);
+int taosSetSockOpt(int socketfd, int level, int optname, void *optval, int optlen);
+void taosBlockSIGPIPE();
+
+// TAOS_OS_FUNC_SYSINFO
+void taosGetSystemInfo();
+void taosPrintOsInfo();
+void taosKillSystem();
+int tSystem(const char * cmd) ;
+
+// TAOS_OS_FUNC_CORE
+void taosSetCoreDump();
+
+// TAOS_OS_FUNC_UTIL
+int64_t tsosStr2int64(char *str);
+
+// TAOS_OS_FUNC_TIMER
+void taosMsleep(int mseconds);
+int taosInitTimer(void (*callback)(int), int ms);
+void taosUninitTimer();
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

src/os/inc/osWindows32.h

+/*
+* Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+*
+* This program is free software: you can use, redistribute, and/or modify
+* it under the terms of the GNU Affero General Public License, version 3
+* or later ("AGPL"), as published by the Free Software Foundation.
+*
+* This program is distributed in the hope that it will be useful, but WITHOUT
+* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+* FITNESS FOR A PARTICULAR PURPOSE.
+*
+* You should have received a copy of the GNU Affero General Public License
+* along with this program. If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef TDENGINE_PLATFORM_WINDOWS32_H
+#define TDENGINE_PLATFORM_WINDOWS32_H
+
+#include <assert.h>
+#include <ctype.h>
+#include <direct.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <float.h>
+#include <locale.h>
+#include <intrin.h>
+#include <io.h>
+#include <math.h>
+#include <pthread.h>
+#include <semaphore.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <signal.h>
+#include <sys/stat.h>
+#include <sys/types.h>
+#include <time.h>
+#include <inttypes.h>
+#include "winsock2.h"
+#include <WS2tcpip.h>
+#include <winbase.h>
+#include <Winsock2.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+#endif
\ No newline at end of file

src/os/windows/inc/os.h → src/os/inc/osWindows64.h

@@ -78,10 +78,10 @@ extern "C" {
 #define wcsncasecmp _wcsnicmp
 #define strtok_r strtok_s
 #ifdef _TD_GO_DLL_
-  int64_t str2int64(char *str);
+  int64_t tsosStr2int64(char *str);
   uint64_t htonll(uint64_t val);
 #else
-  #define str2int64 _atoi64
+  #define tsosStr2int64 _atoi64
 #endif
 
 #define snprintf _snprintf

src/os/linux/inc/os.h

-/*
- * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
- *
- * This program is free software: you can use, redistribute, and/or modify
- * it under the terms of the GNU Affero General Public License, version 3
- * or later ("AGPL"), as published by the Free Software Foundation.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
- * FITNESS FOR A PARTICULAR PURPOSE.
- *
- * You should have received a copy of the GNU Affero General Public License
- * along with this program. If not, see <http://www.gnu.org/licenses/>.
- */
-
-#ifndef TDENGINE_PLATFORM_LINUX_H
-#define TDENGINE_PLATFORM_LINUX_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-
-#include <argp.h>
-#include <arpa/inet.h>
-#include <assert.h>
-#include <ctype.h>
-#include <dirent.h>
-#include <endian.h>
-#include <errno.h>
-#include <float.h>
-#include <ifaddrs.h>
-#include <libgen.h>
-#include <limits.h>
-#include <locale.h>
-#include <math.h>
-#include <netdb.h>
-#include <netinet/in.h>
-#include <netinet/ip.h>
-#include <netinet/tcp.h>
-#include <netinet/udp.h>
-#include <pthread.h>
-#include <pwd.h>
-#include <regex.h>
-#include <semaphore.h>
-#include <signal.h>
-#include <stdarg.h>
-#include <stdbool.h>
-#include <stddef.h>
-#include <stdint.h>
-#include <string.h>
-#include <strings.h>
-#include <sys/epoll.h>
-#include <sys/eventfd.h>
-#include <sys/file.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/sendfile.h>
-#include <sys/socket.h>
-#include <sys/stat.h>
-#include <sys/syscall.h>
-#include <sys/statvfs.h>
-#include <sys/time.h>
-#include <sys/types.h>
-#include <sys/uio.h>
-#include <sys/un.h>
-#include <syslog.h>
-#include <termios.h>
-#include <unistd.h>
-#include <wchar.h>
-#include <wordexp.h>
-#include <wctype.h>
-#include <inttypes.h>
-#include <fcntl.h>
-#include <sys/utsname.h>
-#include <sys/resource.h>
-#include <error.h>
-
-#define taosCloseSocket(x) \
-  {                        \
-    if (FD_VALID(x)) {     \
-      close(x);            \
-      x = FD_INITIALIZER;  \
-    }                      \
-  }
-  
-#ifdef TAOS_RANDOM_NETWORK_FAIL
-
-ssize_t taos_send_random_fail(int sockfd, const void *buf, size_t len, int flags);
-
-ssize_t taos_sendto_random_fail(int sockfd, const void *buf, size_t len, int flags,
-                      const struct sockaddr *dest_addr, socklen_t addrlen);
-ssize_t taos_read_random_fail(int fd, void *buf, size_t count);
-ssize_t taos_write_random_fail(int fd, const void *buf, size_t count);
-
-#define send(sockfd, buf, len, flags) taos_send_random_fail(sockfd, buf, len, flags)
-#define sendto(sockfd, buf, len, flags, dest_addr, addrlen) \
-          taos_sendto_random_fail(sockfd, buf, len, flags, dest_addr, addrlen)
-#define taosWriteSocket(fd, buf, len) taos_write_random_fail(fd, buf, len)
-#define taosReadSocket(fd, buf, len) taos_read_random_fail(fd, buf, len)
-
-#else
-
-#define taosWriteSocket(fd, buf, len) write(fd, buf, len)
-#define taosReadSocket(fd, buf, len) read(fd, buf, len)
-
-#endif  /* TAOS_RANDOM_NETWORK_FAIL */
-
-#define atomic_load_8(ptr) __atomic_load_n((ptr), __ATOMIC_SEQ_CST)
-#define atomic_load_16(ptr) __atomic_load_n((ptr), __ATOMIC_SEQ_CST)
-#define atomic_load_32(ptr) __atomic_load_n((ptr), __ATOMIC_SEQ_CST)
-#define atomic_load_64(ptr) __atomic_load_n((ptr), __ATOMIC_SEQ_CST)
-#define atomic_load_ptr(ptr) __atomic_load_n((ptr), __ATOMIC_SEQ_CST)
-
-#define atomic_store_8(ptr, val) __atomic_store_n((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_store_16(ptr, val) __atomic_store_n((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_store_32(ptr, val) __atomic_store_n((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_store_64(ptr, val) __atomic_store_n((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_store_ptr(ptr, val) __atomic_store_n((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_exchange_8(ptr, val) __atomic_exchange_n((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_exchange_16(ptr, val) __atomic_exchange_n((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_exchange_32(ptr, val) __atomic_exchange_n((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_exchange_64(ptr, val) __atomic_exchange_n((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_exchange_ptr(ptr, val) __atomic_exchange_n((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_val_compare_exchange_8 __sync_val_compare_and_swap
-#define atomic_val_compare_exchange_16 __sync_val_compare_and_swap
-#define atomic_val_compare_exchange_32 __sync_val_compare_and_swap
-#define atomic_val_compare_exchange_64 __sync_val_compare_and_swap
-#define atomic_val_compare_exchange_ptr __sync_val_compare_and_swap
-
-#define atomic_add_fetch_8(ptr, val) __atomic_add_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_add_fetch_16(ptr, val) __atomic_add_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_add_fetch_32(ptr, val) __atomic_add_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_add_fetch_64(ptr, val) __atomic_add_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_add_fetch_ptr(ptr, val) __atomic_add_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_fetch_add_8(ptr, val) __atomic_fetch_add((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_add_16(ptr, val) __atomic_fetch_add((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_add_32(ptr, val) __atomic_fetch_add((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_add_64(ptr, val) __atomic_fetch_add((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_add_ptr(ptr, val) __atomic_fetch_add((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_sub_fetch_8(ptr, val) __atomic_sub_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_sub_fetch_16(ptr, val) __atomic_sub_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_sub_fetch_32(ptr, val) __atomic_sub_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_sub_fetch_64(ptr, val) __atomic_sub_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_sub_fetch_ptr(ptr, val) __atomic_sub_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_fetch_sub_8(ptr, val) __atomic_fetch_sub((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_sub_16(ptr, val) __atomic_fetch_sub((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_sub_32(ptr, val) __atomic_fetch_sub((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_sub_64(ptr, val) __atomic_fetch_sub((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_sub_ptr(ptr, val) __atomic_fetch_sub((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_and_fetch_8(ptr, val) __atomic_and_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_and_fetch_16(ptr, val) __atomic_and_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_and_fetch_32(ptr, val) __atomic_and_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_and_fetch_64(ptr, val) __atomic_and_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_and_fetch_ptr(ptr, val) __atomic_and_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_fetch_and_8(ptr, val) __atomic_fetch_and((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_and_16(ptr, val) __atomic_fetch_and((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_and_32(ptr, val) __atomic_fetch_and((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_and_64(ptr, val) __atomic_fetch_and((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_and_ptr(ptr, val) __atomic_fetch_and((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_or_fetch_8(ptr, val) __atomic_or_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_or_fetch_16(ptr, val) __atomic_or_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_or_fetch_32(ptr, val) __atomic_or_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_or_fetch_64(ptr, val) __atomic_or_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_or_fetch_ptr(ptr, val) __atomic_or_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_fetch_or_8(ptr, val) __atomic_fetch_or((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_or_16(ptr, val) __atomic_fetch_or((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_or_32(ptr, val) __atomic_fetch_or((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_or_64(ptr, val) __atomic_fetch_or((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_or_ptr(ptr, val) __atomic_fetch_or((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_xor_fetch_8(ptr, val) __atomic_xor_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_xor_fetch_16(ptr, val) __atomic_xor_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_xor_fetch_32(ptr, val) __atomic_xor_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_xor_fetch_64(ptr, val) __atomic_xor_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_xor_fetch_ptr(ptr, val) __atomic_xor_fetch((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define atomic_fetch_xor_8(ptr, val) __atomic_fetch_xor((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_xor_16(ptr, val) __atomic_fetch_xor((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_xor_32(ptr, val) __atomic_fetch_xor((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_xor_64(ptr, val) __atomic_fetch_xor((ptr), (val), __ATOMIC_SEQ_CST)
-#define atomic_fetch_xor_ptr(ptr, val) __atomic_fetch_xor((ptr), (val), __ATOMIC_SEQ_CST)
-
-#define SWAP(a, b, c)      \
-  do {                     \
-    typeof(a) __tmp = (a); \
-    (a) = (b);             \
-    (b) = __tmp;           \
-  } while (0)
-
-#define MAX(a, b)            \
-  ({                         \
-    typeof(a) __a = (a);     \
-    typeof(b) __b = (b);     \
-    (__a > __b) ? __a : __b; \
-  })
-
-#define MIN(a, b)            \
-  ({                         \
-    typeof(a) __a = (a);     \
-    typeof(b) __b = (b);     \
-    (__a < __b) ? __a : __b; \
-  })
-
-#define MILLISECOND_PER_SECOND ((int64_t)1000L)
-
-#define tsem_t sem_t
-#define tsem_init sem_init
-#define tsem_wait sem_wait
-#define tsem_post sem_post
-#define tsem_destroy sem_destroy
-
-void osInit();
-
-ssize_t tsendfile(int dfd, int sfd, off_t *offset, size_t size);
-
-ssize_t twrite(int fd, void *buf, size_t n);
-
-ssize_t tread(int fd, void *buf, size_t count);
-
-bool taosCheckPthreadValid(pthread_t thread);
-
-void taosResetPthread(pthread_t *thread);
-
-int64_t taosGetPthreadId();
-
-int taosSetNonblocking(int sock, int on);
-
-int taosSetSockOpt(int socketfd, int level, int optname, void *optval, int optlen);
-
-void taosPrintOsInfo();
-
-char *taosCharsetReplace(char *charsetstr);
-
-void taosGetSystemInfo();
-
-void taosKillSystem();
-
-bool taosSkipSocketCheck();
-
-int64_t str2int64(char *str);
-
-void taosSetCoreDump();
-
-void taosBlockSIGPIPE();
-
-int tSystem(const char * cmd) ;
-
-
-#ifdef _ALPINE
-  typedef int(*__compar_fn_t)(const void *, const void *);
-  void  error (int, int, const char *);
-  #ifndef PTHREAD_MUTEX_RECURSIVE_NP
-    #define  PTHREAD_MUTEX_RECURSIVE_NP PTHREAD_MUTEX_RECURSIVE
-  #endif
-#endif
-
-#ifndef _TD_ARM_32_
-#define BUILDIN_CLZL(val) __builtin_clzl(val)
-#define BUILDIN_CTZL(val) __builtin_ctzl(val)
-#else
-#define BUILDIN_CLZL(val) __builtin_clzll(val)
-#define BUILDIN_CTZL(val) __builtin_ctzll(val)
-#endif
-#define BUILDIN_CLZ(val) __builtin_clz(val)
-#define BUILDIN_CTZ(val) __builtin_ctz(val)
-
-#undef threadlocal
-#ifdef _ISOC11_SOURCE
-  #define threadlocal _Thread_local
-#elif defined(__APPLE__)
-  #define threadlocal
-#elif defined(__GNUC__) && !defined(threadlocal)
-  #define threadlocal __thread
-#else
-  #define threadlocal
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif

src/os/src/alpine/CMakeLists.txt

+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+PROJECT(TDengine)
+
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
+AUX_SOURCE_DIRECTORY(. SRC)
+
+ADD_LIBRARY(os ${SRC})
+TARGET_LINK_LIBRARIES(os m rt)
+

src/os/linux/CMakeLists.txt → src/os/src/darwin64/CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
-  INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
+IF (TD_DARWIN_64)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
   INCLUDE_DIRECTORIES(inc)
   AUX_SOURCE_DIRECTORY(src SRC)
-
   ADD_LIBRARY(os ${SRC})
-  TARGET_LINK_LIBRARIES(os m rt)
 ENDIF ()
 
-SET_SOURCE_FILES_PROPERTIES(src/linuxSysPara.c PROPERTIES COMPILE_FLAGS -w)

src/os/darwin/src/darwinPlatform.c → src/os/src/darwin64/darwinPlatform.c

@@ -15,12 +15,15 @@
 
 #define _DEFAULT_SOURCE
 #include "os.h"
-#include "tglobal.h"
+#include "os.h"
 #include "taosdef.h"
-#include "tutil.h"
+#include "tglobal.h"
+#include "tconfig.h"
+#include "ttimer.h"
 #include "tulog.h"
+#include "tutil.h"
 
-int64_t str2int64(char *str) {
+int64_t tsosStr2int64(char *str) {
   char *endptr = NULL;
   return strtoll(str, &endptr, 10);
 }
@@ -159,12 +162,14 @@ int taosInitTimer(void (*callback)(int), int ms) {
   tv.it_interval.tv_usec = 1000 * ms;  // resolution is in msecond
   tv.it_value = tv.it_interval;
 
-  return setitimer(ITIMER_REAL, &tv, NULL);
+  setitimer(ITIMER_REAL, &tv, NULL);
+
+  return 0;
 }
 
 void taosUninitTimer() {
   struct itimerval tv = { 0 };
-  return setitimer(ITIMER_REAL, &tv, NULL);
+  setitimer(ITIMER_REAL, &tv, NULL);
 }
 
 void taosGetSystemTimezone() {
@@ -207,7 +212,7 @@ void taosGetSystemLocale() {
 void taosPrintOsInfo() {}
 
 void taosKillSystem() {
-  tError("function taosKillSystem, exit!");
+  uError("function taosKillSystem, exit!");
   exit(0);
 }
 
@@ -221,95 +226,75 @@ void taosGetSystemInfo() {
 }
 
 void *taosInitTcpClient(char *ip, uint16_t port, char *flabel, int num, void *fp, void *shandle) {
-  tError("function taosInitTcpClient is not implemented in darwin system, exit!");
+  uError("function taosInitTcpClient is not implemented in darwin system, exit!");
   exit(0);
 }
 
 void taosCloseTcpClientConnection(void *chandle) {
-  tError("function taosCloseTcpClientConnection is not implemented in darwin system, exit!");
+  uError("function taosCloseTcpClientConnection is not implemented in darwin system, exit!");
   exit(0);
 }
 
 void *taosOpenTcpClientConnection(void *shandle, void *thandle, char *ip, uint16_t port) {
-  tError("function taosOpenTcpClientConnection is not implemented in darwin system, exit!");
+  uError("function taosOpenTcpClientConnection is not implemented in darwin system, exit!");
   exit(0);
 }
 
 int taosSendTcpClientData(unsigned int ip, uint16_t port, char *data, int len, void *chandle) {
-  tError("function taosSendTcpClientData is not implemented in darwin system, exit!");
+  uError("function taosSendTcpClientData is not implemented in darwin system, exit!");
   exit(0);
 }
 
 void taosCleanUpTcpClient(void *chandle) {
-  tError("function taosCleanUpTcpClient is not implemented in darwin system, exit!");
+  uError("function taosCleanUpTcpClient is not implemented in darwin system, exit!");
   exit(0);
 }
 
 void taosCloseTcpServerConnection(void *chandle) {
-  tError("function taosCloseTcpServerConnection is not implemented in darwin system, exit!");
+  uError("function taosCloseTcpServerConnection is not implemented in darwin system, exit!");
   exit(0);
 }
 
 void taosCleanUpTcpServer(void *handle) {
-  tError("function taosCleanUpTcpServer is not implemented in darwin system, exit!");
+  uError("function taosCleanUpTcpServer is not implemented in darwin system, exit!");
   exit(0);
 }
 
 void *taosInitTcpServer(char *ip, uint16_t port, char *label, int numOfThreads, void *fp, void *shandle) {
-  tError("function taosInitTcpServer is not implemented in darwin system, exit!");
+  uError("function taosInitTcpServer is not implemented in darwin system, exit!");
   exit(0);
 }
 
 int taosSendTcpServerData(unsigned int ip, uint16_t port, char *data, int len, void *chandle) {
-  tError("function taosSendTcpServerData is not implemented in darwin system, exit!");
+  uError("function taosSendTcpServerData is not implemented in darwin system, exit!");
   exit(0);
 }
 
 void taosFreeMsgHdr(void *hdr) {
-  tError("function taosFreeMsgHdr is not implemented in darwin system, exit!");
+  uError("function taosFreeMsgHdr is not implemented in darwin system, exit!");
   exit(0);
 }
 
 int taosMsgHdrSize(void *hdr) {
-  tError("function taosMsgHdrSize is not implemented in darwin system, exit!");
+  uError("function taosMsgHdrSize is not implemented in darwin system, exit!");
   exit(0);
 }
 
 void taosSendMsgHdr(void *hdr, int fd) {
-  tError("function taosSendMsgHdr is not implemented in darwin system, exit!");
+  uError("function taosSendMsgHdr is not implemented in darwin system, exit!");
   exit(0);
 }
 
 void taosInitMsgHdr(void **hdr, void *dest, int maxPkts) {
-  tError("function taosInitMsgHdr is not implemented in darwin system, exit!");
+  uError("function taosInitMsgHdr is not implemented in darwin system, exit!");
   exit(0);
 }
 
 void taosSetMsgHdrData(void *hdr, char *data, int dataLen) {
-  tError("function taosSetMsgHdrData is not implemented in darwin system, exit!");
+  uError("function taosSetMsgHdrData is not implemented in darwin system, exit!");
   exit(0);
 }
 
-ssize_t twrite(int fd, void *buf, size_t n) {
-  size_t nleft = n; 
-  ssize_t nwritten = 0;
-  char *tbuf = (char *)buf;
-
-  while (nleft > 0) {
-    nwritten = write(fd, (void *)tbuf, nleft);
-    if (nwritten < 0) {
-      if (errno == EINTR) {
-        continue;
-      }
-      return -1;
-    }
-    nleft -= nwritten;
-    tbuf += nwritten;
-  }
-
-  return n;
-}
-
 bool taosSkipSocketCheck() {
   return true;
 }

src/os/src/detail/CMakeLists.txt

+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+PROJECT(TDengine)
+
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
+INCLUDE_DIRECTORIES(.)
+AUX_SOURCE_DIRECTORY(. SRC)
+SET_SOURCE_FILES_PROPERTIES(osSysinfo.c PROPERTIES COMPILE_FLAGS -w)
+SET_SOURCE_FILES_PROPERTIES(osCoredump.c PROPERTIES COMPILE_FLAGS -w)
+
+ADD_LIBRARY(osdetail ${SRC})
+TARGET_LINK_LIBRARIES(osdetail os)

src/os/src/detail/osCoredump.c

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _DEFAULT_SOURCE
+#include "os.h"
+#include "tconfig.h"
+#include "tglobal.h"
+#include "tulog.h"
+#include "tutil.h"
+#include "tsystem.h"
+
+#ifndef TAOS_OS_FUNC_CORE
+
+int _sysctl(struct __sysctl_args *args );
+
+void taosSetCoreDump() {
+  if (0 == tsEnableCoreFile) {
+    return;
+  }
+  
+  // 1. set ulimit -c unlimited
+  struct rlimit rlim;
+  struct rlimit rlim_new;
+  if (getrlimit(RLIMIT_CORE, &rlim) == 0) {
+    uInfo("the old unlimited para: rlim_cur=%" PRIu64 ", rlim_max=%" PRIu64, rlim.rlim_cur, rlim.rlim_max);
+    rlim_new.rlim_cur = RLIM_INFINITY;
+    rlim_new.rlim_max = RLIM_INFINITY;
+    if (setrlimit(RLIMIT_CORE, &rlim_new) != 0) {
+      uInfo("set unlimited fail, error: %s", strerror(errno));
+      rlim_new.rlim_cur = rlim.rlim_max;
+      rlim_new.rlim_max = rlim.rlim_max;
+      (void)setrlimit(RLIMIT_CORE, &rlim_new);
+    }
+  }
+
+  if (getrlimit(RLIMIT_CORE, &rlim) == 0) {
+    uInfo("the new unlimited para: rlim_cur=%" PRIu64 ", rlim_max=%" PRIu64, rlim.rlim_cur, rlim.rlim_max);
+  }
+
+#ifndef _TD_ARM_
+  // 2. set the path for saving core file
+  struct __sysctl_args args;
+  int     old_usespid = 0;
+  size_t  old_len     = 0;
+  int     new_usespid = 1;
+  size_t  new_len     = sizeof(new_usespid);
+  
+  int name[] = {CTL_KERN, KERN_CORE_USES_PID};
+  
+  memset(&args, 0, sizeof(struct __sysctl_args));
+  args.name    = name;
+  args.nlen    = sizeof(name)/sizeof(name[0]);
+  args.oldval  = &old_usespid;
+  args.oldlenp = &old_len;
+  args.newval  = &new_usespid;
+  args.newlen  = new_len;
+  
+  old_len = sizeof(old_usespid);
+  
+  if (syscall(SYS__sysctl, &args) == -1) {
+      uInfo("_sysctl(kern_core_uses_pid) set fail: %s", strerror(errno));
+  }
+  
+  uInfo("The old core_uses_pid[%" PRIu64 "]: %d", old_len, old_usespid);
+
+
+  old_usespid = 0;
+  old_len     = 0;
+  memset(&args, 0, sizeof(struct __sysctl_args));
+  args.name    = name;
+  args.nlen    = sizeof(name)/sizeof(name[0]);
+  args.oldval  = &old_usespid;
+  args.oldlenp = &old_len;
+  
+  old_len = sizeof(old_usespid);
+  
+  if (syscall(SYS__sysctl, &args) == -1) {
+      uInfo("_sysctl(kern_core_uses_pid) get fail: %s", strerror(errno));
+  }
+  
+  uInfo("The new core_uses_pid[%" PRIu64 "]: %d", old_len, old_usespid);
+#endif
+
+}
+
+#endif
\ No newline at end of file

src/util/src/tfile.c → src/os/src/detail/osFail.c

@@ -13,31 +13,62 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <stdio.h>
-#include <stdlib.h>
-#include <error.h>
-#include <errno.h>
-#include <stdarg.h>
-#include <unistd.h>
+#define _DEFAULT_SOURCE
+#include "os.h"
 
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
+#define RANDOM_NETWORK_FAIL_FACTOR  20
 
-#include "os.h"
+#ifdef TAOS_RANDOM_NETWORK_FAIL
+
+ssize_t taosSendRandomFail(int sockfd, const void *buf, size_t len, int flags) {
+  if (rand() % RANDOM_NETWORK_FAIL_FACTOR == 0) {
+    errno = ECONNRESET;
+    return -1;
+  }
+
+  return send(sockfd, buf, len, flags);
+}
+
+ssize_t taosSendToRandomFail(int sockfd, const void *buf, size_t len, int flags, const struct sockaddr *dest_addr,
+                           socklen_t addrlen) {
+  if (rand() % RANDOM_NETWORK_FAIL_FACTOR == 0) {
+    errno = ECONNRESET;
+    return -1;
+  }
+
+  return sendto(sockfd, buf, len, flags, dest_addr, addrlen);
+}
+
+ssize_t taosReadSocketRandomFail(int fd, void *buf, size_t count) {
+  if (rand() % RANDOM_NETWORK_FAIL_FACTOR == 0) {
+    errno = ECONNRESET;
+    return -1;
+  }
+
+  return read(fd, buf, count);
+}
+
+ssize_t taosWriteSocketRandomFail(int fd, const void *buf, size_t count) {
+  if (rand() % RANDOM_NETWORK_FAIL_FACTOR == 0) {
+    errno = EINTR;
+    return -1;
+  }
+
+  return write(fd, buf, count);
+}
+
+#endif //TAOS_RANDOM_NETWORK_FAIL
 
 #ifdef TAOS_RANDOM_FILE_FAIL
 
 static int random_file_fail_factor = 20;
 static FILE *fpRandomFileFailOutput = NULL;
 
-void taosSetRandomFileFailFactor(int factor)
-{
+void taosSetRandomFileFailFactor(int factor) { 
   random_file_fail_factor = factor;
 }
 
-static void close_random_file_fail_output()
-{
+static void close_random_file_fail_output() {
   if (fpRandomFileFailOutput != NULL) {
     if (fpRandomFileFailOutput != stdout) {
       fclose(fpRandomFileFailOutput);
@@ -46,8 +77,7 @@ static void close_random_file_fail_output()
   }
 }
 
-static void random_file_fail_output_sig(int sig)
-{
+static void random_file_fail_output_sig(int sig) {
   fprintf(fpRandomFileFailOutput, "signal %d received.\n", sig);
 
   struct sigaction act = {0};
@@ -58,8 +88,7 @@ static void random_file_fail_output_sig(int sig)
   exit(EXIT_FAILURE);
 }
 
-void taosSetRandomFileFailOutput(const char *path)
-{
+void taosSetRandomFileFailOutput(const char *path) {
   if (path == NULL) {
     fpRandomFileFailOutput = stdout;
   } else if ((fpRandomFileFailOutput = fopen(path, "w")) != NULL) {
@@ -75,43 +104,38 @@ void taosSetRandomFileFailOutput(const char *path)
   sigaction(SIGSEGV, &act, NULL);
   sigaction(SIGILL, &act, NULL);
 }
-#endif
 
-ssize_t taos_tread(int fd, void *buf, size_t count, const char *file, uint32_t line)
-{
-#ifdef TAOS_RANDOM_FILE_FAIL
+ssize_t taosReadFileRandomFail(int fd, void *buf, size_t count, const char *file, uint32_t line) {
   if (random_file_fail_factor > 0) {
     if (rand() % random_file_fail_factor == 0) {
       errno = EIO;
       return -1;
     }
   }
-#endif
-  return tread(fd, buf, count);
+
+  return taosTReadImp(fd, buf, count);
 }
 
-ssize_t taos_twrite(int fd, void *buf, size_t count, const char *file, uint32_t line)
-{
-#ifdef TAOS_RANDOM_FILE_FAIL
+ssize_t taosWriteFileRandomFail(int fd, void *buf, size_t count, const char *file, uint32_t line) {
   if (random_file_fail_factor > 0) {
     if (rand() % random_file_fail_factor == 0) {
       errno = EIO;
       return -1;
     }
   }
-#endif
-  return twrite(fd, buf, count);
+
+  return taosTWriteImp(fd, buf, count);
 }
 
-off_t taos_lseek(int fd, off_t offset, int whence, const char *file, uint32_t line)
-{
-#ifdef TAOS_RANDOM_FILE_FAIL
+off_t taosLSeekRandomFail(int fd, off_t offset, int whence, const char *file, uint32_t line) {
   if (random_file_fail_factor > 0) {
     if (rand() % random_file_fail_factor == 0) {
       errno = EIO;
       return -1;
     }
   }
-#endif
+
   return lseek(fd, offset, whence);
 }
+
+#endif //TAOS_RANDOM_FILE_FAIL

src/mnode/src/mnodeBalance.c → src/os/src/detail/osFile.c

@@ -15,56 +15,74 @@
 
 #define _DEFAULT_SOURCE
 #include "os.h"
-#include "tglobal.h"
-#include "mnodeDef.h"
-#include "mnodeInt.h"
-#include "mnodeDnode.h"
-#include "mnodeSdb.h"
 
-#ifndef _SYNC
+ssize_t taosTReadImp(int fd, void *buf, size_t count) {
+  size_t  leftbytes = count;
+  ssize_t readbytes;
+  char *  tbuf = (char *)buf;
 
-int32_t balanceInit() { return TSDB_CODE_SUCCESS; }
-void    balanceCleanUp() {}
-void    balanceAsyncNotify() {}
-void    balanceSyncNotify() {}
-void    balanceReset() {}
-int32_t balanceAlterDnode(struct SDnodeObj *pDnode, int32_t vnodeId, int32_t dnodeId) { return TSDB_CODE_SYN_NOT_ENABLED; }
+  while (leftbytes > 0) {
+    readbytes = read(fd, (void *)tbuf, leftbytes);
+    if (readbytes < 0) {
+      if (errno == EINTR) {
+        continue;
+      } else {
+        return -1;
+      }
+    } else if (readbytes == 0) {
+      return (ssize_t)(count - leftbytes);
+    }
 
-int32_t balanceAllocVnodes(SVgObj *pVgroup) {
-  void *     pIter = NULL;
-  SDnodeObj *pDnode = NULL;
-  SDnodeObj *pSelDnode = NULL;
-  float      vnodeUsage = 1000.0;
+    leftbytes -= readbytes;
+    tbuf += readbytes;
+  }
 
-  while (1) {
-    pIter = mnodeGetNextDnode(pIter, &pDnode);
-    if (pDnode == NULL) break;
+  return (ssize_t)count;
+}
 
-    if (pDnode->numOfCores > 0 && pDnode->openVnodes < TSDB_MAX_VNODES) {
-      float openVnodes = pDnode->openVnodes;
-      if (pDnode->isMgmt) openVnodes += tsMnodeEqualVnodeNum;
+ssize_t taosTSendFileImp(int dfd, int sfd, off_t *offset, size_t size) {
+  size_t  leftbytes = size;
+  ssize_t sentbytes;
 
-      float usage = openVnodes / pDnode->numOfCores;
-      if (usage <= vnodeUsage) {
-        pSelDnode = pDnode;
-        vnodeUsage = usage;
+  while (leftbytes > 0) {
+    /*
+     * TODO : Think to check if file is larger than 1GB
+     */
+    //if (leftbytes > 1000000000) leftbytes = 1000000000;
+    sentbytes = sendfile(dfd, sfd, offset, leftbytes);
+    if (sentbytes == -1) {
+      if (errno == EINTR) {
+        continue;
+      }
+      else {
+        return -1;
       }
+    } else if (sentbytes == 0) {
+      return (ssize_t)(size - leftbytes);
     }
-    mnodeDecDnodeRef(pDnode);
+
+    leftbytes -= sentbytes;
   }
 
-  sdbFreeIter(pIter);
+  return size;
+}
 
-  if (pSelDnode == NULL) {
-    mError("failed to alloc vnode to vgroup");
-    return TSDB_CODE_MND_NO_ENOUGH_DNODES;
-  }
+ssize_t taosTWriteImp(int fd, void *buf, size_t n) {
+  size_t nleft = n; 
+  ssize_t nwritten = 0;
+  char *tbuf = (char *)buf;
 
-  pVgroup->vnodeGid[0].dnodeId = pSelDnode->dnodeId;
-  pVgroup->vnodeGid[0].pDnode = pSelDnode;
+  while (nleft > 0) {
+    nwritten = write(fd, (void *)tbuf, nleft);
+    if (nwritten < 0) {
+      if (errno == EINTR) {
+        continue;
+      }
+      return -1;
+    }
+    nleft -= nwritten;
+    tbuf += nwritten;
+  }
 
-  mDebug("dnode:%d, alloc one vnode to vgroup, openVnodes:%d", pSelDnode->dnodeId, pSelDnode->openVnodes);
-  return TSDB_CODE_SUCCESS;
+  return n;
 }
-
-#endif 

src/os/src/detail/osPThread.c

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _DEFAULT_SOURCE
+#include "os.h"
+
+#ifndef TAOS_OS_FUNC_PTHREAD
+
+bool    taosCheckPthreadValid(pthread_t thread) { return thread != 0; }
+int64_t taosGetPthreadId() { return (int64_t)pthread_self(); }
+
+#endif
\ No newline at end of file

src/os/src/detail/osSocket.c

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _DEFAULT_SOURCE
+#include "os.h"
+#include "tulog.h"
+
+#ifndef TAOS_OS_FUNC_SOCKET
+
+int taosSetNonblocking(int sock, int on) {
+  int flags = 0;
+  if ((flags = fcntl(sock, F_GETFL, 0)) < 0) {
+    uError("fcntl(F_GETFL) error: %d (%s)\n", errno, strerror(errno));
+    return 1;
+  }
+
+  if (on)
+    flags |= O_NONBLOCK;
+  else
+    flags &= ~O_NONBLOCK;
+
+  if ((flags = fcntl(sock, F_SETFL, flags)) < 0) {
+    uError("fcntl(F_SETFL) error: %d (%s)\n", errno, strerror(errno));
+    return 1;
+  }
+
+  return 0;
+}
+
+int taosSetSockOpt(int socketfd, int level, int optname, void *optval, int optlen) {
+  return setsockopt(socketfd, level, optname, optval, (socklen_t)optlen);
+}
+
+void taosBlockSIGPIPE() {
+  sigset_t signal_mask;
+  sigemptyset(&signal_mask);
+  sigaddset(&signal_mask, SIGPIPE);
+  int rc = pthread_sigmask(SIG_BLOCK, &signal_mask, NULL);
+  if (rc != 0) {
+    uError("failed to block SIGPIPE");
+  }
+}
+
+#endif
\ No newline at end of file

src/os/linux/src/linuxSysPara.c → src/os/src/detail/osSysinfo.c

@@ -15,13 +15,14 @@
 
 #define _DEFAULT_SOURCE
 #include "os.h"
-#include "tsysctl.h"
 #include "tconfig.h"
 #include "tglobal.h"
 #include "tulog.h"
 #include "tutil.h"
 #include "tsystem.h"
 
+#ifndef TAOS_OS_FUNC_SYSINFO
+
 #define PROCESS_ITEM 12
 
 typedef struct {
@@ -200,7 +201,7 @@ static void taosGetSystemTimezone() {
    * Asia/Shanghai   (CST, +0800)
    * Europe/London   (BST, +0100)
    */
-  sprintf(tsTimezone, "%s (%s, %s%02d00)", buf, tzname[daylight], tz >= 0 ? "+" : "-", abs(tz));
+  snprintf(tsTimezone, TSDB_TIMEZONE_LEN, "%s (%s, %s%02d00)", buf, tzname[daylight], tz >= 0 ? "+" : "-", abs(tz));
 
   // cfg_timezone->cfgStatus = TAOS_CFG_CSTATUS_DEFAULT;
   uInfo("timezone not configured, set to system default:%s", tsTimezone);
@@ -234,7 +235,7 @@ static void taosGetSystemLocale() {  // get and set default locale
       uError("can't get locale from system, set it to en_US.UTF-8");
       strcpy(tsLocale, "en_US.UTF-8");
     } else {
-      tstrncpy(tsLocale, locale, sizeof(tsLocale));
+      tstrncpy(tsLocale, locale, TSDB_LOCALE_LEN);
       uError("locale not configured, set to system default:%s", tsLocale);
     }
   }
@@ -247,7 +248,7 @@ static void taosGetSystemLocale() {  // get and set default locale
       str++;
 
       char *revisedCharset = taosCharsetReplace(str);
-      tstrncpy(tsCharset, revisedCharset, sizeof(tsCharset));
+      tstrncpy(tsCharset, revisedCharset, TSDB_LOCALE_LEN);
 
       free(revisedCharset);
       uWarn("charset not configured, set to system default:%s", tsCharset);
@@ -542,126 +543,31 @@ void taosKillSystem() {
   kill(tsProcId, 2);
 }
 
-int _sysctl(struct __sysctl_args *args );
-void taosSetCoreDump() {
-  if (0 == tsEnableCoreFile) {
-    return;
-  }
-  
-  // 1. set ulimit -c unlimited
-  struct rlimit rlim;
-  struct rlimit rlim_new;
-  if (getrlimit(RLIMIT_CORE, &rlim) == 0) {
-    uInfo("the old unlimited para: rlim_cur=%" PRIu64 ", rlim_max=%" PRIu64, rlim.rlim_cur, rlim.rlim_max);
-    rlim_new.rlim_cur = RLIM_INFINITY;
-    rlim_new.rlim_max = RLIM_INFINITY;
-    if (setrlimit(RLIMIT_CORE, &rlim_new) != 0) {
-      uInfo("set unlimited fail, error: %s", strerror(errno));
-      rlim_new.rlim_cur = rlim.rlim_max;
-      rlim_new.rlim_max = rlim.rlim_max;
-      (void)setrlimit(RLIMIT_CORE, &rlim_new);
-    }
-  }
-
-  if (getrlimit(RLIMIT_CORE, &rlim) == 0) {
-    uInfo("the new unlimited para: rlim_cur=%" PRIu64 ", rlim_max=%" PRIu64, rlim.rlim_cur, rlim.rlim_max);
+int tSystem(const char *cmd) {
+  FILE *fp;
+  int   res;
+  char  buf[1024];
+  if (cmd == NULL) {
+    uError("tSystem cmd is NULL!\n");
+    return -1;
   }
 
-#ifndef _TD_ARM_
-  // 2. set the path for saving core file
-  struct __sysctl_args args;
-  int     old_usespid = 0;
-  size_t  old_len     = 0;
-  int     new_usespid = 1;
-  size_t  new_len     = sizeof(new_usespid);
-  
-  int name[] = {CTL_KERN, KERN_CORE_USES_PID};
-  
-  memset(&args, 0, sizeof(struct __sysctl_args));
-  args.name    = name;
-  args.nlen    = sizeof(name)/sizeof(name[0]);
-  args.oldval  = &old_usespid;
-  args.oldlenp = &old_len;
-  args.newval  = &new_usespid;
-  args.newlen  = new_len;
-  
-  old_len = sizeof(old_usespid);
-  
-  if (syscall(SYS__sysctl, &args) == -1) {
-      uInfo("_sysctl(kern_core_uses_pid) set fail: %s", strerror(errno));
-  }
-  
-  uInfo("The old core_uses_pid[%" PRIu64 "]: %d", old_len, old_usespid);
-
+  if ((fp = popen(cmd, "r")) == NULL) {
+    uError("popen cmd:%s error: %s/n", cmd, strerror(errno));
+    return -1;
+  } else {
+    while (fgets(buf, sizeof(buf), fp)) {
+      uDebug("popen result:%s", buf);
+    }
 
-  old_usespid = 0;
-  old_len     = 0;
-  memset(&args, 0, sizeof(struct __sysctl_args));
-  args.name    = name;
-  args.nlen    = sizeof(name)/sizeof(name[0]);
-  args.oldval  = &old_usespid;
-  args.oldlenp = &old_len;
-  
-  old_len = sizeof(old_usespid);
-  
-  if (syscall(SYS__sysctl, &args) == -1) {
-      uInfo("_sysctl(kern_core_uses_pid) get fail: %s", strerror(errno));
-  }
-  
-  uInfo("The new core_uses_pid[%" PRIu64 "]: %d", old_len, old_usespid);
-#endif
-  
-#if 0
-  // 3. create the path for saving core file
-  int status; 
-  char coredump_dir[32] = "/var/log/taosdump";
-  if (opendir(coredump_dir) == NULL) {
-    status = mkdir(coredump_dir, S_IRWXU | S_IRWXG | S_IRWXO); 
-    if (status) {
-      uInfo("mkdir fail, error: %s\n", strerror(errno));
+    if ((res = pclose(fp)) == -1) {
+      uError("close popen file pointer fp error!\n");
+    } else {
+      uDebug("popen res is :%d\n", res);
     }
-  }
 
-  // 4. set kernel.core_pattern
-   struct __sysctl_args args;
-   char    old_corefile[128];
-   size_t  old_len;
-   char    new_corefile[128] = "/var/log/taosdump/core-%e-%p";
-   size_t  new_len = sizeof(new_corefile);
-   
-   int name[] = {CTL_KERN, KERN_CORE_PATTERN};
-
-   memset(&args, 0, sizeof(struct __sysctl_args));
-   args.name    = name;
-   args.nlen    = sizeof(name)/sizeof(name[0]);
-   args.oldval  = old_corefile;
-   args.oldlenp = &old_len;
-   args.newval  = new_corefile;
-   args.newlen  = new_len;
-
-   old_len = sizeof(old_corefile);
-
-   if (syscall(SYS__sysctl, &args) == -1) {
-       uInfo("_sysctl(kern_core_pattern) set fail: %s", strerror(errno));
-   }
-   
-   uInfo("The old kern_core_pattern: %*s\n", old_len, old_corefile);
-
-
-   memset(&args, 0, sizeof(struct __sysctl_args));
-   args.name    = name;
-   args.nlen    = sizeof(name)/sizeof(name[0]);
-   args.oldval  = old_corefile;
-   args.oldlenp = &old_len;
-   
-   old_len = sizeof(old_corefile);
-
-   if (syscall(SYS__sysctl, &args) == -1) {
-       uInfo("_sysctl(kern_core_pattern) get fail: %s", strerror(errno));
-   }
-   
-   uInfo("The new kern_core_pattern: %*s\n", old_len, old_corefile);
-#endif
-  
+    return res;
+  }
 }
 
+#endif
\ No newline at end of file

src/os/linux/src/linuxPlatform.c → src/os/src/detail/osTimer.c

@@ -13,18 +13,15 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#define _DEFAULT_SOURCE
 #include "os.h"
 #include "taosdef.h"
 #include "tglobal.h"
 #include "ttimer.h"
 #include "tulog.h"
 #include "tutil.h"
+#include <signal.h>
 
-int64_t str2int64(char *str) {
-  char *endptr = NULL;
-  return strtoll(str, &endptr, 10);
-}
+#ifndef TAOS_OS_FUNC_TIMER
 
 /*
   to make taosMsleep work,
@@ -54,33 +51,7 @@ void taosMsleep(int mseconds) {
   /* pthread_sigmask(SIG_UNBLOCK, &set, NULL); */
 }
 
-bool taosCheckPthreadValid(pthread_t thread) { return thread != 0; }
-
-int64_t taosGetPthreadId() { return (int64_t)pthread_self(); }
-
-int taosSetNonblocking(int sock, int on) {
-  int flags = 0;
-  if ((flags = fcntl(sock, F_GETFL, 0)) < 0) {
-    uError("fcntl(F_GETFL) error: %d (%s)\n", errno, strerror(errno));
-    return 1;
-  }
-
-  if (on)
-    flags |= O_NONBLOCK;
-  else
-    flags &= ~O_NONBLOCK;
 
-  if ((flags = fcntl(sock, F_SETFL, flags)) < 0) {
-    uError("fcntl(F_SETFL) error: %d (%s)\n", errno, strerror(errno));
-    return 1;
-  }
-
-  return 0;
-}
-
-int taosSetSockOpt(int socketfd, int level, int optname, void *optval, int optlen) {
-  return setsockopt(socketfd, level, optname, optval, (socklen_t)optlen);
-}
 static void taosDeleteTimer(void *tharg) {
   timer_t *pTimer = tharg;
   timer_delete(*pTimer);
@@ -89,8 +60,7 @@ static void taosDeleteTimer(void *tharg) {
 static pthread_t timerThread;
 static timer_t         timerId;
 static volatile bool stopTimer = false;
-
-void *taosProcessAlarmSignal(void *tharg) {
+static void *taosProcessAlarmSignal(void *tharg) {
   // Block the signal
   sigset_t sigset;
   sigemptyset(&sigset);
@@ -143,7 +113,6 @@ void *taosProcessAlarmSignal(void *tharg) {
   return NULL;
 }
 
-
 int taosInitTimer(void (*callback)(int), int ms) {
   pthread_attr_t tattr;
   pthread_attr_init(&tattr);
@@ -161,158 +130,4 @@ void taosUninitTimer() {
   pthread_join(timerThread, NULL);
 }
 
-ssize_t tread(int fd, void *buf, size_t count) {
-  size_t  leftbytes = count;
-  ssize_t readbytes;
-  char *  tbuf = (char *)buf;
-
-  while (leftbytes > 0) {
-    readbytes = read(fd, (void *)tbuf, leftbytes);
-    if (readbytes < 0) {
-      if (errno == EINTR) {
-        continue;
-      } else {
-        return -1;
-      }
-    } else if (readbytes == 0) {
-      return (ssize_t)(count - leftbytes);
-    }
-
-    leftbytes -= readbytes;
-    tbuf += readbytes;
-  }
-
-  return (ssize_t)count;
-}
-
-ssize_t tsendfile(int dfd, int sfd, off_t *offset, size_t size) {
-  size_t  leftbytes = size;
-  ssize_t sentbytes;
-
-  while (leftbytes > 0) {
-    /*
-     * TODO : Think to check if file is larger than 1GB
-     */
-    //if (leftbytes > 1000000000) leftbytes = 1000000000;
-    sentbytes = sendfile(dfd, sfd, offset, leftbytes);
-    if (sentbytes == -1) {
-      if (errno == EINTR) {
-        continue;
-      }
-      else {
-        return -1;
-      }
-    } else if (sentbytes == 0) {
-      return (ssize_t)(size - leftbytes);
-    }
-
-    leftbytes -= sentbytes;
-  }
-
-  return size;
-}
-
-ssize_t twrite(int fd, void *buf, size_t n) {
-  size_t nleft = n; 
-  ssize_t nwritten = 0;
-  char *tbuf = (char *)buf;
-
-  while (nleft > 0) {
-    nwritten = write(fd, (void *)tbuf, nleft);
-    if (nwritten < 0) {
-      if (errno == EINTR) {
-        continue;
-      }
-      return -1;
-    }
-    nleft -= nwritten;
-    tbuf += nwritten;
-  }
-
-  return n;
-}
-
-void taosBlockSIGPIPE() {
-  sigset_t signal_mask;
-  sigemptyset(&signal_mask);
-  sigaddset(&signal_mask, SIGPIPE);
-  int rc = pthread_sigmask(SIG_BLOCK, &signal_mask, NULL);
-  if (rc != 0) {
-    uError("failed to block SIGPIPE");
-  }
-}
-
-int tSystem(const char * cmd) 
-{ 
-  FILE * fp; 
-  int res; 
-  char buf[1024]; 
-  if (cmd == NULL) { 
-    uError("tSystem cmd is NULL!\n");
-    return -1;
-  } 
-  
-  if ((fp = popen(cmd, "r") ) == NULL) { 
-    uError("popen cmd:%s error: %s/n", cmd, strerror(errno)); 
-    return -1; 
-  } else {
-    while(fgets(buf, sizeof(buf), fp))  { 
-      uDebug("popen result:%s", buf); 
-    } 
-
-    if ((res = pclose(fp)) == -1) { 
-      uError("close popen file pointer fp error!\n");
-    } else { 
-      uDebug("popen res is :%d\n", res);
-    } 
-
-    return res;
-  }
-}
-
-#ifdef TAOS_RANDOM_NETWORK_FAIL
-
-#define RANDOM_NETWORK_FAIL_FACTOR  20
-
-ssize_t taos_send_random_fail(int sockfd, const void *buf, size_t len, int flags)
-{
-  if (rand() % RANDOM_NETWORK_FAIL_FACTOR == 0) {
-    errno = ECONNRESET;
-    return -1;
-  }
-
-  return send(sockfd, buf, len, flags);
-}
-
-ssize_t taos_sendto_random_fail(int sockfd, const void *buf, size_t len, int flags,
-                      const struct sockaddr *dest_addr, socklen_t addrlen)
-{
-  if (rand() % RANDOM_NETWORK_FAIL_FACTOR == 0) {
-    errno = ECONNRESET;
-    return -1;
-  }
-
-  return sendto(sockfd, buf, len, flags, dest_addr, addrlen);
-}
-
-ssize_t taos_read_random_fail(int fd, void *buf, size_t count)
-{
-  if (rand() % RANDOM_NETWORK_FAIL_FACTOR == 0) {
-    errno = ECONNRESET;
-    return -1;
-  }
-
-  return read(fd, buf, count);
-}
-
-ssize_t taos_write_random_fail(int fd, const void *buf, size_t count)
-{
-  if (rand() % RANDOM_NETWORK_FAIL_FACTOR == 0) {
-    errno = EINTR;
-    return -1;
-  }
-
-  return write(fd, buf, count);
-}
-
-#endif /* TAOS_RANDOM_NETWORK_FAIL */
+#endif
\ No newline at end of file

src/os/src/detail/osUtil.c

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _DEFAULT_SOURCE
+#include "os.h"
+
+#ifndef TAOS_OS_FUNC_UTIL
+
+int64_t tsosStr2int64(char *str) {
+  char *endptr = NULL;
+  return strtoll(str, &endptr, 10);
+}
+
+#endif
\ No newline at end of file

src/os/src/linux64/CMakeLists.txt

+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+PROJECT(TDengine)
+
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
+AUX_SOURCE_DIRECTORY(. SRC)
+
+ADD_LIBRARY(os ${SRC})
+TARGET_LINK_LIBRARIES(os m rt)
+

src/os/src/linux64/linuxEnv.c

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#define _DEFAULT_SOURCE
+#include "os.h"
+#include "tglobal.h"
+#include "tulog.h"
+
+void osInit() {
+  strcpy(configDir, "/etc/taos");
+  strcpy(tsVnodeDir, "");
+  strcpy(tsDnodeDir, "");
+  strcpy(tsMnodeDir, "");
+  strcpy(tsDataDir, "/var/lib/taos");
+  strcpy(tsLogDir, "/var/log/taos");
+  strcpy(tsScriptDir, "/etc/taos");
+  strcpy(tsOsName, "Linux");
+}
\ No newline at end of file

src/os/windows/src/twindows.c → src/os/src/windows64/twindows.c

@@ -398,7 +398,7 @@ char *strndup(const char *s, size_t n) {
 void taosSetCoreDump() {}
 
 #ifdef _TD_GO_DLL_
-int64_t str2int64(char *str) {
+int64_t tsosStr2int64(char *str) {
   char *endptr = NULL;
   return strtoll(str, &endptr, 10);
 }

src/plugins/http/CMakeLists.txt

@@ -3,6 +3,7 @@ PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
@@ -10,7 +11,6 @@ IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/zlib-1.2.11/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/cJson/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/lz4/inc)
-  INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
   INCLUDE_DIRECTORIES(inc)
   AUX_SOURCE_DIRECTORY(src SRC)
   ADD_LIBRARY(http ${SRC})

src/plugins/http/src/httpJson.c

@@ -45,7 +45,7 @@ int httpWriteBufByFd(struct HttpContext* pContext, const char* buf, int sz) {
 
   do {
     if (pContext->fd > 2){
-      len = (int)send(pContext->fd, buf + writeLen, (size_t)(sz - writeLen), MSG_NOSIGNAL);
+      len = (int)taosSend(pContext->fd, buf + writeLen, (size_t)(sz - writeLen), MSG_NOSIGNAL);
     }
     else {
       return sz;

src/plugins/monitor/CMakeLists.txt

@@ -3,11 +3,11 @@ PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
-  INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
   INCLUDE_DIRECTORIES(inc)
   AUX_SOURCE_DIRECTORY(./src SRC)
   ADD_LIBRARY(monitor ${SRC})

src/plugins/mqtt/CMakeLists.txt

@@ -3,6 +3,7 @@ PROJECT(TDengine)
 
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/query/inc)
@@ -10,7 +11,6 @@ IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/cJson/inc)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/MQTT-C/include)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/MQTT-C/examples/templates)
-  INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
   INCLUDE_DIRECTORIES(inc)
   AUX_SOURCE_DIRECTORY(src SRC)
   ADD_LIBRARY(mqtt ${SRC})

src/query/CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
-INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/tsdb/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/client/inc)

src/query/src/qTsbuf.c

@@ -740,7 +740,7 @@ int32_t tsBufMerge(STSBuf* pDestBuf, const STSBuf* pSrcBuf, int32_t vnodeId) {
   int32_t size = pSrcBuf->fileSize - offset;
 
 #ifdef LINUX
-  ssize_t rc = tsendfile(fileno(pDestBuf->f), fileno(pSrcBuf->f), &offset, size);
+  ssize_t rc = taosTSendFile(fileno(pDestBuf->f), fileno(pSrcBuf->f), &offset, size);
 #else
   ssize_t rc = fsendfile(pDestBuf->f, pSrcBuf->f, &offset, size);
 #endif

src/rpc/CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
 INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/cJson/inc)
@@ -12,10 +12,11 @@ INCLUDE_DIRECTORIES(inc)
 IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   AUX_SOURCE_DIRECTORY(./src SRC)
 ELSEIF (TD_DARWIN_64)
-  LIST(APPEND SRC ./src/thaship.c)
-  LIST(APPEND SRC ./src/trpc.c)
-  LIST(APPEND SRC ./src/tstring.c)
-  LIST(APPEND SRC ./src/tudp.c)
+  #LIST(APPEND SRC ./src/thaship.c)
+  #LIST(APPEND SRC ./src/trpc.c)
+  #LIST(APPEND SRC ./src/tstring.c)
+  #LIST(APPEND SRC ./src/tudp.c)
+  AUX_SOURCE_DIRECTORY(src SRC)
 ELSEIF (TD_WINDOWS_64)
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/pthread)
   LIST(APPEND SRC ./src/thaship.c)

src/rpc/src/rpcMain.c

@@ -626,6 +626,7 @@ static void rpcReleaseConn(SRpcConn *pConn) {
   pConn->pReqMsg = NULL;
   pConn->reqMsgLen = 0;
   pConn->pContext = NULL;
+  pConn->chandle = NULL;
 
   taosFreeId(pRpc->idPool, pConn->sid);
   tDebug("%s, rpc connection is released", pConn->info);
@@ -656,7 +657,7 @@ static SRpcConn *rpcAllocateClientConn(SRpcInfo *pRpc) {
     pConn->sid = sid;
     pConn->tranId = (uint16_t)(random() & 0xFFFF);
     pConn->ownId = htonl(pConn->sid);
-    pConn->linkUid = (uint32_t)((int64_t)pConn + (int64_t)getpid());
+    pConn->linkUid = (uint32_t)((int64_t)pConn + (int64_t)getpid() + (int64_t)pConn->tranId);
     pConn->spi = pRpc->spi;
     pConn->encrypt = pRpc->encrypt;
     if (pConn->spi) memcpy(pConn->secret, pRpc->secret, TSDB_KEY_LEN);
@@ -913,7 +914,7 @@ static SRpcConn *rpcProcessMsgHead(SRpcInfo *pRpc, SRecvInfo *pRecv) {
   }
 
   sid = pConn->sid;
-  pConn->chandle = pRecv->chandle;
+  if (pConn->chandle == NULL) pConn->chandle = pRecv->chandle;
   pConn->peerIp = pRecv->ip; 
   pConn->peerPort = pRecv->port;
   if (pHead->port) pConn->peerPort = htons(pHead->port); 
@@ -1015,7 +1016,7 @@ static void *rpcProcessMsgFromPeer(SRecvInfo *pRecv) {
     if (code != 0) { // parsing error
       if (rpcIsReq(pHead->msgType)) {
         rpcSendErrorMsgToPeer(pRecv, code);
-        tDebug("%s %p %p, %s is sent with error code:%x", pRpc->label, pConn, (void *)pHead->ahandle, taosMsg[pHead->msgType+1], code);
+        tDebug("%s %p %p, %s is sent with error code:0x%x", pRpc->label, pConn, (void *)pHead->ahandle, taosMsg[pHead->msgType+1], code);
       } 
     } else { // msg is passed to app only parsing is ok 
       rpcProcessIncomingMsg(pConn, pHead);

src/rpc/src/rpcUdp.c

@@ -242,7 +242,7 @@ int taosSendUdpData(uint32_t ip, uint16_t port, void *data, int dataLen, void *c
   destAdd.sin_addr.s_addr = ip;
   destAdd.sin_port = htons(port);
 
-  int ret = (int)sendto(pConn->fd, data, (size_t)dataLen, 0, (struct sockaddr *)&destAdd, sizeof(destAdd));
+  int ret = (int)taosSendto(pConn->fd, data, (size_t)dataLen, 0, (struct sockaddr *)&destAdd, sizeof(destAdd));
 
   return ret;
 }

src/rpc/test/CMakeLists.txt

 CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
 PROJECT(TDengine)
 
-IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
-  INCLUDE_DIRECTORIES(${TD_OS_DIR}/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
-  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
-  INCLUDE_DIRECTORIES(../inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
+INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/rpc/inc)
 
+IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
   LIST(APPEND CLIENT_SRC ./rclient.c)
   ADD_EXECUTABLE(rclient ${CLIENT_SRC})
   TARGET_LINK_LIBRARIES(rclient trpc)

src/sync/CMakeLists.txt

+CMAKE_MINIMUM_REQUIRED(VERSION 2.8)
+PROJECT(TDengine)
+
+IF ((TD_LINUX_64) OR (TD_LINUX_32 AND TD_ARM))
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/os/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/util/inc)
+  INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/src/common/inc)
+  INCLUDE_DIRECTORIES(${TD_ENTERPRISE_DIR}/src/inc)
+  INCLUDE_DIRECTORIES(inc)
+  AUX_SOURCE_DIRECTORY(src SRC)
+  LIST(REMOVE_ITEM SRC ./src/tarbitrator.c)
+
+  ADD_LIBRARY(sync ${SRC})
+  TARGET_LINK_LIBRARIES(sync tutil pthread common)
+
+  LIST(APPEND BIN_SRC ./src/tarbitrator.c)
+  LIST(APPEND BIN_SRC ./src/taosTcpPool.c)
+  ADD_EXECUTABLE(tarbitrator ${BIN_SRC})
+  TARGET_LINK_LIBRARIES(tarbitrator tutil sync common)
+
+  ADD_SUBDIRECTORY(test)
+ENDIF ()

src/sync/inc/syncInt.h

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TDENGINE_SYNCINT_H
+#define TDENGINE_SYNCINT_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define sFatal(...) { if (sDebugFlag & DEBUG_FATAL) { taosPrintLog("SYN FATAL ", sDebugFlag, __VA_ARGS__); }}
+#define sError(...) { if (sDebugFlag & DEBUG_ERROR) { taosPrintLog("SYN ERROR ", sDebugFlag, __VA_ARGS__); }}
+#define sWarn(...)  { if (sDebugFlag & DEBUG_WARN)  { taosPrintLog("SYN WARN ", sDebugFlag, __VA_ARGS__); }}
+#define sInfo(...)  { if (sDebugFlag & DEBUG_INFO)  { taosPrintLog("SYN ", sDebugFlag, __VA_ARGS__); }}
+#define sDebug(...) { if (sDebugFlag & DEBUG_DEBUG) { taosPrintLog("SYN ", sDebugFlag, __VA_ARGS__); }}
+#define sTrace(...) { if (sDebugFlag & DEBUG_TRACE) { taosPrintLog("SYN ", sDebugFlag, __VA_ARGS__); }}
+
+#define TAOS_SMSG_SYNC_DATA    1
+#define TAOS_SMSG_FORWARD      2
+#define TAOS_SMSG_FORWARD_RSP  3
+#define TAOS_SMSG_SYNC_REQ     4 
+#define TAOS_SMSG_SYNC_RSP     5
+#define TAOS_SMSG_SYNC_MUST    6
+#define TAOS_SMSG_STATUS       7
+
+#define nodeRole    pNode->peerInfo[pNode->selfIndex]->role
+#define nodeVersion pNode->peerInfo[pNode->selfIndex]->version
+#define nodeSStatus pNode->peerInfo[pNode->selfIndex]->sstatus
+
+#pragma pack(push, 1)
+
+typedef struct {
+  char     type;        // msg type
+  char     pversion;    // protocol version
+  char     reserved[6]; // not used
+  int32_t  vgId;        // vg ID
+  int32_t  len;         // content length, does not include head
+  // char     cont[];      // message content starts from here
+} SSyncHead;
+
+typedef struct {
+  SSyncHead syncHead;
+  uint16_t  port;
+  char      fqdn[TSDB_FQDN_LEN];
+  int32_t   sourceId;  // only for arbitrator
+} SFirstPkt;
+
+typedef struct {
+  int8_t    role;
+  uint64_t  version;
+} SPeerStatus;
+
+typedef struct {
+  int8_t      role;
+  int8_t      ack;
+  uint64_t    version;
+  SPeerStatus peersStatus[];
+} SPeersStatus;
+
+typedef struct {
+  char      name[TSDB_FILENAME_LEN];
+  uint32_t  magic;
+  uint32_t  index;
+  uint64_t  fversion;
+  int32_t   size;
+} SFileInfo;
+
+typedef struct {
+  int8_t    sync;
+} SFileAck;
+
+typedef struct {
+  uint64_t  version;
+  int32_t   code;
+} SFwdRsp;
+  
+#pragma pack(pop)
+
+typedef struct {
+  char  *buffer;
+  int    bufferSize;
+  char  *offset;
+  int    forwards;
+  int    code;
+} SRecvBuffer;
+
+typedef struct {
+  uint64_t  version;
+  void     *mhandle;
+  int8_t    acks;
+  int8_t    nacks;
+  int8_t    confirmed;
+  int32_t   code;
+  uint64_t  time;
+} SFwdInfo;
+
+typedef struct {
+  int       first;
+  int       last;
+  int       fwds;  // number of forwards
+  SFwdInfo  fwdInfo[];
+} SSyncFwds;
+
+typedef struct SsyncPeer {
+  int32_t     nodeId;
+  uint32_t    ip;
+  uint16_t    port;
+  char        fqdn[TSDB_FQDN_LEN];  // peer ip string
+  char        id[TSDB_EP_LEN+16];   // peer vgId + end point
+  int8_t      role;
+  int8_t      sstatus;    // sync status
+  uint64_t    version;
+  uint64_t    sversion;   // track the peer version in retrieve process 
+  int         syncFd;
+  int         peerFd;     // forward FD
+  void       *timer;
+  void       *pConn;
+  int         notifyFd;
+  int         watchNum;
+  int        *watchFd;
+  int8_t      refCount;   // reference count
+  struct SSyncNode *pSyncNode;
+} SSyncPeer;
+
+typedef struct SSyncNode {
+  char         path[TSDB_FILENAME_LEN];
+  int8_t       replica;
+  int8_t       quorum;
+  uint32_t     vgId;
+  void        *ahandle;
+  int8_t       selfIndex;
+  SSyncPeer   *peerInfo[TAOS_SYNC_MAX_REPLICA+1];  // extra one for arbitrator
+  SSyncPeer   *pMaster;
+  int8_t       refCount;
+  SRecvBuffer *pRecv;
+  SSyncFwds   *pSyncFwds;  // saved forward info if quorum >1
+  void        *pFwdTimer;
+  FGetFileInfo    getFileInfo;
+  FGetWalInfo     getWalInfo;
+  FWriteToCache   writeToCache;
+  FConfirmForward confirmForward;
+  FNotifyRole     notifyRole;
+  FNotifyFileSynced notifyFileSynced;
+  pthread_mutex_t mutex;
+} SSyncNode;
+
+// sync module global
+extern int  tsSyncNum;
+extern char tsNodeFqdn[TSDB_FQDN_LEN];
+
+void *syncRetrieveData(void *param);
+void *syncRestoreData(void *param);
+int   syncSaveIntoBuffer(SSyncPeer *pPeer, SWalHead *pHead);
+void  syncRestartConnection(SSyncPeer *pPeer);
+void  syncBroadcastStatus(SSyncNode *pNode);
+void  syncAddPeerRef(SSyncPeer *pPeer);
+int   syncDecPeerRef(SSyncPeer *pPeer);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // TDENGINE_VNODEPEER_H

src/os/linux/inc/tsysctl.h → src/sync/inc/syncMain.h

@@ -13,18 +13,21 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef TDENGINE_TSYSCTL_H
-#define TDENGINE_TSYSCTL_H
+#ifndef TDENGINE_PLUGINS_SYNC_H
+#define TDENGINE_PLUGINS_SYNC_H
 
 #ifdef __cplusplus
 extern "C" {
 #endif
 
-#ifndef _ALPINE
-  #include <error.h>
-  #include <sys/sysctl.h>
-#else
-  #include <linux/sysctl.h>  
+#include <stdbool.h>
+#include <stdint.h>
+
+int32_t syncTest1();
+int32_t syncTest2();
+
+#ifdef __cplusplus
+}
 #endif
 
 #endif

src/sync/inc/taosTcpPool.h

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef TDENGINE_TCP_POOL_H
+#define TDENGINE_TCP_POOL_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+typedef void* ttpool_h;
+typedef void* tthread_h;
+
+typedef struct {
+  int       numOfThreads;
+  uint32_t  serverIp;
+  short     port;
+  int       bufferSize;
+  void     (*processBrokenLink)(void *ahandle);
+  int      (*processIncomingMsg)(void *ahandle, void *buffer);
+  void     (*processIncomingConn)(int fd, uint32_t ip);
+} SPoolInfo;
+
+ttpool_h   taosOpenTcpThreadPool(SPoolInfo *pInfo);
+void       taosCloseTcpThreadPool(ttpool_h);
+void      *taosAllocateTcpConn(void *, void *ahandle, int connFd);
+void       taosFreeTcpConn(void *);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif  // TDENGINE_TCP_POOL_H
+                                   

src/sync/src/syncRestore.c

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "os.h"
+#include "tlog.h"
+#include "tutil.h"
+#include "ttimer.h"
+#include "tsocket.h"
+#include "tqueue.h"
+#include "twal.h"
+#include "tsync.h"
+#include "syncInt.h"
+
+static void syncRemoveExtraFile(SSyncPeer *pPeer, uint32_t sindex, uint32_t eindex) {
+  char       name[TSDB_FILENAME_LEN*2] = {0};
+  char       fname[TSDB_FILENAME_LEN*3] = {0};
+  uint32_t   magic; 
+  uint64_t   fversion;
+  int32_t    size;
+  uint32_t   index = sindex;
+  SSyncNode *pNode = pPeer->pSyncNode;
+
+  if (sindex < 0 || eindex < sindex) return;
+
+  while (1) {
+    name[0] = 0;
+    magic = (*pNode->getFileInfo)(pNode->ahandle, name, &index, eindex, &size, &fversion);
+    if (magic == 0) break;
+
+    snprintf(fname, sizeof(fname), "%s/%s", pNode->path, name);
+    remove(fname);
+    sDebug("%s, %s is removed", pPeer->id, fname);
+
+    index++;
+    if (index > eindex) break;
+  }        
+}
+
+static int syncRestoreFile(SSyncPeer *pPeer, uint64_t *fversion) 
+{
+  SSyncNode *pNode = pPeer->pSyncNode;
+  SFileInfo  minfo; memset(&minfo, 0, sizeof(minfo)); /* = {0}; */  // master file info
+  SFileInfo  sinfo; memset(&sinfo, 0, sizeof(sinfo)); /* = {0}; */  // slave file info
+  SFileAck   fileAck; 
+  int        code = -1;
+  char       name[TSDB_FILENAME_LEN * 2] = {0};
+  uint32_t   pindex = 0;    // index in last restore
+
+  *fversion = 0;
+  sinfo.index = 0;
+  while (1) {
+    // read file info
+    int ret = taosReadMsg(pPeer->syncFd, &(minfo), sizeof(minfo));
+    if (ret < 0 ) break;
+
+    // if no more file from master, break;
+    if (minfo.name[0] == 0 || minfo.magic == 0) {
+      sDebug("%s, no more files to restore", pPeer->id);
+
+      // remove extra files after the current index
+      syncRemoveExtraFile(pPeer, sinfo.index+1, TAOS_SYNC_MAX_INDEX);
+      code = 0; 
+      break;
+    }
+   
+    // remove extra files on slave between the current and last index
+    syncRemoveExtraFile(pPeer, pindex+1, minfo.index-1);
+    pindex = minfo.index;
+
+    // check the file info
+    sinfo = minfo;
+    sDebug("%s, get file info:%s", pPeer->id, minfo.name);
+    sinfo.magic = (*pNode->getFileInfo)(pNode->ahandle, sinfo.name, &sinfo.index, TAOS_SYNC_MAX_INDEX, &sinfo.size, &sinfo.fversion);
+
+    // if file not there or magic is not the same, file shall be synced
+    memset(&fileAck, 0, sizeof(fileAck));
+    fileAck.sync = (sinfo.magic != minfo.magic || sinfo.name[0] == 0) ? 1:0;
+
+    // send file ack
+    ret = taosWriteMsg(pPeer->syncFd, &(fileAck), sizeof(fileAck));
+    if (ret <0)  break;
+ 
+    // if sync is not required, continue
+    if (fileAck.sync == 0) {
+      sDebug("%s, %s is the same", pPeer->id, minfo.name);
+      continue;
+    }
+
+    // if sync is required, open file, receive from master, and write to file
+    // get the full path to file
+    snprintf(name, sizeof(name), "%s/%s", pNode->path, minfo.name);
+
+    int dfd = open(name, O_WRONLY | O_CREAT | O_TRUNC, S_IRWXU | S_IRWXG | S_IRWXO);
+    if ( dfd < 0 ) {
+      sError("%s, failed to open file:%s", pPeer->id, name);
+      break;
+    }
+
+    ret = taosCopyFds(pPeer->syncFd, dfd, minfo.size);
+    fsync(dfd);
+    close(dfd);
+    if (ret<0) break;
+
+    sDebug("%s, %s is received, size:%d", pPeer->id, minfo.name, minfo.size);
+
+  }
+
+  if (code == 0 && (minfo.fversion != sinfo.fversion)) {
+   // data file is changed, code shall be set to 1 
+    *fversion = minfo.fversion;
+    code = 1;  
+  }
+
+  if (code < 0) {
+    sError("%s, failed to restore %s(%s)", pPeer->id, name, strerror(errno));
+  }
+
+  return code;
+}
+
+static int syncRestoreWal(SSyncPeer *pPeer)
+{
+  SSyncNode  *pNode = pPeer->pSyncNode;
+  int         ret, code = -1;
+
+  void *buffer = calloc(1024000, 1);  // size for one record
+  if (buffer == NULL) return -1;
+
+  SWalHead *pHead = (SWalHead *)buffer;
+
+  while (1) {
+    ret = taosReadMsg(pPeer->syncFd, pHead, sizeof(SWalHead));
+    if (ret <0)  break;
+
+    if (pHead->len == 0) {code = 0; break;}  // wal sync over
+    
+    ret = taosReadMsg(pPeer->syncFd, pHead->cont, pHead->len);
+    if (ret <0)  break;
+
+    sDebug("%s, restore a record, ver:%" PRIu64, pPeer->id, pHead->version);
+    (*pNode->writeToCache)(pNode->ahandle, pHead, TAOS_QTYPE_WAL);
+  }
+
+  if (code<0) {
+    sError("%s, failed to restore wal(%s)", pPeer->id, strerror(errno));
+  }
+
+  free(buffer);
+  return code;
+}
+
+static char *syncProcessOneBufferedFwd(SSyncPeer *pPeer, char *offset)
+{
+  SSyncNode *pNode = pPeer->pSyncNode;
+  SWalHead  *pHead = (SWalHead *) offset;
+
+  (*pNode->writeToCache)(pNode->ahandle, pHead, TAOS_QTYPE_FWD);
+  offset += pHead->len + sizeof(SWalHead);
+
+  return offset;
+}
+
+static int syncProcessBufferedFwd(SSyncPeer *pPeer)
+{
+  SSyncNode   *pNode = pPeer->pSyncNode;
+  SRecvBuffer *pRecv = pNode->pRecv;
+  int          forwards = 0;
+
+  sDebug("%s, number of buffered forwards:%d", pPeer->id, pRecv->forwards);
+
+  char *offset = pRecv->buffer;
+  while (forwards < pRecv->forwards) {
+    offset = syncProcessOneBufferedFwd(pPeer, offset);
+    forwards++;
+  }
+  
+  pthread_mutex_lock(&pNode->mutex);
+
+  while (forwards < pRecv->forwards && pRecv->code == 0) {
+    offset = syncProcessOneBufferedFwd(pPeer, offset);
+    forwards++;
+  }
+
+  nodeRole = TAOS_SYNC_ROLE_SLAVE;
+  sDebug("%s, finish processing buffered fwds:%d", pPeer->id, forwards);
+
+  pthread_mutex_unlock(&pNode->mutex);
+
+  return pRecv->code;
+}
+
+int syncSaveIntoBuffer(SSyncPeer *pPeer, SWalHead *pHead)
+{ 
+  SSyncNode   *pNode = pPeer->pSyncNode;
+  SRecvBuffer *pRecv = pNode->pRecv;
+
+  if (pRecv == NULL) return -1;
+  int len = pHead->len + sizeof(SWalHead);
+
+  if (pRecv->bufferSize - (pRecv->offset - pRecv->buffer) >= len) {
+    memcpy(pRecv->offset, pHead, len);
+    pRecv->offset += len;
+    pRecv->forwards++;
+    sDebug("%s, fwd is saved into queue, ver:%" PRIu64 " fwds:%d", pPeer->id, pHead->version, pRecv->forwards);
+  } else {
+    sError("%s, buffer size:%d is too small", pPeer->id, pRecv->bufferSize);
+    pRecv->code = -1;  // set error code
+  }
+
+  return pRecv->code;
+}
+
+static void syncCloseRecvBuffer(SSyncNode *pNode)
+{
+  if (pNode->pRecv) {
+    tfree(pNode->pRecv->buffer);
+  }
+
+  tfree(pNode->pRecv);
+}
+
+static int syncOpenRecvBuffer(SSyncNode *pNode) 
+{
+  syncCloseRecvBuffer(pNode);
+
+  SRecvBuffer *pRecv = calloc(sizeof(SRecvBuffer), 1);
+  if (pRecv == NULL) return -1;
+
+  pRecv->bufferSize = 5000000;
+  pRecv->buffer = malloc(pRecv->bufferSize);
+  if (pRecv->buffer == NULL) {
+    free(pRecv);
+    return -1;
+  }
+
+  pRecv->offset = pRecv->buffer;
+  pRecv->forwards = 0;
+
+  pNode->pRecv = pRecv;
+
+  return 0;
+}
+
+static int syncRestoreDataStepByStep(SSyncPeer *pPeer)
+{
+  SSyncNode *pNode = pPeer->pSyncNode;
+  nodeSStatus = TAOS_SYNC_STATUS_FILE;
+  uint64_t fversion = 0;
+
+  sDebug("%s, start to restore file", pPeer->id);
+  int code = syncRestoreFile(pPeer, &fversion);
+  if (code < 0) {
+    sError("%s, failed to restore file", pPeer->id);
+    return -1;
+  }
+
+  // if code > 0, data file is changed, notify app, and pass the version 
+  if (code > 0 && pNode->notifyFileSynced) {
+    if ( (*pNode->notifyFileSynced)(pNode->ahandle, fversion) < 0 ) {
+      sError("%s, app not in ready state", pPeer->id);
+      return -1;
+    }
+  }
+
+  nodeVersion = fversion;
+
+  sDebug("%s, start to restore wal", pPeer->id);
+  if (syncRestoreWal(pPeer) < 0) {
+    sError("%s, failed to restore wal", pPeer->id);
+    return -1;
+  }
+
+  nodeSStatus = TAOS_SYNC_STATUS_CACHE;
+  sDebug("%s, start to insert buffered points", pPeer->id);
+  if (syncProcessBufferedFwd(pPeer) < 0) {
+    sError("%s, failed to insert buffered points", pPeer->id);
+    return -1;
+  }
+
+  return 0;
+}
+
+void *syncRestoreData(void *param)
+{
+  SSyncPeer  *pPeer = (SSyncPeer *)param;
+  SSyncNode  *pNode = pPeer->pSyncNode;
+
+  taosBlockSIGPIPE();
+  __sync_fetch_and_add(&tsSyncNum, 1);
+
+  if (syncOpenRecvBuffer(pNode) < 0) {
+    sError("%s, failed to allocate recv buffer", pPeer->id);
+  } else { 
+    if ( syncRestoreDataStepByStep(pPeer) == 0) {
+      sInfo("%s, it is synced successfully", pPeer->id);
+      nodeRole = TAOS_SYNC_ROLE_SLAVE;
+      syncBroadcastStatus(pNode);
+      (*pNode->notifyRole)(pNode->ahandle, nodeRole);
+    } else {
+      sError("%s, failed to restore data, restart connection", pPeer->id);
+      nodeRole = TAOS_SYNC_ROLE_UNSYNCED;
+      syncRestartConnection(pPeer);
+    }
+  }
+
+  nodeSStatus = TAOS_SYNC_STATUS_INIT;
+  tclose(pPeer->syncFd)
+  syncCloseRecvBuffer(pNode);
+  __sync_fetch_and_sub(&tsSyncNum, 1);
+  syncDecPeerRef(pPeer);
+
+  return NULL;
+}
+

src/sync/src/syncRetrieve.c

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <sys/inotify.h>
+#include <unistd.h>
+#include "os.h"
+#include "tlog.h"
+#include "tutil.h"
+#include "tglobal.h"
+#include "ttimer.h"
+#include "tsocket.h"
+#include "twal.h"
+#include "tsync.h"
+#include "syncInt.h"
+
+static int syncAddIntoWatchList(SSyncPeer *pPeer, char *name) 
+{
+  sDebug("%s, start to monitor:%s", pPeer->id, name);
+
+  if (pPeer->notifyFd <=0) {
+    pPeer->watchNum = 0;
+    pPeer->notifyFd = inotify_init1(IN_NONBLOCK);
+    if (pPeer->notifyFd < 0) {
+      sError("%s, failed to init inotify(%s)", pPeer->id, strerror(errno));
+      return -1;
+    }
+
+    if (pPeer->watchFd == NULL) pPeer->watchFd = malloc(sizeof(int)*tsMaxWatchFiles);
+    if (pPeer->watchFd == NULL) {
+      sError("%s, failed to allocate watchFd", pPeer->id);
+      return -1;
+    }
+
+    memset(pPeer->watchFd, -1, sizeof(int)*tsMaxWatchFiles);
+  }
+
+  int *wd = pPeer->watchFd + pPeer->watchNum;
+
+  if (*wd >= 0) {
+    if (inotify_rm_watch(pPeer->notifyFd, *wd) < 0) {
+      sError("%s, failed to remove wd:%d(%s)", pPeer->id, *wd, strerror(errno));
+      return -1;
+    }
+  }
+
+  *wd = inotify_add_watch(pPeer->notifyFd, name, IN_MODIFY);
+  if (*wd == -1) {
+    sError("%s, failed to add %s(%s)", pPeer->id, name, strerror(errno));
+    return -1;
+  }
+
+  pPeer->watchNum++;
+  pPeer->watchNum = (pPeer->watchNum +1) % tsMaxWatchFiles;
+
+  return 0;
+}
+
+static int syncAreFilesModified(SSyncPeer *pPeer) 
+{
+  if (pPeer->notifyFd <=0) return 0;
+
+  char buf[2048]; 
+  int len = read(pPeer->notifyFd, buf, sizeof(buf));
+  if (len <0 && errno != EAGAIN) {
+    sError("%s, failed to read notify FD(%s)", pPeer->id, strerror(errno));    
+    return -1;
+  }
+    
+  int code = 0; 
+  if (len >0) { 
+    sDebug("%s, processed file is changed", pPeer->id);    
+    code = 1;
+  }
+
+  return code;  
+}
+
+static int syncRetrieveFile(SSyncPeer *pPeer)
+{
+  SSyncNode  *pNode = pPeer->pSyncNode;
+  SFileInfo   fileInfo;
+  SFileAck    fileAck;
+  int         code = -1;
+  char        name[TSDB_FILENAME_LEN * 2] = {0};
+
+  memset(&fileInfo, 0, sizeof(fileInfo));
+  memset(&fileAck, 0, sizeof(fileAck));
+
+  while (1) {
+    // retrieve file info
+    fileInfo.name[0] = 0;
+    fileInfo.magic = (*pNode->getFileInfo)(pNode->ahandle, fileInfo.name, &fileInfo.index, TAOS_SYNC_MAX_INDEX, &fileInfo.size, &fileInfo.fversion);   
+    //fileInfo.size = htonl(size);
+
+    // send the file info
+    int32_t ret = taosWriteMsg(pPeer->syncFd, &(fileInfo), sizeof(fileInfo));
+    if (ret < 0 ) break;
+
+    // if no file anymore, break
+    if (fileInfo.magic == 0 || fileInfo.name[0] == 0) { 
+      sDebug("%s, no more files to sync", pPeer->id);    
+      code = 0; break; 
+    }
+
+    // wait for the ack from peer
+    ret = taosReadMsg(pPeer->syncFd, &(fileAck), sizeof(fileAck));
+    if (ret <0)  break;
+
+    // set the peer sync version
+    pPeer->sversion = fileInfo.fversion;
+
+    // get the full path to file
+    snprintf(name, sizeof(name), "%s/%s", pNode->path, fileInfo.name);
+    
+    // add the file into watch list
+    if ( syncAddIntoWatchList(pPeer, name) <0) break;
+
+    // if sync is not required, continue
+    if (fileAck.sync == 0) {
+      fileInfo.index++; 
+      sDebug("%s, %s is the same", pPeer->id, fileInfo.name);    
+      continue; 
+    }
+
+    // send the file to peer
+    int sfd = open(name, O_RDONLY);
+    if ( sfd < 0 ) break;
+
+    ret = taosTSendFile(pPeer->syncFd, sfd, NULL, fileInfo.size); 
+    close(sfd); 
+    if (ret <0) break;
+
+    sDebug("%s, %s is sent, size:%d", pPeer->id, name, fileInfo.size);    
+    fileInfo.index++; 
+
+    // check if processed files are modified 
+    if (syncAreFilesModified(pPeer) != 0) break;
+  }
+
+  if (code < 0) {
+    sError("%s, failed to retrieve file(%s)", pPeer->id, strerror(errno));
+  }
+
+  return code;
+}
+
+/* if only a partial record is read out, set the IN_MODIFY flag in event,
+   so upper layer will reload the file to get a complete record */
+static int syncReadOneWalRecord(int sfd, SWalHead *pHead, uint32_t *pEvent) 
+{ 
+  int ret;
+
+  ret = read(sfd, pHead, sizeof(SWalHead));
+  if (ret < 0) return -1;
+  if (ret == 0) return 0;
+
+  if (ret != sizeof(SWalHead)) {
+    // file is not at end yet, it shall be reloaded
+    *pEvent = *pEvent | IN_MODIFY;
+    return 0;
+  }
+
+  ret = read(sfd, pHead->cont, pHead->len);
+  if (ret <0) return -1;
+
+  if (ret != pHead->len) {
+    // file is not at end yet, it shall be reloaded
+    *pEvent = *pEvent | IN_MODIFY;
+    return 0;
+  }
+
+  return sizeof(SWalHead) + pHead->len;
+}    
+
+static int syncMonitorLastWal(SSyncPeer *pPeer, char *name) 
+{ 
+  pPeer->watchNum = 0;
+  tclose(pPeer->notifyFd);
+  pPeer->notifyFd = inotify_init1(IN_NONBLOCK);
+  if (pPeer->notifyFd < 0) {
+    sError("%s, failed to init inotify(%s)", pPeer->id, strerror(errno));
+    return -1;
+  }
+
+  if (pPeer->watchFd == NULL) pPeer->watchFd = malloc(sizeof(int)*tsMaxWatchFiles);
+  if (pPeer->watchFd == NULL) {
+    sError("%s, failed to allocate watchFd", pPeer->id);
+    return -1;
+  }
+
+  memset(pPeer->watchFd, -1, sizeof(int)*tsMaxWatchFiles);
+  int *wd = pPeer->watchFd;
+ 
+  *wd = inotify_add_watch(pPeer->notifyFd, name, IN_MODIFY | IN_CLOSE_WRITE);
+  if (*wd == -1) {
+    sError("%s, failed to watch last wal(%s)", pPeer->id, strerror(errno));
+    return -1;
+  }
+
+  return 0; 
+}
+
+static uint32_t syncCheckLastWalChanges(SSyncPeer *pPeer, uint32_t *pEvent) 
+{
+  char       buf[2048]; 
+  int  len = read(pPeer->notifyFd, buf, sizeof(buf));
+  if (len <0 && errno != EAGAIN) {
+    sError("%s, failed to read notify FD(%s)", pPeer->id, strerror(errno));    
+    return -1;
+  }
+    
+  if (len == 0) return 0;
+
+  struct inotify_event *event;
+  for (char *ptr = buf; ptr < buf + len; ptr += sizeof(struct inotify_event) + event->len) {
+    event = (struct inotify_event *) ptr;
+    if (event->mask & IN_MODIFY) *pEvent = *pEvent | IN_MODIFY;
+    if (event->mask & IN_CLOSE_WRITE) *pEvent = *pEvent | IN_CLOSE_WRITE;
+  }
+
+  if (pEvent != 0)
+    sDebug("%s, last wal event:0x%x", pPeer->id, *pEvent);
+
+  return 0;
+}
+
+static int syncRetrieveLastWal(SSyncPeer *pPeer, char *name, uint64_t fversion, int64_t offset, uint32_t *pEvent) 
+{
+  SWalHead  *pHead = (SWalHead *) malloc(640000);
+  int        code = -1;
+  int32_t    bytes = 0;
+  int        sfd;
+
+  sfd = open(name, O_RDONLY);
+  if (sfd < 0) return -1;
+  lseek(sfd, offset, SEEK_SET);
+  sDebug("%s, retrieve last wal, offset:%" PRId64 " fversion:%" PRIu64, pPeer->id, offset, fversion);
+
+  while (1) {
+    int wsize = syncReadOneWalRecord(sfd, pHead, pEvent); 
+    if (wsize <0) break;
+    if (wsize == 0) { code = 0; break; }
+
+    sDebug("%s, last wal is forwarded, ver:%" PRIu64, pPeer->id, pHead->version);
+    int ret = taosWriteMsg(pPeer->syncFd, pHead, wsize);
+    if ( ret != wsize ) break;
+    pPeer->sversion = pHead->version;
+
+    bytes += wsize;
+ 
+    if (pHead->version >= fversion && fversion > 0) {
+      code = 0; 
+      bytes = 0; 
+      break;
+    }
+  }
+
+  free(pHead);
+  tclose(sfd); 
+
+  if (code == 0) return bytes;
+  return -1;
+}
+
+static int syncProcessLastWal(SSyncPeer *pPeer, char *wname, uint32_t index) 
+{
+  SSyncNode  *pNode = pPeer->pSyncNode;
+  int         code = -1;
+  char        fname[TSDB_FILENAME_LEN * 2];  // full path to wal file
+
+  if (syncAreFilesModified(pPeer) != 0) return -1;
+
+  while (1) {
+    int32_t  once = 0; // last WAL has once ever been processed 
+    int64_t  offset = 0;
+    uint64_t fversion = 0;
+    uint32_t event = 0;
+
+    // get full path to wal file
+    snprintf(fname, sizeof(fname), "%s/%s", pNode->path, wname);
+    sDebug("%s, start to retrieve last wal:%s", pPeer->id, fname);
+
+    // monitor last wal
+    if (syncMonitorLastWal(pPeer, fname) <0) break;
+
+    while (1) {
+      int32_t bytes = syncRetrieveLastWal(pPeer, fname, fversion, offset, &event);
+      if (bytes < 0) break;
+
+      // check file changes
+      if (syncCheckLastWalChanges(pPeer, &event) <0) break;
+
+      // if file is not updated or updated once, set the fversion and sstatus
+      if (((event & IN_MODIFY) == 0) || once) {
+        if (fversion == 0) {
+          pPeer->sstatus = TAOS_SYNC_STATUS_CACHE;  // start to forward pkt
+          fversion = nodeVersion;    // must read data to fversion
+        }
+      }
+
+      // if all data up to fversion is read out, it is over
+      if (pPeer->sversion >= fversion && fversion > 0) {
+        code = 0; 
+        sDebug("%s, data up to fversion:%ld has been read out, bytes:%d", pPeer->id, fversion, bytes);
+        break;
+      }  
+
+      // if all data are read out, and no update
+      if ((bytes == 0) && ((event & IN_MODIFY) == 0)) {
+        // wal file is closed, break
+        if (event & IN_CLOSE_WRITE) { 
+          code = 0; 
+          sDebug("%s, current wal is closed", pPeer->id);
+          break;
+        }
+ 
+        // wal not closed, it means some data not flushed to disk, wait for a while
+        usleep(10000);
+      }
+
+      // if bytes>0, file is updated, or fversion is not reached but file still open, read again 
+      once = 1;
+      offset += bytes; 
+      sDebug("%s, retrieve last wal, bytes:%d", pPeer->id, bytes);
+      event = event & (~IN_MODIFY); // clear IN_MODIFY flag 
+    }
+
+    if (code < 0) break;
+    if (pPeer->sversion >= fversion && fversion > 0) break;  
+
+    index++;  wname[0] = 0;
+    code = (*pNode->getWalInfo)(pNode->ahandle, wname, &index);
+    if ( code < 0) break;  
+    if ( wname[0] == 0 ) {code = 0; break;}
+
+    // current last wal is closed, there is a new one 
+    sDebug("%s, last wal is closed, try new one", pPeer->id);
+  }
+
+  tclose(pPeer->notifyFd);
+
+  return code;
+}
+
+static int syncRetrieveWal(SSyncPeer *pPeer)
+{
+  SSyncNode  *pNode = pPeer->pSyncNode;
+  char        fname[TSDB_FILENAME_LEN * 3];
+  char        wname[TSDB_FILENAME_LEN * 2];
+  int32_t     size;
+  struct stat fstat;
+  int         code = -1;
+  uint32_t    index = 0;
+
+  while (1) {
+    // retrieve wal info
+    wname[0] = 0;
+    code = (*pNode->getWalInfo)(pNode->ahandle, wname, &index);   
+    if (code < 0) break;  // error
+    if (wname[0] == 0) {  // no wal file
+      sDebug("%s, no wal file", pPeer->id);
+      break;
+    }    
+      
+    if (code == 0) {   // last wal 
+      code = syncProcessLastWal(pPeer, wname, index);
+      break;
+    }
+
+    // get the full path to wal file
+    snprintf(fname, sizeof(fname), "%s/%s", pNode->path, wname);
+
+    // send wal file, 
+    // inotify is not required, old wal file won't be modified, even remove is ok
+    if ( stat(fname, &fstat) < 0 ) break;
+    size = fstat.st_size;
+
+    sDebug("%s, retrieve wal:%s size:%d", pPeer->id, fname, size);    
+    int sfd = open(fname, O_RDONLY);
+    if (sfd < 0) break;
+
+    code = taosTSendFile(pPeer->syncFd, sfd, NULL, size); 
+    close(sfd); 
+    if (code <0) break;
+
+    index++; 
+
+    if (syncAreFilesModified(pPeer) != 0) break; 
+  }
+
+  if (code == 0) {
+    sDebug("%s, wal retrieve is finished", pPeer->id);    
+    pPeer->sstatus = TAOS_SYNC_STATUS_CACHE;
+    SWalHead walHead;
+    memset(&walHead, 0, sizeof(walHead));
+    code = taosWriteMsg(pPeer->syncFd, &walHead, sizeof(walHead));
+  } else {
+    sError("%s, failed to send wal(%s)", pPeer->id, strerror(errno));
+  }
+
+  return code;
+}
+
+static int syncRetrieveDataStepByStep(SSyncPeer *pPeer)
+{
+  SSyncNode  *pNode = pPeer->pSyncNode;
+
+  SFirstPkt firstPkt;
+  memset(&firstPkt, 0, sizeof(firstPkt));
+  firstPkt.syncHead.type = TAOS_SMSG_SYNC_DATA;
+  firstPkt.syncHead.vgId = pNode->vgId;
+  tstrncpy(firstPkt.fqdn, tsNodeFqdn, sizeof(firstPkt.fqdn));
+  firstPkt.port = tsSyncPort;
+
+  if (write(pPeer->syncFd, (char *) &firstPkt, sizeof(firstPkt)) < 0) {
+    sError("%s, failed to send syncCmd", pPeer->id);
+    return -1;
+  }
+
+  pPeer->sversion = 0;  
+  pPeer->sstatus = TAOS_SYNC_STATUS_FILE;
+  sDebug("%s, start to retrieve file", pPeer->id);
+  if (syncRetrieveFile(pPeer) < 0) {
+    sError("%s, failed to retrieve file", pPeer->id);
+    return -1;
+  }
+
+  // if no files are synced, there must be wal to sync, sversion must be larger than one
+  if (pPeer->sversion == 0) 
+    pPeer->sversion = 1;
+
+  sDebug("%s, start to retrieve wal", pPeer->id);
+  if (syncRetrieveWal(pPeer) < 0) {
+    sError("%s, failed to retrieve wal", pPeer->id);
+    return -1;
+  }
+
+  return 0;
+}
+
+void *syncRetrieveData(void *param)
+{
+  SSyncPeer   *pPeer = (SSyncPeer *)param;
+  taosBlockSIGPIPE();
+
+  pPeer->syncFd = taosOpenTcpClientSocket(pPeer->ip, pPeer->port, 0);
+  if (pPeer->syncFd < 0) {
+    sError("%s, failed to open socket to sync", pPeer->id);
+  } else {
+    sInfo("%s, sync tcp is setup", pPeer->id);
+  
+    if (syncRetrieveDataStepByStep(pPeer) == 0) {
+      sDebug("%s, sync retrieve process is successful", pPeer->id);
+    } else {
+      sError("%s, failed to retrieve data, restart connection", pPeer->id);
+      syncRestartConnection(pPeer);
+    }
+  }
+
+  tclose(pPeer->notifyFd);
+  tclose(pPeer->syncFd);
+  syncDecPeerRef(pPeer);
+
+  return NULL;
+}

src/sync/src/tarbitrator.c

+/*
+ * Copyright (c) 2019 TAOS Data, Inc. <jhtao@taosdata.com>
+ *
+ * This program is free software: you can use, redistribute, and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3
+ * or later ("AGPL"), as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+//#define _DEFAULT_SOURCE
+#include "os.h"
+#include "hash.h"
+#include "tlog.h"
+#include "tutil.h"
+#include "ttimer.h"
+#include "ttime.h"
+#include "tsocket.h"
+#include "tglobal.h"
+#include "taoserror.h"
+#include "taosTcpPool.h"
+#include "twal.h"
+#include "tsync.h"
+#include "syncInt.h"
+
+static void arbSignalHandler(int32_t signum, siginfo_t *sigInfo, void *context);
+static void arbProcessIncommingConnection(int connFd, uint32_t sourceIp);
+static void arbProcessBrokenLink(void *param);
+static int  arbProcessPeerMsg(void *param, void *buffer);
+static sem_t    tsArbSem;
+static ttpool_h tsArbTcpPool;
+
+typedef struct {
+  char  id[TSDB_EP_LEN+24];
+  int   nodeFd;
+  void *pConn;
+} SNodeConn;
+
+int main(int argc, char *argv[]) {
+  char     arbLogPath[TSDB_FILENAME_LEN + 16] = {0};
+
+  for (int i=1; i<argc; ++i) {
+    if (strcmp(argv[i], "-p")==0 && i < argc-1) {
+      tsServerPort = atoi(argv[++i]);
+    } else if (strcmp(argv[i], "-d")==0 && i < argc-1) {
+      debugFlag = atoi(argv[++i]);
+    } else if (strcmp(argv[i], "-g")==0 && i < argc-1) {
+      if (strlen(argv[++i]) > TSDB_FILENAME_LEN) continue; 
+      tstrncpy(arbLogPath, argv[i], sizeof(arbLogPath));
+    } else {
+      printf("\nusage: %s [options] \n", argv[0]);
+      printf("  [-p port]: server port number, default is:%d\n", tsServerPort);
+      printf("  [-d debugFlag]: debug flag, default:%d\n", debugFlag);
+      printf("  [-g logFilePath]: log file pathe, default:%s\n", arbLogPath);
+      printf("  [-h help]: print out this help\n\n");
+      exit(0);
+    }
+  }
+  
+ if (sem_init(&tsArbSem, 0, 0) != 0) {
+    printf("failed to create exit semphore\n");
+    exit(EXIT_FAILURE);
+  }
+
+  /* Set termination handler. */
+  struct sigaction act = {{0}};
+  act.sa_flags = SA_SIGINFO;
+  act.sa_sigaction = arbSignalHandler;
+  sigaction(SIGTERM, &act, NULL);
+  sigaction(SIGHUP, &act, NULL);
+  sigaction(SIGINT, &act, NULL);
+
+  tsAsyncLog = 0;
+  strcat(arbLogPath, "/arbitrator.log");
+  taosInitLog(arbLogPath, 1000000, 10);
+
+  taosGetFqdn(tsNodeFqdn);
+  tsSyncPort = tsServerPort + TSDB_PORT_SYNC;
+
+  SPoolInfo info;
+  info.numOfThreads = 1;
+  info.serverIp = 0;
+  info.port = tsSyncPort;
+  info.bufferSize = 640000;
+  info.processBrokenLink = arbProcessBrokenLink;
+  info.processIncomingMsg = arbProcessPeerMsg;
+  info.processIncomingConn = arbProcessIncommingConnection;
+  tsArbTcpPool = taosOpenTcpThreadPool(&info);
+  
+  if (tsArbTcpPool == NULL) {
+   sDebug("failed to open TCP thread pool, exit...");
+   return -1;
+  }
+
+  sInfo("TAOS arbitrator: %s:%d is running", tsNodeFqdn, tsServerPort);
+
+  for (int res = sem_wait(&tsArbSem); res != 0; res = sem_wait(&tsArbSem)) {
+    if (res != EINTR) break;
+  }
+
+  taosCloseTcpThreadPool(tsArbTcpPool);
+  sInfo("TAOS arbitrator is shut down\n");
+  closelog();
+
+  return 0;
+}
+
+static void arbProcessIncommingConnection(int connFd, uint32_t sourceIp)
+{
+  char  ipstr[24];
+  tinet_ntoa(ipstr, sourceIp);
+  sDebug("peer TCP connection from ip:%s", ipstr);
+
+  SFirstPkt firstPkt;
+  if (taosReadMsg(connFd, &firstPkt, sizeof(firstPkt)) != sizeof(firstPkt)) {
+    sError("failed to read peer first pkt from ip:%s(%s)", ipstr, strerror(errno));
+    taosCloseSocket(connFd);
+    return;
+  }
+
+  SNodeConn *pNode = (SNodeConn *) calloc(sizeof(SNodeConn), 1);
+  if (pNode == NULL) {
+    sError("failed to allocate memory(%s)", strerror(errno));
+    taosCloseSocket(connFd);
+    return;
+  }
+
+  snprintf(pNode->id, sizeof(pNode->id), "vgId:%d peer:%s:%d", firstPkt.sourceId, firstPkt.fqdn, firstPkt.port); 
+  if (firstPkt.syncHead.vgId) {  
+    sDebug("%s, vgId in head is not zero, close the connection", pNode->id);
+    tfree(pNode);
+    taosCloseSocket(connFd);
+    return;
+  }
+
+  sDebug("%s, arbitrator request is accepted", pNode->id);
+  pNode->nodeFd = connFd;
+  pNode->pConn = taosAllocateTcpConn(tsArbTcpPool, pNode, connFd);
+
+  return;
+}
+
+static void arbProcessBrokenLink(void *param) {
+  SNodeConn *pNode = param;
+
+  sDebug("%s, TCP link is broken(%s), close connection", pNode->id, strerror(errno));
+  tfree(pNode);
+}
+
+static int arbProcessPeerMsg(void *param, void *buffer)
+{
+  SNodeConn  *pNode = param;
+  SSyncHead   head;
+  int         bytes = 0;
+  char       *cont = (char *)buffer;
+
+  int hlen = taosReadMsg(pNode->nodeFd, &head, sizeof(head));
+  if (hlen != sizeof(head)) {
+    sDebug("%s, failed to read msg, hlen:%d", pNode->id, hlen);
+    return -1;
+  }
+
+  bytes = taosReadMsg(pNode->nodeFd, cont, head.len);
+  if (bytes != head.len) {
+    sDebug("%s, failed to read, bytes:%d len:%d", pNode->id, bytes, head.len);
+    return -1;
+  }
+
+  sDebug("%s, msg is received, len:%d", pNode->id, head.len);
+  return 0;
+}
+
+static void arbSignalHandler(int32_t signum, siginfo_t *sigInfo, void *context) {
+
+  struct sigaction act = {{0}};
+  act.sa_handler = SIG_IGN;
+  sigaction(SIGTERM, &act, NULL);
+  sigaction(SIGHUP, &act, NULL);
+  sigaction(SIGINT, &act, NULL);
+
+  sInfo("shut down signal is %d, sender PID:%d", signum, sigInfo->si_pid);
+
+  // inform main thread to exit
+  sem_post(&tsArbSem);
+}
+