shm

include/common/tglobal.h

@@ -51,6 +51,7 @@ extern int32_t tsCompatibleModel;
 extern bool    tsEnableSlaveQuery;
 extern bool    tsPrintAuth;
 extern int64_t tsTickPerDay[3];
+extern bool    tsMultiProcess;
 
 // monitor
 extern bool     tsEnableMonitor;

include/dnode/mgmt/dnode.h

@@ -33,8 +33,7 @@ typedef struct SDnode SDnode;
 int32_t dndInit();
 
 /**
- * @brief clear the environment
- *
+ * @brief Clear the environment
  */
 void dndCleanup();
 
@@ -51,6 +50,8 @@ typedef struct {
   int32_t   numOfDisks;
 } SDnodeObjCfg;
 
+typedef enum { DND_EVENT_STOP = 1, DND_EVENT_RELOAD } EDndEvent;
+
 /**
  * @brief Initialize and start the dnode.
  *
@@ -66,6 +67,21 @@ SDnode *dndCreate(SDnodeObjCfg *pCfg);
  */
 void dndClose(SDnode *pDnode);
 
+/**
+ * @brief Run dnode until specific event is receive.
+ *
+ * @param pDnode The dnode object to run.
+ */
+void dndRun(SDnode *pDnode);
+
+/**
+ * @brief Handle event in the dnode.
+ *
+ * @param pDnode The dnode object to close.
+ * @param event The event to handle.
+ */
+void dndeHandleEvent(SDnode *pDnode, EDndEvent event);
+
 #ifdef __cplusplus
 }
 #endif

include/util/tprocess.h

@@ -48,8 +48,9 @@ typedef struct {
 
 SProcObj *taosProcInit(const SProcCfg *pCfg);
 void      taosProcCleanup(SProcObj *pProc);
-int32_t   taosProcStart(SProcObj *pProc);
+int32_t   taosProcRun(SProcObj *pProc);
 void      taosProcStop(SProcObj *pProc);
+bool      taosProcIsChild(SProcObj *pProc);
 
 int32_t taosProcPutToChildQueue(SProcObj *pProc, void *pHead, int32_t headLen, void *pBody, int32_t bodyLen);
 int32_t taosProcPutToParentQueue(SProcObj *pProc, void *pHead, int32_t headLen, void *pBody, int32_t bodyLen);

source/common/src/tglobal.c

@@ -45,6 +45,7 @@ float   tsRatioOfQueryCores = 1.0f;
 int32_t tsMaxBinaryDisplayWidth = 30;
 bool    tsEnableSlaveQuery = 1;
 bool    tsPrintAuth = 0;
+bool    tsMultiProcess = 0;
 
 // monitor
 bool     tsEnableMonitor = 1;
@@ -339,6 +340,7 @@ static int32_t taosAddServerCfg(SConfig *pCfg) {
   if (cfgAddBool(pCfg, "printAuth", tsPrintAuth, 0) != 0) return -1;
   if (cfgAddBool(pCfg, "slaveQuery", tsEnableSlaveQuery, 0) != 0) return -1;
   if (cfgAddBool(pCfg, "deadLockKillQuery", tsDeadLockKillQuery, 0) != 0) return -1;
+  if (cfgAddBool(pCfg, "multiProcess", tsMultiProcess, 0) != 0) return -1;
 
   if (cfgAddBool(pCfg, "monitor", tsEnableMonitor, 0) != 0) return -1;
   if (cfgAddInt32(pCfg, "monitorInterval", tsMonitorInterval, 1, 360000, 0) != 0) return -1;
@@ -456,6 +458,7 @@ static int32_t taosSetServerCfg(SConfig *pCfg) {
   tsPrintAuth = cfgGetItem(pCfg, "printAuth")->bval;
   tsEnableSlaveQuery = cfgGetItem(pCfg, "slaveQuery")->bval;
   tsDeadLockKillQuery = cfgGetItem(pCfg, "deadLockKillQuery")->bval;
+  tsMultiProcess = cfgGetItem(pCfg, "multiProcess")->bval;
 
   tsEnableMonitor = cfgGetItem(pCfg, "monitor")->bval;
   tsMonitorInterval = cfgGetItem(pCfg, "monitorInterval")->i32;

source/dnode/mgmt/daemon/inc/dmnInt.h

@@ -28,12 +28,19 @@
 extern "C" {
 #endif
 
-SDnodeObjCfg dmnGetObjCfg();
+#define dFatal(...) { if (dDebugFlag & DEBUG_FATAL) { taosPrintLog("DND FATAL ", DEBUG_FATAL, 255, __VA_ARGS__); }}
+#define dError(...) { if (dDebugFlag & DEBUG_ERROR) { taosPrintLog("DND ERROR ", DEBUG_ERROR, 255, __VA_ARGS__); }}
+#define dWarn(...)  { if (dDebugFlag & DEBUG_WARN)  { taosPrintLog("DND WARN ", DEBUG_WARN, 255, __VA_ARGS__); }}
+#define dInfo(...)  { if (dDebugFlag & DEBUG_INFO)  { taosPrintLog("DND ", DEBUG_INFO, 255, __VA_ARGS__); }}
+#define dDebug(...) { if (dDebugFlag & DEBUG_DEBUG) { taosPrintLog("DND ", DEBUG_DEBUG, dDebugFlag, __VA_ARGS__); }}
+#define dTrace(...) { if (dDebugFlag & DEBUG_TRACE) { taosPrintLog("DND ", DEBUG_TRACE, dDebugFlag, __VA_ARGS__); }}
 
 void dmnDumpCfg();
 void dmnPrintVersion();
 void dmnGenerateGrant();
 
+SDnodeObjCfg dmnGetObjCfg();
+
 #ifdef __cplusplus
 }
 #endif

source/dnode/mgmt/daemon/src/dmnMain.c

@@ -17,18 +17,18 @@
 #include "dmnInt.h"
 
 static struct {
-  bool stop;
-  bool dumpConfig;
-  bool generateGrant;
-  bool printAuth;
-  bool printVersion;
-  char envFile[PATH_MAX];
-  char apolloUrl[PATH_MAX];
+  bool    dumpConfig;
+  bool    generateGrant;
+  bool    printAuth;
+  bool    printVersion;
+  char    envFile[PATH_MAX];
+  char    apolloUrl[PATH_MAX];
+  SDnode *pDnode;
 } dmn = {0};
 
 static void dmnSigintHandle(int signum, void *info, void *ctx) {
-  uInfo("singal:%d is received", signum);
-  dmn.stop = true;
+  dInfo("singal:%d is received", signum);
+  dndeHandleEvent(dmn.pDnode, DND_EVENT_STOP);
 }
 
 static void dmnSetSignalHandle() {
@@ -39,13 +39,6 @@ static void dmnSetSignalHandle() {
   taosSetSignal(SIGBREAK, dmnSigintHandle);
 }
 
-static void dmnWaitSignal() {
-  dmnSetSignalHandle();
-  while (!dmn.stop) {
-    taosMsleep(100);
-  }
-}
-
 static int32_t dmnParseOption(int32_t argc, char const *argv[]) {
   for (int32_t i = 1; i < argc; ++i) {
     if (strcmp(argv[i], "-c") == 0) {
@@ -74,20 +67,22 @@ static int32_t dmnParseOption(int32_t argc, char const *argv[]) {
 
 int32_t dmnRunDnode() {
   if (dndInit() != 0) {
-    uInfo("Failed to start TDengine, please check the log");
+    dInfo("failed to initialize dnode environment since %s", terrstr());
     return -1;
   }
 
   SDnodeObjCfg objCfg = dmnGetObjCfg();
   SDnode      *pDnode = dndCreate(&objCfg);
   if (pDnode == NULL) {
-    uInfo("Failed to start TDengine, please check the log");
+    dError("failed to to create dnode object since %s", terrstr());
     return -1;
+  } else {
+    dmn.pDnode = pDnode;
   }
 
-  uInfo("Started TDengine service successfully.");
-  dmnWaitSignal();
-  uInfo("TDengine is shut down!");
+  dInfo("start the TDengine service");
+  dndRun(pDnode);
+  dInfo("start shutting down the TDengine service");
 
   dndClose(pDnode);
   dndCleanup();
@@ -98,7 +93,7 @@ int32_t dmnRunDnode() {
 
 int main(int argc, char const *argv[]) {
   if (!taosCheckSystemIsSmallEnd()) {
-    uError("TDengine does not run on non-small-end machines.");
+    dError("failed to start TDengine since on non-small-end machines");
     return -1;
   }
 
@@ -117,18 +112,19 @@ int main(int argc, char const *argv[]) {
   }
 
   if (taosCreateLog("taosdlog", 1, configDir, dmn.envFile, dmn.apolloUrl, NULL, 0) != 0) {
-    uInfo("Failed to start TDengine since read config error");
+    dError("failed to start TDengine since read log config error");
     return -1;
   }
 
   if (taosInitCfg(configDir, dmn.envFile, dmn.apolloUrl, NULL, 0) != 0) {
-    uInfo("Failed to start TDengine since read config error");
+    dError("failed to start TDengine since read config error");
     return -1;
   }
 
   if (dmn.dumpConfig) {
     dmnDumpCfg();
     taosCleanupCfg();
+    taosCloseLog();
     return 0;
   }
 

source/dnode/mgmt/impl/inc/dndEnv.h

@@ -139,7 +139,7 @@ typedef struct {
 } STransMgmt;
 
 typedef struct SDnode {
-  EStat        stat;
+  EDndStatus   status;
   SDnodeObjCfg cfg;
   SDnodeDir    dir;
   TdFilePtr    pLockFile;
@@ -152,6 +152,7 @@ typedef struct SDnode {
   STransMgmt   tmgmt;
   STfs        *pTfs;
   SStartupReq  startup;
+  EDndEvent    event;
 } SDnode;
 
 int32_t dndGetMonitorDiskInfo(SDnode *pDnode, SMonDiskInfo *pInfo);

source/dnode/mgmt/impl/inc/dndInt.h

@@ -56,16 +56,16 @@ extern "C" {
 #define dDebug(...) { if (dDebugFlag & DEBUG_DEBUG) { taosPrintLog("DND ", DEBUG_DEBUG, dDebugFlag, __VA_ARGS__); }}
 #define dTrace(...) { if (dDebugFlag & DEBUG_TRACE) { taosPrintLog("DND ", DEBUG_TRACE, dDebugFlag, __VA_ARGS__); }}
 
-typedef enum { DND_STAT_INIT, DND_STAT_RUNNING, DND_STAT_STOPPED } EStat;
+typedef enum { DND_STAT_INIT, DND_STAT_RUNNING, DND_STAT_STOPPED } EDndStatus;
 typedef enum { DND_WORKER_SINGLE, DND_WORKER_MULTI } EWorkerType;
 typedef enum { DND_ENV_INIT = 0, DND_ENV_READY = 1, DND_ENV_CLEANUP = 2 } EEnvStat;
 typedef void (*DndMsgFp)(SDnode *pDnode, SRpcMsg *pMsg, SEpSet *pEps);
 
 typedef int32_t (*MndMsgFp)(SDnode *pDnode, SMndMsg *pMnodeMsg);
 
-EStat       dndGetStat(SDnode *pDnode);
-void        dndSetStat(SDnode *pDnode, EStat stat);
-const char *dndStatStr(EStat stat);
+EDndStatus  dndGetStatus(SDnode *pDnode);
+void        dndSetStatus(SDnode *pDnode, EDndStatus stat);
+const char *dndStatStr(EDndStatus stat);
 
 void dndReportStartup(SDnode *pDnode, char *pName, char *pDesc);
 void dndGetStartup(SDnode *pDnode, SStartupReq *pStartup);

source/dnode/mgmt/impl/mnodeMgmt/src/mmMgmt.c

@@ -143,7 +143,7 @@ int32_t mmOpen(SDnode *pDnode, SMnodeOpt *pOption) {
       return -1;
     }
 
-    return taosProcStart(pMgmt->pProcess);
+    return taosProcRun(pMgmt->pProcess);
   }
 
   return code;

source/dnode/mgmt/impl/src/dndEnv.c

@@ -28,15 +28,17 @@
 
 static int8_t once = DND_ENV_INIT;
 
-EStat dndGetStat(SDnode *pDnode) { return pDnode->stat; }
+EDndStatus dndGetStatus(SDnode *pDnode) { return pDnode->status; }
 
-void dndSetStat(SDnode *pDnode, EStat stat) {
-  dDebug("dnode status set from %s to %s", dndStatStr(pDnode->stat), dndStatStr(stat));
-  pDnode->stat = stat;
+void dndSetStatus(SDnode *pDnode, EDndStatus status) {
+  if (pDnode->status != status) {
+    dDebug("dnode status set from %s to %s", dndStatStr(pDnode->status), dndStatStr(status));
+    pDnode->status = status;
+  }
 }
 
-const char *dndStatStr(EStat stat) {
-  switch (stat) {
+const char *dndStatStr(EDndStatus status) {
+  switch (status) {
     case DND_STAT_INIT:
       return "init";
     case DND_STAT_RUNNING:
@@ -57,7 +59,7 @@ void dndReportStartup(SDnode *pDnode, char *pName, char *pDesc) {
 
 void dndGetStartup(SDnode *pDnode, SStartupReq *pStartup) {
   memcpy(pStartup, &pDnode->startup, sizeof(SStartupReq));
-  pStartup->finished = (dndGetStat(pDnode) == DND_STAT_RUNNING);
+  pStartup->finished = (dndGetStatus(pDnode) == DND_STAT_RUNNING);
 }
 
 static TdFilePtr dndCheckRunning(char *dataDir) {
@@ -165,7 +167,7 @@ SDnode *dndCreate(SDnodeObjCfg *pCfg) {
     return NULL;
   }
 
-  dndSetStat(pDnode, DND_STAT_INIT);
+  dndSetStatus(pDnode, DND_STAT_INIT);
 
   if (dndInitDir(pDnode, pCfg) != 0) {
     dError("failed to init dnode dir since %s", terrstr());
@@ -233,7 +235,7 @@ SDnode *dndCreate(SDnodeObjCfg *pCfg) {
     return NULL;
   }
 
-  dndSetStat(pDnode, DND_STAT_RUNNING);
+  dndSetStatus(pDnode, DND_STAT_RUNNING);
   dndSendStatusReq(pDnode);
   dndReportStartup(pDnode, "TDengine", "initialized successfully");
   dInfo("dnode object is created, data:%p", pDnode);
@@ -244,13 +246,13 @@ SDnode *dndCreate(SDnodeObjCfg *pCfg) {
 void dndClose(SDnode *pDnode) {
   if (pDnode == NULL) return;
 
-  if (dndGetStat(pDnode) == DND_STAT_STOPPED) {
+  if (dndGetStatus(pDnode) == DND_STAT_STOPPED) {
     dError("dnode is shutting down, data:%p", pDnode);
     return;
   }
 
   dInfo("start to close dnode, data:%p", pDnode);
-  dndSetStat(pDnode, DND_STAT_STOPPED);
+  dndSetStatus(pDnode, DND_STAT_STOPPED);
   dndCleanupTrans(pDnode);
   dndStopMgmt(pDnode);
   mmCleanup(pDnode);
@@ -331,4 +333,12 @@ int32_t dndGetMonitorDiskInfo(SDnode *pDnode, SMonDiskInfo *pInfo) {
   pInfo->tempdir.size = tsTempSpace.size;
 
   return tfsGetMonitorInfo(pDnode->pTfs, pInfo);
-}
\ No newline at end of file
+}
+
+void dndRun(SDnode *pDnode) {
+  while (pDnode->event != DND_EVENT_STOP) {
+    taosMsleep(100);
+  }
+}
+
+void dndeHandleEvent(SDnode *pDnode, EDndEvent event) { pDnode->event = event; }
\ No newline at end of file

source/dnode/mgmt/impl/src/dndMgmt.c

@@ -555,7 +555,7 @@ static void *dnodeThreadRoutine(void *param) {
   while (true) {
     pthread_testcancel();
     taosMsleep(200);
-    if (dndGetStat(pDnode) != DND_STAT_RUNNING || pMgmt->dropped) {
+    if (dndGetStatus(pDnode) != DND_STAT_RUNNING || pMgmt->dropped) {
       continue;
     }
 

source/dnode/mgmt/impl/src/dndTransport.c

@@ -161,7 +161,7 @@ static void dndProcessResponse(void *parent, SRpcMsg *pRsp, SEpSet *pEpSet) {
 
   tmsg_t msgType = pRsp->msgType;
 
-  if (dndGetStat(pDnode) == DND_STAT_STOPPED) {
+  if (dndGetStatus(pDnode) == DND_STAT_STOPPED) {
     if (pRsp == NULL || pRsp->pCont == NULL) return;
     dTrace("RPC %p, rsp:%s ignored since dnode exiting, app:%p", pRsp->handle, TMSG_INFO(msgType), pRsp->ahandle);
     rpcFreeCont(pRsp->pCont);
@@ -229,13 +229,13 @@ static void dndProcessRequest(void *param, SRpcMsg *pReq, SEpSet *pEpSet) {
     return;
   }
 
-  if (dndGetStat(pDnode) == DND_STAT_STOPPED) {
+  if (dndGetStatus(pDnode) == DND_STAT_STOPPED) {
     dError("RPC %p, req:%s ignored since dnode exiting, app:%p", pReq->handle, TMSG_INFO(msgType), pReq->ahandle);
     SRpcMsg rspMsg = {.handle = pReq->handle, .code = TSDB_CODE_DND_OFFLINE, .ahandle = pReq->ahandle};
     rpcSendResponse(&rspMsg);
     rpcFreeCont(pReq->pCont);
     return;
-  } else if (dndGetStat(pDnode) != DND_STAT_RUNNING) {
+  } else if (dndGetStatus(pDnode) != DND_STAT_RUNNING) {
     dError("RPC %p, req:%s ignored since dnode not running, app:%p", pReq->handle, TMSG_INFO(msgType), pReq->ahandle);
     SRpcMsg rspMsg = {.handle = pReq->handle, .code = TSDB_CODE_APP_NOT_READY, .ahandle = pReq->ahandle};
     rpcSendResponse(&rspMsg);

source/util/src/tlog.c

@@ -141,6 +141,7 @@ void taosCloseLog() {
   if (taosCheckPthreadValid(tsLogObj.logHandle->asyncThread)) {
     pthread_join(tsLogObj.logHandle->asyncThread, NULL);
   }
+  tsLogInited = 0;
   // In case that other threads still use log resources causing invalid write in valgrind
   // we comment two lines below.
   // taosLogBuffDestroy(tsLogObj.logHandle);

source/util/src/tprocess.c

@@ -374,8 +374,6 @@ SProcObj *taosProcInit(const SProcCfg *pCfg) {
   if (!pProc->testFlag) {
     pProc->pid = fork();
     if (pProc->pid == 0) {
-      // tsLogInited = 0;
-      taosInitLog("mnodelog", 1);
       pProc->isChild = 1;
       uInfo("this is child process, pid:%d", pProc->pid);
     } else {
@@ -410,7 +408,7 @@ static void taosProcThreadLoop(SProcQueue *pQueue) {
   }
 }
 
-int32_t taosProcStart(SProcObj *pProc) {
+int32_t taosProcRun(SProcObj *pProc) {
   pthread_attr_t thAttr = {0};
   pthread_attr_init(&thAttr);
   pthread_attr_setdetachstate(&thAttr, PTHREAD_CREATE_JOINABLE);
@@ -442,6 +440,8 @@ void taosProcStop(SProcObj *pProc) {
   // join
 }
 
+bool taosProcIsChild(SProcObj *pProc) { return pProc->isChild; }
+
 void taosProcCleanup(SProcObj *pProc) {
   if (pProc != NULL) {
     uDebug("proc:%s, clean up", pProc->name);