diff --git a/src/os/inc/os.h b/src/os/inc/os.h
index 6006f1b9690373158300734728a2a21e472a8776..6731ca6d7db9ce72e72a88a1b9dadf76fb8ec87e 100644
--- a/src/os/inc/os.h
+++ b/src/os/inc/os.h
@@ -20,42 +20,7 @@
 extern "C" {
 #endif
 
-#ifdef _TD_DARWIN_64
-#include "osDarwin.h"
-#endif
-
-#ifdef _TD_ARM_64
-#include "osArm64.h"
-#endif
-
-#ifdef _TD_ARM_32
-#include "osArm32.h"
-#endif
-
-#ifdef _TD_MIPS_64
-#include "osMips64.h"
-#endif
-
-#ifdef _TD_LINUX_64
-#include "osLinux64.h"
-#endif
-
-#ifdef _TD_LINUX_32
-#include "osLinux32.h"
-#endif
-
-#ifdef _ALPINE
-#include "osAlpine.h"
-#endif
-
-#ifdef _TD_NINGSI_60
-#include "osNingsi.h"
-#endif
-
-#if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
-#include "osWindows.h"
-#endif
-
+#include "osInc.h"
 #include "osDef.h"
 #include "osAtomic.h"
 #include "osDir.h"
diff --git a/src/os/inc/osAlpine.h b/src/os/inc/osAlpine.h
deleted file mode 100644
index eba94593955e32fc354500758bd2af53060eaa7a..0000000000000000000000000000000000000000
--- a/src/os/inc/osAlpine.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * 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_ALPINE_H
-#define TDENGINE_OS_ALPINE_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>
-#include <math.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
diff --git a/src/os/inc/osArm32.h b/src/os/inc/osArm32.h
deleted file mode 100644
index 54835a1ca8d95b1b05707f165301ac5defc3e961..0000000000000000000000000000000000000000
--- a/src/os/inc/osArm32.h
+++ /dev/null
@@ -1,92 +0,0 @@
-/*
- * 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_ARM32_H
-#define TDENGINE_OS_ARM32_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 <math.h>
-#include <poll.h>
-
-#define TAOS_OS_FUNC_LZ4
-  #define BUILDIN_CLZL(val) __builtin_clzll(val)
-  #define BUILDIN_CTZL(val) __builtin_ctzll(val)
-  #define BUILDIN_CLZ(val) __builtin_clz(val)
-  #define BUILDIN_CTZ(val) __builtin_ctz(val)
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/src/os/inc/osArm64.h b/src/os/inc/osArm64.h
deleted file mode 100644
index 76098f684617abb7d96a17c2a13238b82cb69cef..0000000000000000000000000000000000000000
--- a/src/os/inc/osArm64.h
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * 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_ARM64_H
-#define TDENGINE_OS_ARM64_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>
-#include <math.h>
-#include <poll.h>
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/src/os/inc/osDarwin.h b/src/os/inc/osDarwin.h
deleted file mode 100644
index 5b8d27568db325026feec2d79d66bcf09bc3bc97..0000000000000000000000000000000000000000
--- a/src/os/inc/osDarwin.h
+++ /dev/null
@@ -1,99 +0,0 @@
-/*
- * 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_DARWIN_H
-#define TDENGINE_OS_DARWIN_H
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <arpa/inet.h>
-#include <assert.h>
-#include <ctype.h>
-#include <dirent.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/file.h>
-#include <sys/ioctl.h>
-#include <sys/mman.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 <dispatch/dispatch.h>
-#include <fcntl.h>
-#include <sys/utsname.h>
-#include <math.h>
-#include "osEok.h"
-
-// specific
-typedef int(*__compar_fn_t)(const void *, const void *);
-
-// for send function in tsocket.c
-#if defined(MSG_NOSIGNAL)
-#undef MSG_NOSIGNAL
-#endif
-
-#define MSG_NOSIGNAL             0
-
-#define SO_NO_CHECK              0x1234
-#define SOL_TCP                  0x1234
-#define TCP_KEEPIDLE             0x1234
-
-#ifndef PTHREAD_MUTEX_RECURSIVE_NP
-  #define  PTHREAD_MUTEX_RECURSIVE_NP PTHREAD_MUTEX_RECURSIVE
-#endif
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/src/os/inc/osDef.h b/src/os/inc/osDef.h
index 74256e009165d16854225d9c4d40d17e5b378359..7b5e9c84477db8dc1ee8d9afedbf5a04b06dccda 100644
--- a/src/os/inc/osDef.h
+++ b/src/os/inc/osDef.h
@@ -20,6 +20,109 @@
 extern "C" {
 #endif
 
+#if defined(TD_DARWIN_64)
+  // specific
+  typedef int(*__compar_fn_t)(const void *, const void *);
+
+  // for send function in tsocket.c
+  #if defined(MSG_NOSIGNAL)
+    #undef MSG_NOSIGNAL
+  #endif
+
+  #define MSG_NOSIGNAL             0
+
+  #define SO_NO_CHECK              0x1234
+  #define SOL_TCP                  0x1234
+  #define TCP_KEEPIDLE             0x1234
+
+  #ifndef PTHREAD_MUTEX_RECURSIVE_NP
+    #define PTHREAD_MUTEX_RECURSIVE_NP PTHREAD_MUTEX_RECURSIVE
+  #endif
+#endif
+
+#if defined(_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
+
+#if defined(_TD_ARM_32)
+  #define BUILDIN_CTZL(val) __builtin_ctzll(val)
+  #define BUILDIN_CLZ(val) __builtin_clz(val)
+  #define BUILDIN_CTZ(val) __builtin_ctz(val)
+#endif
+
+#if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
+  char *stpcpy (char *dest, const char *src);
+  char *stpncpy (char *dest, const char *src, size_t n);
+
+  // specific
+  typedef int (*__compar_fn_t)(const void *, const void *);
+  #define ssize_t int
+  #define bzero(ptr, size) memset((ptr), 0, (size))
+  #define strcasecmp  _stricmp
+  #define strncasecmp _strnicmp
+  #define wcsncasecmp _wcsnicmp
+  #define strtok_r strtok_s
+  #define snprintf _snprintf
+  #define in_addr_t unsigned long
+  #define socklen_t int
+
+  struct tm *localtime_r(const time_t *timep, struct tm *result);
+  char *     strptime(const char *buf, const char *fmt, struct tm *tm);
+  char *     strsep(char **stringp, const char *delim);
+  char *     getpass(const char *prefix);
+  int        flock(int fd, int option);
+  char *     strndup(const char *s, size_t n);
+  int        gettimeofday(struct timeval *ptv, void *pTimeZone);
+
+  // for send function in tsocket.c
+  #define MSG_NOSIGNAL             0
+  #define SO_NO_CHECK              0x1234
+  #define SOL_TCP                  0x1234
+
+  #ifndef TCP_KEEPCNT
+  #define TCP_KEEPCNT              0x1234
+  #endif
+
+  #ifndef TCP_KEEPIDLE
+  #define TCP_KEEPIDLE             0x1234
+  #endif
+
+  #ifndef TCP_KEEPINTVL
+  #define TCP_KEEPINTVL            0x1234
+  #endif
+
+  #define SHUT_RDWR                SD_BOTH
+  #define SHUT_RD                  SD_RECEIVE
+  #define SHUT_WR                  SD_SEND
+
+  #define LOCK_EX 1
+  #define LOCK_NB 2
+  #define LOCK_UN 3
+
+  #ifndef PATH_MAX
+  #define PATH_MAX 256
+  #endif
+
+  typedef struct {
+    int    we_wordc;
+    char  *we_wordv[1];
+    int    we_offs;
+    char   wordPos[1025];
+  } wordexp_t;
+  int  wordexp(char *words, wordexp_t *pwordexp, int flags);
+  void wordfree(wordexp_t *pwordexp);
+
+  #define openlog(a, b, c)
+  #define closelog()
+  #define LOG_ERR 0
+  #define LOG_INFO 1
+  void syslog(int unused, const char *format, ...);
+#endif
+
 #ifndef WINDOWS
   #ifndef O_BINARY
     #define O_BINARY 0
diff --git a/src/os/inc/osInc.h b/src/os/inc/osInc.h
new file mode 100644
index 0000000000000000000000000000000000000000..3776501139b816e458297baad12fe597ee13fe16
--- /dev/null
+++ b/src/os/inc/osInc.h
@@ -0,0 +1,118 @@
+/*
+ * 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 <assert.h>
+#include <ctype.h>
+#include <errno.h>
+#include <float.h>
+#include <inttypes.h>
+#include <locale.h>
+#include <math.h>
+#include <pthread.h>
+#include <semaphore.h>
+#include <signal.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#if defined(_TD_LINUX_64) || defined(_TD_LINUX_32) || defined(_TD_MIPS_64)  || defined(_TD_ARM_32) || defined(_TD_ARM_64)  || defined(_TD_DARWIN_64)
+  #include <arpa/inet.h>
+  #include <dirent.h>
+  #include <fcntl.h>
+  #include <inttypes.h>
+  #include <libgen.h>
+  #include <limits.h>
+  #include <netdb.h>
+  #include <netinet/in.h>
+  #include <netinet/ip.h>
+  #include <netinet/tcp.h>
+  #include <netinet/udp.h>
+  #include <pwd.h>
+  #include <regex.h>
+  #include <stddef.h>
+  #include <strings.h>
+  #include <sys/file.h>
+  #include <sys/ioctl.h>
+  #include <sys/mman.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 <sys/utsname.h>
+  #include <syslog.h>
+  #include <termios.h>
+  #include <unistd.h>
+  #include <wchar.h>
+  #include <wordexp.h>
+  #include <wctype.h>
+
+  #if defined(TD_DARWIN_64)
+    #include <dispatch/dispatch.h>
+    #include "osEok.h"
+  #else
+    #include <argp.h> 
+    #include <endian.h>
+    #include <linux/sysctl.h>
+    #include <poll.h>
+    #include <sys/epoll.h>
+    #include <sys/eventfd.h>
+    #include <sys/resource.h>
+    #include <sys/sendfile.h>
+
+    #if !(defined(_ALPINE))
+      #include <error.h>
+    #endif
+  #endif
+#endif
+
+#if defined(_TD_WINDOWS_64) || defined(_TD_WINDOWS_32)
+  #include <intrin.h>
+  #include <io.h>
+  #include "winsock2.h"
+  #include <WS2tcpip.h>
+  #include <winbase.h>
+  #include <Winsock2.h>
+  #include <time.h>
+  #include <conio.h>
+  #include "msvcProcess.h"
+  #include "msvcDirect.h"
+  #include "msvcFcntl.h"
+  #include "msvcLibgen.h"
+  #include "msvcStdio.h"
+  #include "msvcUnistd.h"
+  #include "msvcLibgen.h"
+  #include "sys/msvcStat.h"
+  #include "sys/msvcTypes.h"
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
diff --git a/src/os/inc/osLinux32.h b/src/os/inc/osLinux32.h
deleted file mode 100644
index 6d9a01a9a899c60e9dcaa0b9691ae724548bb9a8..0000000000000000000000000000000000000000
--- a/src/os/inc/osLinux32.h
+++ /dev/null
@@ -1,86 +0,0 @@
-/*
- * 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_LINUX32_H
-#define TDENGINE_OS_LINUX32_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 <math.h>
-#include <poll.h>
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/src/os/inc/osLinux64.h b/src/os/inc/osLinux64.h
deleted file mode 100644
index 0dfc819da339bfba77b5778aa27a8b60c48ca447..0000000000000000000000000000000000000000
--- a/src/os/inc/osLinux64.h
+++ /dev/null
@@ -1,89 +0,0 @@
-/*
- * 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 <poll.h>
-#ifndef _ALPINE
-#include <error.h>
-#endif
-#include <linux/sysctl.h>
-#include <math.h>
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/src/os/inc/osMips64.h b/src/os/inc/osMips64.h
deleted file mode 100644
index ed7b08a31116d20a8eaaaacfa3a9a64ea75dbcee..0000000000000000000000000000000000000000
--- a/src/os/inc/osMips64.h
+++ /dev/null
@@ -1,87 +0,0 @@
-/*
- * 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_MIPS64_H
-#define TDENGINE_OS_MIPS64_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>
-#include <math.h>
-#include <poll.h>
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/src/os/inc/osWindows.h b/src/os/inc/osWindows.h
deleted file mode 100644
index 5a29471034ccf7c6b1548cfb9ebfba7481b60b7f..0000000000000000000000000000000000000000
--- a/src/os/inc/osWindows.h
+++ /dev/null
@@ -1,128 +0,0 @@
-/*
-* 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_WINDOWS_H
-#define TDENGINE_OS_WINDOWS_H
-
-#include <assert.h>
-#include <ctype.h>
-#include <errno.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 "winsock2.h"
-#include <WS2tcpip.h>
-#include <winbase.h>
-#include <Winsock2.h>
-#include <time.h>
-#include <inttypes.h>
-#include <conio.h>
-#include <math.h>
-#include "msvcProcess.h"
-#include "msvcDirect.h"
-#include "msvcFcntl.h"
-#include "msvcLibgen.h"
-#include "msvcStdio.h"
-#include "msvcUnistd.h"
-#include "msvcLibgen.h"
-#include "sys/msvcStat.h"
-#include "sys/msvcTypes.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-char *stpcpy (char *dest, const char *src);
-char *stpncpy (char *dest, const char *src, size_t n);
-
-// specific
-typedef int (*__compar_fn_t)(const void *, const void *);
-#define ssize_t int
-#define bzero(ptr, size) memset((ptr), 0, (size))
-#define strcasecmp  _stricmp
-#define strncasecmp _strnicmp
-#define wcsncasecmp _wcsnicmp
-#define strtok_r strtok_s
-#define snprintf _snprintf
-#define in_addr_t unsigned long
-#define socklen_t int
-
-struct tm *localtime_r(const time_t *timep, struct tm *result);
-char *     strptime(const char *buf, const char *fmt, struct tm *tm);
-char *     strsep(char **stringp, const char *delim);
-char *     getpass(const char *prefix);
-int        flock(int fd, int option);
-char *     strndup(const char *s, size_t n);
-int        gettimeofday(struct timeval *ptv, void *pTimeZone);
-
-// for send function in tsocket.c
-#define MSG_NOSIGNAL             0
-#define SO_NO_CHECK              0x1234
-#define SOL_TCP                  0x1234
-
-#ifndef TCP_KEEPCNT
-  #define TCP_KEEPCNT              0x1234
-#endif
-
-#ifndef TCP_KEEPIDLE
-  #define TCP_KEEPIDLE             0x1234
-#endif
-
-#ifndef TCP_KEEPINTVL
-  #define TCP_KEEPINTVL            0x1234
-#endif
-
-#define SHUT_RDWR                SD_BOTH
-#define SHUT_RD                  SD_RECEIVE
-#define SHUT_WR                  SD_SEND
-
-#define LOCK_EX 1
-#define LOCK_NB 2
-#define LOCK_UN 3
-
-#ifndef PATH_MAX
-  #define PATH_MAX 256
-#endif
-
-typedef struct {
-  int    we_wordc;
-  char  *we_wordv[1];
-  int    we_offs;
-  char   wordPos[1025];
-} wordexp_t;
-int  wordexp(char *words, wordexp_t *pwordexp, int flags);
-void wordfree(wordexp_t *pwordexp);
-
-#define openlog(a, b, c)
-#define closelog()
-#define LOG_ERR 0
-#define LOG_INFO 1
-void syslog(int unused, const char *format, ...);
-
-#ifdef __cplusplus
-}
-#endif
-#endif