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reduce mutex lock usage time

This commit is contained in:
xiao-77 2024-09-11 13:47:43 +08:00
parent ca2e761a86
commit 96c59cc746
2 changed files with 20 additions and 14 deletions
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4
include/util/tutil.h
View File

@ -176,11 +176,11 @@ static FORCE_INLINE int32_t taosGetTbHashVal(const char *tbname, int32_t tblen,
} \
} while (0)
#define TAOS_CHECK_RETURN_WITH_MUTEX(CMD, MUTEX) \
#define TAOS_CHECK_RETURN_WITH_FREE(CMD, PTR) \
do { \
int32_t __c = (CMD); \
if (__c != TSDB_CODE_SUCCESS) { \
taosThreadMutexUnlock(MUTEX); \
taosMemoryFree(PTR); \
TAOS_RETURN(__c); \
} \
} while (0)

20
source/libs/wal/src/walRead.c
View File

@ -202,22 +202,28 @@ static int32_t walReadSeekVerImpl(SWalReader *pReader, int64_t ver) {
SWalFileInfo tmpInfo;
tmpInfo.firstVer = ver;
taosThreadMutexLock(&pWal->mutex);
SWalFileInfo *pRet = taosArraySearch(pWal->fileInfoSet, &tmpInfo, compareWalFileInfo, TD_LE);
if (pRet == NULL) {
SWalFileInfo *gloablPRet = taosArraySearch(pWal->fileInfoSet, &tmpInfo, compareWalFileInfo, TD_LE);
if (gloablPRet == NULL) {
wError("failed to find WAL log file with ver:%" PRId64, ver);
taosThreadMutexUnlock(&pWal->mutex);
TAOS_RETURN(TSDB_CODE_WAL_INVALID_VER);
}
SWalFileInfo *pRet = taosMemoryMalloc(sizeof(SWalFileInfo));
if (pRet == NULL) {
wError("failed to allocate memory for localRet");
taosThreadMutexUnlock(&pWal->mutex);
TAOS_RETURN(TSDB_CODE_OUT_OF_MEMORY);
}
TAOS_MEMCPY(pRet, gloablPRet, sizeof(SWalFileInfo));
taosThreadMutexUnlock(&pWal->mutex);
if (pReader->curFileFirstVer != pRet->firstVer) {
// error code was set inner
TAOS_CHECK_RETURN_WITH_MUTEX(walReadChangeFile(pReader, pRet->firstVer), &pWal->mutex);
TAOS_CHECK_RETURN_WITH_FREE(walReadChangeFile(pReader, pRet->firstVer), pRet);
}
// error code was set inner
TAOS_CHECK_RETURN_WITH_MUTEX(walReadSeekFilePos(pReader, pRet->firstVer, ver), &pWal->mutex);
taosThreadMutexUnlock(&pWal->mutex);
TAOS_CHECK_RETURN_WITH_FREE(walReadSeekFilePos(pReader, pRet->firstVer, ver), pRet);
taosMemoryFree(pRet);
wDebug("vgId:%d, wal version reset from %" PRId64 " to %" PRId64, pReader->pWal->cfg.vgId, pReader->curVersion, ver);
pReader->curVersion = ver;