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remove a potential race condition

This commit is contained in:
Jeff Tao 2020-04-12 18:10:06 +08:00
parent a5dabf7e99
commit 8c22eed1bb
2 changed files with 14 additions and 14 deletions
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26
src/rpc/src/rpcClient.c
View File

@ -188,10 +188,19 @@ static void taosCleanUpTcpFdObj(STcpFd *pFdObj) {
if (pFdObj == NULL) return;
if (pFdObj->signature != pFdObj) return;
pFdObj->signature = NULL;
pTcp = pFdObj->pTcp;
if (pTcp == NULL) {
tError("double free TcpFdObj!!!!");
return;
if (pFdObj->thandle) {
recvInfo.msg = NULL;
recvInfo.msgLen = 0;
recvInfo.ip = 0;
recvInfo.port = 0;
recvInfo.shandle = pTcp->shandle;
recvInfo.thandle = pFdObj->thandle;;
recvInfo.chandle = NULL;
recvInfo.connType = RPC_CONN_TCP;
(*(pTcp->processData))(&recvInfo);
}
epoll_ctl(pTcp->pollFd, EPOLL_CTL_DEL, pFdObj->fd, NULL);
@ -216,19 +225,8 @@ static void taosCleanUpTcpFdObj(STcpFd *pFdObj) {
pthread_mutex_unlock(&pTcp->mutex);
recvInfo.msg = NULL;
recvInfo.msgLen = 0;
recvInfo.ip = 0;
recvInfo.port = 0;
recvInfo.shandle = pTcp->shandle;
recvInfo.thandle = pFdObj->thandle;;
recvInfo.chandle = NULL;
recvInfo.connType = RPC_CONN_TCP;
if (pFdObj->thandle) (*(pTcp->processData))(&recvInfo);
tTrace("%s TCP is cleaned up, FD:%p numOfFds:%d", pTcp->label, pFdObj, pTcp->numOfFds);
memset(pFdObj, 0, sizeof(STcpFd));
tfree(pFdObj);
}

2
src/rpc/test/rclient.c
View File

@ -204,6 +204,8 @@ int main(int argc, char *argv[]) {
tPrint("it takes %.3f mseconds to send %d requests to server", usedTime, numOfReqs*appThreads);
tPrint("Performance: %.3f requests per second, msgSize:%d bytes", 1000.0*numOfReqs*appThreads/usedTime, msgSize);
getchar();
taosCloseLogger();
return 0;