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This commit is contained in:
Shengliang Guan 2022-04-01 11:57:35 +08:00
parent ea8a336269
commit 8eb99ef6d1
3 changed files with 46 additions and 15 deletions
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4
include/os/osProc.h
View File

@ -21,9 +21,11 @@ extern "C" {
#endif
int32_t taosNewProc(char **args);
void taosWaitProc(int32_t pid);
void taosKillProc(int32_t pid);
bool taosProcExist(int32_t pid);
void taosSetProcName(int32_t argc, char **argv, const char *name);
void taosSetProcPath(int32_t argc, char **argv);
bool taosProcExists(int32_t pid);
#ifdef __cplusplus
}

40
source/dnode/mgmt/main/src/dndExec.c
View File

@ -255,17 +255,39 @@ static int32_t dndRunInParentProcess(SDnode *pDnode) {
while (1) {
if (pDnode->event == DND_EVENT_STOP) {
dInfo("dnode is about to stop");
for (ENodeType n = DNODE + 1; n < NODE_MAX; ++n) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
if (!pWrapper->required) continue;
if (pDnode->ntype == NODE_MAX) continue;
if (pWrapper->procId > 0 && taosProcExist(pWrapper->procId)) {
dInfo("node:%s, send kill signal to the child process:%d", pWrapper->name, pWrapper->procId);
taosKillProc(pWrapper->procId);
}
}
for (ENodeType n = DNODE + 1; n < NODE_MAX; ++n) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
if (!pWrapper->required) continue;
if (pDnode->ntype == NODE_MAX) continue;
if (pWrapper->procId > 0 && taosProcExist(pWrapper->procId)) {
dInfo("node:%s, wait for child process:%d to stop", pWrapper->name, pWrapper->procId);
taosWaitProc(pWrapper->procId);
dInfo("node:%s, child process:%d is stopped", pWrapper->name, pWrapper->procId);
}
}
break;
}
} else {
for (ENodeType n = DNODE + 1; n < NODE_MAX; ++n) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
if (!pWrapper->required) continue;
if (pDnode->ntype == NODE_MAX) continue;
for (ENodeType n = DNODE + 1; n < NODE_MAX; ++n) {
SMgmtWrapper *pWrapper = &pDnode->wrappers[n];
if (!pWrapper->required) continue;
if (pDnode->ntype == NODE_MAX) continue;
if (pWrapper->procId <= 0 || !taosProcExists(pWrapper->procId)) {
dInfo("node:%s, process:%d is killed and needs to be restarted", pWrapper->name, pWrapper->procId);
dndNewProc(pWrapper, n);
if (pWrapper->procId <= 0 || !taosProcExist(pWrapper->procId)) {
dInfo("node:%s, process:%d is killed and needs to be restarted", pWrapper->name, pWrapper->procId);
dndNewProc(pWrapper, n);
}
}
}

17
source/os/src/osProc.c
View File

@ -32,6 +32,18 @@ int32_t taosNewProc(char **args) {
}
}
void taosWaitProc(int32_t pid) {
int32_t status = 0;
waitpid(pid, &status, 0);
}
void taosKillProc(int32_t pid) { kill(pid, SIGINT); }
bool taosProcExist(int32_t pid) {
int32_t p = getpgid(pid);
return p >= 0;
}
// the length of the new name must be less than the original name to take effect
void taosSetProcName(int32_t argc, char **argv, const char *name) {
prctl(PR_SET_NAME, name);
@ -48,8 +60,3 @@ void taosSetProcName(int32_t argc, char **argv, const char *name) {
}
void taosSetProcPath(int32_t argc, char **argv) { tsProcPath = argv[0]; }
bool taosProcExists(int32_t pid) {
int32_t p = getpgid(pid);
return p >= 0;
}