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Save RDB on SIGTERM (see issue #471)

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This commit is contained in:
Pieter Noordhuis 2011-03-06 17:49:22 +01:00
parent 048c0f0f37
commit 2d2c17b075
2 changed files with 22 additions and 26 deletions
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46
src/redis.c
View File

@ -837,7 +837,7 @@ void initServer() {
signal(SIGHUP, SIG_IGN);
signal(SIGPIPE, SIG_IGN);
setupSigSegvAction();
setupSignalHandlers();
if (server.syslog_enabled) {
openlog(server.syslog_ident, LOG_PID | LOG_NDELAY | LOG_NOWAIT,
@ -1574,10 +1574,8 @@ int main(int argc, char **argv) {
return 0;
}
/* ============================= Backtrace support ========================= */
#ifdef HAVE_BACKTRACE
void *getMcontextEip(ucontext_t *uc) {
static void *getMcontextEip(ucontext_t *uc) {
#if defined(__FreeBSD__)
return (void*) uc->uc_mcontext.mc_eip;
#elif defined(__dietlibc__)
@ -1605,7 +1603,7 @@ void *getMcontextEip(ucontext_t *uc) {
#endif
}
void segvHandler(int sig, siginfo_t *info, void *secret) {
static void sigsegvHandler(int sig, siginfo_t *info, void *secret) {
void *trace[100];
char **messages = NULL;
int i, trace_size = 0;
@ -1644,37 +1642,35 @@ void segvHandler(int sig, siginfo_t *info, void *secret) {
sigaction (sig, &act, NULL);
kill(getpid(),sig);
}
#endif /* HAVE_BACKTRACE */
void sigtermHandler(int sig) {
static void sigtermHandler(int sig) {
REDIS_NOTUSED(sig);
redisLog(REDIS_WARNING,"SIGTERM received, scheduling shutting down...");
redisLog(REDIS_WARNING,"Received SIGTERM, scheduling shutdown...");
server.shutdown_asap = 1;
}
void setupSigSegvAction(void) {
void setupSignalHandlers(void) {
struct sigaction act;
sigemptyset (&act.sa_mask);
/* When the SA_SIGINFO flag is set in sa_flags then sa_sigaction
* is used. Otherwise, sa_handler is used */
act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND | SA_SIGINFO;
act.sa_sigaction = segvHandler;
sigaction (SIGSEGV, &act, NULL);
sigaction (SIGBUS, &act, NULL);
sigaction (SIGFPE, &act, NULL);
sigaction (SIGILL, &act, NULL);
sigaction (SIGBUS, &act, NULL);
/* When the SA_SIGINFO flag is set in sa_flags then sa_sigaction is used.
* Otherwise, sa_handler is used. */
sigemptyset(&act.sa_mask);
act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND;
act.sa_handler = sigtermHandler;
sigaction (SIGTERM, &act, NULL);
sigaction(SIGTERM, &act, NULL);
#ifdef HAVE_BACKTRACE
sigemptyset(&act.sa_mask);
act.sa_flags = SA_NODEFER | SA_ONSTACK | SA_RESETHAND | SA_SIGINFO;
act.sa_sigaction = sigsegvHandler;
sigaction(SIGSEGV, &act, NULL);
sigaction(SIGBUS, &act, NULL);
sigaction(SIGFPE, &act, NULL);
sigaction(SIGILL, &act, NULL);
#endif
return;
}
#else /* HAVE_BACKTRACE */
void setupSigSegvAction(void) {
}
#endif /* HAVE_BACKTRACE */
/* The End */

2
src/redis.h
View File

@ -777,7 +777,7 @@ zskiplistNode *zslInsert(zskiplist *zsl, double score, robj *obj);
/* Core functions */
void freeMemoryIfNeeded(void);
int processCommand(redisClient *c);
void setupSigSegvAction(void);
void setupSignalHandlers(void);
struct redisCommand *lookupCommand(sds name);
struct redisCommand *lookupCommandByCString(char *s);
void call(redisClient *c, struct redisCommand *cmd);