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| author | Mattias Andrée <m@maandree.se> | 2025-03-21 23:46:04 +0100 |
|---|---|---|
| committer | Mattias Andrée <m@maandree.se> | 2025-03-21 23:46:04 +0100 |
| commit | a091370e612b79452ac882e299d0e85154a64b59 (patch) | |
| tree | e3af7375e90955609424ebe19442ddb3d53d6e09 /src/signals.c | |
| parent | Remove dependency on libsimple since it's not portable (diff) | |
| download | redshift-ng-a091370e612b79452ac882e299d0e85154a64b59.tar.gz redshift-ng-a091370e612b79452ac882e299d0e85154a64b59.tar.bz2 redshift-ng-a091370e612b79452ac882e299d0e85154a64b59.tar.xz | |
misc stuff
Signed-off-by: Mattias Andrée <m@maandree.se>
Diffstat (limited to 'src/signals.c')
| -rw-r--r-- | src/signals.c | 51 |
1 files changed, 47 insertions, 4 deletions
diff --git a/src/signals.c b/src/signals.c index 3487d23..390d684 100644 --- a/src/signals.c +++ b/src/signals.c @@ -25,8 +25,8 @@ volatile sig_atomic_t disable = 0; /** - * Signal handlar for exit signals (SIGINT, SIGTERM, SIGQUIT) - * + * Signal handler for exit signals (SIGINT, SIGTERM, SIGQUIT) + * * @param signo The received signal */ static void @@ -41,8 +41,8 @@ sigexit(int signo) /** - * Signal handlar for disable signal (SIGUSR1) - * + * Signal handler for disable signal (SIGUSR1) + * * @param signo The received signal */ #ifndef WINDOWS @@ -55,6 +55,24 @@ sigdisable(int signo) #endif +/** + * Signal handler for forceful exiting; installed by + * `install_forceful_exit_signal_handlers` + * + * @param signo The received signal + */ +#ifndef WINDOWS +static void +sigalrm(int signo) +{ + if (exiting || signo == SIGALRM) + exit(0); + exiting = 1; + alarm(1U); +} +#endif + + void install_signal_handlers(void) { @@ -90,3 +108,28 @@ install_signal_handlers(void) eprintf("sigaction SIGCHLD &{.sa_handler=SIG_IGN, .sa_mask={}, .sa_flags=0} NULL:"); #endif } + + +#ifndef WINDOWS +void +install_forceful_exit_signal_handlers(void) +{ + struct sigaction sigact; + sigset_t sigset; + + exiting = 0; + memset(&sigact, 0, sizeof(sigact)); + sigemptyset(&sigset); + sigact.sa_mask = sigset; + sigact.sa_flags = 0; + sigact.sa_handler = &sigalrm; + if (sigaction(SIGINT, &sigact, NULL)) + eprintf("sigaction SIGINT &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=0} NULL:"); + if (sigaction(SIGTERM, &sigact, NULL)) + eprintf("sigaction SIGTERM &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=0} NULL:"); + if (sigaction(SIGQUIT, &sigact, NULL)) + eprintf("sigaction SIGQUIT &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=0} NULL:"); + if (sigaction(SIGALRM, &sigact, NULL)) + eprintf("sigaction SIGALRM &{.sa_handler=<function pointer>, .sa_mask={}, .sa_flags=0} NULL:"); +} +#endif |