pqsignal.c File Reference

#include "c.h"
#include <signal.h>
#include "libpq/pqsignal.h"

Include dependency graph for pqsignal.c:

Go to the source code of this file.

Functions
pqsigfunc	pqsignal (int signo, pqsigfunc func)

Function Documentation

pqsignal()

pqsigfunc pqsignal	(	int	signo,
		pqsigfunc	func
	)

Definition at line 42 of file pqsignal.c.

{
#if !(defined(WIN32) && defined(FRONTEND))
    struct sigaction act,
                oact;
 
    act.sa_handler = func;
    sigemptyset(&act.sa_mask);
    act.sa_flags = SA_RESTART;
#ifdef SA_NOCLDSTOP
    if (signo == SIGCHLD)
        act.sa_flags |= SA_NOCLDSTOP;
#endif
    if (sigaction(signo, &act, &oact) < 0)
        return SIG_ERR;
    return oact.sa_handler;
#else
    /* Forward to Windows native signal system. */
    return signal(signo, func);
#endif
}

References SIG_ERR, SIGALRM, and SIGCHLD.

Referenced by ApplyLauncherMain(), ApplyWorkerMain(), autoprewarm_database_main(), autoprewarm_main(), AutoVacLauncherMain(), AutoVacWorkerMain(), BackendInitialize(), BackgroundWriterMain(), bootstrap_signals(), CheckpointerMain(), disable_sigpipe_trap(), do_start(), InitializeLatchSupport(), InitializeTimeouts(), InitPostmasterChild(), main(), make_temp_sockdir(), OpenPipeStream(), ParallelApplyWorkerMain(), ParallelBackupStart(), ParallelWorkerMain(), pg_crc32c_armv8_available(), PgArchiverMain(), plperl_init_interp(), PostgresMain(), PostmasterDeathSignalInit(), PostmasterMain(), PQprint(), restore_sigpipe_trap(), setalarm(), setup_cancel_handler(), setup_signals(), ShutdownLatchSupport(), signal_remove_temp(), sigTermHandler(), StartBackgroundWorker(), StartupProcessMain(), SysLoggerMain(), test_shm_mq_main(), trap_sigint_during_startup(), trapsig(), WalReceiverMain(), WalSndSignals(), and WalWriterMain().