pqsignal.c File Reference

#include "c.h"
#include <signal.h>

Include dependency graph for pqsignal.c:

Go to the source code of this file.

Functions
pqsigfunc	pqsignal (int signo, pqsigfunc func)
pqsigfunc	pqsignal_no_restart (int signo, pqsigfunc func)

Function Documentation

pqsigfunc pqsignal	(	int	signo,
		pqsigfunc	func
	)

Definition at line 40 of file pqsignal.c.

References pg_signal_array, SIG_ERR, and SIGCHLD.

{
#ifndef WIN32
    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                           /* WIN32 */
    return signal(signo, func);
#endif
}

pqsigfunc pqsignal_no_restart	(	int	signo,
		pqsigfunc	func
	)

Definition at line 71 of file pqsignal.c.

References SIG_ERR, and SIGCHLD.

Referenced by PostmasterMain().

{
    struct sigaction act,
                oact;

    act.sa_handler = func;
    sigemptyset(&act.sa_mask);
    act.sa_flags = 0;
#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;
}