pqsignal.c
上传用户:blenddy
上传日期:2007-01-07
资源大小:6495k
文件大小:1k
- /*-------------------------------------------------------------------------
- *
- * pqsignal.c
- * reliable BSD-style signal(2) routine stolen from RWW who stole it
- * from Stevens...
- *
- * Copyright (c) 1994, Regents of the University of California
- *
- *
- * IDENTIFICATION
- * $Header: /usr/local/cvsroot/pgsql/src/interfaces/libpq/pqsignal.c,v 1.10 1999/02/13 23:22:43 momjian Exp $
- *
- * NOTES
- * This shouldn't be in libpq, but the monitor and some other
- * things need it...
- *
- *-------------------------------------------------------------------------
- */
- #include <stdlib.h>
- #include <signal.h>
- #include "pqsignal.h"
- pqsigfunc
- pqsignal(int signo, pqsigfunc func)
- {
- #if !defined(USE_POSIX_SIGNALS)
- return signal(signo, func);
- #else
- struct sigaction act,
- oact;
- act.sa_handler = func;
- sigemptyset(&act.sa_mask);
- act.sa_flags = 0;
- if (signo != SIGALRM)
- act.sa_flags |= SA_RESTART;
- if (sigaction(signo, &act, &oact) < 0)
- return SIG_ERR;
- return oact.sa_handler;
- #endif /* !USE_POSIX_SIGNALS */
- }