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41 lines
1.0 KiB
C
41 lines
1.0 KiB
C
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/*-------------------------------------------------------------------------
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*
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* pqsignal.c--
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* reliable BSD-style signal(2) routine stolen from RWW who stole it
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* from Stevens...
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*
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* Copyright (c) 1994, Regents of the University of California
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*
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*
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* IDENTIFICATION
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* $Header: /cvsroot/pgsql/src/backend/libpq/pqsignal.c,v 1.1.1.1 1996/07/09 06:21:31 scrappy Exp $
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*
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* NOTES
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* This shouldn't be in libpq, but the monitor and some other
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* things need it...
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*
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*-------------------------------------------------------------------------
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*/
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#include "libpq/pqsignal.h"
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pqsigfunc
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pqsignal(int signo, pqsigfunc func)
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{
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#if defined(USE_POSIX_SIGNALS)
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struct sigaction act, oact;
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act.sa_handler = func;
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sigemptyset(&act.sa_mask);
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act.sa_flags = 0;
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if (signo != SIGALRM) {
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act.sa_flags |= SA_RESTART;
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}
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if (sigaction(signo, &act, &oact) < 0)
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return(SIG_ERR);
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return(oact.sa_handler);
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#else /* !USE_POSIX_SIGNALS */
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Assert(0);
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return 0;
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#endif /* !USE_POSIX_SIGNALS */
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}
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