/*-------------------------------------------------------------------------
 *
 * pqsignal.h
 *	  Backend signal(2) support (see also src/port/pqsignal.c)
 *
 * Portions Copyright (c) 1996-2013, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * src/include/libpq/pqsignal.h
 *
 *-------------------------------------------------------------------------
 */
#ifndef PQSIGNAL_H
#define PQSIGNAL_H

#include <signal.h>

#ifdef HAVE_SIGPROCMASK
extern sigset_t UnBlockSig,
			BlockSig,
			StartupBlockSig;

#define PG_SETMASK(mask)	sigprocmask(SIG_SETMASK, mask, NULL)
#else							/* not HAVE_SIGPROCMASK */
extern int	UnBlockSig,
			BlockSig,
			StartupBlockSig;

#ifndef WIN32
#define PG_SETMASK(mask)	sigsetmask(*((int*)(mask)))
#else
#define PG_SETMASK(mask)		pqsigsetmask(*((int*)(mask)))
int			pqsigsetmask(int mask);
#endif

#define sigaddset(set, signum)	(*(set) |= (sigmask(signum)))
#define sigdelset(set, signum)	(*(set) &= ~(sigmask(signum)))
#endif   /* not HAVE_SIGPROCMASK */

extern void pqinitmask(void);

#endif   /* PQSIGNAL_H */
