postgresql/src/include/utils/elog.h

/*-------------------------------------------------------------------------
 *
 * elog.h
 *	  POSTGRES error logging definitions.
 *
 *
 * Portions Copyright (c) 1996-2000, PostgreSQL, Inc
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $Id: elog.h,v 1.23 2001/01/12 21:54:01 tgl Exp $
 *
 *-------------------------------------------------------------------------
 */
#ifndef ELOG_H
#define ELOG_H

#define NOTICE	0				/* random info - no special action */
#define ERROR	(-1)			/* user error - return to known state */
#define FATAL	1				/* fatal error - abort process */
#define REALLYFATAL 2			/* take down the other backends with me */
#define STOP	REALLYFATAL
#define DEBUG	(-2)			/* debug message */
#define LOG		DEBUG
#define NOIND	(-3)			/* debug message, don't indent as far */

#ifdef ENABLE_SYSLOG
extern int Use_syslog;
#endif

/*
 * If CritSectionCount > 0, signal handlers mustn't do
 * elog(ERROR|FATAL), instead remember what action is
 * required with QueryCancel or ProcDiePending.
 * ProcDiePending will be honored at critical section exit,
 * but QueryCancel is only checked at specified points.
 */
extern volatile uint32 CritSectionCount;	/* duplicates access/xlog.h */
extern volatile bool ProcDiePending;
extern void ForceProcDie(void);	/* in postgres.c */

#define	START_CRIT_SECTION()  (CritSectionCount++)

#define END_CRIT_SECTION() \
	do { \
		Assert(CritSectionCount > 0); \
		CritSectionCount--; \
		if (CritSectionCount == 0 && ProcDiePending) \
			ForceProcDie(); \
	} while(0)

extern bool Log_timestamp;
extern bool Log_pid;

#ifndef __GNUC__
extern void elog(int lev, const char *fmt,...);

#else
/* This extension allows gcc to check the format string for consistency with
   the supplied arguments. */
extern void elog(int lev, const char *fmt,...) __attribute__((format(printf, 2, 3)));

#endif

#ifndef PG_STANDALONE
extern int	DebugFileOpen(void);

#endif

#endif	 /* ELOG_H */