assert.c File Reference

#include "postgres.h"
#include <unistd.h>

Include dependency graph for assert.c:

Go to the source code of this file.

Functions
void	ExceptionalCondition (const char *conditionName, const char *fileName, int lineNumber)

Function Documentation

ExceptionalCondition()

void ExceptionalCondition	(	const char *	conditionName,
		const char *	fileName,
		int	lineNumber
	)

Definition at line 30 of file assert.c.

{
    /* Report the failure on stderr (or local equivalent) */
    if (!PointerIsValid(conditionName)
        || !PointerIsValid(fileName))
        write_stderr("TRAP: ExceptionalCondition: bad arguments in PID %d\n",
                     (int) getpid());
    else
        write_stderr("TRAP: failed Assert(\"%s\"), File: \"%s\", Line: %d, PID: %d\n",
                     conditionName, fileName, lineNumber, (int) getpid());
 
    /* Usually this shouldn't be needed, but make sure the msg went out */
    fflush(stderr);
 
    /* If we have support for it, dump a simple backtrace */
#ifdef HAVE_BACKTRACE_SYMBOLS
    {
        void       *buf[100];
        int         nframes;
 
        nframes = backtrace(buf, lengthof(buf));
        backtrace_symbols_fd(buf, nframes, fileno(stderr));
    }
#endif
 
    /*
     * If configured to do so, sleep indefinitely to allow user to attach a
     * debugger.  It would be nice to use pg_usleep() here, but that can sleep
     * at most 2G usec or ~33 minutes, which seems too short.
     */
#ifdef SLEEP_ON_ASSERT
    sleep(1000000);
#endif
 
    abort();
}

References buf, fflush(), lengthof, PointerIsValid, and write_stderr.

Referenced by pg_re_throw().