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18c170a08e
This should help to identify what happened when studying the postmaster log after-the-fact. While here, clean up some old comments in the same function. Discussion: https://postgr.es/m/1568983.1601845687@sss.pgh.pa.us
71 lines
1.9 KiB
C
71 lines
1.9 KiB
C
/*-------------------------------------------------------------------------
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*
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* assert.c
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* Assert support code.
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*
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* Portions Copyright (c) 1996-2020, PostgreSQL Global Development Group
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* Portions 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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* src/backend/utils/error/assert.c
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*
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*-------------------------------------------------------------------------
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*/
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#include "postgres.h"
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#include <unistd.h>
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#ifdef HAVE_EXECINFO_H
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#include <execinfo.h>
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#endif
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/*
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* ExceptionalCondition - Handles the failure of an Assert()
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*
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* We intentionally do not go through elog() here, on the grounds of
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* wanting to minimize the amount of infrastructure that has to be
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* working to report an assertion failure.
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*/
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void
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ExceptionalCondition(const char *conditionName,
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const char *errorType,
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const char *fileName,
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int lineNumber)
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{
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/* Report the failure on stderr (or local equivalent) */
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if (!PointerIsValid(conditionName)
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|| !PointerIsValid(fileName)
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|| !PointerIsValid(errorType))
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write_stderr("TRAP: ExceptionalCondition: bad arguments in PID %d\n",
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(int) getpid());
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else
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write_stderr("TRAP: %s(\"%s\", File: \"%s\", Line: %d, PID: %d)\n",
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errorType, conditionName,
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fileName, lineNumber, (int) getpid());
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/* Usually this shouldn't be needed, but make sure the msg went out */
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fflush(stderr);
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/* If we have support for it, dump a simple backtrace */
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#ifdef HAVE_BACKTRACE_SYMBOLS
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{
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void *buf[100];
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int nframes;
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nframes = backtrace(buf, lengthof(buf));
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backtrace_symbols_fd(buf, nframes, fileno(stderr));
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}
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#endif
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/*
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* If configured to do so, sleep indefinitely to allow user to attach a
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* debugger. It would be nice to use pg_usleep() here, but that can sleep
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* at most 2G usec or ~33 minutes, which seems too short.
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*/
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#ifdef SLEEP_ON_ASSERT
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sleep(1000000);
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#endif
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abort();
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}
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