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Add backtrace support for error reporting

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Add some support for automatically showing backtraces in certain error
situations in the server.  Backtraces are shown on assertion failure;
also, a new setting backtrace_functions can be set to a list of C
function names, and all ereport()s and elog()s from the mentioned
functions will have backtraces generated.  Finally, the function
errbacktrace() can be manually added to an ereport() call to generate a
backtrace for that call.

Authors: Peter Eisentraut, Álvaro Herrera
Discussion: https://postgr.es/m//5f48cb47-bf1e-05b6-7aae-3bf2cd01586d@2ndquadrant.com
Discussion: https://postgr.es/m/CAMsr+YGL+yfWE=JvbUbnpWtrRZNey7hJ07+zT4bYJdVp4Szdrg@mail.gmail.com
This commit is contained in:
Alvaro Herrera
2019-11-08 15:44:20 -03:00
parent 3dcffb381c
commit 71a8a4f6e3
9 changed files with 315 additions and 2 deletions
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13
src/backend/utils/error/assert.c
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@@ -18,6 +18,9 @@
#include "postgres.h"
#include <unistd.h>
#ifdef HAVE_EXECINFO_H
#include <execinfo.h>
#endif
/*
* ExceptionalCondition - Handles the failure of an Assert()
@@ -42,6 +45,16 @@ ExceptionalCondition(const char *conditionName,
/* Usually this shouldn't be needed, but make sure the msg went out */
fflush(stderr);
#ifdef HAVE_BACKTRACE_SYMBOLS
{
void *buf[100];
int nframes;
nframes = backtrace(buf, lengthof(buf));
backtrace_symbols_fd(buf, nframes, fileno(stderr));
}
#endif
#ifdef SLEEP_ON_ASSERT
/*