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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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26
doc/src/sgml/config.sgml
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@@ -9489,6 +9489,32 @@ dynamic_library_path = 'C:\tools\postgresql;H:\my_project\lib;$libdir'
</listitem>
</varlistentry>
<varlistentry id="guc-backtrace-functions" xreflabel="backtrace_functions">
<term><varname>backtrace_functions</varname> (<type>string</type>)
<indexterm>
<primary><varname>backtrace_functions</varname> configuration parameter</primary>
</indexterm>
</term>
<listitem>
<para>
This parameter contains a comma-separated list of C function names.
If an error is raised and the name of the internal C function where
the error happens matches a value in the list, then a backtrace is
written to the server log together with the error message. This can
be used to debug specific areas of the source code.
</para>
<para>
Backtrace support is not available on all platforms, and the quality
of the backtraces depends on compilation options.
</para>
<para>
This parameter can only be set by superusers.
</para>
</listitem>
</varlistentry>
<varlistentry id="guc-ignore-system-indexes" xreflabel="ignore_system_indexes">
<term><varname>ignore_system_indexes</varname> (<type>boolean</type>)
<indexterm>