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Shishir Jaiswal 17387bc574 Bug #21467458 - UNINSTALL PLUGIN DAEMON_EXAMPLE CRASHES

MYSQLD.

DESCRIPTION
===========
Crash occurs when daemon_example plugin is uninstalled
immediately after its installed. This can be reproduced
by installing and uninstalling the plugin repeatedly.

ANALYSIS
========
The daemon_example_plugin_deinit() function of the daemon
example plugin calls pthread_cancel() but doesn't wait for
the worker thread to actually complete before deallocating
the data buffer and closing the file that it writes to.
This is causing SEGFAULT!

FIX
===
Added a pthread_join() to wait for the thread to complete
before doing the cleanup work.

Removed a stray 'x' variable from the example code.

NOTE
====
Have made an entry in .opt file as given below:
--plugin-dir=$DAEMONEXAMPLE_DIR

This is done so that the program takes plugin directory as
../<dbg>/plugin/daemon_example/ instead of
../lib/plugin/

2015-09-16 18:58:43 +05:30

AUTHORS

This patch fixes the example engine, the example parser, and the example daemon to compile. AKA You can now test that the interface is actually working :)

2006-11-10 17:21:59 -08:00

ChangeLog

This patch fixes the example engine, the example parser, and the example daemon to compile. AKA You can now test that the interface is actually working :)

2006-11-10 17:21:59 -08:00

CMakeLists.txt

Updated/added copyright headers

2012-02-16 10:48:16 +01:00

daemon_example.cc

Bug #21467458 - UNINSTALL PLUGIN DAEMON_EXAMPLE CRASHES

2015-09-16 18:58:43 +05:30

daemon_example.ini

Cherry-picking WL#5710 from mysql-5.5 to mysql-5.5.16-release.

2011-08-15 18:29:38 +04:00

NEWS

This patch fixes the example engine, the example parser, and the example daemon to compile. AKA You can now test that the interface is actually working :)

2006-11-10 17:21:59 -08:00

README

This patch fixes the example engine, the example parser, and the example daemon to compile. AKA You can now test that the interface is actually working :)

2006-11-10 17:21:59 -08:00

README

Hi!

This is an example of a daemon plugin. These are generic plugins that
only hook ino the startup and shutdown of the database.

Cheers,
  -Brian
    Seattle, WA