diff options
| author | Ingo Struewing <ingo.struewing@sun.com> | 2009-09-29 17:38:40 +0200 |
|---|---|---|
| committer | Ingo Struewing <ingo.struewing@sun.com> | 2009-09-29 17:38:40 +0200 |
| commit | 21586dfb084b05ac7d98ee990d64637b4be9222a (patch) | |
| tree | 685de4fd8757394edb5d353f0627eb2390ffc419 /configure.in | |
| parent | 8b9843408d8b1068798228f397cd1a20fa56f504 (diff) | |
| download | mariadb-git-21586dfb084b05ac7d98ee990d64637b4be9222a.tar.gz | |
WL#4259 - Debug Sync Facility
Backport from 6.0 to 5.1.
Only those sync points are included, which are used in debug_sync.test.
The Debug Sync Facility allows to place synchronization points
in the code:
open_tables(...)
DEBUG_SYNC(thd, "after_open_tables");
lock_tables(...)
When activated, a sync point can
- Send a signal and/or
- Wait for a signal
Nomenclature:
- signal: A value of a global variable that persists
until overwritten by a new signal. The global
variable can also be seen as a "signal post"
or "flag mast". Then the signal is what is
attached to the "signal post" or "flag mast".
- send a signal: Assign the value (the signal) to the global
variable ("set a flag") and broadcast a
global condition to wake those waiting for
a signal.
- wait for a signal: Loop over waiting for the global condition until
the global value matches the wait-for signal.
Please find more information in the top comment in debug_sync.cc
or in the worklog entry.
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/configure.in b/configure.in index b974d7076d7..bec902f83c1 100644 --- a/configure.in +++ b/configure.in @@ -1708,6 +1708,23 @@ else CXXFLAGS="$OPTIMIZE_CXXFLAGS $CXXFLAGS" fi +# Debug Sync Facility. NOTE: depends on 'with_debug'. Must be behind it. +AC_MSG_CHECKING(if Debug Sync Facility should be enabled.) +AC_ARG_ENABLE(debug_sync, + AS_HELP_STRING([--enable-debug-sync], + [Build a version with Debug Sync Facility]), + [ enable_debug_sync=$enableval ], + [ enable_debug_sync=$with_debug ]) + +if test "$enable_debug_sync" != "no" +then + AC_DEFINE([ENABLED_DEBUG_SYNC], [1], + [If Debug Sync Facility should be enabled]) + AC_MSG_RESULT([yes]) +else + AC_MSG_RESULT([no]) +fi + # If we should allow error injection tests AC_ARG_WITH(error-inject, AC_HELP_STRING([--with-error-inject],[Enable error injection in MySQL Server]), |