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Don't lock before check for termination

Browse source 
Restore old locking scheme changed with
commit 1e92df6b20.

This seems to prevent a very rare crash that occurs
once every 5-10K games.

With this patch we have no crashes after 33K games.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2011-09-14 06:16:46 +01:00
parent 35018fa307
commit be9aba2fa0
1 changed files with 3 additions and 4 deletions
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7
src/search.cpp
View file

@ -2158,17 +2158,16 @@ void Thread::idle_loop(SplitPoint* sp) {
{
assert((!sp && threadID) || Threads.use_sleeping_threads());
// Grab the lock to avoid races with Thread::wake_up()
lock_grab(&sleepLock);
// Slave thread should exit as soon as do_terminate flag raises
if (do_terminate)
{
assert(!sp);
lock_release(&sleepLock);
return;
}
// Grab the lock to avoid races with Thread::wake_up()
lock_grab(&sleepLock);
// If we are master and all slaves have finished don't go to sleep
if (sp && all_slaves_finished(sp))
{