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Avoid wake up master thread when useless

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Check we are the last slave of the split point
before to wake up the master. This should avoid
spurious wakes up.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba 2012-08-19 13:06:26 +01:00
parent dba1bc354a
commit 2f4a9a140a
1 changed files with 4 additions and 1 deletions
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5
src/search.cpp
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@ -1728,8 +1728,11 @@ void Thread::idle_loop() {
// case we are the last slave of the split point. // case we are the last slave of the split point.
if ( Threads.use_sleeping_threads() if ( Threads.use_sleeping_threads()
&& this != sp->master && this != sp->master
&& !sp->master->is_searching) && !sp->slavesMask)
{
assert(!sp->master->is_searching);
sp->master->wake_up(); sp->master->wake_up();
}
// After releasing the lock we cannot access anymore any SplitPoint // After releasing the lock we cannot access anymore any SplitPoint
// related data in a safe way becuase it could have been released under // related data in a safe way becuase it could have been released under