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Use a boolean instead as thread's state

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Now that we have just two mutually exclusive thread's states
we can repleace them by a simple boolean.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2011-08-10 12:12:10 +01:00
parent c386ce0023
commit d156e7a20b
3 changed files with 19 additions and 25 deletions
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src/search.cpp
+6 -6
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@@ -2154,7 +2154,7 @@ void Thread::idle_loop(SplitPoint* sp) {
// instead of wasting CPU time polling for work.
while ( do_sleep
|| do_terminate
|| (Threads.use_sleeping_threads() && state == Thread::AVAILABLE))
|| (Threads.use_sleeping_threads() && !is_searching))
{
assert((!sp && threadID) || Threads.use_sleeping_threads());
@@ -2180,14 +2180,14 @@ void Thread::idle_loop(SplitPoint* sp) {
// particular we need to avoid a deadlock in case a master thread has,
// in the meanwhile, allocated us and sent the wake_up() call before we
// had the chance to grab the lock.
if (do_sleep || state == Thread::AVAILABLE)
if (do_sleep || !is_searching)
cond_wait(&sleepCond, &sleepLock);
lock_release(&sleepLock);
}
// If this thread has been assigned work, launch a search
if (state == Thread::SEARCHING)
if (is_searching)
{
assert(!do_terminate);
@@ -2208,15 +2208,15 @@ void Thread::idle_loop(SplitPoint* sp) {
else
assert(false);
assert(state == Thread::SEARCHING);
assert(is_searching);
state = Thread::AVAILABLE;
is_searching = false;
// Wake up master thread so to allow it to return from the idle loop in
// case we are the last slave of the split point.
if ( Threads.use_sleeping_threads()
&& threadID != tsp->master
&& Threads[tsp->master].state == Thread::AVAILABLE)
&& !Threads[tsp->master].is_searching)
Threads[tsp->master].wake_up();
}