Thread Threads[THREAD_MAX];
Lock MPLock;
Lock IOLock;
- bool AllThreadsShouldExit = false;
+ bool AllThreadsShouldExit, AllThreadsShouldSleep;
SplitPoint SplitPointStack[THREAD_MAX][ACTIVE_SPLIT_POINTS_MAX];
- bool Idle = true;
#if !defined(_MSC_VER)
pthread_cond_t WaitCond;
int maxNodes, int maxTime, Move searchMoves[]) {
// Initialize global search variables
- Idle = StopOnPonderhit = AbortSearch = Quit = false;
+ AllThreadsShouldSleep = StopOnPonderhit = AbortSearch = Quit = false;
AspirationFailLow = false;
NodesSincePoll = 0;
SearchStartTime = get_system_time();
if (UseLogFile)
LogFile.close();
- Idle = true;
+ AllThreadsShouldSleep = true;
return !Quit;
}
SitIdleEvent[i] = CreateEvent(0, FALSE, FALSE, 0);
#endif
+ // Will be set just before program exits to properly end the threads
+ AllThreadsShouldExit = false;
+
+ // Threads will be put to sleep as soon as created
+ AllThreadsShouldSleep = true;
+
// All threads except the main thread should be initialized to idle state
for (i = 1; i < THREAD_MAX; i++)
{
void stop_threads() {
ActiveThreads = THREAD_MAX; // HACK
- Idle = false; // HACK
+ AllThreadsShouldSleep = false; // HACK
wake_sleeping_threads();
AllThreadsShouldExit = true;
for (int i = 1; i < THREAD_MAX; i++)
Threads[threadID].running = true;
- while (true)
+ while (!AllThreadsShouldExit || threadID == 0)
{
- if (AllThreadsShouldExit && threadID != 0)
- break;
-
// If we are not thinking, wait for a condition to be signaled
// instead of wasting CPU time polling for work.
- while (threadID != 0 && (Idle || threadID >= ActiveThreads))
+ while ( threadID != 0
+ && !AllThreadsShouldExit
+ && (AllThreadsShouldSleep || threadID >= ActiveThreads))
{
+ Threads[threadID].sleeping = true;
+
#if !defined(_MSC_VER)
pthread_mutex_lock(&WaitLock);
if (Idle || threadID >= ActiveThreads)
#else
WaitForSingleObject(SitIdleEvent[threadID], INFINITE);
#endif
+ Threads[threadID].sleeping = false;
}
// If this thread has been assigned work, launch a search