X-Git-Url: https://git.sesse.net/?p=stockfish;a=blobdiff_plain;f=src%2Fthread.cpp;h=2c40ef6f8c14ecc7ccc218a01d06dada354d8874;hp=c7d9d4104e248642170e594813111bef6de789ac;hb=3d937e1e901c59c04cd5d602c05f72892222ded8;hpb=04ff9c2548eb4d8b8a59db23f7212c7a8cdd25aa diff --git a/src/thread.cpp b/src/thread.cpp index c7d9d410..2c40ef6f 100644 --- a/src/thread.cpp +++ b/src/thread.cpp @@ -64,9 +64,9 @@ namespace { extern "C" { void Thread::wake_up() { - lock_grab(&sleepLock); - cond_signal(&sleepCond); - lock_release(&sleepLock); + lock_grab(sleepLock); + cond_signal(sleepCond); + lock_release(sleepLock); } @@ -153,17 +153,17 @@ void ThreadsManager::set_size(int cnt) { void ThreadsManager::init() { // Initialize sleep condition and lock used by thread manager - cond_init(&sleepCond); - lock_init(&threadsLock); + cond_init(sleepCond); + lock_init(threadsLock); // Initialize thread's sleep conditions and split point locks for (int i = 0; i <= MAX_THREADS; i++) { - lock_init(&threads[i].sleepLock); - cond_init(&threads[i].sleepCond); + lock_init(threads[i].sleepLock); + cond_init(threads[i].sleepCond); for (int j = 0; j < MAX_ACTIVE_SPLIT_POINTS; j++) - lock_init(&(threads[i].splitPoints[j].lock)); + lock_init(threads[i].splitPoints[j].lock); } // Allocate main thread tables to call evaluate() also when not searching @@ -177,12 +177,7 @@ void ThreadsManager::init() { threads[i].do_sleep = (i != 0); // Avoid a race with start_thinking() threads[i].threadID = i; -#if defined(_MSC_VER) - threads[i].handle = CreateThread(NULL, 0, start_routine, &threads[i], 0, NULL); - bool ok = (threads[i].handle != NULL); -#else - bool ok = !pthread_create(&threads[i].handle, NULL, start_routine, &threads[i]); -#endif + bool ok = thread_create(threads[i].handle, start_routine, threads[i]); if (!ok) { @@ -202,24 +197,18 @@ void ThreadsManager::exit() { threads[i].do_terminate = true; // Search must be already finished threads[i].wake_up(); - // Wait for thread termination -#if defined(_MSC_VER) - WaitForSingleObject(threads[i].handle, INFINITE); - CloseHandle(threads[i].handle); -#else - pthread_join(threads[i].handle, NULL); -#endif + thread_join(threads[i].handle); // Wait for thread termination // Now we can safely destroy associated locks and wait conditions - lock_destroy(&threads[i].sleepLock); - cond_destroy(&threads[i].sleepCond); + lock_destroy(threads[i].sleepLock); + cond_destroy(threads[i].sleepCond); for (int j = 0; j < MAX_ACTIVE_SPLIT_POINTS; j++) - lock_destroy(&(threads[i].splitPoints[j].lock)); + lock_destroy(threads[i].splitPoints[j].lock); } - lock_destroy(&threadsLock); - cond_destroy(&sleepCond); + lock_destroy(threadsLock); + cond_destroy(sleepCond); } @@ -310,7 +299,7 @@ Value ThreadsManager::split(Position& pos, Stack* ss, Value alpha, Value beta, // Try to allocate available threads and ask them to start searching setting // is_searching flag. This must be done under lock protection to avoid concurrent // allocation of the same slave by another master. - lock_grab(&threadsLock); + lock_grab(threadsLock); for (i = 0; !Fake && i < activeThreads && workersCnt < maxThreadsPerSplitPoint; i++) if (threads[i].is_available_to(master)) @@ -326,7 +315,7 @@ Value ThreadsManager::split(Position& pos, Stack* ss, Value alpha, Value beta, threads[i].wake_up(); } - lock_release(&threadsLock); + lock_release(threadsLock); // We failed to allocate even one slave, return if (!Fake && workersCnt == 1) @@ -349,12 +338,12 @@ Value ThreadsManager::split(Position& pos, Stack* ss, Value alpha, Value beta, // We have returned from the idle loop, which means that all threads are // finished. Note that changing state and decreasing activeSplitPoints is done // under lock protection to avoid a race with Thread::is_available_to(). - lock_grab(&threadsLock); + lock_grab(threadsLock); masterThread.is_searching = true; masterThread.activeSplitPoints--; - lock_release(&threadsLock); + lock_release(threadsLock); masterThread.splitPoint = sp->parent; pos.set_nodes_searched(pos.nodes_searched() + sp->nodes); @@ -375,9 +364,9 @@ void Thread::timer_loop() { while (!do_terminate) { - lock_grab(&sleepLock); - timed_wait(&sleepCond, &sleepLock, maxPly ? maxPly : INT_MAX); - lock_release(&sleepLock); + lock_grab(sleepLock); + timed_wait(sleepCond, sleepLock, maxPly ? maxPly : INT_MAX); + lock_release(sleepLock); check_time(); } } @@ -390,10 +379,10 @@ void ThreadsManager::set_timer(int msec) { Thread& timer = threads[MAX_THREADS]; - lock_grab(&timer.sleepLock); + lock_grab(timer.sleepLock); timer.maxPly = msec; - cond_signal(&timer.sleepCond); // Wake up and restart the timer - lock_release(&timer.sleepLock); + cond_signal(timer.sleepCond); // Wake up and restart the timer + lock_release(timer.sleepLock); } @@ -404,20 +393,20 @@ void Thread::main_loop() { while (true) { - lock_grab(&sleepLock); + lock_grab(sleepLock); do_sleep = true; // Always return to sleep after a search is_searching = false; while (do_sleep && !do_terminate) { - cond_signal(&Threads.sleepCond); // Wake up UI thread if needed - cond_wait(&sleepCond, &sleepLock); + cond_signal(Threads.sleepCond); // Wake up UI thread if needed + cond_wait(sleepCond, sleepLock); } is_searching = true; - lock_release(&sleepLock); + lock_release(sleepLock); if (do_terminate) return; @@ -436,11 +425,11 @@ void ThreadsManager::start_thinking(const Position& pos, const LimitsType& limit const std::set& searchMoves, bool async) { Thread& main = threads[0]; - lock_grab(&main.sleepLock); + lock_grab(main.sleepLock); // Wait main thread has finished before to launch a new search while (!main.do_sleep) - cond_wait(&sleepCond, &main.sleepLock); + cond_wait(sleepCond, main.sleepLock); // Copy input arguments to initialize the search RootPosition.copy(pos, 0); @@ -458,13 +447,13 @@ void ThreadsManager::start_thinking(const Position& pos, const LimitsType& limit Signals.stop = Signals.failedLowAtRoot = false; main.do_sleep = false; - cond_signal(&main.sleepCond); // Wake up main thread and start searching + cond_signal(main.sleepCond); // Wake up main thread and start searching if (!async) while (!main.do_sleep) - cond_wait(&sleepCond, &main.sleepLock); + cond_wait(sleepCond, main.sleepLock); - lock_release(&main.sleepLock); + lock_release(main.sleepLock); } @@ -478,14 +467,14 @@ void ThreadsManager::stop_thinking() { Search::Signals.stop = true; - lock_grab(&main.sleepLock); + lock_grab(main.sleepLock); - cond_signal(&main.sleepCond); // In case is waiting for stop or ponderhit + cond_signal(main.sleepCond); // In case is waiting for stop or ponderhit while (!main.do_sleep) - cond_wait(&sleepCond, &main.sleepLock); + cond_wait(sleepCond, main.sleepLock); - lock_release(&main.sleepLock); + lock_release(main.sleepLock); } @@ -502,10 +491,10 @@ void ThreadsManager::wait_for_stop_or_ponderhit() { Thread& main = threads[0]; - lock_grab(&main.sleepLock); + lock_grab(main.sleepLock); while (!Signals.stop) - cond_wait(&main.sleepCond, &main.sleepLock); + cond_wait(main.sleepCond, main.sleepLock); - lock_release(&main.sleepLock); + lock_release(main.sleepLock); }