namespace { extern "C" {
// start_routine() is the C function which is called when a new thread
- // is launched. It simply calls idle_loop() with the supplied threadID.
+ // is launched. It simply calls idle_loop() of the supplied threadID.
// There are two versions of this function; one for POSIX threads and
// one for Windows threads.
activeThreads = cnt;
for (int i = 0; i < MAX_THREADS; i++)
- threads[i].do_sleep = !(i < activeThreads);
+ if (i < activeThreads)
+ {
+ // Dynamically allocate pawn and material hash tables according to the
+ // number of active threads. This avoids preallocating memory for all
+ // possible threads if only few are used as, for instance, on mobile
+ // devices where memory is scarce and allocating for MAX_THREADS could
+ // even result in a crash.
+ threads[i].pawnTable.init();
+ threads[i].materialTable.init();
+
+ threads[i].do_sleep = false;
+ }
+ else
+ threads[i].do_sleep = true;
}
threads[0].state = Thread::SEARCHING;
threads[0].threadID = 0;
- // Allocate pawn and material hash tables for main thread
- init_hash_tables();
-
// Initialize threads lock, used when allocating slaves during splitting
lock_init(&threadsLock);
threads[i].threadID = i;
#if defined(_MSC_VER)
- bool ok = (CreateThread(NULL, 0, start_routine, (LPVOID)&threads[i].threadID , 0, NULL) != NULL);
+ threads[i].handle = CreateThread(NULL, 0, start_routine, (LPVOID)&threads[i].threadID, 0, NULL);
+ bool ok = (threads[i].handle != NULL);
#else
- pthread_t pthreadID;
- bool ok = (pthread_create(&pthreadID, NULL, start_routine, (void*)&threads[i].threadID) == 0);
- pthread_detach(pthreadID);
+ bool ok = (pthread_create(&threads[i].handle, NULL, start_routine, (void*)&threads[i].threadID) == 0);
#endif
+
if (!ok)
{
std::cout << "Failed to create thread number " << i << std::endl;
{
threads[i].do_terminate = true;
threads[i].wake_up();
- while (threads[i].state != Thread::TERMINATED) {}
+
+#if defined(_MSC_VER)
+ WaitForSingleObject(threads[i].handle, 0);
+ CloseHandle(threads[i].handle);
+#else
+ pthread_join(threads[i].handle, NULL);
+ pthread_detach(threads[i].handle);
+#endif
}
// Now we can safely destroy locks and wait conditions
}
-// init_hash_tables() dynamically allocates pawn and material hash tables
-// according to the number of active threads. This avoids preallocating
-// memory for all possible threads if only few are used as, for instance,
-// on mobile devices where memory is scarce and allocating for MAX_THREADS
-// threads could even result in a crash.
-
-void ThreadsManager::init_hash_tables() {
-
- for (int i = 0; i < activeThreads; i++)
- {
- threads[i].pawnTable.init();
- threads[i].materialTable.init();
- }
-}
-
-
// available_slave_exists() tries to find an idle thread which is available as
// a slave for the thread with threadID "master".