} // namespace
-// Little helper used by idle_loop() to check that all the slaves of a
-// master thread have finished searching.
+// Little helper used by idle_loop() to check that all the slave threads of a
+// split point have finished searching.
static bool all_slaves_finished(SplitPoint* sp) {
- assert(sp);
-
for (int i = 0; i < Threads.size(); i++)
if (sp->is_slave[i])
return false;
namespace { extern "C" {
// start_routine() is the C function which is called when a new thread
- // is launched. It simply calls idle_loop() of the supplied threadID.
+ // is launched. It simply calls idle_loop() of the supplied thread.
// There are two versions of this function; one for POSIX threads and
// one for Windows threads.
}
-// cutoff_occurred() checks whether a beta cutoff has occurred in
-// the thread's currently active split point, or in some ancestor of
-// the current split point.
+// cutoff_occurred() checks whether a beta cutoff has occurred in the current
+// active split point, or in some ancestor of the split point.
bool Thread::cutoff_occurred() const {
void ThreadsManager::init() {
- // Threads will go to sleep as soon as created, only main thread is kept alive
- set_size(1);
- threads[0].state = Thread::SEARCHING;
- threads[0].threadID = 0;
-
// Initialize threads lock, used when allocating slaves during splitting
lock_init(&threadsLock);
lock_init(&(threads[i].splitPoints[j].lock));
}
- // Create and startup all the threads but the main that is already running
+ // Initialize main thread's associated data
+ threads[0].state = Thread::SEARCHING;
+ threads[0].threadID = 0;
+ set_size(1); // This makes all the threads but the main to go to sleep
+
+ // Create and launch all the threads but the main that is already running,
+ // threads will go immediately to sleep.
for (int i = 1; i < MAX_THREADS; i++)
{
threads[i].state = Thread::AVAILABLE;
CloseHandle(threads[i].handle);
#else
pthread_join(threads[i].handle, NULL);
- pthread_detach(threads[i].handle);
#endif
}