michael@0: /*
michael@0:  * Copyright 2012 Google Inc.
michael@0:  *
michael@0:  * Use of this source code is governed by a BSD-style license that can be
michael@0:  * found in the LICENSE file.
michael@0:  */
michael@0: 
michael@0: #include "SkCountdown.h"
michael@0: #include "SkThread.h"
michael@0: 
michael@0: SkCountdown::SkCountdown(int32_t count)
michael@0: : fCount(count) {}
michael@0: 
michael@0: void SkCountdown::reset(int32_t count) {
michael@0:     fCount = count;
michael@0: }
michael@0: 
michael@0: void SkCountdown::run() {
michael@0:     if (sk_atomic_dec(&fCount) == 1) {
michael@0:         fReady.lock();
michael@0:         fReady.signal();
michael@0:         fReady.unlock();
michael@0:     }
michael@0: }
michael@0: 
michael@0: void SkCountdown::wait() {
michael@0:     fReady.lock();
michael@0:     while (fCount > 0) {
michael@0:         fReady.wait();
michael@0:     }
michael@0:     fReady.unlock();
michael@0: }