1 /*
2  * Copyright 2015 Google Inc.
3  *
4  * Use of this source code is governed by a BSD-style license that can be
5  * found in the LICENSE file.
6  */
7 
8 #include "SkSpinlock.h"
9 
10 void SkSpinlock::contendedAcquire() {
11     // To act as a mutex, we need an acquire barrier when we acquire the lock.
12     while (fLocked.exchange(true, std::memory_order_acquire)) {
13         /*spin*/
14     }
15 }
16