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 contendedAcquire()10void SkPODSpinlock::contendedAcquire() { 11 // To act as a mutex, we need an acquire barrier when we take the lock. 12 while(sk_atomic_exchange(&fLocked, true, sk_memory_order_acquire)) { /*spin*/ } 13 } 14