| mtklein | 828877d | 2015-07-09 10:51:36 -0700 | [diff] [blame] | 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 | |
| mtklein | 15923c9 | 2016-02-29 10:14:38 -0800 | [diff] [blame] | 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 | } |
| mtklein | 828877d | 2015-07-09 10:51:36 -0700 | [diff] [blame] | 15 | } |