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| 1 /* libs/graphics/ports/SkThread_none.cpp | |
| 2 ** | |
| 3 ** Copyright 2008, The Android Open Source Project | |
| 4 ** | |
| 5 ** Licensed under the Apache License, Version 2.0 (the "License"); | |
| 6 ** you may not use this file except in compliance with the License. | |
| 7 ** You may obtain a copy of the License at | |
| 8 ** | |
| 9 ** http://www.apache.org/licenses/LICENSE-2.0 | |
| 10 ** | |
| 11 ** Unless required by applicable law or agreed to in writing, software | |
| 12 ** distributed under the License is distributed on an "AS IS" BASIS, | |
| 13 ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| 14 ** See the License for the specific language governing permissions and | |
| 15 ** limitations under the License. | |
| 16 */ | |
| 17 | |
| 18 #include <windows.h> | |
| 19 #include "SkThread.h" | |
| 20 | |
| 21 namespace { | |
| 22 | |
| 23 template <bool> | |
| 24 struct CompileAssert { | |
| 25 }; | |
| 26 | |
| 27 } // namespace | |
| 28 | |
| 29 #define COMPILE_ASSERT(expr, msg) \ | |
| 30 typedef CompileAssert<(bool(expr))> msg[bool(expr) ? 1 : -1] | |
| 31 | |
| 32 int32_t sk_atomic_inc(int32_t* addr) | |
| 33 { | |
| 34 // InterlockedIncrement returns the new value, we want to return the old. | |
| 35 return InterlockedIncrement(reinterpret_cast<LONG*>(addr)) - 1; | |
| 36 } | |
| 37 | |
| 38 int32_t sk_atomic_dec(int32_t* addr) | |
| 39 { | |
| 40 return InterlockedDecrement(reinterpret_cast<LONG*>(addr)) + 1; | |
| 41 } | |
| 42 | |
| 43 SkMutex::SkMutex(bool /* isGlobal */) | |
| 44 { | |
| 45 COMPILE_ASSERT(sizeof(fStorage) > sizeof(CRITICAL_SECTION), | |
| 46 NotEnoughSizeForCriticalSection); | |
| 47 InitializeCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&fStorage)); | |
| 48 } | |
| 49 | |
| 50 SkMutex::~SkMutex() | |
| 51 { | |
| 52 DeleteCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&fStorage)); | |
| 53 } | |
| 54 | |
| 55 void SkMutex::acquire() | |
| 56 { | |
| 57 EnterCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&fStorage)); | |
| 58 } | |
| 59 | |
| 60 void SkMutex::release() | |
| 61 { | |
| 62 LeaveCriticalSection(reinterpret_cast<CRITICAL_SECTION*>(&fStorage)); | |
| 63 } | |
| 64 | |
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