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 65
