| /* |
| * Copyright 2011 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #ifndef SFNTLY_CPP_SRC_SFNTLY_PORT_ATOMIC_H_ |
| #define SFNTLY_CPP_SRC_SFNTLY_PORT_ATOMIC_H_ |
| |
| #if defined (WIN32) |
| |
| #include <windows.h> |
| |
| static inline size_t AtomicIncrement(size_t* address) { |
| #if defined (_WIN64) |
| return InterlockedIncrement64(reinterpret_cast<LONGLONG*>(address)); |
| #else |
| return InterlockedIncrement(reinterpret_cast<LONG*>(address)); |
| #endif |
| } |
| |
| static inline size_t AtomicDecrement(size_t* address) { |
| #if defined (_WIN64) |
| return InterlockedDecrement64(reinterpret_cast<LONGLONG*>(address)); |
| #else |
| return InterlockedDecrement(reinterpret_cast<LONG*>(address)); |
| #endif |
| } |
| |
| #elif defined (__APPLE__) |
| |
| #include <libkern/OSAtomic.h> |
| |
| static inline size_t AtomicIncrement(size_t* address) { |
| return OSAtomicIncrement32Barrier(reinterpret_cast<int32_t*>(address)); |
| } |
| |
| static inline size_t AtomicDecrement(size_t* address) { |
| return OSAtomicDecrement32Barrier(reinterpret_cast<int32_t*>(address)); |
| } |
| |
| // Originally we check __GCC_HAVE_SYNC_COMPARE_AND_SWAP_4, however, there are |
| // issues that clang not carring over this definition. Therefore we boldly |
| // assume it's gcc or gcc-compatible here. Compilation shall still fail since |
| // the intrinsics used are GCC-specific. |
| |
| #else |
| |
| #include <stddef.h> |
| |
| static inline size_t AtomicIncrement(size_t* address) { |
| return __sync_add_and_fetch(address, 1); |
| } |
| |
| static inline size_t AtomicDecrement(size_t* address) { |
| return __sync_sub_and_fetch(address, 1); |
| } |
| |
| #endif // WIN32 |
| |
| #endif // SFNTLY_CPP_SRC_SFNTLY_PORT_ATOMIC_H_ |