repositories / deb_x265.git / blame
| Commit | Line | Data |
|---|---|---|
| 72b9787e JB |
1 | /***************************************************************************** |
| 2 | * Copyright (C) 2013 x265 project | |
| 3 | * | |
| 4 | * Authors: Steve Borho <steve@borho.org> | |
| 5 | * | |
| 6 | * This program is free software; you can redistribute it and/or modify | |
| 7 | * it under the terms of the GNU General Public License as published by | |
| 8 | * the Free Software Foundation; either version 2 of the License, or | |
| 9 | * (at your option) any later version. | |
| 10 | * | |
| 11 | * This program is distributed in the hope that it will be useful, | |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | * GNU General Public License for more details. | |
| 15 | * | |
| 16 | * You should have received a copy of the GNU General Public License | |
| 17 | * along with this program; if not, write to the Free Software | |
| 18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111, USA. | |
| 19 | * | |
| 20 | * This program is also available under a commercial proprietary license. | |
| 21 | * For more information, contact us at license @ x265.com | |
| 22 | *****************************************************************************/ | |
| 23 | ||
| 24 | #ifndef X265_WINXP_H | |
| 25 | #define X265_WINXP_H | |
| 26 | ||
| 27 | #if defined(_WIN32) && (_WIN32_WINNT < 0x0600) // _WIN32_WINNT_VISTA | |
| 28 | ||
| 29 | #ifdef _MSC_VER | |
| 30 | #include <intrin.h> // _InterlockedCompareExchange64 | |
| 31 | #endif | |
| 32 | ||
| 33 | namespace x265 { | |
| 34 | /* non-native condition variable */ | |
| 35 | typedef struct | |
| 36 | { | |
| 37 | CRITICAL_SECTION broadcastMutex; | |
| 38 | CRITICAL_SECTION waiterCountMutex; | |
| 39 | HANDLE semaphore; | |
| 40 | HANDLE waitersDone; | |
| 41 | volatile int waiterCount; | |
| 42 | volatile int bIsBroadcast; | |
| 43 | } ConditionVariable; | |
| 44 | ||
| 45 | int WINAPI cond_init(ConditionVariable *cond); | |
| 46 | void WINAPI cond_broadcast(ConditionVariable *cond); | |
| 47 | void WINAPI cond_signal(ConditionVariable *cond); | |
| 48 | BOOL WINAPI cond_wait(ConditionVariable *cond, CRITICAL_SECTION *mutex, DWORD wait); | |
| 49 | void cond_destroy(ConditionVariable *cond); | |
| 50 | ||
| 51 | /* map missing API symbols to our structure and functions */ | |
| 52 | #define CONDITION_VARIABLE x265::ConditionVariable | |
| 53 | #define InitializeConditionVariable x265::cond_init | |
| 54 | #define SleepConditionVariableCS x265::cond_wait | |
| 55 | #define WakeConditionVariable x265::cond_signal | |
| 56 | #define WakeAllConditionVariable x265::cond_broadcast | |
| 57 | #define XP_CONDITION_VAR_FREE x265::cond_destroy | |
| 58 | ||
| 59 | #if defined(_MSC_VER) | |
| 60 | ||
| 61 | /* Windows XP did not define atomic OR 64, but gcc has a good version, so | |
| 62 | * only use this workaround when targeting XP with MSVC */ | |
| 63 | FORCEINLINE LONGLONG interlocked_OR64(__inout LONGLONG volatile *Destination, | |
| 64 | __in LONGLONG Value) | |
| 65 | { | |
| 66 | LONGLONG Old; | |
| 67 | ||
| 68 | do | |
| 69 | { | |
| 70 | Old = *Destination; | |
| 71 | } | |
| 72 | while (_InterlockedCompareExchange64(Destination, Old | Value, Old) != Old); | |
| 73 | ||
| 74 | return Old; | |
| 75 | } | |
| 76 | ||
| 77 | #define ATOMIC_OR(ptr, mask) x265::interlocked_OR64((volatile LONG64*)ptr, mask) | |
| 78 | ||
| 79 | #if defined(_MSC_VER) && !defined(__INTEL_COMPILER) | |
| 80 | #pragma intrinsic(_InterlockedCompareExchange64) | |
| 81 | #endif | |
| 82 | #endif // defined(_MSC_VER) | |
| 83 | } // namespace x265 | |
| 84 | ||
| 85 | #else // if defined(_WIN32) && (_WIN32_WINNT < 0x0600) | |
| 86 | ||
| 87 | #define XP_CONDITION_VAR_FREE(x) | |
| 88 | ||
| 89 | #endif // _WIN32_WINNT <= _WIN32_WINNT_WINXP | |
| 90 | ||
| 91 | #endif // ifndef X265_WINXP_H |