tor-browser

The Tor Browser
git clone https://git.dasho.dev/tor-browser.git
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AtomicGNU.h (4852B)

      1 /***************************************************************************************************
      2 
      3  Zyan Core Library (Zyan-C)
      4 
      5  Original Author : Florian Bernd
      6 
      7 * Permission is hereby granted, free of charge, to any person obtaining a copy
      8 * of this software and associated documentation files (the "Software"), to deal
      9 * in the Software without restriction, including without limitation the rights
     10 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
     11 * copies of the Software, and to permit persons to whom the Software is
     12 * furnished to do so, subject to the following conditions:
     13 *
     14 * The above copyright notice and this permission notice shall be included in all
     15 * copies or substantial portions of the Software.
     16 *
     17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
     18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
     19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
     20 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
     21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
     22 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
     23 * SOFTWARE.
     24 
     25 ***************************************************************************************************/
     26 
     27 #ifndef ZYCORE_ATOMIC_GNU_H
     28 #define ZYCORE_ATOMIC_GNU_H
     29 
     30 #ifdef __cplusplus
     31 extern "C" {
     32 #endif
     33 
     34 #include "zydis/Zycore/Defines.h"
     35 #include "zydis/Zycore/Types.h"
     36 
     37 /* ============================================================================================== */
     38 /* Functions                                                                                      */
     39 /* ============================================================================================== */
     40 
     41 #if defined(ZYAN_CLANG) || defined(ZYAN_GCC) || defined(ZYAN_ICC)
     42 
     43 /* ---------------------------------------------------------------------------------------------- */
     44 /* Pointer sized                                                                                  */
     45 /* ---------------------------------------------------------------------------------------------- */
     46 
     47 ZYAN_INLINE ZyanUPointer ZyanAtomicCompareExchange(ZyanAtomicPointer* destination,
     48    ZyanUPointer comparand, ZyanUPointer value)
     49 {
     50    return (ZyanUPointer)(__sync_val_compare_and_swap(
     51        &destination->value, (void*)comparand, (void*)value, &destination->value));
     52 }
     53 
     54 ZYAN_INLINE ZyanUPointer ZyanAtomicIncrement(ZyanAtomicPointer* destination)
     55 {
     56    return (ZyanUPointer)(__sync_fetch_and_add(&destination->value, (void*)1,
     57        &destination->value)) + 1;
     58 }
     59 
     60 ZYAN_INLINE ZyanUPointer ZyanAtomicDecrement(ZyanAtomicPointer* destination)
     61 {
     62    return (ZyanUPointer)(__sync_sub_and_fetch(&destination->value, (void*)1, &destination->value));
     63 }
     64 
     65 /* ---------------------------------------------------------------------------------------------- */
     66 /* 32-bit                                                                                         */
     67 /* ---------------------------------------------------------------------------------------------- */
     68 
     69 ZYAN_INLINE ZyanU32 ZyanAtomicCompareExchange32(ZyanAtomic32* destination,
     70    ZyanU32 comparand, ZyanU32 value)
     71 {
     72    return (ZyanU32)(__sync_val_compare_and_swap(&destination->value, comparand, value, 
     73        &destination->value));
     74 }
     75 
     76 ZYAN_INLINE ZyanU32 ZyanAtomicIncrement32(ZyanAtomic32* destination)
     77 {
     78    return (ZyanU32)(__sync_fetch_and_add(&destination->value, 1, &destination->value)) + 1;
     79 }
     80 
     81 ZYAN_INLINE ZyanU32 ZyanAtomicDecrement32(ZyanAtomic32* destination)
     82 {
     83    return (ZyanU32)(__sync_sub_and_fetch(&destination->value, 1, &destination->value));
     84 }
     85 
     86 /* ---------------------------------------------------------------------------------------------- */
     87 /* 64-bit                                                                                         */
     88 /* ---------------------------------------------------------------------------------------------- */
     89 
     90 ZYAN_INLINE ZyanU64 ZyanAtomicCompareExchange64(ZyanAtomic64* destination,
     91    ZyanU64 comparand, ZyanU64 value)
     92 {
     93    return (ZyanU64)(__sync_val_compare_and_swap(&destination->value, comparand, value, 
     94        &destination->value));
     95 }
     96 
     97 ZYAN_INLINE ZyanU64 ZyanAtomicIncrement64(ZyanAtomic64* destination)
     98 {
     99    return (ZyanU64)(__sync_fetch_and_add(&destination->value, 1, &destination->value)) + 1;
    100 }
    101 
    102 ZYAN_INLINE ZyanU64 ZyanAtomicDecrement64(ZyanAtomic64* destination)
    103 {
    104    return (ZyanU64)(__sync_sub_and_fetch(&destination->value, 1, &destination->value));
    105 }
    106 
    107 /* ---------------------------------------------------------------------------------------------- */
    108 
    109 #endif
    110 
    111 /* ============================================================================================== */
    112 
    113 #ifdef __cplusplus
    114 }
    115 #endif
    116 
    117 #endif /* ZYCORE_ATOMIC_GNU_H */