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The Tor Browser
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AtomicMSVC.h (5481B)

      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_MSVC_H
     28 #define ZYCORE_ATOMIC_MSVC_H
     29 
     30 #ifdef __cplusplus
     31 extern "C" {
     32 #endif
     33 
     34 #include <Windows.h>
     35 
     36 #include "zydis/Zycore/Defines.h"
     37 #include "zydis/Zycore/Types.h"
     38 
     39 /* ============================================================================================== */
     40 /* Functions                                                                                      */
     41 /* ============================================================================================== */
     42 
     43 #if defined(ZYAN_MSVC)
     44 
     45 /* ---------------------------------------------------------------------------------------------- */
     46 /* Pointer sized                                                                                  */
     47 /* ---------------------------------------------------------------------------------------------- */
     48 
     49 #if defined(ZYAN_X86)
     50 
     51 static ZYAN_INLINE ZyanUPointer ZyanAtomicCompareExchange(ZyanAtomicPointer* destination,
     52    ZyanUPointer comparand, ZyanUPointer value)
     53 {
     54    return (ZyanUPointer)ZyanAtomicCompareExchange32((ZyanAtomic32*)destination, comparand, value);
     55 }
     56 
     57 static ZYAN_INLINE ZyanUPointer ZyanAtomicIncrement(ZyanAtomicPointer* destination)
     58 {
     59    return (ZyanUPointer)ZyanAtomicIncrement32((ZyanAtomic32*)destination);
     60 }
     61 
     62 static ZYAN_INLINE ZyanUPointer ZyanAtomicDecrement(ZyanAtomicPointer* destination)
     63 {
     64    return (ZyanUPointer)ZyanAtomicDecrement32((ZyanAtomic32*)destination);
     65 }
     66 
     67 #elif defined(ZYAN_X64)
     68 
     69 static ZYAN_INLINE ZyanUPointer ZyanAtomicCompareExchange(ZyanAtomicPointer* destination,
     70    ZyanUPointer comparand, ZyanUPointer value)
     71 {
     72    return (ZyanUPointer)ZyanAtomicCompareExchange64((ZyanAtomic64*)destination, comparand, value);
     73 }
     74 
     75 static ZYAN_INLINE ZyanUPointer ZyanAtomicIncrement(ZyanAtomicPointer* destination)
     76 {
     77    return (ZyanUPointer)ZyanAtomicIncrement64((ZyanAtomic64*)destination);
     78 }
     79 
     80 static ZYAN_INLINE ZyanUPointer ZyanAtomicDecrement(ZyanAtomicPointer* destination)
     81 {
     82    return (ZyanUPointer)ZyanAtomicDecrement64((ZyanAtomic64*)destination);
     83 }
     84 
     85 #else
     86 #   error "Unsupported architecture detected"
     87 #endif
     88 
     89 /* ---------------------------------------------------------------------------------------------- */
     90 /* 32-bit                                                                                         */
     91 /* ---------------------------------------------------------------------------------------------- */
     92 
     93 static ZYAN_INLINE ZyanU32 ZyanAtomicCompareExchange32(ZyanAtomic32* destination,
     94    ZyanU32 comparand, ZyanU32 value)
     95 {
     96    return (ZyanU32)(_InterlockedCompareExchange((volatile LONG*)&(destination->value),
     97        (LONG)value, (LONG)comparand));
     98 }
     99 
    100 static ZYAN_INLINE ZyanU32 ZyanAtomicIncrement32(ZyanAtomic32* destination)
    101 {
    102    return (ZyanU32)(_InterlockedIncrement((volatile LONG*)&(destination->value)));
    103 }
    104 
    105 static ZYAN_INLINE ZyanU32 ZyanAtomicDecrement32(ZyanAtomic32* destination)
    106 {
    107    return (ZyanU32)(_InterlockedDecrement((volatile LONG*)&(destination->value)));
    108 }
    109 
    110 /* ---------------------------------------------------------------------------------------------- */
    111 /* 64-bit                                                                                         */
    112 /* ---------------------------------------------------------------------------------------------- */
    113 
    114 static ZYAN_INLINE ZyanU64 ZyanAtomicCompareExchange64(ZyanAtomic64* destination,
    115    ZyanU64 comparand, ZyanU64 value)
    116 {
    117    return (ZyanU64)(_InterlockedCompareExchange64((volatile LONG64*)&(destination->value),
    118        (LONG64)value, (LONG64)comparand));
    119 }
    120 
    121 static ZYAN_INLINE ZyanU64 ZyanAtomicIncrement64(ZyanAtomic64* destination)
    122 {
    123    return (ZyanU64)(_InterlockedIncrement64((volatile LONG64*)&(destination->value)));
    124 }
    125 
    126 static ZYAN_INLINE ZyanU64 ZyanAtomicDecrement64(ZyanAtomic64* destination)
    127 {
    128    return (ZyanU64)(_InterlockedDecrement64((volatile LONG64*)&(destination->value)));
    129 }
    130 
    131 /* ---------------------------------------------------------------------------------------------- */
    132 
    133 #endif
    134 
    135 /* ============================================================================================== */
    136 
    137 #ifdef __cplusplus
    138 }
    139 #endif
    140 
    141 #endif /* ZYCORE_ATOMIC_MSVC_H */