src/atomic/SDL_spinlock.c
author Sam Lantinga <slouken@libsdl.org>
Sun, 02 Jun 2013 01:08:14 -0700
changeset 7257 5997d00782e8
parent 7191 75360622e65f
child 7828 1451063c8ecd
child 8477 ad08f0d710f3
permissions -rw-r--r--
Fixed testnative on Mac OS X, which no longer ships X11 by default.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     1
/*
5535
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
     2
  Simple DirectMedia Layer
6885
700f1b25f77f Happy New Year!
Sam Lantinga <slouken@libsdl.org>
parents: 6217
diff changeset
     3
  Copyright (C) 1997-2013 Sam Lantinga <slouken@libsdl.org>
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     4
5535
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
     5
  This software is provided 'as-is', without any express or implied
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
     6
  warranty.  In no event will the authors be held liable for any damages
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
     7
  arising from the use of this software.
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
     8
5535
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
     9
  Permission is granted to anyone to use this software for any purpose,
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
    10
  including commercial applications, and to alter it and redistribute it
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
    11
  freely, subject to the following restrictions:
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    12
5535
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
    13
  1. The origin of this software must not be misrepresented; you must not
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
    14
     claim that you wrote the original software. If you use this software
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
    15
     in a product, an acknowledgment in the product documentation would be
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
    16
     appreciated but is not required.
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
    17
  2. Altered source versions must be plainly marked as such, and must not be
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
    18
     misrepresented as being the original software.
96594ac5fd1a SDL 1.3 is now under the zlib license.
Sam Lantinga <slouken@libsdl.org>
parents: 5328
diff changeset
    19
  3. This notice may not be removed or altered from any source distribution.
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    20
*/
6217
6952b11b7f46 Make sure that we use consistent configuration options on platforms like Windows so that command line builds and IDE builds have ABI compatibility.
Sam Lantinga <slouken@libsdl.org>
parents: 6138
diff changeset
    21
#include "SDL_config.h"
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    22
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    23
#include "SDL_atomic.h"
5225
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    24
#include "SDL_mutex.h"
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    25
#include "SDL_timer.h"
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    26
5073
1e94e68525d5 Fixed bug #1097
Sam Lantinga <slouken@libsdl.org>
parents: 5071
diff changeset
    27
/* Don't do the check for Visual Studio 2005, it's safe here */
5091
2164a79b5ca9 Only include windows.h on Windows. :)
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
    28
#ifdef __WIN32__
5090
327f181542f1 Include windows.h in a single point in the source, so we can be consistent about the definition of UNICODE and have core utility functions for Windows that all modules can share.
Sam Lantinga <slouken@libsdl.org>
parents: 5086
diff changeset
    29
#include "../core/windows/SDL_windows.h"
5091
2164a79b5ca9 Only include windows.h on Windows. :)
Sam Lantinga <slouken@libsdl.org>
parents: 5090
diff changeset
    30
#endif
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    31
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    32
/* This function is where all the magic happens... */
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    33
SDL_bool
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    34
SDL_AtomicTryLock(SDL_SpinLock *lock)
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    35
{
5225
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    36
#if SDL_ATOMIC_DISABLED
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    37
    /* Terrible terrible damage */
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    38
    static SDL_mutex *_spinlock_mutex;
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    39
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    40
    if (!_spinlock_mutex) {
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    41
        /* Race condition on first lock... */
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    42
        _spinlock_mutex = SDL_CreateMutex();
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    43
    }
6977
b73d51026c68 Changed the name of SDL_mutexP() SDL_mutexV()
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
    44
    SDL_LockMutex(_spinlock_mutex);
5225
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    45
    if (*lock == 0) {
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    46
        *lock = 1;
6977
b73d51026c68 Changed the name of SDL_mutexP() SDL_mutexV()
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
    47
        SDL_UnlockMutex(_spinlock_mutex);
5225
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    48
        return SDL_TRUE;
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    49
    } else {
6977
b73d51026c68 Changed the name of SDL_mutexP() SDL_mutexV()
Sam Lantinga <slouken@libsdl.org>
parents: 6885
diff changeset
    50
        SDL_UnlockMutex(_spinlock_mutex);
5225
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    51
        return SDL_FALSE;
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    52
    }
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    53
5d01d426f2ea It's now possible to disable the fast atomic operations, at a huge performance penalty.
Sam Lantinga <slouken@libsdl.org>
parents: 5097
diff changeset
    54
#elif defined(_MSC_VER)
5015
1bf9e38431ec Use compiler intrinsics on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 5004
diff changeset
    55
    SDL_COMPILE_TIME_ASSERT(locksize, sizeof(*lock) == sizeof(long));
5090
327f181542f1 Include windows.h in a single point in the source, so we can be consistent about the definition of UNICODE and have core utility functions for Windows that all modules can share.
Sam Lantinga <slouken@libsdl.org>
parents: 5086
diff changeset
    56
    return (InterlockedExchange((long*)lock, 1) == 0);
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    57
5095
dceec93471e7 Improvements based on feedback from Anthony Williams
Sam Lantinga <slouken@libsdl.org>
parents: 5091
diff changeset
    58
#elif HAVE_GCC_ATOMICS || HAVE_GCC_SYNC_LOCK_TEST_AND_SET
5004
0c72ae7b7cb2 Added native atomic operations for Windows, Mac OS X, and gcc compiler intrinsics.
Sam Lantinga <slouken@libsdl.org>
parents: 5003
diff changeset
    59
    return (__sync_lock_test_and_set(lock, 1) == 0);
0c72ae7b7cb2 Added native atomic operations for Windows, Mac OS X, and gcc compiler intrinsics.
Sam Lantinga <slouken@libsdl.org>
parents: 5003
diff changeset
    60
5328
f34a5f9ce9f6 Fixed bug 1122 (spinlock fails to compile with -march=armv4t)
Sam Lantinga <slouken@libsdl.org>
parents: 5289
diff changeset
    61
#elif defined(__GNUC__) && defined(__arm__) && \
f34a5f9ce9f6 Fixed bug 1122 (spinlock fails to compile with -march=armv4t)
Sam Lantinga <slouken@libsdl.org>
parents: 5289
diff changeset
    62
        (defined(__ARM_ARCH_4__) || defined(__ARM_ARCH_4T__) || \
5999
0e3fd8178e1d Check for __ARM_ARCH_5TEJ__ in spinlock atomics.
Ryan C. Gordon <icculus@icculus.org>
parents: 5998
diff changeset
    63
         defined(__ARM_ARCH_5__) || defined(__ARM_ARCH_5TE__) || \
0e3fd8178e1d Check for __ARM_ARCH_5TEJ__ in spinlock atomics.
Ryan C. Gordon <icculus@icculus.org>
parents: 5998
diff changeset
    64
         defined(__ARM_ARCH_5TEJ__))
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    65
    int result;
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    66
    __asm__ __volatile__ (
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    67
        "swp %0, %1, [%2]\n"
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    68
        : "=&r,&r" (result) : "r,0" (1), "r,r" (lock) : "memory");
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    69
    return (result == 0);
5004
0c72ae7b7cb2 Added native atomic operations for Windows, Mac OS X, and gcc compiler intrinsics.
Sam Lantinga <slouken@libsdl.org>
parents: 5003
diff changeset
    70
5097
b938ad843e52 More fixes for compilation on Visual Studio
Sam Lantinga <slouken@libsdl.org>
parents: 5095
diff changeset
    71
#elif defined(__GNUC__) && defined(__arm__)
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    72
    int result;
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    73
    __asm__ __volatile__ (
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    74
        "ldrex %0, [%2]\nteq   %0, #0\nstrexeq %0, %1, [%2]"
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    75
        : "=&r" (result) : "r" (1), "r" (lock) : "cc", "memory");
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    76
    return (result == 0);
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    77
5957
9a2b091abb2c Implemented x86 and x86-64 spinlock inline asm.
Ryan C. Gordon <icculus@icculus.org>
parents: 5956
diff changeset
    78
#elif defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__))
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 6977
diff changeset
    79
    int result;
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 6977
diff changeset
    80
    __asm__ __volatile__(
5957
9a2b091abb2c Implemented x86 and x86-64 spinlock inline asm.
Ryan C. Gordon <icculus@icculus.org>
parents: 5956
diff changeset
    81
        "lock ; xchgl %0, (%1)\n"
9a2b091abb2c Implemented x86 and x86-64 spinlock inline asm.
Ryan C. Gordon <icculus@icculus.org>
parents: 5956
diff changeset
    82
        : "=r" (result) : "r" (lock), "0" (1) : "cc", "memory");
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 6977
diff changeset
    83
    return (result == 0);
5957
9a2b091abb2c Implemented x86 and x86-64 spinlock inline asm.
Ryan C. Gordon <icculus@icculus.org>
parents: 5956
diff changeset
    84
5998
e9b9ef14aef4 Let iOS use OSAtomicCompareAndSwap32Barrier() if nothing else is available.
Ryan C. Gordon <icculus@icculus.org>
parents: 5957
diff changeset
    85
#elif defined(__MACOSX__) || defined(__IPHONEOS__)
5957
9a2b091abb2c Implemented x86 and x86-64 spinlock inline asm.
Ryan C. Gordon <icculus@icculus.org>
parents: 5956
diff changeset
    86
    /* Maybe used for PowerPC, but the Intel asm or gcc atomics are favored. */
9a2b091abb2c Implemented x86 and x86-64 spinlock inline asm.
Ryan C. Gordon <icculus@icculus.org>
parents: 5956
diff changeset
    87
    return OSAtomicCompareAndSwap32Barrier(0, 1, lock);
9a2b091abb2c Implemented x86 and x86-64 spinlock inline asm.
Ryan C. Gordon <icculus@icculus.org>
parents: 5956
diff changeset
    88
5557
c1ed57cbfd66 Implemented pthread spinlocks.
Nathan Heisey <nathanheisey@gmail.com>
parents: 5535
diff changeset
    89
#elif HAVE_PTHREAD_SPINLOCK
c1ed57cbfd66 Implemented pthread spinlocks.
Nathan Heisey <nathanheisey@gmail.com>
parents: 5535
diff changeset
    90
    /* pthread instructions */
c1ed57cbfd66 Implemented pthread spinlocks.
Nathan Heisey <nathanheisey@gmail.com>
parents: 5535
diff changeset
    91
    return (pthread_spin_trylock(lock) == 0);
5957
9a2b091abb2c Implemented x86 and x86-64 spinlock inline asm.
Ryan C. Gordon <icculus@icculus.org>
parents: 5956
diff changeset
    92
9a2b091abb2c Implemented x86 and x86-64 spinlock inline asm.
Ryan C. Gordon <icculus@icculus.org>
parents: 5956
diff changeset
    93
#else
5956
c7aebf1841ca Use an actual #error instead of a bogus symbol if there's no spinlock support.
Ryan C. Gordon <icculus@icculus.org>
parents: 5557
diff changeset
    94
#error Please implement for your platform.
c7aebf1841ca Use an actual #error instead of a bogus symbol if there's no spinlock support.
Ryan C. Gordon <icculus@icculus.org>
parents: 5557
diff changeset
    95
    return SDL_FALSE;
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    96
#endif
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    97
}
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    98
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
    99
void
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   100
SDL_AtomicLock(SDL_SpinLock *lock)
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   101
{
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   102
    /* FIXME: Should we have an eventual timeout? */
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   103
    while (!SDL_AtomicTryLock(lock)) {
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   104
        SDL_Delay(0);
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   105
    }
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   106
}
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   107
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   108
void
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   109
SDL_AtomicUnlock(SDL_SpinLock *lock)
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   110
{
5095
dceec93471e7 Improvements based on feedback from Anthony Williams
Sam Lantinga <slouken@libsdl.org>
parents: 5091
diff changeset
   111
#if defined(_MSC_VER)
dceec93471e7 Improvements based on feedback from Anthony Williams
Sam Lantinga <slouken@libsdl.org>
parents: 5091
diff changeset
   112
    _ReadWriteBarrier();
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   113
    *lock = 0;
5095
dceec93471e7 Improvements based on feedback from Anthony Williams
Sam Lantinga <slouken@libsdl.org>
parents: 5091
diff changeset
   114
dceec93471e7 Improvements based on feedback from Anthony Williams
Sam Lantinga <slouken@libsdl.org>
parents: 5091
diff changeset
   115
#elif HAVE_GCC_ATOMICS || HAVE_GCC_SYNC_LOCK_TEST_AND_SET
dceec93471e7 Improvements based on feedback from Anthony Williams
Sam Lantinga <slouken@libsdl.org>
parents: 5091
diff changeset
   116
    __sync_lock_release(lock);
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 6977
diff changeset
   117
5557
c1ed57cbfd66 Implemented pthread spinlocks.
Nathan Heisey <nathanheisey@gmail.com>
parents: 5535
diff changeset
   118
#elif HAVE_PTHREAD_SPINLOCK
c1ed57cbfd66 Implemented pthread spinlocks.
Nathan Heisey <nathanheisey@gmail.com>
parents: 5535
diff changeset
   119
    pthread_spin_unlock(lock);
7191
75360622e65f File style cleanup for the SDL 2.0 release
Sam Lantinga <slouken@libsdl.org>
parents: 6977
diff changeset
   120
5095
dceec93471e7 Improvements based on feedback from Anthony Williams
Sam Lantinga <slouken@libsdl.org>
parents: 5091
diff changeset
   121
#else
dceec93471e7 Improvements based on feedback from Anthony Williams
Sam Lantinga <slouken@libsdl.org>
parents: 5091
diff changeset
   122
    *lock = 0;
dceec93471e7 Improvements based on feedback from Anthony Williams
Sam Lantinga <slouken@libsdl.org>
parents: 5091
diff changeset
   123
#endif
5003
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   124
}
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   125
3a95a2b93eb3 Updated the atomic API for better use cases
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
   126
/* vi: set ts=4 sw=4 expandtab: */