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First draft of atomic operations code for GCC and linux.

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This commit is contained in:
Bob Pendleton 2009-06-24 20:20:57 +00:00
parent 0b5bc4d23b
commit c0646fda71
1 changed files with 25 additions and 26 deletions
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51
src/atomic/linux/SDL_atomic.c
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@ -29,148 +29,147 @@
Uint32
SDL_AtomicExchange32(Uint32 * ptr, Uint32 value)
{
return 0;
return __sync_lock_test_and_set(ptr, value);
}
SDL_bool
SDL_AtomicCompareThenSet32(Uint32 * ptr, Uint32 oldvalue, Uint32 newvalue)
{
return SDL_false;
return (SDL_bool)__sync_bool_compare_and_swap(ptr, oldvalue, newvalue);
}
SDL_bool
SDL_AtomicTestThenSet32(Uint32 * ptr)
{
return SDL_false;
return (SDL_bool)(0 == __sync_lock_test_and_set(ptr, 1));
}
void
SDL_AtomicClear32(Uint32 * ptr)
{
__sync_lock_release(ptr);
}
Uint32
SDL_AtomicFetchThenIncrement32(Uint32 * ptr)
{
return 0;
return __sync_fetch_and_add(ptr, 1);
}
Uint32
SDL_AtomicFetchThenDecrement32(Uint32 * ptr)
{
return 0;
return __sync_fetch_and_sub(ptr, 1);
}
Uint32
SDL_AtomicFetchThenAdd32(Uint32 * ptr, Uint32 value)
{
return 0;
return __sync_fetch_and_add(ptr, value);
}
Uint32
SDL_AtomicFetchThenSubtract32(Uint32 * ptr, Uint32 value)
{
return 0;
return __sync_fetch_and_sub(ptr, value);
}
Uint32
SDL_AtomicIncrementThenFetch32(Uint32 * ptr)
{
return 0;
return __sync_add_and_fetch(ptr, 1);
}
Uint32
SDL_AtomicDecrementThenFetch32(Uint32 * ptr)
{
return 0;
return __sync_sub_and_fetch(ptr, 1);
}
Uint32
SDL_AtomicAddThenFetch32(Uint32 * ptr, Uint32 value)
{
return 0;
return __sync_add_and_fetch(ptr, value);
}
Uint32
SDL_AtomicSubtractThenFetch32(Uint32 * ptr, Uint32 value)
{
return 0;
return __sync_sub_and_fetch(ptr, value);
}
#ifdef SDL_HAS_64BIT_TYPE
Uint64
SDL_AtomicExchange64(Uint64 * ptr, Uint64 value)
{
return 0;
return __sync_lock_test_and_set(ptr, value);
}
SDL_bool
SDL_AtomicCompareThenSet64(Uint64 * ptr,
Uint64 oldvalue, Uint64 newvalue)
SDL_AtomicCompareThenSet64(Uint64 * ptr, Uint64 oldvalue, Uint64 newvalue)
{
return SDL_false;
return (SDL_bool)__sync_bool_compare_and_swap(ptr, oldvalue, newvalue);
}
SDL_bool
SDL_AtomicTestThenSet64(Uint64 * ptr)
{
return SDL_false;
return (SDL_bool)(0 == __sync_lock_test_and_set(ptr, 1));
}
void
SDL_AtomicClear64(Uint64 * ptr)
{
__sync_lock_release(ptr);
}
Uint64
SDL_AtomicFetchThenIncrement64(Uint64 * ptr)
{
return 0;
return __sync_fetch_and_add(ptr, 1);
}
Uint64
SDL_AtomicFetchThenDecrement64(Uint64 * ptr)
{
return 0;
return __sync_fetch_and_sub(ptr, 1);
}
Uint64
SDL_AtomicFetchThenAdd64(Uint64 * ptr, Uint64 value)
{
return 0;
return __sync_fetch_and_add(ptr, value);
}
Uint64
SDL_AtomicFetchThenSubtract64(Uint64 * ptr, Uint64 value)
{
return 0;
return __sync_fetch_and_sub(ptr, value);
}
Uint64
SDL_AtomicIncrementThenFetch64(Uint64 * ptr)
{
return 0;
return __sync_add_and_fetch(ptr, 1);
}
Uint64
SDL_AtomicDecrementThenFetch64(Uint64 * ptr)
{
return 0;
return __sync_sub_and_fetch(ptr, 1);
}
Uint64
SDL_AtomicAddThenFetch64(Uint64 * ptr, Uint64 value)
{
return 0;
return __sync_add_and_fetch(ptr, value);
}
Uint64
SDL_AtomicSubtractThenFetch64(Uint64 * ptr, Uint64 value)
{
return 0;
return __sync_sub_and_fetch(ptr, value);
}
#endif
#endif