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HAVE_GCC_ATOMICS covers the test and set

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This commit is contained in:
Sam Lantinga 2011-01-21 21:45:55 -08:00
parent b3e14d4341
commit daecbfdc17
3 changed files with 13 additions and 14 deletions
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24
configure.in
View File

@ -311,18 +311,18 @@ if test x$enable_gcc_atomics = xyes; then
if test x$have_gcc_atomics = xyes; then
AC_DEFINE(HAVE_GCC_ATOMICS)
fi
# See if we have the minimum operation needed for GCC atomics
AC_TRY_LINK([
],[
int a;
__sync_lock_test_and_set(&a, 1);
],[
have_gcc_sync_lock_test_and_set=yes
])
if test x$have_gcc_sync_lock_test_and_set = xyes; then
AC_DEFINE(HAVE_GCC_SYNC_LOCK_TEST_AND_SET)
else
# See if we have the minimum operation needed for GCC atomics
AC_TRY_LINK([
],[
int a;
__sync_lock_test_and_set(&a, 1);
],[
have_gcc_sync_lock_test_and_set=yes
])
if test x$have_gcc_sync_lock_test_and_set = xyes; then
AC_DEFINE(HAVE_GCC_SYNC_LOCK_TEST_AND_SET)
fi
fi
fi

1
include/SDL_config_iphoneos.h
View File

@ -44,7 +44,6 @@ typedef unsigned long uintptr_t;
#define SDL_HAS_64BIT_TYPE 1
#define HAVE_GCC_ATOMICS 1
#define HAVE_GCC_SYNC_LOCK_TEST_AND_SET 1
#define HAVE_ALLOCA_H 1
#define HAVE_SYS_TYPES_H 1

2
src/atomic/SDL_spinlock.c
View File

@ -36,7 +36,7 @@ SDL_AtomicTryLock(SDL_SpinLock *lock)
#elif defined(__MACOSX__)
return OSAtomicCompareAndSwap32Barrier(0, 1, lock);
#elif defined(HAVE_GCC_SYNC_LOCK_TEST_AND_SET)
#elif defined(HAVE_GCC_ATOMICS) || defined(HAVE_GCC_SYNC_LOCK_TEST_AND_SET)
return (__sync_lock_test_and_set(lock, 1) == 0);
#elif defined(__GNUC__) && defined(__arm__) && defined(__ARM_ARCH_5__)