136#ifdef SDL_WIKI_DOCUMENTATION_SECTION
154#define SDL_CompilerBarrier() DoCompilerSpecificReadWriteBarrier()
155#elif defined(_MSC_VER) && (_MSC_VER > 1200) && !defined(__clang__)
156void _ReadWriteBarrier(
void);
157#pragma intrinsic(_ReadWriteBarrier)
158#define SDL_CompilerBarrier() _ReadWriteBarrier()
159#elif (defined(__GNUC__) && !defined(SDL_PLATFORM_EMSCRIPTEN)) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x5120))
161#define SDL_CompilerBarrier() __asm__ __volatile__ ("" : : : "memory")
162#elif defined(__WATCOMC__)
164#pragma aux SDL_CompilerBarrier = "" parm [] modify exact [];
166#define SDL_CompilerBarrier() \
167{ SDL_SpinLock _tmp = 0; SDL_LockSpinlock(&_tmp); SDL_UnlockSpinlock(&_tmp); }
215#if defined(__GNUC__) && (defined(__powerpc__) || defined(__ppc__))
216#define SDL_MemoryBarrierRelease() __asm__ __volatile__ ("lwsync" : : : "memory")
217#define SDL_MemoryBarrierAcquire() __asm__ __volatile__ ("lwsync" : : : "memory")
218#elif defined(__GNUC__) && defined(__aarch64__)
219#define SDL_MemoryBarrierRelease() __asm__ __volatile__ ("dmb ish" : : : "memory")
220#define SDL_MemoryBarrierAcquire() __asm__ __volatile__ ("dmb ish" : : : "memory")
221#elif defined(__GNUC__) && defined(__arm__)
229typedef void (*SDL_KernelMemoryBarrierFunc)();
230#define SDL_MemoryBarrierRelease() ((SDL_KernelMemoryBarrierFunc)0xffff0fa0)()
231#define SDL_MemoryBarrierAcquire() ((SDL_KernelMemoryBarrierFunc)0xffff0fa0)()
233#if defined(__ARM_ARCH_7__) || defined(__ARM_ARCH_7A__) || defined(__ARM_ARCH_7EM__) || defined(__ARM_ARCH_7R__) || defined(__ARM_ARCH_7M__) || defined(__ARM_ARCH_7S__) || defined(__ARM_ARCH_8A__)
234#define SDL_MemoryBarrierRelease() __asm__ __volatile__ ("dmb ish" : : : "memory")
235#define SDL_MemoryBarrierAcquire() __asm__ __volatile__ ("dmb ish" : : : "memory")
236#elif defined(__ARM_ARCH_6__) || defined(__ARM_ARCH_6J__) || defined(__ARM_ARCH_6K__) || defined(__ARM_ARCH_6T2__) || defined(__ARM_ARCH_6Z__) || defined(__ARM_ARCH_6ZK__)
239#define SDL_MEMORY_BARRIER_USES_FUNCTION
240#define SDL_MemoryBarrierRelease() SDL_MemoryBarrierReleaseFunction()
241#define SDL_MemoryBarrierAcquire() SDL_MemoryBarrierAcquireFunction()
243#define SDL_MemoryBarrierRelease() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" : : "r"(0) : "memory")
244#define SDL_MemoryBarrierAcquire() __asm__ __volatile__ ("mcr p15, 0, %0, c7, c10, 5" : : "r"(0) : "memory")
247#define SDL_MemoryBarrierRelease() __asm__ __volatile__ ("" : : : "memory")
248#define SDL_MemoryBarrierAcquire() __asm__ __volatile__ ("" : : : "memory")
252#if (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x5120))
255#define SDL_MemoryBarrierRelease() __machine_rel_barrier()
256#define SDL_MemoryBarrierAcquire() __machine_acq_barrier()
259#define SDL_MemoryBarrierRelease() SDL_CompilerBarrier()
260#define SDL_MemoryBarrierAcquire() SDL_CompilerBarrier()
265#ifdef SDL_WIKI_DOCUMENTATION_SECTION
283#define SDL_CPUPauseInstruction() DoACPUPauseInACompilerAndArchitectureSpecificWay
284#elif (defined(__GNUC__) || defined(__clang__)) && (defined(__i386__) || defined(__x86_64__))
285 #define SDL_CPUPauseInstruction() __asm__ __volatile__("pause\n")
286#elif (defined(__arm__) && defined(__ARM_ARCH) && __ARM_ARCH >= 7) || defined(__aarch64__)
287 #define SDL_CPUPauseInstruction() __asm__ __volatile__("yield" ::: "memory")
288#elif (defined(__powerpc__) || defined(__powerpc64__))
289 #define SDL_CPUPauseInstruction() __asm__ __volatile__("or 27,27,27");
290#elif (defined(__riscv) && __riscv_xlen == 64)
291 #define SDL_CPUPauseInstruction() __asm__ __volatile__(".insn i 0x0F, 0, x0, x0, 0x010");
292#elif defined(_MSC_VER) && (defined(_M_IX86) || defined(_M_X64))
293 #define SDL_CPUPauseInstruction() _mm_pause()
294#elif defined(_MSC_VER) && (defined(_M_ARM) || defined(_M_ARM64))
295 #define SDL_CPUPauseInstruction() __yield()
296#elif defined(__WATCOMC__) && defined(__386__)
298 #pragma aux SDL_CPUPauseInstruction = ".686p" ".xmm2" "pause"
300 #define SDL_CPUPauseInstruction()
401#ifndef SDL_AtomicIncRef
415#define SDL_AtomicIncRef(a) SDL_AtomicAdd(a, 1)
418#ifndef SDL_AtomicDecRef
433#define SDL_AtomicDecRef(a) (SDL_AtomicAdd(a, -1) == 1)
void SDL_MemoryBarrierAcquireFunction(void)
int SDL_AtomicSet(SDL_AtomicInt *a, int v)
void * SDL_AtomicGetPtr(void **a)
#define SDL_CompilerBarrier()
void SDL_MemoryBarrierReleaseFunction(void)
int SDL_AtomicGet(SDL_AtomicInt *a)
SDL_bool SDL_AtomicCompareAndSwap(SDL_AtomicInt *a, int oldval, int newval)
#define SDL_CPUPauseInstruction()
SDL_bool SDL_AtomicCompareAndSwapPointer(void **a, void *oldval, void *newval)
void SDL_LockSpinlock(SDL_SpinLock *lock)
int SDL_AtomicAdd(SDL_AtomicInt *a, int v)
void SDL_UnlockSpinlock(SDL_SpinLock *lock)
SDL_bool SDL_TryLockSpinlock(SDL_SpinLock *lock)
void * SDL_AtomicSetPtr(void **a, void *v)