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Implement ARM/Aarch64 atomic_yield fastpath

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Jim Huang 2019-06-23 16:53:00 +08:00 • committed by Jim Huang
parent 06f8da4218
commit 77991fccee
1 changed files with 8 additions and 1 deletions
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9
include/mimalloc-atomic.h
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@ -156,10 +156,17 @@ static inline uintptr_t mi_atomic_exchange(volatile uintptr_t* p, uintptr_t exch
static inline void mi_atomic_yield() { static inline void mi_atomic_yield() {
std::this_thread::yield(); std::this_thread::yield();
} }
#elif (defined(__GNUC__) || defined(__clang__)) && (defined(__x86_64__) || defined(__i386__)) #elif (defined(__GNUC__) || defined(__clang__)) && \
(defined(__x86_64__) || defined(__i386__) || defined(__arm__) || defined(__aarch64__))
#if defined(__x86_64__) || defined(__i386__)
static inline void mi_atomic_yield() { static inline void mi_atomic_yield() {
asm volatile ("pause" ::: "memory"); asm volatile ("pause" ::: "memory");
} }
#elif defined(__arm__) || defined(__aarch64__)
static inline void mi_atomic_yield() {
asm volatile("yield");
}
#endif
#else #else
#include <unistd.h> #include <unistd.h>
static inline void mi_atomic_yield() { static inline void mi_atomic_yield() {