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Merge pull request #20 from jserv/arm-aarch64-atomic-yield

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Implement ARM/Aarch64 atomic_yield fastpath
This commit is contained in:
Daan
2019-06-23 10:25:36 -07:00
committed by GitHub
parent 06f8da4218 77991fccee
commit 38d1aad9f7
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() {
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() {
asm volatile ("pause" ::: "memory");
}
#elif defined(__arm__) || defined(__aarch64__)
static inline void mi_atomic_yield() {
asm volatile("yield");
}
#endif
#else
#include <unistd.h>
static inline void mi_atomic_yield() {