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make cas weak use release memory order; improve free assembly

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daan 2019-08-26 08:20:26 -07:00
parent 5c7c106d62
commit 7ce9c02fd4
2 changed files with 2 additions and 2 deletions
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2
include/mimalloc-atomic.h
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@ -179,7 +179,7 @@ static inline intptr_t mi_atomic_add(volatile _Atomic(intptr_t)* p, intptr_t add
} }
static inline bool mi_atomic_cas_weak(volatile _Atomic(uintptr_t)* p, uintptr_t desired, uintptr_t expected) { static inline bool mi_atomic_cas_weak(volatile _Atomic(uintptr_t)* p, uintptr_t desired, uintptr_t expected) {
MI_USING_STD MI_USING_STD
return atomic_compare_exchange_weak_explicit(p, &expected, desired, memory_order_acq_rel, memory_order_relaxed); return atomic_compare_exchange_weak_explicit(p, &expected, desired, memory_order_release, memory_order_relaxed);
} }
static inline bool mi_atomic_cas_strong(volatile _Atomic(uintptr_t)* p, uintptr_t desired, uintptr_t expected) { static inline bool mi_atomic_cas_strong(volatile _Atomic(uintptr_t)* p, uintptr_t desired, uintptr_t expected) {
MI_USING_STD MI_USING_STD

2
src/alloc.c
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@ -226,7 +226,7 @@ void mi_free(void* p) mi_attr_noexcept
#endif #endif
const mi_segment_t* const segment = _mi_ptr_segment(p); const mi_segment_t* const segment = _mi_ptr_segment(p);
if (segment == NULL) return; // checks for (p==NULL) if (mi_unlikely(segment == NULL)) return; // checks for (p==NULL)
#if (MI_DEBUG>0) #if (MI_DEBUG>0)
if (mi_unlikely(!mi_is_in_heap_region(p))) { if (mi_unlikely(!mi_is_in_heap_region(p))) {