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[sanitizer] Use atomic_fetch_add instead of load/store

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This commit is contained in:
Vitaly Buka 2023-05-24 16:19:30 -07:00
parent ae072da552
commit f5808fc197
1 changed files with 3 additions and 7 deletions
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10
compiler-rt/lib/sanitizer_common/sanitizer_allocator_stats.h
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@ -25,17 +25,13 @@ typedef uptr AllocatorStatCounters[AllocatorStatCount];
// Per-thread stats, live in per-thread cache. // Per-thread stats, live in per-thread cache.
class AllocatorStats { class AllocatorStats {
public: public:
void Init() { void Init() { internal_memset(this, 0, sizeof(*this)); }
internal_memset(this, 0, sizeof(*this));
}
void Add(AllocatorStat i, uptr v) { void Add(AllocatorStat i, uptr v) {
v += atomic_load(&stats_[i], memory_order_relaxed); atomic_fetch_add(&stats_[i], v, memory_order_relaxed);
atomic_store(&stats_[i], v, memory_order_relaxed);
} }
void Sub(AllocatorStat i, uptr v) { void Sub(AllocatorStat i, uptr v) {
v = atomic_load(&stats_[i], memory_order_relaxed) - v; atomic_fetch_sub(&stats_[i], v, memory_order_relaxed);
atomic_store(&stats_[i], v, memory_order_relaxed);
} }
void Set(AllocatorStat i, uptr v) { void Set(AllocatorStat i, uptr v) {