From 11dd49da1625e1a8197c6d9f8d22743a974ddb72 Mon Sep 17 00:00:00 2001 From: Shinya Sato Date: Sat, 21 Mar 2026 20:10:16 +0900 Subject: V0.13.2-1 --- src/cas_spinlock.h | 23 +++++++++++++++++++++++ 1 file changed, 23 insertions(+) (limited to 'src/cas_spinlock.h') diff --git a/src/cas_spinlock.h b/src/cas_spinlock.h index cb2dabd..1f25ebf 100644 --- a/src/cas_spinlock.h +++ b/src/cas_spinlock.h @@ -1,11 +1,34 @@ //#define CAS_LOCK_USLEEP 4 #define CAS_LOCK_USLEEP 200 + + +#define USE_UNLIKELY +#ifdef USE_UNLIKELY +#include "unlikely.h" +static inline void lock(volatile int *aexclusion) { + if (likely(__sync_lock_test_and_set(aexclusion, 1) == 0)) { + return; + } + + while (__sync_lock_test_and_set(aexclusion, 1)) { + while (*aexclusion) { + usleep(CAS_LOCK_USLEEP); + } + } +} + +#else + static inline void lock(volatile int *aexclusion) { while (__sync_lock_test_and_set(aexclusion, 1)) while (*aexclusion) usleep(CAS_LOCK_USLEEP); } + +#endif + + static inline void unlock(volatile int *aexclusion) { __sync_lock_release(aexclusion); } -- cgit v1.2.3