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reflock: remove _sync_sub_and_fetch()

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Bert Belder
2018-05-01 22:11:13 +02:00
parent 06342920d6
commit 9d61ddfddb
1 changed files with 1 additions and 7 deletions
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8
src/reflock.c
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@@ -50,12 +50,6 @@ static inline uint32_t _sync_add_and_fetch(volatile uint32_t* target,
return InterlockedAdd((volatile long*) target, value);
}
static inline uint32_t _sync_sub_and_fetch(volatile uint32_t* target,
uint32_t value) {
uint32_t add_value = -(int32_t) value;
return _sync_add_and_fetch(target, add_value);
}
static inline uint32_t _sync_fetch_and_set(volatile uint32_t* target,
uint32_t value) {
static_assert(sizeof(*target) == sizeof(long), "");
@@ -69,7 +63,7 @@ void reflock_ref(reflock_t* reflock) {
}
void reflock_unref(reflock_t* reflock) {
uint32_t state = _sync_sub_and_fetch(&reflock->state, _REF);
uint32_t state = _sync_add_and_fetch(&reflock->state, -(int32_t) _REF);
uint32_t ref_count = state & _REF_MASK;
uint32_t destroy = state & _DESTROY_MASK;