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Use signal object instead of wait object

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Raymond Zhao 2024-05-22 10:11:34 -07:00
parent 1ab6cd7dab
commit f392daa61f
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GPG Key ID: 4DA8A81F5F7FCF93
1 changed files with 14 additions and 7 deletions
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21
src/reflock.c
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@ -15,24 +15,31 @@
#define REFLOCK__POISON ((long) 0x300dead0UL)
/* clang-format on */
static void* reflock__wait_object = NULL;
/* Prevents the possibility of exiting early due to spurious wakeups. */
static void* reflock__signal_object = NULL;
void reflock_init(reflock_t* reflock) {
reflock->state = 0;
}
static void reflock__signal_event(void* address) {
reflock__wait_object = NULL;
reflock__signal_object = address;
WakeByAddressSingle(address);
}
static void reflock__await_event(void* address) {
reflock__wait_object = address;
BOOL status = TRUE;
if (reflock__signal_object == address) {
reflock__signal_object = NULL;
}
do {
BOOL status = WaitOnAddress(address, reflock__wait_object, sizeof(void*), INFINITE);
if (status != TRUE)
abort();
} while (reflock__wait_object == address);
status = WaitOnAddress(address, address, sizeof(void*), INFINITE);
} while (reflock__signal_object != address);
if (status != TRUE)
abort();
}
void reflock_ref(reflock_t* reflock) {