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semaphore: Attempt to acquire before checking timeout

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* The posix specification says that if the object can be acquired immediately, timeout doesnt matter
This commit is contained in:
IndecisiveTurtle 2024-12-24 15:39:17 +02:00
parent c284cf72e1
commit 8f7eb2d0e9
1 changed files with 4 additions and 7 deletions
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11
src/core/libraries/kernel/sync/semaphore.h
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@ -90,7 +90,7 @@ public:
const auto start_time = std::chrono::high_resolution_clock::now();
auto rel_time_ms = std::chrono::ceil<std::chrono::milliseconds>(rel_time);
while (rel_time_ms.count() > 0) {
do {
u64 timeout_ms = static_cast<u64>(rel_time_ms.count());
u64 res = WaitForSingleObjectEx(sem, timeout_ms, true);
if (res == WAIT_OBJECT_0) {
@ -101,7 +101,7 @@ public:
} else {
return false;
}
}
} while (rel_time_ms.count() > 0);
return false;
#elif defined(__APPLE__)
@ -117,12 +117,9 @@ public:
bool try_acquire_until(const std::chrono::time_point<Clock, Duration>& abs_time) {
#ifdef _WIN64
const auto start_time = Clock::now();
if (start_time >= abs_time) {
return false;
}
auto rel_time = std::chrono::ceil<std::chrono::milliseconds>(abs_time - start_time);
while (rel_time.count() > 0) {
do {
u64 timeout_ms = static_cast<u64>(rel_time.count());
u64 res = WaitForSingleObjectEx(sem, timeout_ms, true);
if (res == WAIT_OBJECT_0) {
@ -133,7 +130,7 @@ public:
} else {
return false;
}
}
} while (rel_time.count() > 0);
return false;
#elif defined(__APPLE__)