ResultCode ReleaseSemaphore(s32* count, Handle handle, s32 release_count) {
Semaphore* semaphore = g_object_pool.Get<Semaphore>(handle);
if (semaphore == nullptr)
return InvalidHandle(ErrorModule::Kernel);
if (semaphore->max_count - semaphore->available_count < release_count)
return ResultCode(ErrorDescription::OutOfRange, ErrorModule::Kernel,
ErrorSummary::InvalidArgument, ErrorLevel::Permanent);
*count = semaphore->available_count;
semaphore->available_count += release_count;
// Notify some of the threads that the semaphore has been released
// stop once the semaphore is full again or there are no more waiting threads
while (!semaphore->waiting_threads.empty() && semaphore->IsAvailable()) {
Kernel::ResumeThreadFromWait(semaphore->waiting_threads.front());
semaphore->waiting_threads.pop();
--semaphore->available_count;
}
return RESULT_SUCCESS;
}
