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SVC: Correct WaitSynchronization, WaitProcessWideKey, SignalProcessWideKey.

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This commit is contained in:
Fernando Sahmkow 2020-02-26 22:26:53 -04:00
parent 5b6a67f849
commit d4ebb510a0
9 changed files with 84 additions and 33 deletions
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75
src/core/hle/kernel/svc.cpp
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@ -1541,33 +1541,50 @@ static ResultCode WaitProcessWideKeyAtomic(Core::System& system, VAddr mutex_add
return ERR_INVALID_ADDRESS;
}
UNIMPLEMENTED();
ASSERT(condition_variable_addr == Common::AlignDown(condition_variable_addr, 4));
auto& kernel = system.Kernel();
Handle event_handle;
Thread* current_thread = system.CurrentScheduler().GetCurrentThread();
auto* const current_process = system.Kernel().CurrentProcess();
const auto& handle_table = current_process->GetHandleTable();
std::shared_ptr<Thread> thread = handle_table.Get<Thread>(thread_handle);
ASSERT(thread);
{
SchedulerLockAndSleep lock(kernel, event_handle, current_thread, nano_seconds);
const auto& handle_table = current_process->GetHandleTable();
std::shared_ptr<Thread> thread = handle_table.Get<Thread>(thread_handle);
ASSERT(thread);
const auto release_result = current_process->GetMutex().Release(mutex_addr);
if (release_result.IsError()) {
return release_result;
current_thread->SetSynchronizationResults(nullptr, RESULT_TIMEOUT);
const auto release_result = current_process->GetMutex().Release(mutex_addr);
if (release_result.IsError()) {
lock.CancelSleep();
return release_result;
}
if (nano_seconds == 0) {
lock.CancelSleep();
return RESULT_TIMEOUT;
}
current_thread->SetCondVarWaitAddress(condition_variable_addr);
current_thread->SetMutexWaitAddress(mutex_addr);
current_thread->SetWaitHandle(thread_handle);
current_thread->SetStatus(ThreadStatus::WaitCondVar);
current_process->InsertConditionVariableThread(SharedFrom(current_thread));
}
Thread* current_thread = system.CurrentScheduler().GetCurrentThread();
current_thread->SetCondVarWaitAddress(condition_variable_addr);
current_thread->SetMutexWaitAddress(mutex_addr);
current_thread->SetWaitHandle(thread_handle);
current_thread->SetStatus(ThreadStatus::WaitCondVar);
current_thread->InvalidateWakeupCallback();
current_process->InsertConditionVariableThread(SharedFrom(current_thread));
if (event_handle != InvalidHandle) {
auto& time_manager = kernel.TimeManager();
time_manager.UnscheduleTimeEvent(event_handle);
}
current_thread->WakeAfterDelay(nano_seconds);
{
SchedulerLock lock(kernel);
current_process->RemoveConditionVariableThread(SharedFrom(current_thread));
}
// Note: Deliberately don't attempt to inherit the lock owner's priority.
return RESULT_SUCCESS;
return current_thread->GetSignalingResult();
}
/// Signal process wide key
@ -1577,10 +1594,10 @@ static void SignalProcessWideKey(Core::System& system, VAddr condition_variable_
ASSERT(condition_variable_addr == Common::AlignDown(condition_variable_addr, 4));
UNIMPLEMENTED();
// Retrieve a list of all threads that are waiting for this condition variable.
auto* const current_process = system.Kernel().CurrentProcess();
auto& kernel = system.Kernel();
SchedulerLock lock(kernel);
auto* const current_process = kernel.CurrentProcess();
std::vector<std::shared_ptr<Thread>> waiting_threads =
current_process->GetConditionVariableThreads(condition_variable_addr);
@ -1589,10 +1606,18 @@ static void SignalProcessWideKey(Core::System& system, VAddr condition_variable_
std::size_t last = waiting_threads.size();
if (target > 0)
last = std::min(waiting_threads.size(), static_cast<std::size_t>(target));
auto& time_manager = kernel.TimeManager();
for (std::size_t index = 0; index < last; ++index) {
auto& thread = waiting_threads[index];
if (thread->GetStatus() != ThreadStatus::WaitCondVar) {
last++;
last = std::min(waiting_threads.size(), last);
continue;
}
time_manager.CancelTimeEvent(thread.get());
ASSERT(thread->GetCondVarWaitAddress() == condition_variable_addr);
// liberate Cond Var Thread.
@ -1630,17 +1655,13 @@ static void SignalProcessWideKey(Core::System& system, VAddr condition_variable_
}
thread->SetLockOwner(nullptr);
thread->SetMutexWaitAddress(0);
thread->SetWaitHandle(0);
thread->SetWaitSynchronizationResult(RESULT_SUCCESS);
thread->SetSynchronizationResults(nullptr, RESULT_SUCCESS);
} else {
// The mutex is already owned by some other thread, make this thread wait on it.
const Handle owner_handle = static_cast<Handle>(mutex_val & Mutex::MutexOwnerMask);
const auto& handle_table = system.Kernel().CurrentProcess()->GetHandleTable();
auto owner = handle_table.Get<Thread>(owner_handle);
ASSERT(owner);
ASSERT(thread->GetStatus() == ThreadStatus::WaitCondVar);
thread->InvalidateWakeupCallback();
thread->SetStatus(ThreadStatus::WaitMutex);
owner->AddMutexWaiter(thread);