Mutex: Fix a bug where the thread should not wait if it already has the mutex.
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@ -25,6 +25,7 @@ public:
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bool locked; ///< Current locked state
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Handle lock_thread; ///< Handle to thread that currently has mutex
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std::string name; ///< Name of mutex (optional)
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SharedPtr<Thread> current_thread; ///< Thread that has acquired the mutex
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ResultVal<bool> Wait() override;
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ResultVal<bool> Acquire() override;
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@ -43,6 +44,7 @@ static MutexMap g_mutex_held_locks;
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void MutexAcquireLock(Mutex* mutex, Handle thread = GetCurrentThread()->GetHandle()) {
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g_mutex_held_locks.insert(std::make_pair(thread, mutex->GetHandle()));
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mutex->lock_thread = thread;
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mutex->current_thread = Kernel::g_handle_table.Get<Thread>(thread);
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}
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/**
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@ -132,6 +134,7 @@ Mutex* CreateMutex(Handle& handle, bool initial_locked, const std::string& name)
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mutex->locked = mutex->initial_locked = initial_locked;
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mutex->name = name;
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mutex->current_thread = nullptr;
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// Acquire mutex with current thread if initialized as locked...
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if (mutex->locked) {
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@ -157,7 +160,7 @@ Handle CreateMutex(bool initial_locked, const std::string& name) {
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}
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ResultVal<bool> Mutex::Wait() {
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return MakeResult<bool>(locked);
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return MakeResult<bool>(locked && (current_thread != GetCurrentThread()));
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}
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ResultVal<bool> Mutex::Acquire() {
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