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https://github.com/azahar-emu/azahar
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c4c644b285
Some objects declare their handle type as const, while others declare it as constexpr. This makes the const ones constexpr for consistency, and prevent unexpected compilation errors if these happen to be attempted to be used within a constexpr context.
70 lines
1.8 KiB
C++
70 lines
1.8 KiB
C++
// Copyright 2014 Citra Emulator Project
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#pragma once
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#include <memory>
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#include <string>
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#include "common/common_types.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/wait_object.h"
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#include "core/hle/result.h"
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namespace Kernel {
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class Thread;
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class Mutex final : public WaitObject {
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public:
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explicit Mutex(KernelSystem& kernel);
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~Mutex() override;
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std::string GetTypeName() const override {
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return "Mutex";
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}
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std::string GetName() const override {
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return name;
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}
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static constexpr HandleType HANDLE_TYPE = HandleType::Mutex;
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HandleType GetHandleType() const override {
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return HANDLE_TYPE;
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}
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int lock_count; ///< Number of times the mutex has been acquired
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u32 priority; ///< The priority of the mutex, used for priority inheritance.
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std::string name; ///< Name of mutex (optional)
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std::shared_ptr<Thread> holding_thread; ///< Thread that has acquired the mutex
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/**
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* Elevate the mutex priority to the best priority
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* among the priorities of all its waiting threads.
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*/
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void UpdatePriority();
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bool ShouldWait(Thread* thread) const override;
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void Acquire(Thread* thread) override;
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void AddWaitingThread(std::shared_ptr<Thread> thread) override;
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void RemoveWaitingThread(Thread* thread) override;
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/**
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* Attempts to release the mutex from the specified thread.
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* @param thread Thread that wants to release the mutex.
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* @returns The result code of the operation.
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*/
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ResultCode Release(Thread* thread);
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private:
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KernelSystem& kernel;
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};
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/**
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* Releases all the mutexes held by the specified thread
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* @param thread Thread that is holding the mutexes
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*/
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void ReleaseThreadMutexes(Thread* thread);
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} // namespace Kernel
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