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65 lines
2.2 KiB
C++
65 lines
2.2 KiB
C++
// Copyright 2018 yuzu emulator team
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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 <queue>
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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 ConditionVariable final : public WaitObject {
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public:
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/**
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* Creates a condition variable.
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* @param guest_addr Address of the object tracking the condition variable in guest memory. If
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* specified, this condition variable will update the guest object when its state changes.
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* @param mutex_addr Optional address of a guest mutex associated with this condition variable,
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* used by the OS for implementing events.
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* @param name Optional name of condition variable.
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* @return The created condition variable.
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*/
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static ResultVal<SharedPtr<ConditionVariable>> Create(VAddr guest_addr, VAddr mutex_addr = 0,
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std::string name = "Unknown");
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std::string GetTypeName() const override {
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return "ConditionVariable";
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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 const HandleType HANDLE_TYPE = HandleType::ConditionVariable;
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HandleType GetHandleType() const override {
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return HANDLE_TYPE;
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}
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s32 GetAvailableCount() const;
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void SetAvailableCount(s32 value) const;
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std::string name; ///< Name of condition variable (optional)
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VAddr guest_addr; ///< Address of the guest condition variable value
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VAddr mutex_addr; ///< (optional) Address of guest mutex value associated with this condition
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///< variable, used for implementing events
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bool ShouldWait(Thread* thread) const override;
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void Acquire(Thread* thread) override;
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/**
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* Releases a slot from a condition variable.
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* @param target The number of threads to wakeup, -1 is all.
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* @return ResultCode indicating if the operation succeeded.
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*/
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ResultCode Release(s32 target);
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private:
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ConditionVariable();
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~ConditionVariable() override;
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};
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} // namespace Kernel
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