mirror of https://git.suyu.dev/suyu/suyu
kernel: Rename Semaphore to ConditionVariable.
bunnei
parent
9fcd2bf672
commit
4236799832
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// 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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#include "common/assert.h"
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#include "core/hle/kernel/condition_variable.h"
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#include "core/hle/kernel/errors.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/object_address_table.h"
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#include "core/hle/kernel/thread.h"
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namespace Kernel {
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ConditionVariable::ConditionVariable() {}
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ConditionVariable::~ConditionVariable() {}
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ResultVal<SharedPtr<ConditionVariable>> ConditionVariable::Create(VAddr guest_addr,
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VAddr mutex_addr,
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std::string name) {
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SharedPtr<ConditionVariable> condition_variable(new ConditionVariable);
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condition_variable->name = std::move(name);
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condition_variable->guest_addr = guest_addr;
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condition_variable->mutex_addr = mutex_addr;
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// Condition variables are referenced by guest address, so track this in the kernel
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g_object_address_table.Insert(guest_addr, condition_variable);
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return MakeResult<SharedPtr<ConditionVariable>>(std::move(condition_variable));
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}
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bool ConditionVariable::ShouldWait(Thread* thread) const {
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return GetAvailableCount() <= 0;
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}
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void ConditionVariable::Acquire(Thread* thread) {
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if (GetAvailableCount() <= 0)
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return;
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SetAvailableCount(GetAvailableCount() - 1);
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}
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ResultCode ConditionVariable::Release(s32 target) {
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if (target == -1) {
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// When -1, wake up all waiting threads
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SetAvailableCount(GetWaitingThreads().size());
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WakeupAllWaitingThreads();
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} else {
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// Otherwise, wake up just a single thread
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SetAvailableCount(target);
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WakeupWaitingThread(GetHighestPriorityReadyThread());
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}
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return RESULT_SUCCESS;
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}
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s32 ConditionVariable::GetAvailableCount() const {
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return Memory::Read32(guest_addr);
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}
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void ConditionVariable::SetAvailableCount(s32 value) const {
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Memory::Write32(guest_addr, value);
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}
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} // namespace Kernel
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@ -0,0 +1,65 @@
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// 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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@ -1,64 +0,0 @@
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// 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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#include "common/assert.h"
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#include "core/hle/kernel/errors.h"
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#include "core/hle/kernel/kernel.h"
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#include "core/hle/kernel/object_address_table.h"
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#include "core/hle/kernel/semaphore.h"
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#include "core/hle/kernel/thread.h"
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namespace Kernel {
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Semaphore::Semaphore() {}
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Semaphore::~Semaphore() {}
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ResultVal<SharedPtr<Semaphore>> Semaphore::Create(VAddr guest_addr, VAddr mutex_addr,
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std::string name) {
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SharedPtr<Semaphore> semaphore(new Semaphore);
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semaphore->name = std::move(name);
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semaphore->guest_addr = guest_addr;
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semaphore->mutex_addr = mutex_addr;
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// Semaphores are referenced by guest address, so track this in the kernel
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g_object_address_table.Insert(guest_addr, semaphore);
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return MakeResult<SharedPtr<Semaphore>>(std::move(semaphore));
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}
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bool Semaphore::ShouldWait(Thread* thread) const {
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return GetAvailableCount() <= 0;
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}
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void Semaphore::Acquire(Thread* thread) {
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if (GetAvailableCount() <= 0)
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return;
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SetAvailableCount(GetAvailableCount() - 1);
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}
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ResultCode Semaphore::Release(s32 target) {
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if (target == -1) {
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// When -1, wake up all waiting threads
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SetAvailableCount(GetWaitingThreads().size());
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WakeupAllWaitingThreads();
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} else {
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// Otherwise, wake up just a single thread
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SetAvailableCount(target);
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WakeupWaitingThread(GetHighestPriorityReadyThread());
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}
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return RESULT_SUCCESS;
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}
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s32 Semaphore::GetAvailableCount() const {
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return Memory::Read32(guest_addr);
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}
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void Semaphore::SetAvailableCount(s32 value) const {
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Memory::Write32(guest_addr, value);
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}
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} // namespace Kernel
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@ -1,66 +0,0 @@
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// 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 <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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// TODO(Subv): This is actually a Condition Variable.
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class Semaphore final : public WaitObject {
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public:
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/**
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* Creates a semaphore.
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* @param guest_addr Address of the object tracking the semaphore in guest memory. If specified,
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* this semaphore 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 semaphore, used by
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* the OS for implementing events.
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* @param name Optional name of semaphore.
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* @return The created semaphore.
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*/
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static ResultVal<SharedPtr<Semaphore>> 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 "Semaphore";
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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::Semaphore;
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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 semaphore (optional)
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VAddr guest_addr; ///< Address of the guest semaphore value
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VAddr mutex_addr; ///< (optional) Address of guest mutex value associated with this semaphore,
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///< 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 semaphore.
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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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Semaphore();
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~Semaphore() override;
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};
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} // namespace Kernel
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