414cc1eb1f
A holdover from citra, the Horizon kernel on the switch has no prominent kernel object that functions as a timer. At least not to the degree of sophistication that this class provided. As such, this can be removed entirely. This class also wasn't used at all in any meaningful way within the core, so this was just code sitting around doing nothing. This also allows removing a few things from the main KernelCore class that allows it to use slightly less resources overall (though very minor and not anything really noticeable).
103 lines
2.4 KiB
C++
103 lines
2.4 KiB
C++
// Copyright 2018 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 <atomic>
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#include <string>
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#include <boost/smart_ptr/intrusive_ptr.hpp>
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#include "common/common_types.h"
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namespace Kernel {
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class KernelCore;
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using Handle = u32;
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enum class HandleType : u32 {
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Unknown,
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WritableEvent,
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ReadableEvent,
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SharedMemory,
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Thread,
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Process,
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AddressArbiter,
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ResourceLimit,
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ClientPort,
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ServerPort,
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ClientSession,
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ServerSession,
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};
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enum class ResetType {
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OneShot, ///< Reset automatically on object acquisition
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Sticky, ///< Never reset automatically
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};
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class Object : NonCopyable {
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public:
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explicit Object(KernelCore& kernel);
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virtual ~Object();
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/// Returns a unique identifier for the object. For debugging purposes only.
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u32 GetObjectId() const {
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return object_id.load(std::memory_order_relaxed);
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}
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virtual std::string GetTypeName() const {
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return "[BAD KERNEL OBJECT TYPE]";
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}
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virtual std::string GetName() const {
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return "[UNKNOWN KERNEL OBJECT]";
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}
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virtual HandleType GetHandleType() const = 0;
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/**
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* Check if a thread can wait on the object
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* @return True if a thread can wait on the object, otherwise false
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*/
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bool IsWaitable() const;
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protected:
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/// The kernel instance this object was created under.
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KernelCore& kernel;
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private:
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friend void intrusive_ptr_add_ref(Object*);
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friend void intrusive_ptr_release(Object*);
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std::atomic<u32> ref_count{0};
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std::atomic<u32> object_id{0};
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};
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// Special functions used by boost::instrusive_ptr to do automatic ref-counting
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inline void intrusive_ptr_add_ref(Object* object) {
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object->ref_count.fetch_add(1, std::memory_order_relaxed);
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}
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inline void intrusive_ptr_release(Object* object) {
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if (object->ref_count.fetch_sub(1, std::memory_order_acq_rel) == 1) {
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delete object;
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}
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}
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template <typename T>
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using SharedPtr = boost::intrusive_ptr<T>;
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/**
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* Attempts to downcast the given Object pointer to a pointer to T.
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* @return Derived pointer to the object, or `nullptr` if `object` isn't of type T.
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*/
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template <typename T>
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inline SharedPtr<T> DynamicObjectCast(SharedPtr<Object> object) {
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if (object != nullptr && object->GetHandleType() == T::HANDLE_TYPE) {
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return boost::static_pointer_cast<T>(object);
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}
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return nullptr;
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}
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} // namespace Kernel
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