f4c24d0832
boost::static_pointer_cast for boost::intrusive_ptr (what SharedPtr is), takes its parameter by const reference. Given that, it means that this std::move doesn't actually do anything other than obscure what the function's actual behavior is, so we can remove this. To clarify, this would only do something if the parameter was either taking its argument by value, by non-const ref, or by rvalue-reference.
105 lines
2.4 KiB
C++
105 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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Event,
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SharedMemory,
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Thread,
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Process,
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AddressArbiter,
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Timer,
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ResourceLimit,
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CodeSet,
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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,
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Sticky,
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Pulse,
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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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