mirror of
https://git.suyu.dev/suyu/suyu
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b0ab803ce8
- This does not actually seem to exist in the real kernel - games reset these automatically. # Conflicts: # src/core/hle/service/am/applets/applets.cpp # src/core/hle/service/filesystem/fsp_srv.cpp
97 lines
2.3 KiB
C++
97 lines
2.3 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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TransferMemory,
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Thread,
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Process,
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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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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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