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Diffstat (limited to '')
-rw-r--r-- | src/core/hle/kernel/object.h | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/src/core/hle/kernel/object.h b/src/core/hle/kernel/object.h new file mode 100644 index 000000000..83df68dfd --- /dev/null +++ b/src/core/hle/kernel/object.h @@ -0,0 +1,100 @@ +// Copyright 2018 Citra Emulator Project +// Licensed under GPLv2 or any later version +// Refer to the license.txt file included. + +#pragma once + +#include <string> +#include <utility> + +#include <boost/smart_ptr/intrusive_ptr.hpp> + +#include "common/common_types.h" + +namespace Kernel { + +using Handle = u32; + +enum class HandleType : u32 { + Unknown, + Event, + SharedMemory, + Thread, + Process, + AddressArbiter, + Timer, + ResourceLimit, + CodeSet, + ClientPort, + ServerPort, + ClientSession, + ServerSession, +}; + +enum class ResetType { + OneShot, + Sticky, + Pulse, +}; + +class Object : NonCopyable { +public: + virtual ~Object(); + + /// Returns a unique identifier for the object. For debugging purposes only. + unsigned int GetObjectId() const { + return object_id; + } + + virtual std::string GetTypeName() const { + return "[BAD KERNEL OBJECT TYPE]"; + } + virtual std::string GetName() const { + return "[UNKNOWN KERNEL OBJECT]"; + } + virtual HandleType GetHandleType() const = 0; + + /** + * Check if a thread can wait on the object + * @return True if a thread can wait on the object, otherwise false + */ + bool IsWaitable() const; + +public: + static unsigned int next_object_id; + +private: + friend void intrusive_ptr_add_ref(Object*); + friend void intrusive_ptr_release(Object*); + + unsigned int ref_count = 0; + unsigned int object_id = next_object_id++; +}; + +// Special functions used by boost::instrusive_ptr to do automatic ref-counting +inline void intrusive_ptr_add_ref(Object* object) { + ++object->ref_count; +} + +inline void intrusive_ptr_release(Object* object) { + if (--object->ref_count == 0) { + delete object; + } +} + +template <typename T> +using SharedPtr = boost::intrusive_ptr<T>; + +/** + * Attempts to downcast the given Object pointer to a pointer to T. + * @return Derived pointer to the object, or `nullptr` if `object` isn't of type T. + */ +template <typename T> +inline SharedPtr<T> DynamicObjectCast(SharedPtr<Object> object) { + if (object != nullptr && object->GetHandleType() == T::HANDLE_TYPE) { + return boost::static_pointer_cast<T>(std::move(object)); + } + return nullptr; +} + +} // namespace Kernel |