122 lines
3.9 KiB
C++
122 lines
3.9 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2020 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#ifndef XENIA_KERNEL_UTIL_OBJECT_TABLE_H_
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#define XENIA_KERNEL_UTIL_OBJECT_TABLE_H_
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#include <string>
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#include <unordered_map>
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#include <vector>
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#include "xenia/base/mutex.h"
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#include "xenia/base/string_key.h"
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#include "xenia/kernel/xobject.h"
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#include "xenia/xbox.h"
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namespace xe {
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class ByteStream;
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} // namespace xe
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namespace xe {
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namespace kernel {
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namespace util {
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class ObjectTable {
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public:
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ObjectTable();
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~ObjectTable();
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void Reset();
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X_STATUS AddHandle(XObject* object, X_HANDLE* out_handle);
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X_STATUS DuplicateHandle(X_HANDLE orig, X_HANDLE* out_handle);
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X_STATUS RetainHandle(X_HANDLE handle);
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X_STATUS ReleaseHandle(X_HANDLE handle);
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X_STATUS ReleaseHandleInLock(X_HANDLE handle);
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X_STATUS RemoveHandle(X_HANDLE handle);
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bool Save(ByteStream* stream);
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bool Restore(ByteStream* stream);
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// Restores a XObject reference with a handle. Mainly for internal use - do
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// not use.
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X_STATUS RestoreHandle(X_HANDLE handle, XObject* object);
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template <typename T>
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object_ref<T> LookupObject(X_HANDLE handle, bool already_locked = false) {
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auto object = LookupObject(handle, already_locked);
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if (object) {
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assert_true(object->type() == T::kObjectType);
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}
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auto result = object_ref<T>(reinterpret_cast<T*>(object));
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return result;
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}
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X_STATUS AddNameMapping(const std::string_view name, X_HANDLE handle);
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void RemoveNameMapping(const std::string_view name);
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X_STATUS GetObjectByName(const std::string_view name, X_HANDLE* out_handle);
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template <typename T>
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std::vector<object_ref<T>> GetObjectsByType(XObject::Type type) {
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std::vector<object_ref<T>> results;
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GetObjectsByType(
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type, reinterpret_cast<std::vector<object_ref<XObject>>*>(&results));
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return results;
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}
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template <typename T>
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std::vector<object_ref<T>> GetObjectsByType() {
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std::vector<object_ref<T>> results;
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GetObjectsByType(
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T::kObjectType,
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reinterpret_cast<std::vector<object_ref<XObject>>*>(&results));
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return results;
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}
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std::vector<object_ref<XObject>> GetAllObjects();
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void PurgeAllObjects(); // Purges the object table of all guest objects
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private:
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struct ObjectTableEntry {
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int handle_ref_count = 0;
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XObject* object = nullptr;
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};
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ObjectTableEntry* LookupTableInLock(X_HANDLE handle);
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ObjectTableEntry* LookupTable(X_HANDLE handle);
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XObject* LookupObject(X_HANDLE handle, bool already_locked);
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void GetObjectsByType(XObject::Type type,
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std::vector<object_ref<XObject>>* results);
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X_HANDLE TranslateHandle(X_HANDLE handle);
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static constexpr uint32_t GetHandleSlot(X_HANDLE handle, bool host) {
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handle &= host ? ~XObject::kHandleHostBase : ~XObject::kHandleBase;
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return handle >> 2;
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}
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X_STATUS FindFreeSlot(uint32_t* out_slot, bool host);
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bool Resize(uint32_t new_capacity, bool host);
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xe::global_critical_region global_critical_region_;
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uint32_t table_capacity_ = 0;
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uint32_t host_table_capacity_ = 0;
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ObjectTableEntry* table_ = nullptr;
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ObjectTableEntry* host_table_ = nullptr;
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uint32_t last_free_entry_ = 0;
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uint32_t last_free_host_entry_ = 0;
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std::unordered_map<string_key_case, X_HANDLE> name_table_;
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};
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// Generic lookup
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template <>
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object_ref<XObject> ObjectTable::LookupObject<XObject>(X_HANDLE handle,
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bool already_locked);
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} // namespace util
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} // namespace kernel
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} // namespace xe
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#endif // XENIA_KERNEL_UTIL_OBJECT_TABLE_H_
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