mirror of
https://github.com/RPCS3/rpcs3.git
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777 lines
18 KiB
C++
777 lines
18 KiB
C++
#pragma once
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#include "Utilities/types.h"
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#include "Utilities/mutex.h"
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#include <memory>
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#include <vector>
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// Helper namespace
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namespace id_manager
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{
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// Common global mutex
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extern shared_mutex g_mutex;
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// ID traits
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template <typename T, typename = void>
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struct id_traits
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{
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static_assert(sizeof(T) == 0, "ID object must specify: id_base, id_step, id_count");
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static const u32 base = 1; // First ID (N = 0)
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static const u32 step = 1; // Any ID: N * id_step + id_base
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static const u32 count = 65535; // Limit: N < id_count
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static const u32 invalid = 0;
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};
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template <typename T>
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struct id_traits<T, std::void_t<decltype(&T::id_base), decltype(&T::id_step), decltype(&T::id_count)>>
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{
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static const u32 base = T::id_base;
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static const u32 step = T::id_step;
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static const u32 count = T::id_count;
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static const u32 invalid = base > 0 ? 0 : -1;
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static_assert(u64{step} * count + base < UINT32_MAX, "ID traits: invalid object range");
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};
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// Correct usage testing
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template <typename T, typename T2, typename = void>
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struct id_verify : std::integral_constant<bool, std::is_base_of<T, T2>::value>
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{
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// If common case, T2 shall be derived from or equal to T
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};
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template <typename T, typename T2>
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struct id_verify<T, T2, std::void_t<typename T2::id_type>> : std::integral_constant<bool, std::is_same<T, typename T2::id_type>::value>
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{
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// If T2 contains id_type type, T must be equal to it
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};
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class typeinfo
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{
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// Global variable for each registered type
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template <typename T>
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struct registered
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{
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static const u32 index;
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};
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// Increment type counter
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static u32 add_type(u32 i)
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{
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static atomic_t<u32> g_next{0};
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return g_next.fetch_add(i);
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}
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public:
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// Get type index
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template <typename T>
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static inline u32 get_index()
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{
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return registered<T>::index;
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}
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// Get type count
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static inline u32 get_count()
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{
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return add_type(0);
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}
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};
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template <typename T>
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const u32 typeinfo::registered<T>::index = typeinfo::add_type(1);
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// ID value with additional type stored
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class id_key
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{
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u32 m_value; // ID value
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u32 m_type; // True object type
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public:
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id_key() = default;
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id_key(u32 value, u32 type)
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: m_value(value)
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, m_type(type)
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{
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}
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u32 value() const
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{
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return m_value;
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}
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u32 type() const
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{
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return m_type;
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}
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operator u32() const
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{
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return m_value;
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}
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};
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using id_map = std::vector<std::pair<id_key, std::shared_ptr<void>>>;
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}
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// Object manager for emulated process. Multiple objects of specified arbitrary type are given unique IDs.
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class idm
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{
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// Last allocated ID for constructors
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static thread_local u32 g_id;
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// Type Index -> ID -> Object. Use global since only one process is supported atm.
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static std::vector<id_manager::id_map> g_map;
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template <typename T>
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static inline u32 get_type()
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{
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return id_manager::typeinfo::get_index<T>();
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}
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template <typename T>
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static constexpr u32 get_index(u32 id)
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{
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return (id - id_manager::id_traits<T>::base) / id_manager::id_traits<T>::step;
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}
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// Helper
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template <typename F>
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struct function_traits;
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template <typename F, typename R, typename A1, typename A2>
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struct function_traits<R (F::*)(A1, A2&) const>
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{
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using object_type = A2;
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using result_type = R;
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};
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template <typename F, typename R, typename A1, typename A2>
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struct function_traits<R (F::*)(A1, A2&)>
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{
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using object_type = A2;
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using result_type = R;
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};
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template <typename F, typename A1, typename A2>
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struct function_traits<void (F::*)(A1, A2&) const>
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{
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using object_type = A2;
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using void_type = void;
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};
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template <typename F, typename A1, typename A2>
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struct function_traits<void (F::*)(A1, A2&)>
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{
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using object_type = A2;
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using void_type = void;
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};
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// Helper type: pointer + return value propagated
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template <typename T, typename RT>
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struct return_pair
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{
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std::shared_ptr<T> ptr;
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RT ret;
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explicit operator bool() const
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{
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return ptr.operator bool();
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}
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T* operator->() const
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{
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return ptr.get();
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}
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};
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// Unsafe specialization (not refcounted)
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template <typename T, typename RT>
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struct return_pair<T*, RT>
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{
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T* ptr;
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RT ret;
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explicit operator bool() const
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{
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return ptr != nullptr;
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}
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T* operator->() const
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{
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return ptr;
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}
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};
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// Prepare new ID (returns nullptr if out of resources)
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static id_manager::id_map::pointer allocate_id(const id_manager::id_key& info, u32 base, u32 step, u32 count);
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// Find ID (additionally check type if types are not equal)
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template <typename T, typename Type>
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static id_manager::id_map::pointer find_id(u32 id)
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{
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static_assert(id_manager::id_verify<T, Type>::value, "Invalid ID type combination");
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const u32 index = get_index<Type>(id);
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auto& vec = g_map[get_type<T>()];
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if (index >= vec.size() || index >= id_manager::id_traits<Type>::count)
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{
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return nullptr;
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}
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auto& data = vec[index];
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if (data.second)
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{
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if (std::is_same<T, Type>::value || data.first.type() == get_type<Type>())
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{
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return &data;
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}
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}
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return nullptr;
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}
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// Allocate new ID and assign the object from the provider()
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template <typename T, typename Type, typename F>
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static id_manager::id_map::pointer create_id(F&& provider)
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{
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static_assert(id_manager::id_verify<T, Type>::value, "Invalid ID type combination");
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// ID info
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const id_manager::id_key info{get_type<T>(), get_type<Type>()};
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// ID traits
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using traits = id_manager::id_traits<Type>;
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// Allocate new id
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std::lock_guard lock(id_manager::g_mutex);
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if (auto* place = allocate_id(info, traits::base, traits::step, traits::count))
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{
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// Get object, store it
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place->second = provider();
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if (place->second)
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{
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return place;
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}
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}
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return nullptr;
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}
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public:
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// Initialize object manager
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static void init();
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// Remove all objects
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static void clear();
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// Get last ID (updated in create_id/allocate_id)
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static inline u32 last_id()
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{
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return g_id;
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}
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// Add a new ID of specified type with specified constructor arguments (returns object or nullptr)
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template <typename T, typename Make = T, typename... Args>
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static inline std::enable_if_t<std::is_constructible<Make, Args...>::value, std::shared_ptr<Make>> make_ptr(Args&&... args)
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{
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if (auto pair = create_id<T, Make>([&] { return std::make_shared<Make>(std::forward<Args>(args)...); }))
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{
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return {pair->second, static_cast<Make*>(pair->second.get())};
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}
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return nullptr;
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}
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// Add a new ID of specified type with specified constructor arguments (returns id)
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template <typename T, typename Make = T, typename... Args>
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static inline std::enable_if_t<std::is_constructible<Make, Args...>::value, u32> make(Args&&... args)
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{
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if (auto pair = create_id<T, Make>([&] { return std::make_shared<Make>(std::forward<Args>(args)...); }))
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{
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return pair->first;
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}
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return id_manager::id_traits<Make>::invalid;
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}
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// Add a new ID for an existing object provided (returns new id)
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template <typename T, typename Made = T>
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static inline u32 import_existing(const std::shared_ptr<T>& ptr)
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{
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if (auto pair = create_id<T, Made>([&] { return ptr; }))
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{
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return pair->first;
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}
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return id_manager::id_traits<Made>::invalid;
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}
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// Add a new ID for an object returned by provider()
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template <typename T, typename Made = T, typename F, typename = std::invoke_result_t<F>>
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static inline u32 import(F&& provider)
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{
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if (auto pair = create_id<T, Made>(std::forward<F>(provider)))
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{
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return pair->first;
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}
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return id_manager::id_traits<Made>::invalid;
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}
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// Access the ID record without locking (unsafe)
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template <typename T, typename Get = T>
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static inline id_manager::id_map::pointer find_unlocked(u32 id)
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{
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return find_id<T, Get>(id);
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}
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// Check the ID without locking (can be called from other method)
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template <typename T, typename Get = T>
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static inline Get* check_unlocked(u32 id)
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{
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if (const auto found = find_id<T, Get>(id))
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{
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return static_cast<Get*>(found->second.get());
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}
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return nullptr;
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}
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// Check the ID
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template <typename T, typename Get = T>
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static inline Get* check(u32 id)
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{
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reader_lock lock(id_manager::g_mutex);
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return check_unlocked<T, Get>(id);
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}
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// Check the ID, access object under shared lock
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template <typename T, typename Get = T, typename F, typename FRT = std::invoke_result_t<F, Get&>>
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static inline auto check(u32 id, F&& func)
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{
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reader_lock lock(id_manager::g_mutex);
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if (const auto ptr = check_unlocked<T, Get>(id))
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{
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if constexpr (!std::is_void_v<FRT>)
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{
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return return_pair<Get*, FRT>{ptr, func(*ptr)};
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}
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else
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{
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func(*ptr);
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return ptr;
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}
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}
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if constexpr (!std::is_void_v<FRT>)
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{
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return return_pair<Get*, FRT>{nullptr};
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}
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else
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{
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return static_cast<Get*>(nullptr);
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}
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}
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// Get the object without locking (can be called from other method)
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template <typename T, typename Get = T>
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static inline std::shared_ptr<Get> get_unlocked(u32 id)
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{
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const auto found = find_id<T, Get>(id);
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if (UNLIKELY(found == nullptr))
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{
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return nullptr;
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}
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return {found->second, static_cast<Get*>(found->second.get())};
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}
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// Get the object
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template <typename T, typename Get = T>
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static inline std::shared_ptr<Get> get(u32 id)
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{
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reader_lock lock(id_manager::g_mutex);
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const auto found = find_id<T, Get>(id);
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if (UNLIKELY(found == nullptr))
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{
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return nullptr;
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}
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return {found->second, static_cast<Get*>(found->second.get())};
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}
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// Get the object, access object under reader lock
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template <typename T, typename Get = T, typename F, typename FRT = std::invoke_result_t<F, Get&>>
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static inline std::conditional_t<std::is_void_v<FRT>, std::shared_ptr<Get>, return_pair<Get, FRT>> get(u32 id, F&& func)
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{
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reader_lock lock(id_manager::g_mutex);
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const auto found = find_id<T, Get>(id);
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if (UNLIKELY(found == nullptr))
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{
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return {nullptr};
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}
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const auto ptr = static_cast<Get*>(found->second.get());
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if constexpr (std::is_void_v<FRT>)
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{
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func(*ptr);
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return {found->second, ptr};
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}
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else
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{
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return {{found->second, ptr}, func(*ptr)};
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}
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}
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// Access all objects of specified type. Returns the number of objects processed.
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template <typename T, typename Get = T, typename F, typename FT = decltype(&std::decay_t<F>::operator()), typename FRT = typename function_traits<FT>::void_type>
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static inline u32 select(F&& func, int = 0)
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{
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static_assert(id_manager::id_verify<T, Get>::value, "Invalid ID type combination");
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reader_lock lock(id_manager::g_mutex);
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u32 result = 0;
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for (auto& id : g_map[get_type<T>()])
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{
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if (id.second)
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{
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if (std::is_same<T, Get>::value || id.first.type() == get_type<Get>())
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{
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func(id.first, *static_cast<typename function_traits<FT>::object_type*>(id.second.get()));
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result++;
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}
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}
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}
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return result;
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}
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// Access all objects of specified type. If function result evaluates to true, stop and return the object and the value.
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template <typename T, typename Get = T, typename F, typename FT = decltype(&std::decay_t<F>::operator()), typename FRT = typename function_traits<FT>::result_type>
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static inline auto select(F&& func)
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{
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static_assert(id_manager::id_verify<T, Get>::value, "Invalid ID type combination");
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using object_type = typename function_traits<FT>::object_type;
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using result_type = return_pair<object_type, FRT>;
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reader_lock lock(id_manager::g_mutex);
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for (auto& id : g_map[get_type<T>()])
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{
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if (auto ptr = static_cast<object_type*>(id.second.get()))
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{
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if (std::is_same<T, Get>::value || id.first.type() == get_type<Get>())
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{
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if (FRT result = func(id.first, *ptr))
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{
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return result_type{{id.second, ptr}, std::move(result)};
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}
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}
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}
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}
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return result_type{nullptr};
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}
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// Remove the ID
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template <typename T, typename Get = T>
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static inline bool remove(u32 id)
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{
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std::shared_ptr<void> ptr;
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{
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std::lock_guard lock(id_manager::g_mutex);
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if (const auto found = find_id<T, Get>(id))
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{
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ptr = std::move(found->second);
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}
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else
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{
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return false;
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}
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}
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return true;
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}
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// Remove the ID and return the object
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template <typename T, typename Get = T>
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static inline std::shared_ptr<Get> withdraw(u32 id)
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{
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std::shared_ptr<void> ptr;
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{
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std::lock_guard lock(id_manager::g_mutex);
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if (const auto found = find_id<T, Get>(id))
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{
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ptr = std::move(found->second);
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}
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else
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{
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return nullptr;
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}
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}
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return {ptr, static_cast<Get*>(ptr.get())};
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}
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// Remove the ID after accessing the object under writer lock, return the object and propagate return value
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template <typename T, typename Get = T, typename F, typename FRT = std::invoke_result_t<F, Get&>>
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static inline std::conditional_t<std::is_void_v<FRT>, std::shared_ptr<Get>, return_pair<Get, FRT>> withdraw(u32 id, F&& func)
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{
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std::unique_lock lock(id_manager::g_mutex);
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if (const auto found = find_id<T, Get>(id))
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{
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const auto _ptr = static_cast<Get*>(found->second.get());
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if constexpr (std::is_void_v<FRT>)
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{
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func(*_ptr);
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std::shared_ptr<void> ptr = std::move(found->second);
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return {ptr, static_cast<Get*>(ptr.get())};
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}
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else
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{
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FRT ret = func(*_ptr);
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if (ret)
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{
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// If return value evaluates to true, don't delete the object (error code)
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return {{found->second, _ptr}, std::move(ret)};
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}
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std::shared_ptr<void> ptr = std::move(found->second);
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return {{ptr, static_cast<Get*>(ptr.get())}, std::move(ret)};
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}
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}
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|
|
return {nullptr};
|
|
}
|
|
};
|
|
|
|
// Object manager for emulated process. One unique object per type, or zero.
|
|
class fxm
|
|
{
|
|
// Type Index -> Object. Use global since only one process is supported atm.
|
|
static std::vector<std::shared_ptr<void>> g_vec;
|
|
|
|
template <typename T>
|
|
static inline u32 get_type()
|
|
{
|
|
return id_manager::typeinfo::get_index<T>();
|
|
}
|
|
|
|
public:
|
|
// Initialize object manager
|
|
static void init();
|
|
|
|
// Remove all objects
|
|
static void clear();
|
|
|
|
// Create the object (returns nullptr if it already exists)
|
|
template <typename T, typename Make = T, typename... Args>
|
|
static std::enable_if_t<std::is_constructible<Make, Args...>::value, std::shared_ptr<T>> make(Args&&... args)
|
|
{
|
|
std::shared_ptr<T> ptr;
|
|
{
|
|
std::lock_guard lock(id_manager::g_mutex);
|
|
|
|
auto& cur = g_vec[get_type<T>()];
|
|
|
|
if (!cur)
|
|
{
|
|
ptr = std::make_shared<Make>(std::forward<Args>(args)...);
|
|
cur = ptr;
|
|
}
|
|
else
|
|
{
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
// Create the object unconditionally (old object will be removed if it exists)
|
|
template <typename T, typename Make = T, typename... Args>
|
|
static std::enable_if_t<std::is_constructible<Make, Args...>::value, std::shared_ptr<T>> make_always(Args&&... args)
|
|
{
|
|
std::shared_ptr<T> ptr;
|
|
std::shared_ptr<void> old;
|
|
{
|
|
std::lock_guard lock(id_manager::g_mutex);
|
|
|
|
auto& cur = g_vec[get_type<T>()];
|
|
|
|
ptr = std::make_shared<Make>(std::forward<Args>(args)...);
|
|
old = std::move(cur);
|
|
cur = ptr;
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
// Emplace the object returned by provider() and return it if no object exists
|
|
template <typename T, typename F, typename... Args>
|
|
static auto import(F&& provider, Args&&... args) -> decltype(static_cast<std::shared_ptr<T>>(provider(std::forward<Args>(args)...)))
|
|
{
|
|
std::shared_ptr<T> ptr;
|
|
{
|
|
std::lock_guard lock(id_manager::g_mutex);
|
|
|
|
auto& cur = g_vec[get_type<T>()];
|
|
|
|
if (!cur)
|
|
{
|
|
ptr = provider(std::forward<Args>(args)...);
|
|
|
|
if (ptr)
|
|
{
|
|
cur = ptr;
|
|
}
|
|
}
|
|
|
|
if (!ptr)
|
|
{
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
// Emplace the object return by provider() (old object will be removed if it exists)
|
|
template <typename T, typename F, typename... Args>
|
|
static auto import_always(F&& provider, Args&&... args) -> decltype(static_cast<std::shared_ptr<T>>(provider(std::forward<Args>(args)...)))
|
|
{
|
|
std::shared_ptr<T> ptr;
|
|
std::shared_ptr<void> old;
|
|
{
|
|
std::lock_guard lock(id_manager::g_mutex);
|
|
|
|
auto& cur = g_vec[get_type<T>()];
|
|
|
|
ptr = provider(std::forward<Args>(args)...);
|
|
|
|
if (ptr)
|
|
{
|
|
old = std::move(cur);
|
|
cur = ptr;
|
|
}
|
|
else
|
|
{
|
|
return nullptr;
|
|
}
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
// Get the object unconditionally (create an object if it doesn't exist)
|
|
template <typename T, typename Make = T, typename... Args>
|
|
static std::enable_if_t<std::is_constructible<Make, Args...>::value, std::shared_ptr<T>> get_always(Args&&... args)
|
|
{
|
|
std::shared_ptr<T> ptr;
|
|
{
|
|
std::lock_guard lock(id_manager::g_mutex);
|
|
|
|
auto& old = g_vec[get_type<T>()];
|
|
|
|
if (old)
|
|
{
|
|
return {old, static_cast<T*>(old.get())};
|
|
}
|
|
else
|
|
{
|
|
ptr = std::make_shared<Make>(std::forward<Args>(args)...);
|
|
old = ptr;
|
|
}
|
|
}
|
|
|
|
return ptr;
|
|
}
|
|
|
|
// Unsafe version of check(), can be used in some cases
|
|
template <typename T>
|
|
static inline T* check_unlocked()
|
|
{
|
|
return static_cast<T*>(g_vec[get_type<T>()].get());
|
|
}
|
|
|
|
// Check whether the object exists
|
|
template <typename T>
|
|
static inline T* check()
|
|
{
|
|
reader_lock lock(id_manager::g_mutex);
|
|
|
|
return check_unlocked<T>();
|
|
}
|
|
|
|
// Get the object (returns nullptr if it doesn't exist)
|
|
template <typename T>
|
|
static inline std::shared_ptr<T> get()
|
|
{
|
|
reader_lock lock(id_manager::g_mutex);
|
|
|
|
auto& ptr = g_vec[get_type<T>()];
|
|
|
|
return {ptr, static_cast<T*>(ptr.get())};
|
|
}
|
|
|
|
// Delete the object
|
|
template <typename T>
|
|
static inline bool remove()
|
|
{
|
|
std::shared_ptr<void> ptr;
|
|
{
|
|
std::lock_guard lock(id_manager::g_mutex);
|
|
ptr = std::move(g_vec[get_type<T>()]);
|
|
}
|
|
|
|
return ptr.operator bool();
|
|
}
|
|
|
|
// Delete the object and return it
|
|
template <typename T>
|
|
static inline std::shared_ptr<T> withdraw()
|
|
{
|
|
std::shared_ptr<void> ptr;
|
|
{
|
|
std::lock_guard lock(id_manager::g_mutex);
|
|
ptr = std::move(g_vec[get_type<T>()]);
|
|
}
|
|
|
|
return {ptr, static_cast<T*>(ptr.get())};
|
|
}
|
|
};
|
|
|
|
#include "Utilities/typemap.h"
|
|
|
|
extern utils::typemap g_typemap;
|
|
|
|
constexpr utils::typemap* g_idm = &g_typemap;
|
|
|
|
using utils::id_new;
|
|
using utils::id_any;
|
|
using utils::id_always;
|