alexpete
112 lines
3.6 KiB
C++
112 lines
3.6 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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#pragma once
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#include "StandardHeaders.h"
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#include <AzCore/std/containers/unordered_map.h>
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#include <AzCore/std/containers/vector.h>
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#include <AzCore/std/string/string.h>
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#include <AzCore/Serialization/SerializeContext.h>
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#include "MultiThreadManager.h"
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namespace AZ
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{
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class ReflectContext;
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}
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namespace MCore
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{
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class MCORE_API StringIdPool
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{
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friend class Initializer;
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friend class MCoreSystem;
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public:
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/**
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* Generate a unique id for the given string which contains the object name.
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* This method is not thread safe.
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* @param objectName The name of the node to generate an id for.
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* @return The unique id of the given object.
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*/
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AZ::u32 GenerateIdForStringWithoutLock(const AZStd::string& objectName);
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/**
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* Generate a unique id for the given string which contains the object name.
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* This method is thread safe.
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* @param objectName The name of the node to generate an id for.
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* @return The unique id of the given object.
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*/
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AZ::u32 GenerateIdForString(const AZStd::string& objectName);
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/**
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* Return the name of the given id.
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* @param id The unique id to search for the name.
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* @return The name of the given object.
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*/
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const AZStd::string& GetName(uint32 id);
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/**
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* Return the name of the given id.
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* @param id The unique id to search for the name.
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* @return The name of the given object.
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*/
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const AZStd::string& GetStringById(AZ::u32 id);
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/**
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* Reserve space for a given amount of strings.
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* @param numStrings The number of strings to reserve space for.
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*/
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void Reserve(size_t numStrings);
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void Log(bool includeEntries = true);
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void Clear();
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void Lock();
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void Unlock();
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private:
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AZStd::vector<AZStd::string*> mStrings;
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AZStd::unordered_map<AZStd::string, AZ::u32> mStringToIndex; /**< The string to index table, where the index maps into mNames array and is directly the ID. */
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Mutex mMutex; /**< The multithread lock. */
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StringIdPool();
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~StringIdPool();
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};
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/**
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* The StringIdPoolIndex is a helper class to aid with serialization of
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* class members that store indexes into the StringIdPool. Members of this
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* type will serialize to a string, and deserialize to a uint32, while
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* allowing the StringIdPool to deduplicate the strings.
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*/
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struct StringIdPoolIndex
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{
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AZ::u32 m_index;
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StringIdPoolIndex() : m_index(0) {}
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StringIdPoolIndex(uint32 index) : m_index(index) {}
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operator uint32() const { return m_index; }
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bool operator==(uint32 rhs) const { return m_index == rhs; }
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static void Reflect(AZ::ReflectContext* context);
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};
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} // namespace MCore
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namespace AZ
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{
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AZ_TYPE_INFO_SPECIALIZE(MCore::StringIdPoolIndex, "{C374F051-8323-49DB-A1BD-C6B6CF0333C0}")
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}
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