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285 lines
9.0 KiB
C++
285 lines
9.0 KiB
C++
///\file
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/******************************************************************************
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The MIT License(MIT)
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Embedded Template Library.
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https://github.com/ETLCPP/etl
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https://www.etlcpp.com
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Copyright(c) 2020 jwellbelove
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files(the "Software"), to deal
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in the Software without restriction, including without limitation the rights
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to use, copy, modify, merge, publish, distribute, sublicense, and / or sell
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copies of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions :
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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******************************************************************************/
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#ifndef ETL_MESSAGE_POOL_INCLUDED
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#define ETL_MESSAGE_POOL_INCLUDED
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#include "platform.h"
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#include "message.h"
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#include "static_assert.h"
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#include "error_handler.h"
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#include "utility.h"
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#include "memory.h"
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#define ETL_FILE "99"
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namespace etl
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{
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//***************************************************************************
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///
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//***************************************************************************
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class message_pool_allocation_exception : public etl::exception
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{
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public:
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message_pool_allocation_exception(string_type reason_, string_type file_name_, numeric_type line_number_)
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: exception(reason_, file_name_, line_number_)
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{
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}
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};
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//***************************************************************************
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///
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//***************************************************************************
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class message_pool_allocation_failure : etl::message_pool_allocation_exception
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{
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public:
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message_pool_allocation_failure(string_type file_name_, numeric_type line_number_)
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: message_pool_allocation_exception(ETL_ERROR_TEXT("message_pool:allocation failure", ETL_FILE"A"), file_name_, line_number_)
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{
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}
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};
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//***************************************************************************
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///
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//***************************************************************************
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class message_pool
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{
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public:
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//*************************************************************************
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/// Constructor
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//*************************************************************************
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message_pool(imemory_block_pool& memory_block_pool_)
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: memory_block_pool(memory_block_pool_)
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{
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}
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#if ETL_CPP11_SUPPORTED && !defined(ETL_MESSAGE_POOL_FORCE_CPP03)
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//*************************************************************************
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/// Create a message from the pool.
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//*************************************************************************
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template <typename TMessage, typename... TArgs>
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TMessage* create(TArgs&&... args)
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{
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ETL_STATIC_ASSERT((etl::is_base_of<etl::imessage, TMessage>::value), "Not a message type");
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void* p = ETL_NULLPTR;
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if (sizeof(TMessage) <= memory_block_pool.get_memory_block_size())
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{
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p = memory_block_pool.allocate_memory_block(sizeof(TMessage));
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if (p != ETL_NULLPTR)
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{
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::new(p) TMessage(etl::forward<TArgs>(args)...);
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}
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else
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{
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ETL_ALWAYS_ASSERT(ETL_ERROR(etl::message_pool_allocation_failure));
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}
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}
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return reinterpret_cast<TMessage*>(p);
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}
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#else
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//*************************************************************************
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/// Create a message from the pool. No parameters.
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//*************************************************************************
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template <typename TMessage>
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TMessage* create()
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{
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ETL_STATIC_ASSERT((etl::is_base_of<etl::imessage, TMessage>::value), "Not a message type");
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void* p = ETL_NULLPTR;
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if (sizeof(TMessage) <= memory_block_pool.get_memory_block_size())
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{
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p = memory_block_pool.allocate_memory_block(sizeof(TMessage));
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if (p != ETL_NULLPTR)
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{
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::new(p) TMessage();
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}
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else
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{
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ETL_ALWAYS_ASSERT(ETL_ERROR(etl::message_pool_allocation_failure));
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}
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}
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return reinterpret_cast<TMessage*>(p);
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}
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//*************************************************************************
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/// Create a message from the pool. One parameter.
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//*************************************************************************
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template <typename TMessage, typename T1>
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TMessage* create(const T1& t1)
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{
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ETL_STATIC_ASSERT(etl::is_base_of<etl::imessage, TMessage>::value, "Not a message type");
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void* p = ETL_NULLPTR;
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if (sizeof(TMessage) <= memory_block_pool.get_memory_block_size())
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{
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p = memory_block_pool.allocate_memory_block(sizeof(TMessage));
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if (p != ETL_NULLPTR)
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{
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::new(p) TMessage(t1);
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}
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else
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{
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ETL_ALWAYS_ASSERT(ETL_ERROR(etl::message_pool_allocation_failure));
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}
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}
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return reinterpret_cast<TMessage*>(p);
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}
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//*************************************************************************
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/// Create a message from the pool. Two parameters.
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//*************************************************************************
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template <typename TMessage, typename T1, typename T2>
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TMessage* create(const T1& t1, const T2& t2)
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{
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ETL_STATIC_ASSERT(etl::is_base_of<etl::imessage, TMessage>::value, "Not a message type");
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void* p = ETL_NULLPTR;
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if (sizeof(TMessage) <= memory_block_pool.get_memory_block_size())
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{
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p = memory_block_pool.allocate_memory_block(sizeof(TMessage));
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if (p != ETL_NULLPTR)
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{
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::new(p) TMessage(t1, t2);
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}
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else
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{
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ETL_ALWAYS_ASSERT(ETL_ERROR(etl::message_pool_allocation_failure));
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}
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}
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return reinterpret_cast<TMessage*>(p);
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}
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//*************************************************************************
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/// Create a message from the pool. Three parameters.
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//*************************************************************************
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template <typename TMessage, typename T1, typename T2, typename T3>
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TMessage* create(const T1& t1, const T2& t2, const T3& t3)
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{
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ETL_STATIC_ASSERT(etl::is_base_of<etl::imessage, TMessage>::value, "Not a message type");
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void* p = ETL_NULLPTR;
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if (sizeof(TMessage) <= memory_block_pool.get_memory_block_size())
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{
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p = memory_block_pool.allocate_memory_block(sizeof(TMessage));
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if (p != ETL_NULLPTR)
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{
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::new(p) TMessage(t1, t2, t3);
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}
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else
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{
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ETL_ALWAYS_ASSERT(ETL_ERROR(etl::message_pool_allocation_failure));
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}
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}
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return reinterpret_cast<TMessage*>(p);
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}
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//*************************************************************************
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/// Create a message from the pool. Four parameters.
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//*************************************************************************
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template <typename TMessage, typename T1, typename T2, typename T3, typename T4>
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TMessage* create(const T1& t1, const T2& t2, const T3& t3, const T4& t4)
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{
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ETL_STATIC_ASSERT(etl::is_base_of<etl::imessage, TMessage>::value, "Not a message type");
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void* p = ETL_NULLPTR;
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if (sizeof(TMessage) <= memory_block_pool.get_memory_block_size())
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{
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p = memory_block_pool.allocate_memory_block(sizeof(TMessage));
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if (p != ETL_NULLPTR)
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{
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::new(p) TMessage(t1, t2, t3, t4);
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}
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else
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{
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ETL_ALWAYS_ASSERT(ETL_ERROR(etl::message_pool_allocation_failure));
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}
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}
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return reinterpret_cast<TMessage*>(p)
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}
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#endif
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//*************************************************************************
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/// Destruct a message and send it back to the pool.
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//*************************************************************************
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void destroy(const etl::imessage* const pmsg)
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{
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if (pmsg != ETL_NULLPTR)
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{
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pmsg->~imessage();
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memory_block_pool.release_memory_block(pmsg);
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}
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}
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//*************************************************************************
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/// Destruct a message and send it back to the pool.
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//*************************************************************************
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void destroy(const etl::imessage& msg)
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{
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destroy(&msg);
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}
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private:
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/// The raw memory block pool.
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imemory_block_pool& memory_block_pool;
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// Should not be copied.
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message_pool(const message_pool&) ETL_DELETE;
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message_pool& operator =(const message_pool&) ETL_DELETE;
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};
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}
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#undef ETL_FILE
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#endif
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