Jonathan R. Madsen
086218c2eb
* Update LICENSE - fix inconsistencies * Revert lib/rocprofiler/counters/parser/scanner.cpp * Update lib/rocprofiler/counters/tests/dimension.cpp - revert ending curly brace * Revert missing curly braces - missing curly braces when file did not end with a new line
104 行
2.8 KiB
C++
104 行
2.8 KiB
C++
// MIT License
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//
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// Copyright (c) 2023 Advanced Micro Devices, Inc.
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//
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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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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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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
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// THE SOFTWARE.
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#pragma once
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#include "lib/common/defines.hpp"
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#include <cstddef>
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#include <cstdint>
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#include <cstdlib>
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#include <memory>
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#include <stack>
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#include <stdexcept>
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namespace rocprofiler
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{
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namespace common
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{
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namespace memory
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{
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template <size_t BlockSize, size_t ReservedBlocks = 0>
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class pool
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{
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public:
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explicit pool(size_t size)
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: m_size(size)
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{
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for(size_t i = 0; i < ReservedBlocks; i++)
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{
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append();
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}
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}
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void* allocate()
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{
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if(m_addrs.empty())
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{
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append();
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}
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auto* ptr = m_addrs.top();
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m_addrs.pop();
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return ptr;
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}
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void deallocate(void* ptr) { m_addrs.push(ptr); }
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void rebind(size_t size)
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{
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if(!(m_addrs.empty() && m_blocks.empty()))
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{
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throw std::runtime_error{"cannot call pool::rebind() after alloc"};
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::abort();
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}
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m_size = size;
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}
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private:
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// Refill the address stack by allocating another block of memory
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void append()
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{
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auto block = std::make_unique<uint8_t[]>(BlockSize);
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auto total_size = BlockSize % m_size == 0 ? BlockSize : BlockSize - m_size;
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// Divide the block into chunks of m_size bytes, and add their addrs
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for(size_t i = 0; i < total_size; i += m_size)
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{
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m_addrs.push(&block.get()[i]);
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}
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// Keep the memory of the block alive by adding it to our stack
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m_blocks.push(std::move(block));
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}
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private:
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size_t m_size = {};
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std::stack<void*> m_addrs = {};
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std::stack<std::unique_ptr<uint8_t[]>> m_blocks = {};
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};
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} // namespace memory
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} // namespace common
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} // namespace rocprofiler
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