09a263e607
git-subtree-dir: deps/memkind/src git-subtree-split: bb9f19dd1b3ed6cc5e1b35919564ccf6f4b32f69
77 lines
2.6 KiB
C++
77 lines
2.6 KiB
C++
/*
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* Copyright (C) 2017 - 2018 Intel Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice(s),
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice(s),
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER(S) ``AS IS'' AND ANY EXPRESS
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* OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
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* EVENT SHALL THE COPYRIGHT HOLDER(S) BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "memory_manager.h"
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#include <vector>
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#include <random>
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class RandomSizesAllocator
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{
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private:
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std::vector<MemoryManager> allocated_memory;
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memkind_t kind;
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std::default_random_engine generator;
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std::uniform_int_distribution<int> memory_distribution;
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size_t get_random_size()
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{
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return memory_distribution(generator);
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}
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public:
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RandomSizesAllocator(memkind_t kind, size_t min_size, size_t max_size,
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int max_allocations_number) :
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kind(kind),
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memory_distribution(min_size, max_size)
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{
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allocated_memory.reserve(max_allocations_number);
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}
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size_t malloc_random_memory()
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{
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size_t size = get_random_size();
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allocated_memory.emplace_back(kind, size);
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return size;
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}
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size_t free_random_memory()
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{
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if (empty())
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return 0;
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std::uniform_int_distribution<int> distribution(0, allocated_memory.size() - 1);
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int random_index = distribution(generator);
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auto it = std::begin(allocated_memory) + random_index;
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size_t size = it->size();
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allocated_memory.erase(it);
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return size;
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}
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bool empty()
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{
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return allocated_memory.empty();
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}
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};
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