94 lines
2.3 KiB
C++
94 lines
2.3 KiB
C++
/* XMRig
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* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
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* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
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* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
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* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
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* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
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* Copyright 2017-2018 XMR-Stak <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
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* Copyright 2018 Lee Clagett <https://github.com/vtnerd>
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* Copyright 2018-2019 SChernykh <https://github.com/SChernykh>
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* Copyright 2018-2019 tevador <tevador@gmail.com>
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* Copyright 2016-2019 XMRig <https://github.com/xmrig>, <support@xmrig.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "crypto/common/MemoryPool.h"
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#include "crypto/common/VirtualMemory.h"
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#include <cassert>
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namespace xmrig {
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constexpr size_t pageSize = 2 * 1024 * 1024;
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} // namespace xmrig
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xmrig::MemoryPool::MemoryPool(size_t size, bool hugePages, uint32_t node)
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{
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if (!size) {
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return;
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}
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m_memory = new VirtualMemory(size * pageSize, hugePages, false, false, node);
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}
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xmrig::MemoryPool::~MemoryPool()
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{
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delete m_memory;
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}
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bool xmrig::MemoryPool::isHugePages(uint32_t) const
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{
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return m_memory && m_memory->isHugePages();
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}
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uint8_t *xmrig::MemoryPool::get(size_t size, uint32_t)
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{
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assert(!(size % pageSize));
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if (!m_memory || (m_memory->size() - m_offset) < size) {
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return nullptr;
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}
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uint8_t *out = m_memory->scratchpad() + m_offset;
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m_offset += size;
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++m_refs;
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return out;
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}
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void xmrig::MemoryPool::release(uint32_t)
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{
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assert(m_refs > 0);
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if (m_refs > 0) {
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--m_refs;
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}
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if (m_refs == 0) {
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m_offset = 0;
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}
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}
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