mirror of
https://github.com/xmrig/xmrig.git
synced 2025-12-06 23:52:38 -05:00
92 lines
3.1 KiB
C++
92 lines
3.1 KiB
C++
/* XMRig
|
|
* Copyright 2010 Jeff Garzik <jgarzik@pobox.com>
|
|
* Copyright 2012-2014 pooler <pooler@litecoinpool.org>
|
|
* Copyright 2014 Lucas Jones <https://github.com/lucasjones>
|
|
* Copyright 2014-2016 Wolf9466 <https://github.com/OhGodAPet>
|
|
* Copyright 2016 Jay D Dee <jayddee246@gmail.com>
|
|
* Copyright 2017-2018 XMR-Stak <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
|
|
* Copyright 2018 Lee Clagett <https://github.com/vtnerd>
|
|
* Copyright 2018-2019 SChernykh <https://github.com/SChernykh>
|
|
* Copyright 2018-2019 tevador <tevador@gmail.com>
|
|
* Copyright 2016-2019 XMRig <https://github.com/xmrig>, <support@xmrig.com>
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef XMRIG_VIRTUALMEMORY_H
|
|
#define XMRIG_VIRTUALMEMORY_H
|
|
|
|
|
|
#include "base/tools/Object.h"
|
|
|
|
|
|
#include <cstddef>
|
|
#include <cstdint>
|
|
#include <utility>
|
|
|
|
|
|
namespace xmrig {
|
|
|
|
|
|
class VirtualMemory
|
|
{
|
|
public:
|
|
XMRIG_DISABLE_COPY_MOVE(VirtualMemory)
|
|
|
|
VirtualMemory() = default;
|
|
VirtualMemory(size_t size, bool hugePages = true, size_t align = 64);
|
|
~VirtualMemory();
|
|
|
|
inline bool isHugePages() const { return m_flags & HUGEPAGES; }
|
|
inline size_t size() const { return m_size; }
|
|
inline uint8_t *scratchpad() const { return m_scratchpad; }
|
|
|
|
inline std::pair<size_t, size_t> hugePages() const
|
|
{
|
|
return { isHugePages() ? (align(size()) / 2097152) : 0, align(size()) / 2097152 };
|
|
}
|
|
|
|
static uint32_t bindToNUMANode(int64_t affinity);
|
|
static void *allocateExecutableMemory(size_t size);
|
|
static void *allocateLargePagesMemory(size_t size);
|
|
static void flushInstructionCache(void *p, size_t size);
|
|
static void freeLargePagesMemory(void *p, size_t size);
|
|
static void init(bool hugePages);
|
|
static void protectExecutableMemory(void *p, size_t size);
|
|
static void unprotectExecutableMemory(void *p, size_t size);
|
|
|
|
static inline bool isHugepagesAvailable() { return (m_globalFlags & HUGEPAGES_AVAILABLE) != 0; }
|
|
static inline constexpr size_t align(size_t pos, size_t align = 2097152) { return ((pos - 1) / align + 1) * align; }
|
|
|
|
private:
|
|
enum Flags {
|
|
HUGEPAGES_AVAILABLE = 1,
|
|
HUGEPAGES = 2,
|
|
LOCK = 4
|
|
};
|
|
|
|
static int m_globalFlags;
|
|
|
|
int m_flags = 0;
|
|
size_t m_size = 0;
|
|
uint8_t *m_scratchpad = nullptr;
|
|
};
|
|
|
|
|
|
} /* namespace xmrig */
|
|
|
|
|
|
|
|
#endif /* XMRIG_VIRTUALMEMORY_H */
|