142 lines
4 KiB
C++
142 lines
4 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/>.
|
|
*/
|
|
|
|
|
|
#include <stdlib.h>
|
|
#include <sys/mman.h>
|
|
|
|
|
|
#include "crypto/common/portable/mm_malloc.h"
|
|
#include "crypto/common/VirtualMemory.h"
|
|
|
|
|
|
#if defined(__APPLE__)
|
|
# include <mach/vm_statistics.h>
|
|
#endif
|
|
|
|
|
|
xmrig::VirtualMemory::VirtualMemory(size_t size, bool hugePages, size_t align) :
|
|
m_size(VirtualMemory::align(size))
|
|
{
|
|
if (hugePages) {
|
|
m_scratchpad = static_cast<uint8_t*>(allocateLargePagesMemory(m_size));
|
|
if (m_scratchpad) {
|
|
m_flags.set(FLAG_HUGEPAGES, true);
|
|
|
|
madvise(m_scratchpad, size, MADV_RANDOM | MADV_WILLNEED);
|
|
|
|
if (mlock(m_scratchpad, m_size) == 0) {
|
|
m_flags.set(FLAG_LOCK, true);
|
|
}
|
|
|
|
return;
|
|
}
|
|
}
|
|
|
|
m_scratchpad = static_cast<uint8_t*>(_mm_malloc(m_size, align));
|
|
}
|
|
|
|
|
|
xmrig::VirtualMemory::~VirtualMemory()
|
|
{
|
|
if (!m_scratchpad) {
|
|
return;
|
|
}
|
|
|
|
if (isHugePages()) {
|
|
if (m_flags.test(FLAG_LOCK)) {
|
|
munlock(m_scratchpad, m_size);
|
|
}
|
|
|
|
freeLargePagesMemory(m_scratchpad, m_size);
|
|
}
|
|
else {
|
|
_mm_free(m_scratchpad);
|
|
}
|
|
}
|
|
|
|
|
|
bool xmrig::VirtualMemory::isHugepagesAvailable()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
|
|
void *xmrig::VirtualMemory::allocateExecutableMemory(size_t size)
|
|
{
|
|
# if defined(__APPLE__)
|
|
void *mem = mmap(0, size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANON, -1, 0);
|
|
# else
|
|
void *mem = mmap(0, size, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
|
|
# endif
|
|
|
|
return mem == MAP_FAILED ? nullptr : mem;
|
|
}
|
|
|
|
|
|
void *xmrig::VirtualMemory::allocateLargePagesMemory(size_t size)
|
|
{
|
|
# if defined(__APPLE__)
|
|
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, VM_FLAGS_SUPERPAGE_SIZE_2MB, 0);
|
|
# elif defined(__FreeBSD__)
|
|
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_ALIGNED_SUPER | MAP_PREFAULT_READ, -1, 0);
|
|
# else
|
|
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE, 0, 0);
|
|
# endif
|
|
|
|
return mem == MAP_FAILED ? nullptr : mem;
|
|
}
|
|
|
|
|
|
void xmrig::VirtualMemory::flushInstructionCache(void *p, size_t size)
|
|
{
|
|
# ifdef HAVE_BUILTIN_CLEAR_CACHE
|
|
__builtin___clear_cache(reinterpret_cast<char*>(p), reinterpret_cast<char*>(p) + size);
|
|
# endif
|
|
}
|
|
|
|
|
|
void xmrig::VirtualMemory::freeLargePagesMemory(void *p, size_t size)
|
|
{
|
|
munmap(p, size);
|
|
}
|
|
|
|
|
|
void xmrig::VirtualMemory::init()
|
|
{
|
|
}
|
|
|
|
|
|
void xmrig::VirtualMemory::protectExecutableMemory(void *p, size_t size)
|
|
{
|
|
mprotect(p, size, PROT_READ | PROT_EXEC);
|
|
}
|
|
|
|
|
|
void xmrig::VirtualMemory::unprotectExecutableMemory(void *p, size_t size)
|
|
{
|
|
mprotect(p, size, PROT_WRITE | PROT_EXEC);
|
|
}
|