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New summary information about 1GB pages.

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XMRig 2019-12-08 14:21:28 +07:00
parent 91b50f1ac8
commit 86e25a13e3
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GPG key ID: 446A53638BE94409
4 changed files with 46 additions and 22 deletions
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45
src/crypto/common/VirtualMemory_unix.cpp
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@ -29,6 +29,7 @@
#include <sys/mman.h>
#include "backend/cpu/Cpu.h"
#include "crypto/common/portable/mm_malloc.h"
#include "crypto/common/VirtualMemory.h"
@ -38,12 +39,27 @@
#endif
#if defined (XMRIG_OS_LINUX) && (defined(MAP_HUGE_1GB) || defined(MAP_HUGE_SHIFT))
# define XMRIG_HAS_1GB_PAGES
#endif
bool xmrig::VirtualMemory::isHugepagesAvailable()
{
return true;
}
bool xmrig::VirtualMemory::isOneGbPagesAvailable()
{
# ifdef XMRIG_HAS_1GB_PAGES
return Cpu::info()->hasOneGbPages();
# else
return false;
# endif
}
void *xmrig::VirtualMemory::allocateExecutableMemory(size_t size)
{
# if defined(__APPLE__)
@ -72,24 +88,23 @@ void *xmrig::VirtualMemory::allocateLargePagesMemory(size_t size)
void *xmrig::VirtualMemory::allocateOneGbPagesMemory(size_t size)
{
# if defined(__APPLE__)
void *mem = MAP_FAILED;
# elif defined(__FreeBSD__)
void *mem = MAP_FAILED;
# else
# ifdef XMRIG_HAS_1GB_PAGES
if (isOneGbPagesAvailable()) {
# if defined(MAP_HUGE_1GB)
constexpr int flag_1gb = MAP_HUGE_1GB;
# elif defined(MAP_HUGE_SHIFT)
constexpr int flag_1gb = (30 << MAP_HUGE_SHIFT);
# else
constexpr int flag_1gb = 0;
# endif
# if defined(MAP_HUGE_1GB)
constexpr int flag_1gb = MAP_HUGE_1GB;
# elif defined(MAP_HUGE_SHIFT)
constexpr int flag_1gb = (30 << MAP_HUGE_SHIFT);
# else
constexpr int flag_1gb = 0;
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE | flag_1gb, 0, 0);
return mem == MAP_FAILED ? nullptr : mem;
}
# endif
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE | flag_1gb, 0, 0);
# endif
return mem == MAP_FAILED ? nullptr : mem;
return nullptr;
}