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Update VirtualMemory_unix.cpp

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This commit is contained in:
SChernykh 2019-12-03 20:25:51 +01:00
parent c3fd5835c3
commit 450b9ec19a
1 changed files with 13 additions and 1 deletions
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14
src/crypto/common/VirtualMemory_unix.cpp
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@ -58,12 +58,24 @@ void *xmrig::VirtualMemory::allocateExecutableMemory(size_t size)
void *xmrig::VirtualMemory::allocateLargePagesMemory(size_t size)
{
int flag_1gb = 0;
# 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);
# if defined(MAP_HUGE_1GB)
flag_1gb = (size > (1UL << 30)) ? MAP_HUGE_1GB : 0;
# elif defined(MAP_HUGE_SHIFT)
flag_1gb = (size > (1UL << 30)) ? (30 << MAP_HUGE_SHIFT) : 0;
# endif
void *mem = mmap(0, size, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE | flag_1gb, 0, 0);
if (mem == MAP_FAILED) {
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;