| 131 | } |
| 132 | |
| 133 | void* allocLargePagesMemory(std::size_t bytes) { |
| 134 | void* mem; |
| 135 | #if defined(_WIN32) || defined(__CYGWIN__) |
| 136 | setPrivilege("SeLockMemoryPrivilege", 1); |
| 137 | auto pageMinimum = GetLargePageMinimum(); |
| 138 | if (pageMinimum > 0) |
| 139 | mem = VirtualAlloc(NULL, alignSize(bytes, pageMinimum), MEM_COMMIT | MEM_RESERVE | MEM_LARGE_PAGES, PAGE_READWRITE); |
| 140 | else |
| 141 | throw std::runtime_error("allocLargePagesMemory - Large pages are not supported"); |
| 142 | if (mem == nullptr) |
| 143 | throw std::runtime_error(getErrorMessage("allocLargePagesMemory - VirtualAlloc")); |
| 144 | #else |
| 145 | #ifdef __APPLE__ |
| 146 | mem = mmap(nullptr, bytes, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS, VM_FLAGS_SUPERPAGE_SIZE_2MB, 0); |
| 147 | #elif defined(__FreeBSD__) |
| 148 | mem = mmap(nullptr, bytes, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_ALIGNED_SUPER, -1, 0); |
| 149 | #elif defined(__OpenBSD__) || defined(__NetBSD__) |
| 150 | mem = MAP_FAILED; // OpenBSD does not support huge pages |
| 151 | #else |
| 152 | mem = mmap(nullptr, bytes, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANONYMOUS | MAP_HUGETLB | MAP_POPULATE, -1, 0); |
| 153 | #endif |
| 154 | if (mem == MAP_FAILED) |
| 155 | throw std::runtime_error("allocLargePagesMemory - mmap failed"); |
| 156 | #endif |
| 157 | return mem; |
| 158 | } |
| 159 | |
| 160 | void freePagedMemory(void* ptr, std::size_t bytes) { |
| 161 | #if defined(_WIN32) || defined(__CYGWIN__) |
no test coverage detected