| 50 | |
| 51 | #ifdef _linux_ |
| 52 | size_t CountMapped(char* alignedPtr, size_t numOfPages) noexcept { |
| 53 | Y_ABORT_UNLESS( !((size_t)alignedPtr & PageSizeMask) ); |
| 54 | Y_ASSERT(numOfPages); |
| 55 | |
| 56 | size_t result = 0; |
| 57 | unsigned char* mappedPages = (unsigned char*) calloc(numOfPages, numOfPages); |
| 58 | Y_ABORT_UNLESS(mappedPages); |
| 59 | Y_DEFER { |
| 60 | free(mappedPages); |
| 61 | }; |
| 62 | |
| 63 | if (!mincore((void*)alignedPtr, numOfPages * PageSize, mappedPages)) { |
| 64 | for (size_t i = 0; i < numOfPages; ++i) { |
| 65 | if (mappedPages[i] & 1) { |
| 66 | ++result; |
| 67 | } |
| 68 | } |
| 69 | } else { |
| 70 | Y_ASSERT(false); |
| 71 | return 0; |
| 72 | } |
| 73 | |
| 74 | return result; |
| 75 | } |
| 76 | |
| 77 | #else |
| 78 | size_t CountMapped(char*, size_t) noexcept { |