50     void *m_ptr = nullptr;  member in FileMap
67         m_ptr = mmap(nullptr, size, PROT_READ | PROT_WRITE, MAP_SHARED, m_fileFd.get(), 0);
68         if ((int)(uintptr_t)m_ptr == -1) {
69 …        cout << "Error: mmap failed: " << (int)(uintptr_t)m_ptr << ": " << strerror(errno) << endl;
75             madvise(m_ptr, m_size, MADV_RANDOM);
78             madvise(m_ptr, m_size, MADV_SEQUENTIAL);
82             uint8_t *targetPtr = (uint8_t*)m_ptr + 4096ull * i;
87         uint8_t *targetPtr = (uint8_t*)m_ptr + pageSize * targetPage;  in benchRandomRead()
91         uint8_t *targetPtr = (uint8_t*)m_ptr + pageSize * targetPage;  in benchRandomWrite()
95         uint8_t *targetPtr = (uint8_t*)m_ptr + pageSize * j;  in benchLinearRead()
99         uint8_t *targetPtr = (uint8_t*)m_ptr + pageSize * j;  in benchLinearWrite()
103         int ret1 = msync(m_ptr, m_size, MS_SYNC | MS_INVALIDATE);  in dropCache()
104         madvise(m_ptr, m_size, MADV_DONTNEED);  in dropCache()
108         if (m_ptr)  in ~FileMap()
109             munmap(m_ptr, m_size);  in ~FileMap()