Function LargeBlockUnmap

library/cpp/lfalloc/lf_allocX64.h:430–441

static void LargeBlockUnmap(void* p, size_t pages) {
    const auto bytes = (pages + 1) * uintptr_t(4096);

    IncrementCounter(CT_MUNMAP, bytes);
    IncrementCounter(CT_MUNMAP_CNT, 1);
#ifdef _MSC_VER
    Y_ASSERT_NOBT(0);
#else
    TLargeBlk::As(p)->Mark(ELarge::Gone);
    munmap((char*)p - 4096ll, bytes);
#endif
}

//////////////////////////////////////////////////////////////////////////
const size_t LB_BUF_SIZE = 250;