Function mem_usage_impl

ogsr_engine/xrCore/xrMemory.cpp:135–179

}

size_t mem_usage_impl(u32* pBlocksUsed, u32* pBlocksFree)
{
    static bool no_memory_usage = !strstr(Core.Params, "-memory_usage");
    if (no_memory_usage)
        return 0;

    auto heap_handle = reinterpret_cast<HANDLE>(_get_heap_handle());
    if (!HeapLock(heap_handle))
        return 0;

    _HEAPINFO hinfo;
    int heapstatus;
    hinfo._pentry = nullptr;
    size_t total = 0;
    u32 blocks_free = 0;
    u32 blocks_used = 0;
    while ((heapstatus = _heapwalk(&hinfo)) == _HEAPOK)
    {
        if (hinfo._useflag == _USEDENTRY)
        {
            total += hinfo._size;
            blocks_used += 1;
        }
        else
        {
            blocks_free += 1;
        }
    }
    if (pBlocksFree)
        *pBlocksFree = 1024 * blocks_free;
    if (pBlocksUsed)
        *pBlocksUsed = 1024 * blocks_used;

    HeapUnlock(heap_handle);

    switch (heapstatus)
    {
    case _HEAPEMPTY: break;
    case _HEAPEND: break;
    case _HEAPBADPTR: Msg("!![%s] bad pointer to heap", __FUNCTION__); break;
    case _HEAPBADBEGIN: Msg("!![%s] bad start of heap", __FUNCTION__); break;
    case _HEAPBADNODE: Msg("!![%s] bad node in heap", __FUNCTION__); break;
    }
    return total;
}