Method AllocateLocked

src/support/lockedpool.cpp:186–198

    page_size = sSysInfo.dwPageSize;
}
void *Win32LockedPageAllocator::AllocateLocked(size_t len, bool *lockingSuccess)
{
    len = align_up(len, page_size);
    void *addr = VirtualAlloc(nullptr, len, MEM_COMMIT | MEM_RESERVE, PAGE_READWRITE);
    if (addr) {
        // VirtualLock is used to attempt to keep keying material out of swap. Note
        // that it does not provide this as a guarantee, but, in practice, memory
        // that has been VirtualLock'd almost never gets written to the pagefile
        // except in rare circumstances where memory is extremely low.
        *lockingSuccess = VirtualLock(const_cast<void*>(addr), len) != 0;
    }
    return addr;
}
void Win32LockedPageAllocator::FreeLocked(void* addr, size_t len)
{
    len = align_up(len, page_size);