Method performAllocation

include/robin_hood.h:506–515

    // Called when no memory is available (mHead == 0).
    // Don't inline this slow path.
    ROBIN_HOOD(NOINLINE) T* performAllocation() {
        size_t const numElementsToAlloc = calcNumElementsToAlloc();

        // alloc new memory: [prev |T, T, ... T]
        size_t const bytes = ALIGNMENT + ALIGNED_SIZE * numElementsToAlloc;
        ROBIN_HOOD_LOG("std::malloc " << bytes << " = " << ALIGNMENT << " + " << ALIGNED_SIZE
                                      << " * " << numElementsToAlloc)
        add(assertNotNull<std::bad_alloc>(std::malloc(bytes)), bytes);
        return mHead;
    }

    // enforce byte alignment of the T's
#if ROBIN_HOOD(CXX) >= ROBIN_HOOD(CXX14)