/* * Copyright (C) 2014 Apple Inc. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include "CPUCount.h" #include "churn.h" #include <memory> #include <stddef.h> #include "mbmalloc.h" struct HeapDouble { void* operator new(size_t size) { return mbmalloc(size); } void operator delete(void* p, size_t size) { mbfree(p, size); } HeapDouble(double d) : value(d) { } const HeapDouble& operator+=(const HeapDouble& other) { value += other.value; return *this; } double value; }; void benchmark_churn(bool isParallel) { size_t times = 7000000; if (isParallel) times /= cpuCount(); auto total = std::unique_ptr<HeapDouble>(new HeapDouble(0.0)); for (size_t i = 0; i < times; ++i) { auto heapDouble = std::unique_ptr<HeapDouble>(new HeapDouble(i)); *total += *heapDouble; } }