/* * Copyright (C) 2018 Google, 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. AND ITS CONTRIBUTORS ``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 ITS 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 "config.h" #include <wtf/CPUTime.h> #include <zircon/syscalls.h> namespace WTF { static Seconds timeToSeconds(zx_time_t t) { return Seconds(t / static_cast<double>(ZX_SEC(1))); } Optional<CPUTime> CPUTime::get() { // Fuchsia issue ZX-2318 tracks being able to get the monotonic and thread // times atomically and being able to separate ZX_CLOCK_THREAD into user and // kernel time. zx_time_t thread = zx_clock_get(ZX_CLOCK_THREAD); return CPUTime { MonotonicTime::now(), timeToSeconds(thread), Seconds() }; } Seconds CPUTime::forCurrentThread() { return timeToSeconds(zx_clock_get(ZX_CLOCK_THREAD)); } }