| /* |
| * Copyright (C) 2017-2018 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. 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. |
| */ |
| |
| #import "config.h" |
| #import "CPUTime.h" |
| |
| #import "MachSendRight.h" |
| #import <mach/mach.h> |
| #import <mach/mach_time.h> |
| #import <mach/task.h> |
| #import <mach/task_info.h> |
| #import <mach/thread_info.h> |
| #import <sys/time.h> |
| |
| namespace WTF { |
| |
| static const int64_t microsecondsPerSecond = 1000000; |
| |
| static int64_t timeValueToMicroseconds(const time_value_t& value) |
| { |
| int64_t result = value.seconds; |
| result *= microsecondsPerSecond; |
| result += value.microseconds; |
| return result; |
| } |
| |
| std::optional<CPUTime> CPUTime::get() |
| { |
| // Account for current threads. |
| task_thread_times_info threadInfoData; |
| mach_msg_type_number_t threadInfoCount = TASK_THREAD_TIMES_INFO_COUNT; |
| kern_return_t result = task_info(mach_task_self(), TASK_THREAD_TIMES_INFO, reinterpret_cast<task_info_t>(&threadInfoData), &threadInfoCount); |
| if (result != KERN_SUCCESS) |
| return std::nullopt; |
| |
| int64_t userTime = timeValueToMicroseconds(threadInfoData.user_time); |
| int64_t systemTime = timeValueToMicroseconds(threadInfoData.system_time); |
| |
| // Account for termined threads. |
| task_basic_info taskInfoData; |
| mach_msg_type_number_t taskInfoCount = TASK_BASIC_INFO_COUNT; |
| result = task_info(mach_task_self(), TASK_BASIC_INFO, reinterpret_cast<task_info_t>(&taskInfoData), &taskInfoCount); |
| if (result != KERN_SUCCESS) |
| return std::nullopt; |
| |
| userTime += timeValueToMicroseconds(taskInfoData.user_time); |
| systemTime += timeValueToMicroseconds(taskInfoData.system_time); |
| |
| return CPUTime { MonotonicTime::now(), Seconds::fromMicroseconds(userTime), Seconds::fromMicroseconds(systemTime) }; |
| } |
| |
| Seconds CPUTime::forCurrentThread() |
| { |
| mach_msg_type_number_t infoCount = THREAD_BASIC_INFO_COUNT; |
| thread_basic_info_data_t info; |
| |
| auto threadPort = MachSendRight::adopt(mach_thread_self()); |
| auto ret = thread_info(threadPort.sendRight(), THREAD_BASIC_INFO, reinterpret_cast<thread_info_t>(&info), &infoCount); |
| RELEASE_ASSERT(ret == KERN_SUCCESS); |
| |
| return Seconds(info.user_time.seconds + info.system_time.seconds) + Seconds::fromMicroseconds(info.user_time.microseconds + info.system_time.microseconds); |
| } |
| |
| } |