126 lines
3.7 KiB
C++
126 lines
3.7 KiB
C++
/*
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* Copyright (c) 2017 The WebRTC project authors. All Rights Reserved.
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*
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* Use of this source code is governed by a BSD-style license
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* that can be found in the LICENSE file in the root of the source
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* tree. An additional intellectual property rights grant can be found
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* in the file PATENTS. All contributing project authors may
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* be found in the AUTHORS file in the root of the source tree.
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*/
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#include "rtc_base/cpu_time.h"
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#include "rtc_base/logging.h"
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#include "rtc_base/time_utils.h"
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#if defined(WEBRTC_LINUX)
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#include <time.h>
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#elif defined(WEBRTC_MAC)
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#include <mach/mach_init.h>
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#include <mach/mach_port.h>
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#include <mach/thread_act.h>
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#include <mach/thread_info.h>
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#include <sys/resource.h>
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#include <sys/times.h>
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#include <sys/types.h>
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#include <unistd.h>
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#elif defined(WEBRTC_WIN)
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#include <windows.h>
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#endif
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#if defined(WEBRTC_WIN)
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namespace {
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// FILETIME resolution is 100 nanosecs.
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const int64_t kNanosecsPerFiletime = 100;
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} // namespace
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#endif
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namespace rtc {
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int64_t GetProcessCpuTimeNanos() {
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#if defined(WEBRTC_LINUX)
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struct timespec ts;
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if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts) == 0) {
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return ts.tv_sec * kNumNanosecsPerSec + ts.tv_nsec;
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} else {
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RTC_LOG_ERR(LS_ERROR) << "clock_gettime() failed.";
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}
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#elif defined(WEBRTC_MAC)
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struct rusage rusage;
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if (getrusage(RUSAGE_SELF, &rusage) == 0) {
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return rusage.ru_utime.tv_sec * kNumNanosecsPerSec +
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rusage.ru_utime.tv_usec * kNumNanosecsPerMicrosec;
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} else {
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RTC_LOG_ERR(LS_ERROR) << "getrusage() failed.";
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}
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#elif defined(WEBRTC_WIN)
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FILETIME createTime;
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FILETIME exitTime;
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FILETIME kernelTime;
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FILETIME userTime;
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if (GetProcessTimes(GetCurrentProcess(), &createTime, &exitTime, &kernelTime,
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&userTime) != 0) {
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return ((static_cast<uint64_t>(userTime.dwHighDateTime) << 32) +
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userTime.dwLowDateTime) *
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kNanosecsPerFiletime;
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} else {
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RTC_LOG_ERR(LS_ERROR) << "GetProcessTimes() failed.";
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}
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#elif defined(WEBRTC_FUCHSIA)
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RTC_LOG_ERR(LS_ERROR) << "GetProcessCpuTimeNanos() not implemented";
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return 0;
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#else
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// Not implemented yet.
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static_assert(
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false, "GetProcessCpuTimeNanos() platform support not yet implemented.");
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#endif
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return -1;
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}
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int64_t GetThreadCpuTimeNanos() {
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#if defined(WEBRTC_LINUX)
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struct timespec ts;
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if (clock_gettime(CLOCK_THREAD_CPUTIME_ID, &ts) == 0) {
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return ts.tv_sec * kNumNanosecsPerSec + ts.tv_nsec;
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} else {
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RTC_LOG_ERR(LS_ERROR) << "clock_gettime() failed.";
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}
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#elif defined(WEBRTC_MAC)
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mach_port_t thread_port = mach_thread_self();
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thread_basic_info_data_t info;
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mach_msg_type_number_t count = THREAD_BASIC_INFO_COUNT;
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kern_return_t kr =
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thread_info(thread_port, THREAD_BASIC_INFO, (thread_info_t)&info, &count);
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mach_port_deallocate(mach_task_self(), thread_port);
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if (kr == KERN_SUCCESS) {
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return info.user_time.seconds * kNumNanosecsPerSec +
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info.user_time.microseconds * kNumNanosecsPerMicrosec;
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} else {
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RTC_LOG_ERR(LS_ERROR) << "thread_info() failed.";
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}
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#elif defined(WEBRTC_WIN)
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FILETIME createTime;
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FILETIME exitTime;
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FILETIME kernelTime;
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FILETIME userTime;
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if (GetThreadTimes(GetCurrentThread(), &createTime, &exitTime, &kernelTime,
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&userTime) != 0) {
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return ((static_cast<uint64_t>(userTime.dwHighDateTime) << 32) +
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userTime.dwLowDateTime) *
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kNanosecsPerFiletime;
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} else {
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RTC_LOG_ERR(LS_ERROR) << "GetThreadTimes() failed.";
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}
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#elif defined(WEBRTC_FUCHSIA)
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RTC_LOG_ERR(LS_ERROR) << "GetThreadCpuTimeNanos() not implemented";
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return 0;
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#else
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// Not implemented yet.
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static_assert(
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false, "GetThreadCpuTimeNanos() platform support not yet implemented.");
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#endif
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return -1;
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}
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} // namespace rtc
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