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