1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
|
// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "base/threading/platform_thread_metrics.h"
#include <mach/mach.h>
#include <pthread.h>
#include <memory>
#include <optional>
#include "base/memory/ptr_util.h"
#include "base/threading/platform_thread.h"
#include "base/time/time.h"
#include "base/trace_event/trace_event.h"
namespace base {
// static
std::unique_ptr<PlatformThreadMetrics> PlatformThreadMetrics::CreateFromHandle(
PlatformThreadHandle handle) {
if (handle.is_null()) {
return nullptr;
}
return WrapUnique(new PlatformThreadMetrics(handle));
}
std::optional<TimeDelta> PlatformThreadMetrics::GetCumulativeCPUUsage() {
TRACE_EVENT("base", "Thread::GetCumulativeCPUUsage");
mach_port_t thread = pthread_mach_thread_np(handle_.platform_handle());
if (thread == MACH_PORT_NULL) {
return std::nullopt;
}
thread_basic_info_data_t thread_info_data;
mach_msg_type_number_t thread_info_count = THREAD_BASIC_INFO_COUNT;
kern_return_t kr = thread_info(
thread, THREAD_BASIC_INFO,
reinterpret_cast<thread_info_t>(&thread_info_data), &thread_info_count);
if (kr != KERN_SUCCESS) {
return std::nullopt;
}
TimeDelta cpu_time = Seconds(thread_info_data.user_time.seconds);
cpu_time += Microseconds(thread_info_data.user_time.microseconds);
cpu_time += Seconds(thread_info_data.system_time.seconds);
cpu_time += Microseconds(thread_info_data.system_time.microseconds);
return cpu_time;
}
} // namespace base
|
