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
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
|
// Copyright 2012 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_METRICS_POWER_PROCESS_MONITOR_H_
#define CHROME_BROWSER_METRICS_POWER_PROCESS_MONITOR_H_
#include <array>
#include <map>
#include <memory>
#include <optional>
#include "base/observer_list.h"
#include "base/process/process_handle.h"
#include "base/scoped_multi_source_observation.h"
#include "build/build_config.h"
#include "content/public/browser/browser_child_process_observer.h"
#include "content/public/browser/render_process_host.h"
#include "content/public/browser/render_process_host_creation_observer.h"
#include "content/public/browser/render_process_host_observer.h"
#include "content/public/common/process_type.h"
namespace base {
class ProcessMetrics;
}
enum MonitoredProcessType {
kBrowser,
kRenderer,
kExtensionPersistent,
kExtensionEvent,
kGpu,
kUtility,
kNetwork,
kOther, // Contains all other process types that are not explicitly tracked.
kCount,
};
MonitoredProcessType
GetMonitoredProcessTypeForNonRendererChildProcessForTesting(
const content::ChildProcessData& data);
struct ProcessInfo {
ProcessInfo(MonitoredProcessType type,
std::unique_ptr<base::ProcessMetrics> process_metrics);
~ProcessInfo();
MonitoredProcessType type;
std::unique_ptr<base::ProcessMetrics> process_metrics;
// The time at which the first process sample was taken (i.e. When the
// constructor is called). Used to distribute the calculated resource usage of
// the first interval over the full kLongIntervalDuration. Set to nullopt
// after the metrics for the first interval is calculated because the
// subsequent intervals will always take the full duration of
// kLongIntervalDuration.
std::optional<base::TimeTicks> first_sample_time;
};
// ProcessMonitor is a tool which allows the sampling of power-related metrics
// for all Chrome processes. The metrics sampling is driven externally by
// calling SampleAllProcesses() periodically.
class ProcessMonitor : public content::BrowserChildProcessObserver,
public content::RenderProcessHostCreationObserver,
public content::RenderProcessHostObserver {
public:
struct Metrics {
Metrics();
Metrics(const Metrics& other);
Metrics& operator=(const Metrics& other);
~Metrics();
// The percentage of time spent executing, across all threads of the
// process, in the interval since the last time the metric was sampled. This
// can exceed 100% in multi-thread processes running on multi-core systems.
// nullopt if there was an error calculating the CPU usage.
std::optional<double> cpu_usage;
#if BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX) || BUILDFLAG(IS_CHROMEOS) || \
BUILDFLAG(IS_AIX)
// Returns the number of average idle cpu wakeups per second since the last
// time the metric was sampled.
int idle_wakeups = 0;
#endif
#if BUILDFLAG(IS_MAC)
// The number of average "package idle exits" per second since the last
// time the metric was sampled. See base/process/process_metrics.h for a
// more detailed explanation.
int package_idle_wakeups = 0;
#endif
};
class Observer : public base::CheckedObserver {
public:
// Provides aggregated sampled metrics for all Chrome process of type
// `type`. This is called once per process type whenever
// `SampleAllProcesses` is called.
virtual void OnMetricsSampled(MonitoredProcessType type,
const Metrics& metrics) {}
// Provides the aggregated sampled metrics from every Chrome process. This
// is called once whenever `SampleAllProcesses` is called.
virtual void OnAggregatedMetricsSampled(const Metrics& metrics) {}
};
ProcessMonitor();
ProcessMonitor(const ProcessMonitor&) = delete;
ProcessMonitor& operator=(const ProcessMonitor&) = delete;
~ProcessMonitor() override;
// Gather the metrics for all the processes.
virtual void SampleAllProcesses(Observer* observer);
private:
// content::RenderProcessHostCreationObserver:
void OnRenderProcessHostCreated(
content::RenderProcessHost* render_process_host) override;
// content::RenderProcessHostObserver:
void RenderProcessReady(
content::RenderProcessHost* render_process_host) override;
void RenderProcessExited(
content::RenderProcessHost* render_process_host,
const content::ChildProcessTerminationInfo& info) override;
void RenderProcessHostDestroyed(
content::RenderProcessHost* render_process_host) override;
// content::BrowserChildProcessObserver:
void BrowserChildProcessLaunchedAndConnected(
const content::ChildProcessData& data) override;
void BrowserChildProcessHostDisconnected(
const content::ChildProcessData& data) override;
void BrowserChildProcessCrashed(
const content::ChildProcessData& data,
const content::ChildProcessTerminationInfo& info) override;
void BrowserChildProcessKilled(
const content::ChildProcessData& data,
const content::ChildProcessTerminationInfo& info) override;
void BrowserChildProcessExitedNormally(
const content::ChildProcessData& data,
const content::ChildProcessTerminationInfo& info) override;
void OnBrowserChildProcessExited(
const content::ChildProcessData& data,
const content::ChildProcessTerminationInfo& info);
base::ScopedMultiSourceObservation<content::RenderProcessHost,
content::RenderProcessHostObserver>
render_process_host_observations_{this};
ProcessInfo browser_process_info_;
std::map<content::RenderProcessHost*, ProcessInfo> render_process_infos_;
std::map<int, ProcessInfo> browser_child_process_infos_;
// The metrics for the processes that exited during the last interval. Added
// to the current interval's sample and then reset to zero.
std::array<Metrics, MonitoredProcessType::kCount> exited_processes_metrics_;
};
#endif // CHROME_BROWSER_METRICS_POWER_PROCESS_MONITOR_H_
|
