blob: b70b6eb6288b92302f673e973360b9dc86af177e (
plain)
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
|
// Copyright 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_TASK_MANAGEMENT_SAMPLING_TASK_GROUP_SAMPLER_H_
#define CHROME_BROWSER_TASK_MANAGEMENT_SAMPLING_TASK_GROUP_SAMPLER_H_
#include <stdint.h>
#include "base/callback.h"
#include "base/macros.h"
#include "base/memory/ref_counted.h"
#include "base/process/process.h"
#include "base/process/process_handle.h"
#include "base/process/process_metrics.h"
#include "base/sequence_checker.h"
#include "base/sequenced_task_runner.h"
#include "build/build_config.h"
namespace task_management {
// Wraps the memory usage stats values together so that it can be sent between
// the UI and the worker threads.
struct MemoryUsageStats {
int64_t private_bytes;
int64_t shared_bytes;
int64_t physical_bytes;
MemoryUsageStats()
: private_bytes(-1),
shared_bytes(-1),
physical_bytes(-1) {
}
};
// Defines the expensive process' stats sampler that will calculate these
// resources on the worker thread. Objects of this class are created by the
// TaskGroups on the UI thread, however it will be used mainly on a blocking
// pool thread.
class TaskGroupSampler : public base::RefCountedThreadSafe<TaskGroupSampler> {
public:
// The below are the types of the callbacks to the UI thread upon their
// corresponding refresh are done on the worker thread.
using OnCpuRefreshCallback = base::Callback<void(double)>;
using OnMemoryRefreshCallback = base::Callback<void(MemoryUsageStats)>;
using OnIdleWakeupsCallback = base::Callback<void(int)>;
#if defined(OS_LINUX)
using OnOpenFdCountCallback = base::Callback<void(int)>;
#endif // defined(OS_LINUX)
using OnProcessPriorityCallback = base::Callback<void(bool)>;
TaskGroupSampler(
base::Process process,
const scoped_refptr<base::SequencedTaskRunner>& blocking_pool_runner,
const OnCpuRefreshCallback& on_cpu_refresh,
const OnMemoryRefreshCallback& on_memory_refresh,
const OnIdleWakeupsCallback& on_idle_wakeups,
#if defined(OS_LINUX)
const OnOpenFdCountCallback& on_open_fd_count,
#endif // defined(OS_LINUX)
const OnProcessPriorityCallback& on_process_priority);
// Refreshes the expensive process' stats (CPU usage, memory usage, and idle
// wakeups per second) on the worker thread.
void Refresh(int64_t refresh_flags);
private:
friend class base::RefCountedThreadSafe<TaskGroupSampler>;
~TaskGroupSampler();
// The refresh calls that will be done on the worker thread.
double RefreshCpuUsage();
MemoryUsageStats RefreshMemoryUsage();
int RefreshIdleWakeupsPerSecond();
#if defined(OS_LINUX)
int RefreshOpenFdCount();
#endif // defined(OS_LINUX)
bool RefreshProcessPriority();
// The process that holds the handle that we own so that we can use it for
// creating the ProcessMetrics.
base::Process process_;
scoped_ptr<base::ProcessMetrics> process_metrics_;
// The specific blocking pool SequencedTaskRunner that will be used to post
// the refresh tasks onto serially.
scoped_refptr<base::SequencedTaskRunner> blocking_pool_runner_;
// The UI-thread callbacks in TaskGroup to be called when their corresponding
// refreshes on the worker thread are done.
const OnCpuRefreshCallback on_cpu_refresh_callback_;
const OnMemoryRefreshCallback on_memory_refresh_callback_;
const OnIdleWakeupsCallback on_idle_wakeups_callback_;
#if defined(OS_LINUX)
const OnOpenFdCountCallback on_open_fd_count_callback_;
#endif // defined(OS_LINUX)
const OnProcessPriorityCallback on_process_priority_callback_;
// To assert we're running on the correct thread.
base::SequenceChecker worker_pool_sequenced_checker_;
DISALLOW_COPY_AND_ASSIGN(TaskGroupSampler);
};
} // namespace task_management
#endif // CHROME_BROWSER_TASK_MANAGEMENT_SAMPLING_TASK_GROUP_SAMPLER_H_
|
