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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef REMOTING_HOST_HOST_STATS_H_ | |
6 #define REMOTING_HOST_HOST_STATS_H_ | |
7 | |
8 #include <memory> | |
9 | |
10 #include "base/memory/ref_counted.h" | |
11 #include "base/memory/weak_ptr.h" | |
12 #include "base/process/process_metrics.h" | |
13 #include "base/synchronization/lock.h" | |
14 #include "base/task_runner.h" | |
15 #include "base/threading/thread_checker.h" | |
16 #include "base/time/time.h" | |
17 #include "remoting/base/process_resource_usage.h" | |
18 #include "remoting/host/host_stats_stub.h" | |
19 | |
20 namespace remoting { | |
21 namespace host { | |
22 | |
23 // A component to report host process statistic data regularly. This class also | |
24 // implements HostStatsStub, so several HostStats instances can chain together | |
25 // to accumulate the total resource usage of several processes. | |
Sergey Ulanov
2017/03/27 19:43:20
I don't think that chaining is the best approach h
Hzj_jie
2017/03/30 01:09:45
I have no objection on holding several HostStats s
| |
26 class HostStats final : public HostStatsStub { | |
Sergey Ulanov
2017/03/27 19:43:20
HostStatsSender or maybe HostStatsAgenet
Hzj_jie
2017/03/30 01:09:46
Done.
| |
27 public: | |
28 // HostStats starts immediately, and reports the statistic data to | |
29 // |host_stats_stub| once per |interval| in | |
30 // MessageLoop::current()->task_runner(). HostStats does not take the | |
31 // ownership of |host_stats_stub|. It needs to be outlived this instance. | |
32 HostStats(HostStatsStub* host_stats_stub, base::TimeDelta interval); | |
33 | |
34 // Needs to be destructed on the same thread as constructing. | |
35 ~HostStats(); | |
36 | |
37 private: | |
38 void PostTask(); | |
39 | |
40 void ReportUsage(); | |
41 | |
42 // HostStatsStub interface. | |
43 void OnHostStats(const ProcessResourceUsage& usage) override; | |
44 | |
45 HostStatsStub* const host_stats_stub_; | |
46 const base::TimeDelta interval_; | |
47 const std::unique_ptr<base::ProcessMetrics> metrics_; | |
48 base::Lock lock_; | |
49 ProcessResourceUsage received_usage_; | |
50 base::WeakPtrFactory<HostStats> weak_factory_; | |
51 }; | |
52 | |
53 } // namespace host | |
54 } // namespace remoting | |
55 | |
56 #endif // REMOTING_HOST_HOST_STATS_H_ | |
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