Index: remoting/host/host_stats.h |
diff --git a/remoting/host/host_stats.h b/remoting/host/host_stats.h |
new file mode 100644 |
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+++ b/remoting/host/host_stats.h |
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+// Copyright 2017 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 REMOTING_HOST_HOST_STATS_H_ |
+#define REMOTING_HOST_HOST_STATS_H_ |
+ |
+#include <memory> |
+ |
+#include "base/memory/ref_counted.h" |
+#include "base/memory/weak_ptr.h" |
+#include "base/process/process_metrics.h" |
+#include "base/synchronization/lock.h" |
+#include "base/task_runner.h" |
+#include "base/threading/thread_checker.h" |
+#include "base/time/time.h" |
+#include "remoting/base/process_resource_usage.h" |
+#include "remoting/host/host_stats_stub.h" |
+ |
+namespace remoting { |
+namespace host { |
+ |
+// A component to report host process statistic data regularly. This class also |
+// implements HostStatsStub, so several HostStats instances can chain together |
+// 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
|
+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.
|
+ public: |
+ // HostStats starts immediately, and reports the statistic data to |
+ // |host_stats_stub| once per |interval| in |
+ // MessageLoop::current()->task_runner(). HostStats does not take the |
+ // ownership of |host_stats_stub|. It needs to be outlived this instance. |
+ HostStats(HostStatsStub* host_stats_stub, base::TimeDelta interval); |
+ |
+ // Needs to be destructed on the same thread as constructing. |
+ ~HostStats(); |
+ |
+ private: |
+ void PostTask(); |
+ |
+ void ReportUsage(); |
+ |
+ // HostStatsStub interface. |
+ void OnHostStats(const ProcessResourceUsage& usage) override; |
+ |
+ HostStatsStub* const host_stats_stub_; |
+ const base::TimeDelta interval_; |
+ const std::unique_ptr<base::ProcessMetrics> metrics_; |
+ base::Lock lock_; |
+ ProcessResourceUsage received_usage_; |
+ base::WeakPtrFactory<HostStats> weak_factory_; |
+}; |
+ |
+} // namespace host |
+} // namespace remoting |
+ |
+#endif // REMOTING_HOST_HOST_STATS_H_ |