| // Copyright (c) 2012 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 COMPONENTS_TRACING_CHILD_CHILD_TRACE_MESSAGE_FILTER_H_ |
| #define COMPONENTS_TRACING_CHILD_CHILD_TRACE_MESSAGE_FILTER_H_ |
| |
| #include <stdint.h> |
| #include <string> |
| |
| #include "base/bind.h" |
| #include "base/macros.h" |
| #include "base/metrics/histogram.h" |
| #include "base/time/time.h" |
| #include "components/tracing/tracing_export.h" |
| #include "ipc/message_filter.h" |
| |
| namespace base { |
| class SingleThreadTaskRunner; |
| } |
| |
| namespace tracing { |
| |
| // This class sends and receives trace messages on child processes. |
| class TRACING_EXPORT ChildTraceMessageFilter : public IPC::MessageFilter { |
| public: |
| explicit ChildTraceMessageFilter( |
| base::SingleThreadTaskRunner* ipc_task_runner); |
| |
| // IPC::MessageFilter implementation. |
| void OnFilterAdded(IPC::Channel* channel) override; |
| void OnFilterRemoved() override; |
| bool OnMessageReceived(const IPC::Message& message) override; |
| |
| base::SingleThreadTaskRunner* ipc_task_runner() const { |
| return ipc_task_runner_; |
| } |
| |
| protected: |
| ~ChildTraceMessageFilter() override; |
| |
| private: |
| friend class ChildTraceMessageFilterTest; |
| |
| // Message handlers. |
| void OnSetTracingProcessId(uint64_t tracing_process_id); |
| void OnSetWatchEvent(const std::string& category_name, |
| const std::string& event_name); |
| void OnCancelWatchEvent(); |
| void OnWatchEventMatched(); |
| void OnSetUMACallback(const std::string& histogram_name, |
| int histogram_lower_value, |
| int histogram_upper_value, |
| bool repeat); |
| void OnClearUMACallback(const std::string& histogram_name); |
| void OnHistogramChanged(const std::string& histogram_name, |
| base::Histogram::Sample reference_lower_value, |
| base::Histogram::Sample reference_upper_value, |
| bool repeat, |
| base::Histogram::Sample actual_value); |
| void SendTriggerMessage(const std::string& histogram_name); |
| void SendAbortBackgroundTracingMessage(); |
| |
| void SetSenderForTesting(IPC::Sender* sender); |
| |
| uint8_t enabled_tracing_modes_; |
| |
| IPC::Sender* sender_; |
| base::SingleThreadTaskRunner* ipc_task_runner_; |
| |
| base::Time histogram_last_changed_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ChildTraceMessageFilter); |
| }; |
| |
| } // namespace tracing |
| |
| #endif // COMPONENTS_TRACING_CHILD_CHILD_TRACE_MESSAGE_FILTER_H_ |