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1 // Copyright 2014 The Chromium Authors. All rights reserved. | 1 // Copyright 2014 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 module tracing.mojom; | 5 module tracing.mojom; |
6 | 6 |
7 // To participate in the tracing ecosystem, implement the Provider interface | 7 // To participate in the tracing ecosystem, implement the Provider interface |
8 // connect to the tracing service & create a Recorder. Then, when the provider's | 8 // connect to the tracing service & create a Recorder. Then, when the provider's |
9 // Start() function is called collect tracing data and pass it back via the | 9 // Start() function is called collect tracing data and pass it back via the |
10 // provided Recorder interface up until Stop() is called. | 10 // provided Recorder interface up until Stop() is called. |
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28 // Stop tracing and flush results to the |stream| passed in to Start(). | 28 // Stop tracing and flush results to the |stream| passed in to Start(). |
29 // Closes |stream| when all data is collected. | 29 // Closes |stream| when all data is collected. |
30 StopAndFlush(); | 30 StopAndFlush(); |
31 }; | 31 }; |
32 | 32 |
33 // These times are used to determine startup performance metrics. | 33 // These times are used to determine startup performance metrics. |
34 // TODO(msw): Find a way to convert *_time metrics into TimeTicks earlier (ref: | 34 // TODO(msw): Find a way to convert *_time metrics into TimeTicks earlier (ref: |
35 // https://goo.gl/vZ8dZW). | 35 // https://goo.gl/vZ8dZW). |
36 struct StartupPerformanceTimes { | 36 struct StartupPerformanceTimes { |
37 // TODO(msw): Rename to match "BrowserMainEntryTimeAbsolute" metric? | 37 // TODO(msw): Rename to match "BrowserMainEntryTimeAbsolute" metric? |
38 int64 shell_process_creation_time; | 38 int64 service_manager_process_creation_time; |
39 int64 shell_main_entry_point_time; | 39 int64 service_manager_main_entry_point_time; |
40 int64 browser_message_loop_start_ticks; | 40 int64 browser_message_loop_start_ticks; |
41 int64 browser_window_display_ticks; | 41 int64 browser_window_display_ticks; |
42 int64 browser_open_tabs_time_delta; | 42 int64 browser_open_tabs_time_delta; |
43 // TODO(msw): Rename to avoid "web contents"? | 43 // TODO(msw): Rename to avoid "web contents"? |
44 int64 first_web_contents_main_frame_load_ticks; | 44 int64 first_web_contents_main_frame_load_ticks; |
45 // TODO(msw): Rename to match "FirstWebContents.NonEmptyPaint" metric? | 45 // TODO(msw): Rename to match "FirstWebContents.NonEmptyPaint" metric? |
46 int64 first_visually_non_empty_layout_ticks; | 46 int64 first_visually_non_empty_layout_ticks; |
47 }; | 47 }; |
48 | 48 |
49 // This interface accepts startup performance timing from a variety of sources. | 49 // This interface accepts startup performance timing from a variety of sources. |
50 interface StartupPerformanceDataCollector { | 50 interface StartupPerformanceDataCollector { |
51 // These setters may be called many times, only the first time is recorded. | 51 // These setters may be called many times, only the first time is recorded. |
52 SetShellProcessCreationTime(int64 time); | 52 SetServiceManagerProcessCreationTime(int64 time); |
53 SetShellMainEntryPointTime(int64 time); | 53 SetServiceManagerMainEntryPointTime(int64 time); |
54 SetBrowserMessageLoopStartTicks(int64 ticks); | 54 SetBrowserMessageLoopStartTicks(int64 ticks); |
55 SetBrowserWindowDisplayTicks(int64 ticks); | 55 SetBrowserWindowDisplayTicks(int64 ticks); |
56 SetBrowserOpenTabsTimeDelta(int64 delta); | 56 SetBrowserOpenTabsTimeDelta(int64 delta); |
57 SetFirstWebContentsMainFrameLoadTicks(int64 ticks); | 57 SetFirstWebContentsMainFrameLoadTicks(int64 ticks); |
58 SetFirstVisuallyNonEmptyLayoutTicks(int64 ticks); | 58 SetFirstVisuallyNonEmptyLayoutTicks(int64 ticks); |
59 | 59 |
60 // Get the currently available startup performance times. | 60 // Get the currently available startup performance times. |
61 GetStartupPerformanceTimes() => (StartupPerformanceTimes times); | 61 GetStartupPerformanceTimes() => (StartupPerformanceTimes times); |
62 }; | 62 }; |
63 | 63 |
64 interface Factory { | 64 interface Factory { |
65 CreateRecorder(Provider provider); | 65 CreateRecorder(Provider provider); |
66 }; | 66 }; |
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