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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 #ifndef UI_EVENTS_LATENCY_INFO_H_ | 5 #ifndef UI_LATENCY_INFO_LATENCY_INFO_H_ |
| 6 #define UI_EVENTS_LATENCY_INFO_H_ | 6 #define UI_LATENCY_INFO_LATENCY_INFO_H_ |
| 7 | 7 |
| 8 #include <stdint.h> | 8 #include <stdint.h> |
| 9 | 9 |
| 10 #include <memory> | 10 #include <memory> |
| 11 #include <string> | 11 #include <string> |
| 12 #include <utility> | 12 #include <utility> |
| 13 #include <vector> | 13 #include <vector> |
| 14 | 14 |
| 15 #include "base/containers/small_map.h" | 15 #include "base/containers/small_map.h" |
| 16 #include "base/time/time.h" | 16 #include "base/time/time.h" |
| 17 #include "base/trace_event/trace_event.h" | 17 #include "base/trace_event/trace_event.h" |
| 18 #include "ui/events/events_base_export.h" | 18 #include "ui/latency_info/latency_info_export.h" |
| 19 | 19 |
| 20 #if !defined(OS_IOS) | 20 #if !defined(OS_IOS) |
| 21 #include "ipc/ipc_param_traits.h" // nogncheck | 21 #include "ipc/ipc_param_traits.h" // nogncheck |
| 22 #endif | 22 #endif |
| 23 | 23 |
| 24 namespace ui { | 24 namespace ui { |
| 25 | 25 |
| 26 // When adding new components, or new metrics based on LatencyInfo, | 26 // When adding new components, or new metrics based on LatencyInfo, |
| 27 // please update latency_info.dot. | 27 // please update latency_info.dot. |
| 28 enum LatencyComponentType { | 28 enum LatencyComponentType { |
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| 98 // This component indicates that the input causes a commit to be scheduled | 98 // This component indicates that the input causes a commit to be scheduled |
| 99 // but the commit was aborted since it carried no new information. | 99 // but the commit was aborted since it carried no new information. |
| 100 INPUT_EVENT_LATENCY_TERMINATED_COMMIT_NO_UPDATE_COMPONENT, | 100 INPUT_EVENT_LATENCY_TERMINATED_COMMIT_NO_UPDATE_COMPONENT, |
| 101 // This component indicates that the input causes a swap to be scheduled | 101 // This component indicates that the input causes a swap to be scheduled |
| 102 // but the swap failed. | 102 // but the swap failed. |
| 103 INPUT_EVENT_LATENCY_TERMINATED_SWAP_FAILED_COMPONENT, | 103 INPUT_EVENT_LATENCY_TERMINATED_SWAP_FAILED_COMPONENT, |
| 104 LATENCY_COMPONENT_TYPE_LAST = | 104 LATENCY_COMPONENT_TYPE_LAST = |
| 105 INPUT_EVENT_LATENCY_TERMINATED_SWAP_FAILED_COMPONENT, | 105 INPUT_EVENT_LATENCY_TERMINATED_SWAP_FAILED_COMPONENT, |
| 106 }; | 106 }; |
| 107 | 107 |
| 108 class EVENTS_BASE_EXPORT LatencyInfo { | 108 class LATENCY_INFO_EXPORT LatencyInfo { |
| 109 public: | 109 public: |
| 110 struct LatencyComponent { | 110 struct LatencyComponent { |
| 111 // Nondecreasing number that can be used to determine what events happened | 111 // Nondecreasing number that can be used to determine what events happened |
| 112 // in the component at the time this struct was sent on to the next | 112 // in the component at the time this struct was sent on to the next |
| 113 // component. | 113 // component. |
| 114 int64_t sequence_number; | 114 int64_t sequence_number; |
| 115 // Average time of events that happened in this component. | 115 // Average time of events that happened in this component. |
| 116 base::TimeTicks event_time; | 116 base::TimeTicks event_time; |
| 117 // Count of events that happened in this component | 117 // Count of events that happened in this component |
| 118 uint32_t event_count; | 118 uint32_t event_count; |
| 119 }; | 119 }; |
| 120 | 120 |
| 121 struct EVENTS_BASE_EXPORT InputCoordinate { | 121 struct LATENCY_INFO_EXPORT InputCoordinate { |
| 122 InputCoordinate(); | 122 InputCoordinate(); |
| 123 InputCoordinate(float x, float y); | 123 InputCoordinate(float x, float y); |
| 124 | 124 |
| 125 float x; | 125 float x; |
| 126 float y; | 126 float y; |
| 127 }; | 127 }; |
| 128 | 128 |
| 129 // Empirically determined constant based on a typical scroll sequence. | 129 // Empirically determined constant based on a typical scroll sequence. |
| 130 enum { kTypicalMaxComponentsPerLatencyInfo = 10 }; | 130 enum { kTypicalMaxComponentsPerLatencyInfo = 10 }; |
| 131 | 131 |
| 132 enum { kMaxInputCoordinates = 2 }; | 132 enum { kMaxInputCoordinates = 2 }; |
| 133 | 133 |
| 134 // Map a Latency Component (with a component-specific int64_t id) to a | 134 // Map a Latency Component (with a component-specific int64_t id) to a |
| 135 // component info. | 135 // component info. |
| 136 typedef base::SmallMap< | 136 typedef base::SmallMap< |
| 137 std::map<std::pair<LatencyComponentType, int64_t>, LatencyComponent>, | 137 std::map<std::pair<LatencyComponentType, int64_t>, LatencyComponent>, |
| 138 kTypicalMaxComponentsPerLatencyInfo> LatencyMap; | 138 kTypicalMaxComponentsPerLatencyInfo> |
| 139 LatencyMap; |
| 139 | 140 |
| 140 LatencyInfo(); | 141 LatencyInfo(); |
| 141 LatencyInfo(const LatencyInfo& other); | 142 LatencyInfo(const LatencyInfo& other); |
| 142 ~LatencyInfo(); | 143 ~LatencyInfo(); |
| 143 | 144 |
| 144 // For test only. | 145 // For test only. |
| 145 LatencyInfo(int64_t trace_id, bool terminated); | 146 LatencyInfo(int64_t trace_id, bool terminated); |
| 146 | 147 |
| 147 // Returns true if the vector |latency_info| is valid. Returns false | 148 // Returns true if the vector |latency_info| is valid. Returns false |
| 148 // if it is not valid and log the |referring_msg|. | 149 // if it is not valid and log the |referring_msg|. |
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| 238 // Whether a terminal component has been added. | 239 // Whether a terminal component has been added. |
| 239 bool terminated_; | 240 bool terminated_; |
| 240 | 241 |
| 241 #if !defined(OS_IOS) | 242 #if !defined(OS_IOS) |
| 242 friend struct IPC::ParamTraits<ui::LatencyInfo>; | 243 friend struct IPC::ParamTraits<ui::LatencyInfo>; |
| 243 #endif | 244 #endif |
| 244 }; | 245 }; |
| 245 | 246 |
| 246 } // namespace ui | 247 } // namespace ui |
| 247 | 248 |
| 248 #endif // UI_EVENTS_LATENCY_INFO_H_ | 249 #endif // UI_LATENCY_INFO_LATENCY_INFO_H_ |
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