1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
#ifndef THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_MAIN_THREAD_USE_CASE_H_
#define THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_MAIN_THREAD_USE_CASE_H_
namespace blink {
namespace scheduler {
// Keep RendererScheduler::UseCaseToString in sync with this enum.
// This enum is used for histograms and should not be renumbered.
enum class UseCase {
// No active use case detected.
kNone = 0,
// A continuous gesture (e.g., scroll, pinch) which is being driven by the
// compositor thread.
kCompositorGesture = 1,
// An unspecified touch gesture which is being handled by the main thread.
// Note that since we don't have a full view of the use case, we should be
// careful to prioritize all work equally.
kMainThreadCustomInputHandling = 2,
// A continuous gesture (e.g., scroll, pinch) which is being driven by the
// compositor thread but also observed by the main thread. An example is
// synchronized scrolling where a scroll listener on the main thread changes
// page layout based on the current scroll position.
kSynchronizedGesture = 3,
// A gesture has recently started and we are about to run main thread touch
// listeners to find out the actual gesture type. To minimize touch latency,
// only input handling work should run in this state.
kTouchstart = 4,
// A page is loading.
kLoading = 5,
// A continuous gesture (e.g., scroll) which is being handled by the main
// thread.
kMainThreadGesture = 6,
kFirstUseCase = kNone,
// Must be the last entry.
kCount = 7,
};
} // namespace scheduler
} // namespace blink
#endif // THIRD_PARTY_BLINK_RENDERER_PLATFORM_SCHEDULER_MAIN_THREAD_USE_CASE_H_
|
