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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package android.view;
import android.annotation.IntDef;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
/**
* Class that contains all the timing information for the current frame. This
* is used in conjunction with the hardware renderer to provide
* continous-monitoring jank events
*
* All times in nanoseconds from CLOCK_MONOTONIC/System.nanoTime()
*
* To minimize overhead from System.nanoTime() calls we infer durations of
* things by knowing the ordering of the events. For example, to know how
* long layout & measure took it's displayListRecordStart - performTraversalsStart.
*
* These constants must be kept in sync with FrameInfo.h in libhwui and are
* used for indexing into AttachInfo's mFrameInfo long[], which is intended
* to be quick to pass down to native via JNI, hence a pre-packed format
*
* @hide
*/
final class FrameInfo {
long[] mFrameInfo = new long[9];
// Various flags set to provide extra metadata about the current frame
private static final int FLAGS = 0;
// Is this the first-draw following a window layout?
public static final long FLAG_WINDOW_LAYOUT_CHANGED = 1;
@IntDef(flag = true, value = {
FLAG_WINDOW_LAYOUT_CHANGED })
@Retention(RetentionPolicy.SOURCE)
public @interface FrameInfoFlags {}
// The intended vsync time, unadjusted by jitter
private static final int INTENDED_VSYNC = 1;
// Jitter-adjusted vsync time, this is what was used as input into the
// animation & drawing system
private static final int VSYNC = 2;
// The time of the oldest input event
private static final int OLDEST_INPUT_EVENT = 3;
// The time of the newest input event
private static final int NEWEST_INPUT_EVENT = 4;
// When input event handling started
private static final int HANDLE_INPUT_START = 5;
// When animation evaluations started
private static final int ANIMATION_START = 6;
// When ViewRootImpl#performTraversals() started
private static final int PERFORM_TRAVERSALS_START = 7;
// When View:draw() started
private static final int DRAW_START = 8;
public void setVsync(long intendedVsync, long usedVsync) {
mFrameInfo[INTENDED_VSYNC] = intendedVsync;
mFrameInfo[VSYNC] = usedVsync;
mFrameInfo[OLDEST_INPUT_EVENT] = Long.MAX_VALUE;
mFrameInfo[NEWEST_INPUT_EVENT] = 0;
mFrameInfo[FLAGS] = 0;
}
public void updateInputEventTime(long inputEventTime, long inputEventOldestTime) {
if (inputEventOldestTime < mFrameInfo[OLDEST_INPUT_EVENT]) {
mFrameInfo[OLDEST_INPUT_EVENT] = inputEventOldestTime;
}
if (inputEventTime > mFrameInfo[NEWEST_INPUT_EVENT]) {
mFrameInfo[NEWEST_INPUT_EVENT] = inputEventTime;
}
}
public void markInputHandlingStart() {
mFrameInfo[HANDLE_INPUT_START] = System.nanoTime();
}
public void markAnimationsStart() {
mFrameInfo[ANIMATION_START] = System.nanoTime();
}
public void markPerformTraversalsStart() {
mFrameInfo[PERFORM_TRAVERSALS_START] = System.nanoTime();
}
public void markDrawStart() {
mFrameInfo[DRAW_START] = System.nanoTime();
}
public void addFlags(@FrameInfoFlags long flags) {
mFrameInfo[FLAGS] |= flags;
}
}
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