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Diffstat (limited to 'src/com/android/tv/util/DurationTimer.java')
-rw-r--r-- | src/com/android/tv/util/DurationTimer.java | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/com/android/tv/util/DurationTimer.java b/src/com/android/tv/util/DurationTimer.java new file mode 100644 index 00000000..1f057bf6 --- /dev/null +++ b/src/com/android/tv/util/DurationTimer.java @@ -0,0 +1,91 @@ +/* + * 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 com.android.tv.util; + +import android.os.SystemClock; +import android.util.Log; + +import com.android.tv.common.BuildConfig; + +/** + * Times a duration. + */ +public final class DurationTimer { + private static final String TAG = "DurationTimer"; + public static final long TIME_NOT_SET = -1; + + private long mStartTimeMs = TIME_NOT_SET; + private String mTag = TAG; + private boolean mLogEngOnly; + + public DurationTimer() { } + + public DurationTimer(String tag, boolean logEngOnly) { + mTag = tag; + mLogEngOnly = logEngOnly; + } + + /** + * Returns true if the timer is running. + */ + public boolean isRunning() { + return mStartTimeMs != TIME_NOT_SET; + } + + /** + * Start the timer. + */ + public void start() { + mStartTimeMs = SystemClock.elapsedRealtime(); + } + + /** + * Returns true if timer is started. + */ + public boolean isStarted() { + return mStartTimeMs != TIME_NOT_SET; + } + + /** + * Returns the current duration in milliseconds or {@link #TIME_NOT_SET} if the timer is not + * running. + */ + public long getDuration() { + return isRunning() ? SystemClock.elapsedRealtime() - mStartTimeMs : TIME_NOT_SET; + } + + /** + * Stops the timer and resets its value to {@link #TIME_NOT_SET}. + * + * @return the current duration in milliseconds or {@link #TIME_NOT_SET} if the timer is not + * running. + */ + public long reset() { + long duration = getDuration(); + mStartTimeMs = TIME_NOT_SET; + return duration; + } + + /** + * Adds information and duration time to the log. + */ + public void log(String message) { + if (isRunning() && (!mLogEngOnly || BuildConfig.ENG)) { + Log.i(mTag, message + " : " + getDuration() + "ms"); + } + } +} |