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author | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:45 -0800 |
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committer | The Android Open Source Project <initial-contribution@android.com> | 2009-03-03 18:28:45 -0800 |
commit | d83a98f4ce9cfa908f5c54bbd70f03eec07e7553 (patch) | |
tree | 4b825dc642cb6eb9a060e54bf8d69288fbee4904 /core/java/android/util/TimingLogger.java | |
parent | 076357b8567458d4b6dfdcf839ef751634cd2bfb (diff) | |
download | frameworks_base-d83a98f4ce9cfa908f5c54bbd70f03eec07e7553.zip frameworks_base-d83a98f4ce9cfa908f5c54bbd70f03eec07e7553.tar.gz frameworks_base-d83a98f4ce9cfa908f5c54bbd70f03eec07e7553.tar.bz2 |
auto import from //depot/cupcake/@135843
Diffstat (limited to 'core/java/android/util/TimingLogger.java')
-rw-r--r-- | core/java/android/util/TimingLogger.java | 144 |
1 files changed, 0 insertions, 144 deletions
diff --git a/core/java/android/util/TimingLogger.java b/core/java/android/util/TimingLogger.java deleted file mode 100644 index 0f39c97..0000000 --- a/core/java/android/util/TimingLogger.java +++ /dev/null @@ -1,144 +0,0 @@ -/* - * Copyright (C) 2007 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.util; - -import java.util.ArrayList; - -import android.os.SystemClock; - -/** - * A utility class to help log timings splits throughout a method call. - * Typical usage is: - * - * TimingLogger timings = new TimingLogger(TAG, "methodA"); - * ... do some work A ... - * timings.addSplit("work A"); - * ... do some work B ... - * timings.addSplit("work B"); - * ... do some work C ... - * timings.addSplit("work C"); - * timings.dumpToLog(); - * - * The dumpToLog call would add the following to the log: - * - * D/TAG ( 3459): methodA: begin - * D/TAG ( 3459): methodA: 9 ms, work A - * D/TAG ( 3459): methodA: 1 ms, work B - * D/TAG ( 3459): methodA: 6 ms, work C - * D/TAG ( 3459): methodA: end, 16 ms - */ -public class TimingLogger { - - /** - * The Log tag to use for checking Log.isLoggable and for - * logging the timings. - */ - private String mTag; - - /** A label to be included in every log. */ - private String mLabel; - - /** Used to track whether Log.isLoggable was enabled at reset time. */ - private boolean mDisabled; - - /** Stores the time of each split. */ - ArrayList<Long> mSplits; - - /** Stores the labels for each split. */ - ArrayList<String> mSplitLabels; - - /** - * Create and initialize a TimingLogger object that will log using - * the specific tag. If the Log.isLoggable is not enabled to at - * least the Log.VERBOSE level for that tag at creation time then - * the addSplit and dumpToLog call will do nothing. - * @param tag the log tag to use while logging the timings - * @param label a string to be displayed with each log - */ - public TimingLogger(String tag, String label) { - reset(tag, label); - } - - /** - * Clear and initialize a TimingLogger object that will log using - * the specific tag. If the Log.isLoggable is not enabled to at - * least the Log.VERBOSE level for that tag at creation time then - * the addSplit and dumpToLog call will do nothing. - * @param tag the log tag to use while logging the timings - * @param label a string to be displayed with each log - */ - public void reset(String tag, String label) { - mTag = tag; - mLabel = label; - reset(); - } - - /** - * Clear and initialize a TimingLogger object that will log using - * the tag and label that was specified previously, either via - * the constructor or a call to reset(tag, label). If the - * Log.isLoggable is not enabled to at least the Log.VERBOSE - * level for that tag at creation time then the addSplit and - * dumpToLog call will do nothing. - */ - public void reset() { - mDisabled = !Log.isLoggable(mTag, Log.VERBOSE); - if (mDisabled) return; - if (mSplits == null) { - mSplits = new ArrayList<Long>(); - mSplitLabels = new ArrayList<String>(); - } else { - mSplits.clear(); - mSplitLabels.clear(); - } - addSplit(null); - } - - /** - * Add a split for the current time, labeled with splitLabel. If - * Log.isLoggable was not enabled to at least the Log.VERBOSE for - * the specified tag at construction or reset() time then this - * call does nothing. - * @param splitLabel a label to associate with this split. - */ - public void addSplit(String splitLabel) { - if (mDisabled) return; - long now = SystemClock.elapsedRealtime(); - mSplits.add(now); - mSplitLabels.add(splitLabel); - } - - /** - * Dumps the timings to the log using Log.d(). If Log.isLoggable was - * not enabled to at least the Log.VERBOSE for the specified tag at - * construction or reset() time then this call does nothing. - */ - public void dumpToLog() { - if (mDisabled) return; - Log.d(mTag, mLabel + ": begin"); - final long first = mSplits.get(0); - long now = first; - for (int i = 1; i < mSplits.size(); i++) { - now = mSplits.get(i); - final String splitLabel = mSplitLabels.get(i); - final long prev = mSplits.get(i - 1); - - Log.d(mTag, mLabel + ": " + (now - prev) + " ms, " + splitLabel); - } - Log.d(mTag, mLabel + ": end, " + (now - first) + " ms"); - } -} |