77 lines
2.1 KiB
Java
77 lines
2.1 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License
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*/
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package android.os;
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import android.util.Log;
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import android.util.Size;
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import com.android.internal.util.FastPrintWriter;
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import java.io.FileOutputStream;
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import java.io.PrintWriter;
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import java.util.HashMap;
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import java.util.Map;
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/**
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* Class used to track binder transactions. It indexes the transactions by the stack trace.
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*
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* @hide
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*/
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public class TransactionTracker {
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private Map<String, Long> mTraces;
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private void resetTraces() {
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synchronized (this) {
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mTraces = new HashMap<String, Long>();
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}
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}
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TransactionTracker() {
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resetTraces();
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}
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public void addTrace(Throwable tr) {
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String trace = Log.getStackTraceString(tr);
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synchronized (this) {
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if (mTraces.containsKey(trace)) {
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mTraces.put(trace, mTraces.get(trace) + 1);
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} else {
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mTraces.put(trace, Long.valueOf(1));
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}
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}
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}
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public void writeTracesToFile(ParcelFileDescriptor fd) {
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if (mTraces.isEmpty()) {
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return;
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}
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PrintWriter pw = new FastPrintWriter(new FileOutputStream(fd.getFileDescriptor()));
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synchronized (this) {
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for (String trace : mTraces.keySet()) {
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pw.println("Count: " + mTraces.get(trace));
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pw.println("Trace: " + trace);
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pw.println();
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}
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}
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pw.flush();
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}
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public void clearTraces(){
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resetTraces();
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}
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}
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