| /* |
| * Copyright 2021 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.server.am; |
| |
| import android.os.Trace; |
| |
| import java.util.UUID; |
| |
| /** |
| * Adds a unique id to a trace. |
| * |
| * @hide |
| */ |
| public class TraceErrorLogger { |
| private static final String COUNTER_PREFIX = "ErrorId:"; |
| private static final int PLACEHOLDER_VALUE = 1; |
| |
| public boolean isAddErrorIdEnabled() { |
| return true; |
| } |
| |
| /** |
| * Generates a unique id with which to tag a trace. |
| */ |
| public UUID generateErrorId() { |
| return UUID.randomUUID(); |
| } |
| |
| /** |
| * Pushes a counter containing a unique id and a label {@link #COUNTER_PREFIX} so that traces |
| * can be uniquely identified. We also add the same id to the dropbox entry of the error, so |
| * that we can join the trace and the error server-side. |
| * |
| * @param processName The name of the ANRing process. |
| * @param pid The pid of the ANRing process. |
| * @param errorId The unique id with which to tag the trace. |
| */ |
| public void addProcessInfoAndErrorIdToTrace(String processName, int pid, UUID errorId) { |
| Trace.traceCounter(Trace.TRACE_TAG_ACTIVITY_MANAGER, |
| COUNTER_PREFIX + processName + " " + pid + "#" + errorId.toString(), |
| PLACEHOLDER_VALUE); |
| } |
| |
| /** |
| * Pushes a counter containing an ANR/Watchdog subject and a unique id so that the subject |
| * can be uniquely identified. |
| * |
| * @param subject The subject to include in the trace. |
| * @param errorId The unique id with which to tag the trace. |
| */ |
| public void addSubjectToTrace(String subject, UUID errorId) { |
| Trace.traceCounter(Trace.TRACE_TAG_ACTIVITY_MANAGER, |
| String.format("Subject(for ErrorId %s):%s", errorId.toString(), subject), |
| PLACEHOLDER_VALUE); |
| } |
| } |