| /* |
| * Copyright 2012-present Facebook, Inc. |
| * |
| * 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.facebook.buck.debug; |
| |
| import com.google.common.eventbus.EventBus; |
| |
| import java.io.PrintStream; |
| |
| /** |
| * Tracer for debugging slow points in code. Based on Google Closure's goog.debug.Tracer. |
| */ |
| public final class Tracer { |
| |
| private final long id; |
| |
| private Tracer(String comment, String type) { |
| id = ThreadTrace.threadTracer.get().startTracer(comment, type); |
| } |
| |
| public static Tracer startTracer(String comment) { |
| return new Tracer(comment, null); |
| } |
| |
| public static Tracer startTracer(String comment, String type) { |
| return new Tracer(comment, type); |
| } |
| |
| public static void addComment(String comment) { |
| ThreadTrace.threadTracer.get().addComment(comment, null); |
| } |
| |
| public static void addComment(String comment, String type) { |
| ThreadTrace.threadTracer.get().addComment(comment, type); |
| } |
| |
| public static void initCurrentTrace(long defaultThreshold, EventBus eventBus) { |
| ThreadTrace.initCurrentTrace(defaultThreshold, eventBus); |
| } |
| |
| public static void clearCurrentTrace() { |
| ThreadTrace.clearCurrentTrace(); |
| } |
| |
| public static void clearAndPrintCurrentTrace(PrintStream stream) { |
| ThreadTrace.clearAndPrintCurrentTrace(stream); |
| } |
| |
| public static String getFormattedThreadTrace() { |
| return ThreadTrace.threadTracer.get().getFormattedTrace(); |
| } |
| |
| public long stop() { |
| return ThreadTrace.threadTracer.get().stopTracer(id, null); |
| } |
| |
| public void stop(long silenceThresholdParam) { |
| ThreadTrace.threadTracer.get().stopTracer(id, silenceThresholdParam); |
| } |
| } |