1 /*
   2  * Copyright (c) 2009, 2015, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 package com.sun.hotspot.tools.compiler;
  26 
  27 import java.io.PrintStream;
  28 
  29 /**
  30  * The interface of an event from a HotSpot compilation log. Events can have a
  31  * duration, e.g., a compiler {@link Phase} is an event, and so is an entire
  32  * {@link Compilation}.
  33  */
  34 public interface LogEvent {
  35     
  36     /**
  37      * The event's start time.
  38      */
  39     public double getStart();
  40 
  41     /**
  42      * The event's duration in milliseconds.
  43      */
  44     public double getElapsedTime();
  45 
  46     /**
  47      * The compilation during which this event was signalled.
  48      */
  49     public Compilation getCompilation();
  50 
  51     /**
  52      * Print the event to the given stream.
  53      */
  54     public void print(PrintStream stream, boolean printID);
  55 }