Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/utilities/StreamMonitor.java @ 17524:89152779163c
Merge with jdk8-b132
| author | Gilles Duboscq <duboscq@ssw.jku.at> |
|---|---|
| date | Wed, 15 Oct 2014 11:59:32 +0200 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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6941466: Oracle rebranding changes for Hotspot repositories
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.utilities; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 | |
| 30 /** Reads all of the data from the given InputStream, and allows the | |
| 31 caller to wait for a given string to come in or watch for many | |
| 32 possible strings. */ | |
| 33 | |
| 34 public class StreamMonitor implements Runnable { | |
| 35 private BufferedReader input; | |
| 36 private boolean printStreamContents; | |
| 37 | |
| 38 private String waitString; | |
| 39 private boolean waitStringSeen; | |
| 40 private List triggers = new LinkedList(); | |
| 41 private List triggersSeen = new LinkedList(); | |
| 42 | |
| 43 private String prefixString; | |
| 44 private boolean printContents; | |
| 45 | |
| 46 private StringBuffer captureBuffer; | |
| 47 | |
| 48 class Trigger { | |
| 49 private String[] triggerStrings; | |
| 50 private int triggerVal; | |
| 51 | |
| 52 Trigger(String str, int val) { | |
| 53 triggerStrings = new String[] { str }; | |
| 54 triggerVal = val; | |
| 55 } | |
| 56 | |
| 57 // Hack because we don't have a regexp library yet. | |
| 58 // This requires all strings to be matched. | |
| 59 Trigger(String[] strs, int val) { | |
| 60 triggerStrings = strs; | |
| 61 triggerVal = val; | |
| 62 } | |
| 63 | |
| 64 boolean matches(String str) { | |
| 65 for (int i = 0; i < triggerStrings.length; i++) { | |
| 66 if (str.indexOf(triggerStrings[i]) == -1) { | |
| 67 return false; | |
| 68 } | |
| 69 } | |
| 70 return true; | |
| 71 } | |
| 72 | |
| 73 boolean equals(String[] strs) { | |
| 74 if (strs.length != triggerStrings.length) { | |
| 75 return false; | |
| 76 } | |
| 77 | |
| 78 for (int i = 0; i < strs.length; i++) { | |
| 79 if (!strs[i].equals(triggerStrings[i])) { | |
| 80 return false; | |
| 81 } | |
| 82 } | |
| 83 | |
| 84 return true; | |
| 85 } | |
| 86 } | |
| 87 | |
| 88 /** Equivalent to StreamMonitor(istr, null, false) */ | |
| 89 public StreamMonitor(InputStream istr) { | |
| 90 this(istr, null, false); | |
| 91 } | |
| 92 | |
| 93 public StreamMonitor(InputStream istr, String prefixString, boolean printContents) { | |
| 94 input = new BufferedReader(new InputStreamReader(istr)); | |
| 95 this.prefixString = prefixString; | |
| 96 this.printContents = printContents; | |
| 97 Thread thr = new Thread(this); | |
| 98 thr.setDaemon(true); | |
| 99 thr.start(); | |
| 100 } | |
| 101 | |
| 102 /** Adds a "trigger", which the stream watches for and, if seen, | |
| 103 reports the trigger value of via the getTriggers() method. | |
| 104 Returns true if the addition was successful, false if the string | |
| 105 was already present as a trigger. */ | |
| 106 public boolean addTrigger(String str, int value) { | |
| 107 return addTrigger(new String[] { str }, value); | |
| 108 } | |
| 109 | |
| 110 /** Adds a "trigger", which the stream watches for and, if seen, | |
| 111 reports the trigger value of via the getTriggers() method. | |
| 112 Returns true if the addition was successful, false if the string | |
| 113 was already present as a trigger. */ | |
| 114 public boolean addTrigger(String[] strs, int value) { | |
| 115 for (Iterator iter = triggers.iterator(); iter.hasNext(); ) { | |
| 116 Trigger trigger = (Trigger) iter.next(); | |
| 117 if (trigger.equals(strs)) { | |
| 118 return false; | |
| 119 } | |
| 120 } | |
| 121 Trigger trigger = new Trigger(strs, value); | |
| 122 return triggers.add(trigger); | |
| 123 } | |
| 124 | |
| 125 /** Removes a previously added trigger. Returns true if it was | |
| 126 present, false if not. */ | |
| 127 public boolean removeTrigger(String str) { | |
| 128 return removeTrigger(new String[] { str }); | |
| 129 } | |
| 130 | |
| 131 /** Removes a previously added trigger. Returns true if it was | |
| 132 present, false if not. */ | |
| 133 public boolean removeTrigger(String[] strs) { | |
| 134 for (ListIterator iter = triggers.listIterator(); iter.hasNext(); ) { | |
| 135 Trigger trigger = (Trigger) iter.next(); | |
| 136 if (trigger.equals(strs)) { | |
| 137 iter.remove(); | |
| 138 return true; | |
| 139 } | |
| 140 } | |
| 141 return false; | |
| 142 } | |
| 143 | |
| 144 /** Returns an List of java.lang.Integer objects indicating the | |
| 145 values of the triggers seen since the last call to | |
| 146 getTriggersSeen. If there were no triggers seen, returns an | |
| 147 empty list; does not return null. */ | |
| 148 public synchronized List getTriggersSeen() { | |
| 149 List tmpList = triggersSeen; | |
| 150 triggersSeen = new LinkedList(); | |
| 151 return tmpList; | |
| 152 } | |
| 153 | |
| 154 /** Waits for the specified string to come in for the given period | |
| 155 of time (measured in milliseconds). */ | |
| 156 public synchronized boolean waitFor(String str, long millis) { | |
| 157 waitString = str; | |
| 158 waitStringSeen = false; | |
| 159 try { | |
| 160 wait(millis); | |
| 161 } | |
| 162 catch (InterruptedException e) { | |
| 163 } | |
| 164 | |
| 165 waitString = null; | |
| 166 return waitStringSeen; | |
| 167 } | |
| 168 | |
| 169 public synchronized void startCapture() { | |
| 170 captureBuffer = new StringBuffer(); | |
| 171 } | |
| 172 | |
| 173 public synchronized String stopCapture() { | |
| 174 String ret = captureBuffer.toString(); | |
| 175 captureBuffer = null; | |
| 176 return ret; | |
| 177 } | |
| 178 | |
| 179 public void run() { | |
| 180 byte[] buf = new byte[10240]; | |
| 181 boolean shouldContinue = true; | |
| 182 | |
| 183 try { | |
| 184 do { | |
| 185 String str = input.readLine(); | |
| 186 if (str == null) { | |
| 187 shouldContinue = false; | |
| 188 } else { | |
| 189 if (printContents) { | |
| 190 System.err.println(prefixString + ": " + str); | |
| 191 } | |
| 192 synchronized (this) { | |
| 193 | |
| 194 if (captureBuffer != null) { | |
| 195 captureBuffer.append(str); | |
| 196 captureBuffer.append("\n"); | |
| 197 } | |
| 198 | |
| 199 // Check wait string | |
| 200 if ((waitString != null) && | |
| 201 (str.indexOf(waitString) != -1)) { | |
| 202 waitStringSeen = true; | |
| 203 notifyAll(); | |
| 204 } | |
| 205 | |
| 206 // Check all triggers | |
| 207 for (Iterator iter = triggers.iterator(); iter.hasNext(); ) { | |
| 208 Trigger trigger = (Trigger) iter.next(); | |
| 209 if (trigger.matches(str)) { | |
| 210 triggersSeen.add(new Integer(trigger.triggerVal)); | |
| 211 } | |
| 212 } | |
| 213 } | |
| 214 } | |
| 215 } while (shouldContinue); | |
| 216 } | |
| 217 catch (IOException e) { | |
| 218 } | |
| 219 | |
| 220 System.err.print("StreamMonitor "); | |
| 221 if (prefixString != null) { | |
| 222 System.err.print("\"" + prefixString + "\" "); | |
| 223 } | |
| 224 System.err.println("exiting"); | |
| 225 } | |
| 226 } |