Mercurial > hg > truffle
annotate agent/test/jdi/sagclient.java @ 20543:e7d0505c8a30
8059758: Footprint regressions with JDK-8038423
Summary: Changes in JDK-8038423 always initialize (zero out) virtual memory used for auxiliary data structures. This causes a footprint regression for G1 in startup benchmarks. This is because they do not touch that memory at all, so the operating system does not actually commit these pages. The fix is to, if the initialization value of the data structures matches the default value of just committed memory (=0), do not do anything.
Reviewed-by: jwilhelm, brutisso
| author | tschatzl |
|---|---|
| date | Fri, 10 Oct 2014 15:51:58 +0200 |
| parents | c18cbe5936b8 |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2002, 2004, 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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c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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c18cbe5936b8
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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c18cbe5936b8
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21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 import com.sun.jdi.*; | |
| 26 import com.sun.jdi.connect.*; | |
| 27 | |
| 28 import java.util.Map; | |
| 29 import java.util.List; | |
| 30 import java.util.Iterator; | |
| 31 import java.io.IOException; | |
| 32 | |
| 33 public class sagclient { | |
| 34 static AttachingConnector myCoreConn; | |
| 35 static AttachingConnector myPIDConn; | |
| 36 static AttachingConnector myDbgSvrConn; | |
| 37 static VirtualMachine vm; | |
| 38 static VirtualMachineManager vmmgr; | |
| 39 | |
| 40 public static void println(String msg) { | |
| 41 System.out.println("jj: " + msg); | |
| 42 } | |
| 43 | |
| 44 | |
| 45 public static void main(String args[]) { | |
| 46 vmmgr = Bootstrap.virtualMachineManager(); | |
| 47 List attachingConnectors = vmmgr.attachingConnectors(); | |
| 48 if (attachingConnectors.isEmpty()) { | |
| 49 System.err.println( "ERROR: No attaching connectors"); | |
| 50 return; | |
| 51 } | |
| 52 Iterator myIt = attachingConnectors.iterator(); | |
| 53 while (myIt.hasNext()) { | |
| 54 AttachingConnector tmpCon = (AttachingConnector)myIt.next(); | |
| 55 if (tmpCon.name().equals( | |
| 56 "sun.jvm.hotspot.jdi.SACoreAttachingConnector")) { | |
| 57 myCoreConn = tmpCon; | |
| 58 } else if (tmpCon.name().equals( | |
| 59 "sun.jvm.hotspot.jdi.SAPIDAttachingConnector")) { | |
| 60 myPIDConn = tmpCon; | |
| 61 } else if (tmpCon.name().equals( | |
| 62 "sun.jvm.hotspot.jdi.SADebugServerAttachingConnector")) { | |
| 63 myDbgSvrConn = tmpCon; | |
| 64 } | |
| 65 } | |
| 66 String execPath = null; | |
| 67 String pidText = null; | |
| 68 String coreFilename = null; | |
| 69 String debugServer = null; | |
| 70 int pid = 0; | |
| 71 switch (args.length) { | |
| 72 case (0): | |
| 73 break; | |
| 74 case (1): | |
| 75 // If all numbers, it is a PID to attach to | |
| 76 // Else, it is a pathname to a .../bin/java for a core file. | |
| 77 try { | |
| 78 pidText = args[0]; | |
| 79 pid = Integer.parseInt(pidText); | |
| 80 System.out.println( "pid: " + pid); | |
| 81 vm = attachPID(pid); | |
| 82 } catch (NumberFormatException e) { | |
| 83 System.out.println("trying remote server .."); | |
| 84 debugServer = args[0]; | |
| 85 System.out.println( "remote server: " + debugServer); | |
| 86 vm = attachDebugServer(debugServer); | |
| 87 } | |
| 88 break; | |
| 89 | |
| 90 case (2): | |
| 91 execPath = args[0]; | |
| 92 coreFilename = args[1]; | |
| 93 System.out.println( "jdk: " + execPath); | |
| 94 System.out.println( "core: " + coreFilename); | |
| 95 vm = attachCore(coreFilename, execPath); | |
| 96 break; | |
| 97 } | |
| 98 | |
| 99 | |
| 100 if (vm != null) { | |
| 101 System.out.println("sagclient: attached ok!"); | |
| 102 sagdoit mine = new sagdoit(vm); | |
| 103 mine.doAll(); | |
| 104 vm.dispose(); | |
| 105 } | |
| 106 } | |
| 107 | |
| 108 private static VirtualMachine attachCore(String coreFilename, String execPath) { | |
| 109 Map connArgs = myCoreConn.defaultArguments(); | |
| 110 System.out.println("connArgs = " + connArgs); | |
| 111 VirtualMachine vm; | |
| 112 Connector.StringArgument connArg = (Connector.StringArgument)connArgs.get("core"); | |
| 113 connArg.setValue(coreFilename); | |
| 114 | |
| 115 connArg = (Connector.StringArgument)connArgs.get("javaExecutable"); | |
| 116 connArg.setValue(execPath); | |
| 117 try { | |
| 118 vm = myCoreConn.attach(connArgs); | |
| 119 } catch (IOException ee) { | |
| 120 System.err.println("ERROR: myCoreConn.attach got IO Exception:" + ee); | |
| 121 vm = null; | |
| 122 } catch (IllegalConnectorArgumentsException ee) { | |
| 123 System.err.println("ERROR: myCoreConn.attach got illegal args exception:" + ee); | |
| 124 vm = null; | |
| 125 } | |
| 126 return vm; | |
| 127 } | |
| 128 | |
| 129 private static VirtualMachine attachPID(int pid) { | |
| 130 Map connArgs = myPIDConn.defaultArguments(); | |
| 131 System.out.println("connArgs = " + connArgs); | |
| 132 VirtualMachine vm; | |
| 133 Connector.StringArgument connArg = (Connector.StringArgument)connArgs.get("pid"); | |
| 134 connArg.setValue(Integer.toString(pid)); | |
| 135 | |
| 136 try { | |
| 137 vm = myPIDConn.attach(connArgs); | |
| 138 } catch (IOException ee) { | |
| 139 System.err.println("ERROR: myPIDConn.attach got IO Exception:" + ee); | |
| 140 vm = null; | |
| 141 } catch (IllegalConnectorArgumentsException ee) { | |
| 142 System.err.println("ERROR: myPIDConn.attach got illegal args exception:" + ee); | |
| 143 vm = null; | |
| 144 } | |
| 145 return vm; | |
| 146 } | |
| 147 | |
| 148 | |
| 149 private static VirtualMachine attachDebugServer(String debugServer) { | |
| 150 Map connArgs = myDbgSvrConn.defaultArguments(); | |
| 151 System.out.println("connArgs = " + connArgs); | |
| 152 VirtualMachine vm; | |
| 153 Connector.StringArgument connArg = (Connector.StringArgument)connArgs.get("debugServerName"); | |
| 154 connArg.setValue(debugServer); | |
| 155 | |
| 156 try { | |
| 157 vm = myDbgSvrConn.attach(connArgs); | |
| 158 } catch (IOException ee) { | |
| 159 System.err.println("ERROR: myDbgSvrConn.attach got IO Exception:" + ee); | |
| 160 vm = null; | |
| 161 } catch (IllegalConnectorArgumentsException ee) { | |
| 162 System.err.println("ERROR: myDbgSvrConn.attach got illegal args exception:" + ee); | |
| 163 vm = null; | |
| 164 } | |
| 165 return vm; | |
| 166 } | |
| 167 } |