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annotate agent/src/share/classes/sun/jvm/hotspot/runtime/Threads.java @ 12226:7944aba7ba41
8015107: NPG: Use consistent naming for metaspace concepts
Reviewed-by: coleenp, mgerdin, hseigel
| author | ehelin |
|---|---|
| date | Mon, 12 Aug 2013 17:37:02 +0200 |
| parents | 39432a1cefdd |
| children |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 8750 | 2 * Copyright (c) 2000, 2013, 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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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.runtime; | |
| 26 | |
| 27 import java.util.*; | |
| 28 import sun.jvm.hotspot.debugger.*; | |
| 29 import sun.jvm.hotspot.types.*; | |
| 30 import sun.jvm.hotspot.runtime.solaris_sparc.SolarisSPARCJavaThreadPDAccess; | |
| 31 import sun.jvm.hotspot.runtime.solaris_x86.SolarisX86JavaThreadPDAccess; | |
| 32 import sun.jvm.hotspot.runtime.solaris_amd64.SolarisAMD64JavaThreadPDAccess; | |
| 33 import sun.jvm.hotspot.runtime.win32_amd64.Win32AMD64JavaThreadPDAccess; | |
| 34 import sun.jvm.hotspot.runtime.win32_x86.Win32X86JavaThreadPDAccess; | |
| 35 import sun.jvm.hotspot.runtime.linux_x86.LinuxX86JavaThreadPDAccess; | |
| 36 import sun.jvm.hotspot.runtime.linux_amd64.LinuxAMD64JavaThreadPDAccess; | |
| 37 import sun.jvm.hotspot.runtime.linux_sparc.LinuxSPARCJavaThreadPDAccess; | |
| 3960 | 38 import sun.jvm.hotspot.runtime.bsd_x86.BsdX86JavaThreadPDAccess; |
| 39 import sun.jvm.hotspot.runtime.bsd_amd64.BsdAMD64JavaThreadPDAccess; | |
| 0 | 40 import sun.jvm.hotspot.utilities.*; |
| 41 | |
| 42 public class Threads { | |
| 43 private static JavaThreadFactory threadFactory; | |
| 44 private static AddressField threadListField; | |
| 8750 | 45 private static CIntegerField numOfThreadsField; |
| 0 | 46 private static VirtualConstructor virtualConstructor; |
| 47 private static JavaThreadPDAccess access; | |
| 48 | |
| 49 static { | |
| 50 VM.registerVMInitializedObserver(new Observer() { | |
| 51 public void update(Observable o, Object data) { | |
| 52 initialize(VM.getVM().getTypeDataBase()); | |
| 53 } | |
| 54 }); | |
| 55 } | |
| 56 | |
| 57 private static synchronized void initialize(TypeDataBase db) { | |
| 58 Type type = db.lookupType("Threads"); | |
| 59 | |
| 60 threadListField = type.getAddressField("_thread_list"); | |
| 8750 | 61 numOfThreadsField = type.getCIntegerField("_number_of_threads"); |
| 0 | 62 |
| 63 // Instantiate appropriate platform-specific JavaThreadFactory | |
| 64 String os = VM.getVM().getOS(); | |
| 65 String cpu = VM.getVM().getCPU(); | |
| 66 | |
| 67 access = null; | |
| 68 // FIXME: find the platform specific PD class by reflection? | |
| 69 if (os.equals("solaris")) { | |
| 70 if (cpu.equals("sparc")) { | |
| 71 access = new SolarisSPARCJavaThreadPDAccess(); | |
| 72 } else if (cpu.equals("x86")) { | |
| 73 access = new SolarisX86JavaThreadPDAccess(); | |
| 74 } else if (cpu.equals("amd64")) { | |
| 75 access = new SolarisAMD64JavaThreadPDAccess(); | |
| 76 } | |
| 77 } else if (os.equals("win32")) { | |
| 78 if (cpu.equals("x86")) { | |
| 79 access = new Win32X86JavaThreadPDAccess(); | |
| 80 } else if (cpu.equals("amd64")) { | |
| 81 access = new Win32AMD64JavaThreadPDAccess(); | |
| 82 } | |
| 83 } else if (os.equals("linux")) { | |
| 84 if (cpu.equals("x86")) { | |
| 85 access = new LinuxX86JavaThreadPDAccess(); | |
| 86 } else if (cpu.equals("amd64")) { | |
| 87 access = new LinuxAMD64JavaThreadPDAccess(); | |
| 88 } else if (cpu.equals("sparc")) { | |
| 89 access = new LinuxSPARCJavaThreadPDAccess(); | |
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90 } else { |
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91 try { |
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92 access = (JavaThreadPDAccess) |
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93 Class.forName("sun.jvm.hotspot.runtime.linux_" + |
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94 cpu.toLowerCase() + ".Linux" + cpu.toUpperCase() + |
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95 "JavaThreadPDAccess").newInstance(); |
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96 } catch (Exception e) { |
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97 throw new RuntimeException("OS/CPU combination " + os + "/" + cpu + |
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98 " not yet supported"); |
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99 } |
| 0 | 100 } |
| 3960 | 101 } else if (os.equals("bsd")) { |
| 102 if (cpu.equals("x86")) { | |
| 103 access = new BsdX86JavaThreadPDAccess(); | |
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104 } else if (cpu.equals("amd64") || cpu.equals("x86_64")) { |
| 3960 | 105 access = new BsdAMD64JavaThreadPDAccess(); |
| 106 } | |
| 8750 | 107 } else if (os.equals("darwin")) { |
| 108 if (cpu.equals("amd64") || cpu.equals("x86_64")) { | |
| 109 access = new BsdAMD64JavaThreadPDAccess(); | |
| 110 } | |
| 0 | 111 } |
| 112 | |
| 113 if (access == null) { | |
| 114 throw new RuntimeException("OS/CPU combination " + os + "/" + cpu + | |
| 115 " not yet supported"); | |
| 116 } | |
| 117 | |
| 118 virtualConstructor = new VirtualConstructor(db); | |
| 119 // Add mappings for all known thread types | |
| 120 virtualConstructor.addMapping("JavaThread", JavaThread.class); | |
| 121 if (!VM.getVM().isCore()) { | |
| 122 virtualConstructor.addMapping("CompilerThread", CompilerThread.class); | |
| 123 } | |
| 124 // for now, use JavaThread itself. fix it later with appropriate class if needed | |
| 125 virtualConstructor.addMapping("SurrogateLockerThread", JavaThread.class); | |
| 126 virtualConstructor.addMapping("JvmtiAgentThread", JvmtiAgentThread.class); | |
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127 virtualConstructor.addMapping("ServiceThread", ServiceThread.class); |
| 0 | 128 } |
| 129 | |
| 130 public Threads() { | |
| 131 } | |
| 132 | |
| 133 /** NOTE: this returns objects of type JavaThread, CompilerThread, | |
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134 JvmtiAgentThread, and ServiceThread. |
| 0 | 135 The latter four are subclasses of the former. Most operations |
| 136 (fetching the top frame, etc.) are only allowed to be performed on | |
| 137 a "pure" JavaThread. For this reason, {@link | |
| 138 sun.jvm.hotspot.runtime.JavaThread#isJavaThread} has been | |
| 139 changed from the definition in the VM (which returns true for | |
| 140 all of these thread types) to return true for JavaThreads and | |
| 141 false for the three subclasses. FIXME: should reconsider the | |
| 142 inheritance hierarchy; see {@link | |
| 143 sun.jvm.hotspot.runtime.JavaThread#isJavaThread}. */ | |
| 144 public JavaThread first() { | |
| 145 Address threadAddr = threadListField.getValue(); | |
| 146 if (threadAddr == null) { | |
| 147 return null; | |
| 148 } | |
| 149 | |
| 150 return createJavaThreadWrapper(threadAddr); | |
| 151 } | |
| 152 | |
| 8750 | 153 public int getNumberOfThreads() { |
| 154 return (int) numOfThreadsField.getValue(); | |
| 155 } | |
| 156 | |
| 0 | 157 /** Routine for instantiating appropriately-typed wrapper for a |
| 158 JavaThread. Currently needs to be public for OopUtilities to | |
| 159 access it. */ | |
| 160 public JavaThread createJavaThreadWrapper(Address threadAddr) { | |
| 161 try { | |
| 162 JavaThread thread = (JavaThread)virtualConstructor.instantiateWrapperFor(threadAddr); | |
| 163 thread.setThreadPDAccess(access); | |
| 164 return thread; | |
| 165 } catch (Exception e) { | |
| 166 throw new RuntimeException("Unable to deduce type of thread from address " + threadAddr + | |
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167 " (expected type JavaThread, CompilerThread, ServiceThread, JvmtiAgentThread, or SurrogateLockerThread)", e); |
| 0 | 168 } |
| 169 } | |
| 170 | |
| 171 /** Memory operations */ | |
| 172 public void oopsDo(AddressVisitor oopVisitor) { | |
| 173 // FIXME: add more of VM functionality | |
| 174 for (JavaThread thread = first(); thread != null; thread = thread.next()) { | |
| 175 thread.oopsDo(oopVisitor); | |
| 176 } | |
| 177 } | |
| 178 | |
| 179 // refer to Threads::owning_thread_from_monitor_owner | |
| 180 public JavaThread owningThreadFromMonitor(Address o) { | |
| 181 if (o == null) return null; | |
| 182 for (JavaThread thread = first(); thread != null; thread = thread.next()) { | |
| 183 if (o.equals(thread.threadObjectAddress())) { | |
| 184 return thread; | |
| 185 } | |
| 186 } | |
| 187 | |
| 188 for (JavaThread thread = first(); thread != null; thread = thread.next()) { | |
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189 if (thread.isLockOwned(o)) |
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190 return thread; |
| 0 | 191 } |
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192 return null; |
| 0 | 193 } |
| 194 | |
| 195 public JavaThread owningThreadFromMonitor(ObjectMonitor monitor) { | |
| 196 return owningThreadFromMonitor(monitor.owner()); | |
| 197 } | |
| 198 | |
| 199 // refer to Threads::get_pending_threads | |
| 200 // Get list of Java threads that are waiting to enter the specified monitor. | |
| 201 public List getPendingThreads(ObjectMonitor monitor) { | |
| 202 List pendingThreads = new ArrayList(); | |
| 203 for (JavaThread thread = first(); thread != null; thread = thread.next()) { | |
| 204 if (thread.isCompilerThread()) { | |
| 205 continue; | |
| 206 } | |
| 207 ObjectMonitor pending = thread.getCurrentPendingMonitor(); | |
| 208 if (monitor.equals(pending)) { | |
| 209 pendingThreads.add(thread); | |
| 210 } | |
| 211 } | |
| 212 return pendingThreads; | |
| 213 } | |
| 214 | |
| 215 // Get list of Java threads that have called Object.wait on the specified monitor. | |
| 216 public List getWaitingThreads(ObjectMonitor monitor) { | |
| 217 List pendingThreads = new ArrayList(); | |
| 218 for (JavaThread thread = first(); thread != null; thread = thread.next()) { | |
| 219 ObjectMonitor waiting = thread.getCurrentWaitingMonitor(); | |
| 220 if (monitor.equals(waiting)) { | |
| 221 pendingThreads.add(thread); | |
| 222 } | |
| 223 } | |
| 224 return pendingThreads; | |
| 225 } | |
| 226 | |
| 227 // FIXME: add other accessors | |
| 228 } |