Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/runtime/Threads.java @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | bd02caa94611 |
| children | bf8517f4e4d0 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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6941466: Oracle rebranding changes for Hotspot repositories
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2 * Copyright (c) 2000, 2009, 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.win32_ia64.Win32IA64JavaThreadPDAccess; | |
| 36 import sun.jvm.hotspot.runtime.linux_x86.LinuxX86JavaThreadPDAccess; | |
| 37 import sun.jvm.hotspot.runtime.linux_ia64.LinuxIA64JavaThreadPDAccess; | |
| 38 import sun.jvm.hotspot.runtime.linux_amd64.LinuxAMD64JavaThreadPDAccess; | |
| 39 import sun.jvm.hotspot.runtime.linux_sparc.LinuxSPARCJavaThreadPDAccess; | |
| 40 import sun.jvm.hotspot.utilities.*; | |
| 41 | |
| 42 public class Threads { | |
| 43 private static JavaThreadFactory threadFactory; | |
| 44 private static AddressField threadListField; | |
| 45 private static VirtualConstructor virtualConstructor; | |
| 46 private static JavaThreadPDAccess access; | |
| 47 | |
| 48 static { | |
| 49 VM.registerVMInitializedObserver(new Observer() { | |
| 50 public void update(Observable o, Object data) { | |
| 51 initialize(VM.getVM().getTypeDataBase()); | |
| 52 } | |
| 53 }); | |
| 54 } | |
| 55 | |
| 56 private static synchronized void initialize(TypeDataBase db) { | |
| 57 Type type = db.lookupType("Threads"); | |
| 58 | |
| 59 threadListField = type.getAddressField("_thread_list"); | |
| 60 | |
| 61 // Instantiate appropriate platform-specific JavaThreadFactory | |
| 62 String os = VM.getVM().getOS(); | |
| 63 String cpu = VM.getVM().getCPU(); | |
| 64 | |
| 65 access = null; | |
| 66 // FIXME: find the platform specific PD class by reflection? | |
| 67 if (os.equals("solaris")) { | |
| 68 if (cpu.equals("sparc")) { | |
| 69 access = new SolarisSPARCJavaThreadPDAccess(); | |
| 70 } else if (cpu.equals("x86")) { | |
| 71 access = new SolarisX86JavaThreadPDAccess(); | |
| 72 } else if (cpu.equals("amd64")) { | |
| 73 access = new SolarisAMD64JavaThreadPDAccess(); | |
| 74 } | |
| 75 } else if (os.equals("win32")) { | |
| 76 if (cpu.equals("x86")) { | |
| 77 access = new Win32X86JavaThreadPDAccess(); | |
| 78 } else if (cpu.equals("amd64")) { | |
| 79 access = new Win32AMD64JavaThreadPDAccess(); | |
| 80 } else if (cpu.equals("ia64")) { | |
| 81 access = new Win32IA64JavaThreadPDAccess(); | |
| 82 } | |
| 83 } else if (os.equals("linux")) { | |
| 84 if (cpu.equals("x86")) { | |
| 85 access = new LinuxX86JavaThreadPDAccess(); | |
| 86 } else if (cpu.equals("ia64")) { | |
| 87 access = new LinuxIA64JavaThreadPDAccess(); | |
| 88 } else if (cpu.equals("amd64")) { | |
| 89 access = new LinuxAMD64JavaThreadPDAccess(); | |
| 90 } else if (cpu.equals("sparc")) { | |
| 91 access = new LinuxSPARCJavaThreadPDAccess(); | |
| 92 } | |
| 93 | |
| 94 } | |
| 95 | |
| 96 if (access == null) { | |
| 97 throw new RuntimeException("OS/CPU combination " + os + "/" + cpu + | |
| 98 " not yet supported"); | |
| 99 } | |
| 100 | |
| 101 virtualConstructor = new VirtualConstructor(db); | |
| 102 // Add mappings for all known thread types | |
| 103 virtualConstructor.addMapping("JavaThread", JavaThread.class); | |
| 104 if (!VM.getVM().isCore()) { | |
| 105 virtualConstructor.addMapping("CompilerThread", CompilerThread.class); | |
| 106 } | |
| 107 // for now, use JavaThread itself. fix it later with appropriate class if needed | |
| 108 virtualConstructor.addMapping("SurrogateLockerThread", JavaThread.class); | |
| 109 virtualConstructor.addMapping("JvmtiAgentThread", JvmtiAgentThread.class); | |
| 110 virtualConstructor.addMapping("LowMemoryDetectorThread", LowMemoryDetectorThread.class); | |
| 111 } | |
| 112 | |
| 113 public Threads() { | |
| 114 } | |
| 115 | |
| 116 /** NOTE: this returns objects of type JavaThread, CompilerThread, | |
| 117 JvmtiAgentThread, and LowMemoryDetectorThread. | |
| 118 The latter four are subclasses of the former. Most operations | |
| 119 (fetching the top frame, etc.) are only allowed to be performed on | |
| 120 a "pure" JavaThread. For this reason, {@link | |
| 121 sun.jvm.hotspot.runtime.JavaThread#isJavaThread} has been | |
| 122 changed from the definition in the VM (which returns true for | |
| 123 all of these thread types) to return true for JavaThreads and | |
| 124 false for the three subclasses. FIXME: should reconsider the | |
| 125 inheritance hierarchy; see {@link | |
| 126 sun.jvm.hotspot.runtime.JavaThread#isJavaThread}. */ | |
| 127 public JavaThread first() { | |
| 128 Address threadAddr = threadListField.getValue(); | |
| 129 if (threadAddr == null) { | |
| 130 return null; | |
| 131 } | |
| 132 | |
| 133 return createJavaThreadWrapper(threadAddr); | |
| 134 } | |
| 135 | |
| 136 /** Routine for instantiating appropriately-typed wrapper for a | |
| 137 JavaThread. Currently needs to be public for OopUtilities to | |
| 138 access it. */ | |
| 139 public JavaThread createJavaThreadWrapper(Address threadAddr) { | |
| 140 try { | |
| 141 JavaThread thread = (JavaThread)virtualConstructor.instantiateWrapperFor(threadAddr); | |
| 142 thread.setThreadPDAccess(access); | |
| 143 return thread; | |
| 144 } catch (Exception e) { | |
| 145 throw new RuntimeException("Unable to deduce type of thread from address " + threadAddr + | |
| 146 " (expected type JavaThread, CompilerThread, LowMemoryDetectorThread, JvmtiAgentThread, or SurrogateLockerThread)", e); | |
| 147 } | |
| 148 } | |
| 149 | |
| 150 /** Memory operations */ | |
| 151 public void oopsDo(AddressVisitor oopVisitor) { | |
| 152 // FIXME: add more of VM functionality | |
| 153 for (JavaThread thread = first(); thread != null; thread = thread.next()) { | |
| 154 thread.oopsDo(oopVisitor); | |
| 155 } | |
| 156 } | |
| 157 | |
| 158 // refer to Threads::owning_thread_from_monitor_owner | |
| 159 public JavaThread owningThreadFromMonitor(Address o) { | |
| 160 if (o == null) return null; | |
| 161 for (JavaThread thread = first(); thread != null; thread = thread.next()) { | |
| 162 if (o.equals(thread.threadObjectAddress())) { | |
| 163 return thread; | |
| 164 } | |
| 165 } | |
| 166 | |
| 167 for (JavaThread thread = first(); thread != null; thread = thread.next()) { | |
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168 if (thread.isLockOwned(o)) |
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169 return thread; |
| 0 | 170 } |
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171 return null; |
| 0 | 172 } |
| 173 | |
| 174 public JavaThread owningThreadFromMonitor(ObjectMonitor monitor) { | |
| 175 return owningThreadFromMonitor(monitor.owner()); | |
| 176 } | |
| 177 | |
| 178 // refer to Threads::get_pending_threads | |
| 179 // Get list of Java threads that are waiting to enter the specified monitor. | |
| 180 public List getPendingThreads(ObjectMonitor monitor) { | |
| 181 List pendingThreads = new ArrayList(); | |
| 182 for (JavaThread thread = first(); thread != null; thread = thread.next()) { | |
| 183 if (thread.isCompilerThread()) { | |
| 184 continue; | |
| 185 } | |
| 186 ObjectMonitor pending = thread.getCurrentPendingMonitor(); | |
| 187 if (monitor.equals(pending)) { | |
| 188 pendingThreads.add(thread); | |
| 189 } | |
| 190 } | |
| 191 return pendingThreads; | |
| 192 } | |
| 193 | |
| 194 // Get list of Java threads that have called Object.wait on the specified monitor. | |
| 195 public List getWaitingThreads(ObjectMonitor monitor) { | |
| 196 List pendingThreads = new ArrayList(); | |
| 197 for (JavaThread thread = first(); thread != null; thread = thread.next()) { | |
| 198 ObjectMonitor waiting = thread.getCurrentWaitingMonitor(); | |
| 199 if (monitor.equals(waiting)) { | |
| 200 pendingThreads.add(thread); | |
| 201 } | |
| 202 } | |
| 203 return pendingThreads; | |
| 204 } | |
| 205 | |
| 206 // FIXME: add other accessors | |
| 207 } |