Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/code/CodeBlob.java @ 1644:2a47bd84841f
6965184: possible races in make_not_entrant_or_zombie
Reviewed-by: kvn
| author | never |
|---|---|
| date | Thu, 08 Jul 2010 14:29:44 -0700 |
| parents | e9ff18c4ace7 |
| children | 3e8fbc61cee8 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2000, 2005, 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.code; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 | |
| 30 import sun.jvm.hotspot.asm.x86.*; | |
| 31 import sun.jvm.hotspot.compiler.*; | |
| 32 import sun.jvm.hotspot.debugger.*; | |
| 33 import sun.jvm.hotspot.runtime.*; | |
| 34 import sun.jvm.hotspot.types.*; | |
| 35 import sun.jvm.hotspot.utilities.*; | |
| 36 | |
| 37 public class CodeBlob extends VMObject { | |
| 38 private static AddressField nameField; | |
| 39 private static CIntegerField sizeField; | |
| 40 private static CIntegerField headerSizeField; | |
| 41 private static CIntegerField relocationSizeField; | |
| 42 private static CIntegerField instructionsOffsetField; | |
| 43 private static CIntegerField frameCompleteOffsetField; | |
| 44 private static CIntegerField dataOffsetField; | |
| 45 private static CIntegerField frameSizeField; | |
| 46 private static AddressField oopMapsField; | |
| 47 | |
| 48 // Only used by server compiler on x86; computed over in SA rather | |
| 49 // than relying on computation in target VM | |
| 50 private static final int NOT_YET_COMPUTED = -2; | |
| 51 private static final int UNDEFINED = -1; | |
| 52 private int linkOffset = NOT_YET_COMPUTED; | |
| 53 private static int matcherInterpreterFramePointerReg; | |
| 54 | |
| 55 static { | |
| 56 VM.registerVMInitializedObserver(new Observer() { | |
| 57 public void update(Observable o, Object data) { | |
| 58 initialize(VM.getVM().getTypeDataBase()); | |
| 59 } | |
| 60 }); | |
| 61 } | |
| 62 | |
| 63 private static void initialize(TypeDataBase db) { | |
| 64 Type type = db.lookupType("CodeBlob"); | |
| 65 | |
| 66 nameField = type.getAddressField("_name"); | |
| 67 sizeField = type.getCIntegerField("_size"); | |
| 68 headerSizeField = type.getCIntegerField("_header_size"); | |
| 69 relocationSizeField = type.getCIntegerField("_relocation_size"); | |
| 70 frameCompleteOffsetField = type.getCIntegerField("_frame_complete_offset"); | |
| 71 instructionsOffsetField = type.getCIntegerField("_instructions_offset"); | |
| 72 dataOffsetField = type.getCIntegerField("_data_offset"); | |
| 73 frameSizeField = type.getCIntegerField("_frame_size"); | |
| 74 oopMapsField = type.getAddressField("_oop_maps"); | |
| 75 | |
| 76 if (VM.getVM().isServerCompiler()) { | |
| 77 matcherInterpreterFramePointerReg = | |
| 78 db.lookupIntConstant("Matcher::interpreter_frame_pointer_reg").intValue(); | |
| 79 } | |
| 80 } | |
| 81 | |
| 82 public CodeBlob(Address addr) { | |
| 83 super(addr); | |
| 84 } | |
| 85 | |
| 86 // Typing | |
| 87 public boolean isBufferBlob() { return false; } | |
| 88 public boolean isNMethod() { return false; } | |
| 89 public boolean isRuntimeStub() { return false; } | |
| 90 public boolean isDeoptimizationStub() { return false; } | |
| 91 public boolean isUncommonTrapStub() { return false; } | |
| 92 public boolean isExceptionStub() { return false; } | |
| 93 public boolean isSafepointStub() { return false; } | |
| 94 | |
| 95 // Fine grain nmethod support: isNmethod() == isJavaMethod() || isNativeMethod() || isOSRMethod() | |
| 96 public boolean isJavaMethod() { return false; } | |
| 97 public boolean isNativeMethod() { return false; } | |
| 98 /** On-Stack Replacement method */ | |
| 99 public boolean isOSRMethod() { return false; } | |
| 100 | |
| 101 // Boundaries | |
| 102 public Address headerBegin() { | |
| 103 return addr; | |
| 104 } | |
| 105 | |
| 106 public Address headerEnd() { | |
| 107 return addr.addOffsetTo(headerSizeField.getValue(addr)); | |
| 108 } | |
| 109 | |
| 110 // FIXME: add RelocInfo | |
| 111 // public RelocInfo relocationBegin(); | |
| 112 // public RelocInfo relocationEnd(); | |
| 113 | |
| 114 public Address instructionsBegin() { | |
| 115 return headerBegin().addOffsetTo(instructionsOffsetField.getValue(addr)); | |
| 116 } | |
| 117 | |
| 118 public Address instructionsEnd() { | |
| 119 return headerBegin().addOffsetTo(dataOffsetField.getValue(addr)); | |
| 120 } | |
| 121 | |
| 122 public Address dataBegin() { | |
| 123 return headerBegin().addOffsetTo(dataOffsetField.getValue(addr)); | |
| 124 } | |
| 125 | |
| 126 public Address dataEnd() { | |
| 127 return headerBegin().addOffsetTo(sizeField.getValue(addr)); | |
| 128 } | |
| 129 | |
| 130 // Offsets | |
| 131 public int getRelocationOffset() { return (int) headerSizeField.getValue(addr); } | |
| 132 public int getInstructionsOffset() { return (int) instructionsOffsetField.getValue(addr); } | |
| 133 public int getDataOffset() { return (int) dataOffsetField.getValue(addr); } | |
| 134 | |
| 135 // Sizes | |
| 136 public int getSize() { return (int) sizeField.getValue(addr); } | |
| 137 public int getHeaderSize() { return (int) headerSizeField.getValue(addr); } | |
| 138 // FIXME: add getRelocationSize() | |
| 139 public int getInstructionsSize() { return (int) instructionsEnd().minus(instructionsBegin()); } | |
| 140 public int getDataSize() { return (int) dataEnd().minus(dataBegin()); } | |
| 141 | |
| 142 // Containment | |
| 143 public boolean blobContains(Address addr) { return headerBegin().lessThanOrEqual(addr) && dataEnd().greaterThan(addr); } | |
| 144 // FIXME: add relocationContains | |
| 145 public boolean instructionsContains(Address addr) { return instructionsBegin().lessThanOrEqual(addr) && instructionsEnd().greaterThan(addr); } | |
| 146 public boolean dataContains(Address addr) { return dataBegin().lessThanOrEqual(addr) && dataEnd().greaterThan(addr); } | |
| 147 public boolean contains(Address addr) { return instructionsContains(addr); } | |
| 148 public boolean isFrameCompleteAt(Address a) { return instructionsContains(a) && a.minus(instructionsBegin()) >= frameCompleteOffsetField.getValue(addr); } | |
| 149 | |
| 150 // Reclamation support (really only used by the nmethods, but in order to get asserts to work | |
| 151 // in the CodeCache they are defined virtual here) | |
| 152 public boolean isZombie() { return false; } | |
| 153 public boolean isLockedByVM() { return false; } | |
| 154 | |
| 155 /** OopMap for frame; can return null if none available */ | |
| 156 public OopMapSet getOopMaps() { | |
| 157 Address oopMapsAddr = oopMapsField.getValue(addr); | |
| 158 if (oopMapsAddr == null) { | |
| 159 return null; | |
| 160 } | |
| 161 return new OopMapSet(oopMapsAddr); | |
| 162 } | |
| 163 // FIXME: not yet implementable | |
| 164 // void set_oop_maps(OopMapSet* p); | |
| 165 | |
| 166 public OopMap getOopMapForReturnAddress(Address returnAddress, boolean debugging) { | |
| 167 Address pc = returnAddress; | |
| 168 if (Assert.ASSERTS_ENABLED) { | |
| 169 Assert.that(getOopMaps() != null, "nope"); | |
| 170 } | |
| 171 return getOopMaps().findMapAtOffset(pc.minus(instructionsBegin()), debugging); | |
| 172 } | |
| 173 | |
| 174 // virtual void preserve_callee_argument_oops(frame fr, const RegisterMap* reg_map, void f(oop*)) { ShouldNotReachHere(); } | |
| 175 // FIXME; | |
| 176 | |
| 177 /** NOTE: this returns a size in BYTES in this system! */ | |
| 178 public long getFrameSize() { | |
| 179 return VM.getVM().getAddressSize() * frameSizeField.getValue(addr); | |
| 180 } | |
| 181 | |
| 182 // Returns true, if the next frame is responsible for GC'ing oops passed as arguments | |
| 183 public boolean callerMustGCArguments(JavaThread thread) { return false; } | |
| 184 | |
| 185 public String getName() { | |
| 186 return CStringUtilities.getString(nameField.getValue(addr)); | |
| 187 } | |
| 188 | |
| 189 // FIXME: NOT FINISHED | |
| 190 | |
| 191 // FIXME: add more accessors | |
| 192 | |
| 193 public void print() { | |
| 194 printOn(System.out); | |
| 195 } | |
| 196 | |
| 197 public void printOn(PrintStream tty) { | |
| 198 tty.print(getName()); | |
| 199 printComponentsOn(tty); | |
| 200 } | |
| 201 | |
| 202 protected void printComponentsOn(PrintStream tty) { | |
| 203 tty.println(" instructions: [" + instructionsBegin() + ", " + instructionsEnd() + "), " + | |
| 204 " data: [" + dataBegin() + ", " + dataEnd() + "), " + | |
| 205 " frame size: " + getFrameSize()); | |
| 206 } | |
| 207 } |