Mercurial > hg > graal-compiler
annotate agent/src/share/classes/sun/jvm/hotspot/code/PCDesc.java @ 989:148e5441d916
6863023: need non-perm oops in code cache for JSR 292
Summary: Make a special root-list for those few nmethods which might contain non-perm oops.
Reviewed-by: twisti, kvn, never, jmasa, ysr
| author | jrose |
|---|---|
| date | Tue, 15 Sep 2009 21:53:47 -0700 |
| parents | 72088be4b386 |
| children | 873ec3787992 |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright 2000-2009 Sun Microsystems, Inc. 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 * | |
| 19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
| 20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
| 21 * have any questions. | |
| 22 * | |
| 23 */ | |
| 24 | |
| 25 package sun.jvm.hotspot.code; | |
| 26 | |
| 27 import java.io.*; | |
| 28 import java.util.*; | |
| 29 import sun.jvm.hotspot.debugger.*; | |
| 30 import sun.jvm.hotspot.runtime.*; | |
| 31 import sun.jvm.hotspot.types.*; | |
| 32 | |
| 33 /** PcDescs map a physical PC (given as offset from start of nmethod) | |
| 34 to the corresponding source scope and byte code index. */ | |
| 35 | |
| 36 public class PCDesc extends VMObject { | |
| 37 private static CIntegerField pcOffsetField; | |
| 38 private static CIntegerField scopeDecodeOffsetField; | |
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39 private static CIntegerField pcFlagsField; |
| 0 | 40 |
| 41 static { | |
| 42 VM.registerVMInitializedObserver(new Observer() { | |
| 43 public void update(Observable o, Object data) { | |
| 44 initialize(VM.getVM().getTypeDataBase()); | |
| 45 } | |
| 46 }); | |
| 47 } | |
| 48 | |
| 49 private static void initialize(TypeDataBase db) { | |
| 50 Type type = db.lookupType("PcDesc"); | |
| 51 | |
| 52 pcOffsetField = type.getCIntegerField("_pc_offset"); | |
| 53 scopeDecodeOffsetField = type.getCIntegerField("_scope_decode_offset"); | |
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54 pcFlagsField = type.getCIntegerField("_flags"); |
| 0 | 55 } |
| 56 | |
| 57 public PCDesc(Address addr) { | |
| 58 super(addr); | |
| 59 } | |
| 60 | |
| 61 // FIXME: add additional constructor probably needed for ScopeDesc::sender() | |
| 62 | |
| 63 public int getPCOffset() { | |
| 64 return (int) pcOffsetField.getValue(addr); | |
| 65 } | |
| 66 | |
| 67 public int getScopeDecodeOffset() { | |
| 68 return ((int) scopeDecodeOffsetField.getValue(addr)); | |
| 69 } | |
| 70 | |
| 71 public Address getRealPC(NMethod code) { | |
| 72 return code.instructionsBegin().addOffsetTo(getPCOffset()); | |
| 73 } | |
| 74 | |
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6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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75 |
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72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
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76 public boolean getReexecute() { |
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72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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77 int flags = (int)pcFlagsField.getValue(addr); |
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72088be4b386
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78 return ((flags & 0x1)== 1); //first is the reexecute bit |
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72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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79 } |
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72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
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80 |
| 0 | 81 public void print(NMethod code) { |
| 82 printOn(System.out, code); | |
| 83 } | |
| 84 | |
| 85 public void printOn(PrintStream tty, NMethod code) { | |
| 86 tty.println("PCDesc(" + getRealPC(code) + "):"); | |
| 87 for (ScopeDesc sd = code.getScopeDescAt(getRealPC(code)); | |
| 88 sd != null; | |
| 89 sd = sd.sender()) { | |
| 90 tty.print(" "); | |
| 91 sd.getMethod().printValueOn(tty); | |
| 92 tty.print(" @" + sd.getBCI()); | |
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6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
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93 tty.print(" reexecute=" + sd.getReexecute()); |
| 0 | 94 tty.println(); |
| 95 } | |
| 96 } | |
| 97 } |