Mercurial > hg > truffle
annotate agent/src/share/classes/sun/jvm/hotspot/types/Type.java @ 113:ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
Summary: Compressed oops in instances, arrays, and headers. Code contributors are coleenp, phh, never, swamyv
Reviewed-by: jmasa, kamg, acorn, tbell, kvn, rasbold
| author | coleenp |
|---|---|
| date | Sun, 13 Apr 2008 17:43:42 -0400 |
| parents | a61af66fc99e |
| children | d1605aabd0a1 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 * Copyright 2000-2005 Sun Microsystems, Inc. All Rights Reserved. | |
| 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.types; | |
| 26 | |
| 27 import java.util.*; | |
| 28 | |
| 29 /** This is the top-level interface which describes C++ classes and | |
| 30 primitive types as well as enough about Java primitive and object | |
| 31 types to allow the oop hierarchy to be constructed. */ | |
| 32 | |
| 33 public interface Type { | |
| 34 public String getName(); | |
| 35 | |
| 36 /* The supertype of this type. May be null for top-level classes and | |
| 37 primitive types. NOTE that multiple inheritance is currently not | |
| 38 handled. However, it could (probably) be by making this return a | |
| 39 list and adding appropriate routines to cast an address of one | |
| 40 type to another. */ | |
| 41 public Type getSuperclass(); | |
| 42 | |
| 43 /** The size in bytes, at the machine level, of this type. This | |
| 44 should be equivalent to the sizeof operator -- i.e., should | |
| 45 include any compiler-inserted fields like the vtbl for C++ | |
| 46 types. */ | |
| 47 public long getSize(); | |
| 48 | |
| 49 /** Indicates whether this type is a C integer type -- regardless of | |
| 50 size or signedness. */ | |
| 51 public boolean isCIntegerType(); | |
| 52 | |
| 53 /** Indicates whether this type is const char*. */ | |
| 54 public boolean isCStringType(); | |
| 55 | |
| 56 /** Indicates whether this type is one of the Java primitive types. */ | |
| 57 public boolean isJavaPrimitiveType(); | |
| 58 | |
| 59 /** Indicates whether this type is an oop type in the VM. */ | |
| 60 public boolean isOopType(); | |
| 61 | |
| 62 /** Indicates whether this type is a pointer type. */ | |
| 63 public boolean isPointerType(); | |
| 64 | |
| 65 /** This is permissive and returns the CField regardless of its type | |
| 66 as long as it is present. Returns null if the field was not | |
| 67 found, unless throwExceptionIfNotFound is true, in which case a | |
| 68 RuntimeException is thrown (for debugging purposes). */ | |
| 69 public Field getField(String fieldName, boolean searchSuperclassFields, | |
| 70 boolean throwExceptionIfNotFound); | |
| 71 | |
| 72 /** This is permissive and returns the CField regardless of its type | |
| 73 as long as it is present -- it is equivalent to | |
| 74 getField(fieldName, searchSuperclassFields, true). Throws a | |
| 75 RuntimeException if the field was not found. */ | |
| 76 public Field getField(String fieldName, boolean searchSuperclassFields); | |
| 77 | |
| 78 /** This is permissive and returns the CField regardless of its type | |
| 79 as long as it is present. This does not search superclasses' | |
| 80 fields; it is equivalent to getField(fieldName, false). Throws a | |
| 81 RuntimeException if the field was not found. */ | |
| 82 public Field getField(String fieldName); | |
| 83 | |
| 84 /** If there is a mismatch between the declared type and the type | |
| 85 which would otherwise be returned from this routine, it throws a | |
| 86 WrongTypeException. declaredType must not be null. Throws a | |
| 87 RuntimeException if field was otherwise not found. */ | |
| 88 public Field getField(String fieldName, Type declaredType, | |
| 89 boolean searchSuperclassFields) throws WrongTypeException; | |
| 90 | |
| 91 /** If there is a mismatch between the declared type and the type | |
| 92 which would otherwise be returned from this routine, it throws a | |
| 93 WrongTypeException. declaredType must not be null. This does not | |
| 94 search superclasses' fields; it is equivalent to | |
| 95 getField(fieldName, declaredType, false). Throws a | |
| 96 RuntimeException if field was otherwise not found. */ | |
| 97 public Field getField(String fieldName, Type declaredType) throws WrongTypeException; | |
| 98 | |
| 99 /** Iterate over all of the fields in this type but <B>not</B> in | |
| 100 any of its superclasses. The returned Iterator's "remove" method | |
| 101 must not be called. */ | |
| 102 public Iterator getFields(); | |
| 103 | |
| 104 /** <P> These accessors are designed to allow strong type checking | |
| 105 of certain well-known types of fields, specifically Java | |
| 106 primitive and oop types. Specialized fields for all primitive | |
| 107 types, as well as oop fields, are required to have strong type | |
| 108 checking and a WrongTypeException should be thrown if the given | |
| 109 field is not precisely of the given type. Address and Oop fields | |
| 110 are more permissive to reduce the complexity of the initial | |
| 111 implementation. </P> | |
| 112 | |
| 113 <P> These accessors do not search the superclass's fields. </P> | |
| 114 */ | |
| 115 public JBooleanField getJBooleanField (String fieldName) throws WrongTypeException; | |
| 116 public JByteField getJByteField (String fieldName) throws WrongTypeException; | |
| 117 public JCharField getJCharField (String fieldName) throws WrongTypeException; | |
| 118 public JDoubleField getJDoubleField (String fieldName) throws WrongTypeException; | |
| 119 public JFloatField getJFloatField (String fieldName) throws WrongTypeException; | |
| 120 public JIntField getJIntField (String fieldName) throws WrongTypeException; | |
| 121 public JLongField getJLongField (String fieldName) throws WrongTypeException; | |
| 122 public JShortField getJShortField (String fieldName) throws WrongTypeException; | |
| 123 public CIntegerField getCIntegerField (String fieldName) throws WrongTypeException; | |
| 124 public OopField getOopField (String fieldName) throws WrongTypeException; | |
|
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ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
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125 public NarrowOopField getNarrowOopField (String fieldName) throws WrongTypeException; |
| 0 | 126 public AddressField getAddressField (String fieldName); |
| 127 } |