1 /* src/vm/class.h - class related functions header
3 Copyright (C) 1996-2005 R. Grafl, A. Krall, C. Kruegel, C. Oates,
4 R. Obermaisser, M. Platter, M. Probst, S. Ring, E. Steiner,
5 C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich, J. Wenninger,
6 Institut f. Computersprachen - TU Wien
8 This file is part of CACAO.
10 This program is free software; you can redistribute it and/or
11 modify it under the terms of the GNU General Public License as
12 published by the Free Software Foundation; either version 2, or (at
13 your option) any later version.
15 This program is distributed in the hope that it will be useful, but
16 WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
25 Contact: cacao@complang.tuwien.ac.at
27 Authors: Christian Thalinger
31 $Id: class.h 3501 2005-10-26 20:27:15Z twisti $
39 /* forward typedefs ***********************************************************/
41 typedef struct innerclassinfo innerclassinfo;
42 typedef struct extra_classref extra_classref;
48 #include "toolbox/list.h"
49 #include "vm/global.h"
51 #include "vm/references.h"
53 #include "vm/linker.h"
54 #include "vm/tables.h"
55 #include "vm/jit/inline/sets.h"
58 /* classinfo ******************************************************************/
60 struct classinfo { /* class structure */
61 java_objectheader header; /* classes are also objects */
62 java_objectarray* signers;
63 struct java_security_ProtectionDomain* pd;
64 struct java_lang_VMClass* vmClass;
65 struct java_lang_reflect_Constructor* constructor;
67 s4 initializing_thread; /* gnu classpath */
68 s4 erroneous_state; /* gnu classpath */
69 struct gnu_classpath_RawData* vmData; /* gnu classpath */
71 s4 flags; /* ACC flags */
72 utf *name; /* class name */
74 s4 cpcount; /* number of entries in constant pool */
75 u1 *cptags; /* constant pool tags */
76 voidptr *cpinfos; /* pointer to constant pool info structures */
78 s4 classrefcount; /* number of symbolic class references */
79 constant_classref *classrefs; /* table of symbolic class references */
80 extra_classref *extclassrefs; /* additional classrefs */
81 s4 parseddescsize; /* size of the parsed descriptors block */
82 u1 *parseddescs; /* parsed descriptors */
84 classref_or_classinfo super; /* super class */
85 classinfo *sub; /* sub class pointer */
86 classinfo *nextsub; /* pointer to next class in sub class list */
88 s4 interfacescount; /* number of interfaces */
89 classref_or_classinfo *interfaces; /* superinterfaces */
91 s4 fieldscount; /* number of fields */
92 fieldinfo *fields; /* field table */
94 s4 methodscount; /* number of methods */
95 methodinfo *methods; /* method table */
97 listnode listnode; /* linkage */
99 bool initialized; /* true, if class already initialized */
100 bool initializing; /* flag for the compiler */
101 bool loaded; /* true, if class already loaded */
102 bool linked; /* true, if class already linked */
103 s4 index; /* hierarchy depth (classes) or index */
105 s4 instancesize; /* size of an instance of this class */
107 vftbl_t *vftbl; /* pointer to virtual function table */
109 methodinfo *finalizer; /* finalizer method */
111 u2 innerclasscount; /* number of inner classes */
112 innerclassinfo *innerclass;
114 bool classvftbl; /* has its own copy of the Class vtbl */
116 s4 classUsed; /* 0= not used 1 = used CO-RT */
118 classSetNode *impldBy; /* interface class implemented by class set */
119 /* Object class 's impldBy is list of all */
120 /* interface classes used (RT & XTA only */
121 /* normally no list of interfaces used) */
122 utf *packagename; /* full name of the package */
123 utf *sourcefile; /* classfile name containing this class */
124 java_objectheader *classloader; /* NULL for bootstrap classloader */
128 /* innerclassinfo *************************************************************/
130 struct innerclassinfo {
131 classref_or_classinfo inner_class; /* inner class pointer */
132 classref_or_classinfo outer_class; /* outer class pointer */
133 utf *name; /* innerclass name */
134 s4 flags; /* ACC flags */
138 /* extra_classref **************************************************************
140 for classrefs not occurring within descriptors
142 *******************************************************************************/
144 struct extra_classref {
145 extra_classref *next;
146 constant_classref classref;
150 /* global variables ***********************************************************/
152 extern list unlinkedclasses; /* this is only used for eager class loading */
155 /* frequently used classes ****************************************************/
157 /* important system classes */
159 extern classinfo *class_java_lang_Object;
160 extern classinfo *class_java_lang_Class;
161 extern classinfo *class_java_lang_ClassLoader;
162 extern classinfo *class_java_lang_Cloneable;
163 extern classinfo *class_java_lang_SecurityManager;
164 extern classinfo *class_java_lang_String;
165 extern classinfo *class_java_lang_System;
166 extern classinfo *class_java_lang_Thread;
167 extern classinfo *class_java_lang_ThreadGroup;
168 extern classinfo *class_java_lang_VMThread;
169 extern classinfo *class_java_io_Serializable;
172 /* system exception classes required in cacao */
174 extern classinfo *class_java_lang_Throwable;
175 extern classinfo *class_java_lang_VMThrowable;
176 extern classinfo *class_java_lang_Error;
177 extern classinfo *class_java_lang_NoClassDefFoundError;
178 extern classinfo *class_java_lang_OutOfMemoryError;
180 extern classinfo *class_java_lang_Exception;
181 extern classinfo *class_java_lang_ClassNotFoundException;
182 extern classinfo *class_java_lang_IllegalArgumentException;
185 extern classinfo *class_java_lang_Void;
186 extern classinfo *class_java_lang_Boolean;
187 extern classinfo *class_java_lang_Byte;
188 extern classinfo *class_java_lang_Character;
189 extern classinfo *class_java_lang_Short;
190 extern classinfo *class_java_lang_Integer;
191 extern classinfo *class_java_lang_Long;
192 extern classinfo *class_java_lang_Float;
193 extern classinfo *class_java_lang_Double;
196 /* some runtime exception */
198 extern classinfo *class_java_lang_NullPointerException;
201 /* some classes which may be used more often */
203 extern classinfo *class_java_lang_StackTraceElement;
204 extern classinfo *class_java_lang_reflect_Constructor;
205 extern classinfo *class_java_lang_reflect_Field;
206 extern classinfo *class_java_lang_reflect_Method;
207 extern classinfo *class_java_security_PrivilegedAction;
208 extern classinfo *class_java_util_Vector;
210 extern classinfo *arrayclass_java_lang_Object;
213 /* pseudo classes for the type checker ****************************************/
216 * pseudo_class_Arraystub
217 * (extends Object implements Cloneable, java.io.Serializable)
219 * If two arrays of incompatible component types are merged,
220 * the resulting reference has no accessible components.
221 * The result does, however, implement the interfaces Cloneable
222 * and java.io.Serializable. This pseudo class is used internally
223 * to represent such results. (They are *not* considered arrays!)
227 * This pseudo class is used internally to represent the
232 * This pseudo class is used internally to represent the
233 * the 'uninitialized object' type.
236 extern classinfo *pseudo_class_Arraystub;
237 extern classinfo *pseudo_class_Null;
238 extern classinfo *pseudo_class_New;
241 /* function prototypes ********************************************************/
243 /* create a new classinfo struct */
244 classinfo *class_create_classinfo(utf *u);
246 /* set the package name after the name has been set */
247 void class_set_packagename(classinfo *c);
249 /* retrieve constantpool element */
250 voidptr class_getconstant(classinfo *class, u4 pos, u4 ctype);
251 voidptr innerclass_getconstant(classinfo *c, u4 pos, u4 ctype);
253 /* frees all resources used by the class */
254 void class_free(classinfo *);
256 /* return an array class with the given component class */
257 classinfo *class_array_of(classinfo *component,bool link);
259 /* return an array class with the given dimension and element class */
260 classinfo *class_multiarray_of(s4 dim, classinfo *element,bool link);
262 /* return a classref for the given class name */
263 /* (does a linear search!) */
264 constant_classref *class_lookup_classref(classinfo *cls,utf *name);
266 /* return a classref for the given class name */
267 /* (does a linear search!) */
268 constant_classref *class_get_classref(classinfo *cls,utf *name);
270 /* return a classref to the class itself */
271 /* (does a linear search!) */
272 constant_classref *class_get_self_classref(classinfo *cls);
274 /* return a classref for an array with the given dimension of with the */
275 /* given component type */
276 constant_classref *class_get_classref_multiarray_of(s4 dim,constant_classref *ref);
278 /* return a classref for the component type of the given array type */
279 constant_classref *class_get_classref_component_of(constant_classref *ref);
281 /* get a class' field by name and descriptor */
282 fieldinfo *class_findfield(classinfo *c, utf *name, utf *desc);
284 /* search 'classinfo'-structure for a field with the specified name */
285 fieldinfo *class_findfield_by_name(classinfo *c, utf *name);
286 s4 class_findfield_index_by_name(classinfo *c, utf *name);
288 /* search class for a field */
289 fieldinfo *class_resolvefield(classinfo *c, utf *name, utf *desc, classinfo *referer, bool except);
291 /* search for a method with a specified name and descriptor */
292 methodinfo *class_findmethod(classinfo *c, utf *name, utf *desc);
293 methodinfo *class_resolvemethod(classinfo *c, utf *name, utf *dest);
294 methodinfo *class_resolveclassmethod(classinfo *c, utf *name, utf *dest, classinfo *referer, bool except);
295 methodinfo *class_resolveinterfacemethod(classinfo *c, utf *name, utf *dest, classinfo *referer, bool except);
297 /* search for a method with specified name and arguments (returntype ignored) */
298 methodinfo *class_findmethod_approx(classinfo *c, utf *name, utf *desc);
299 methodinfo *class_resolvemethod_approx(classinfo *c, utf *name, utf *dest);
301 bool class_issubclass(classinfo *sub, classinfo *super);
304 void class_showmethods(classinfo *c);
305 void class_showconstantpool(classinfo *c);
307 #endif /* _CLASS_H */
311 * These are local overrides for various environment variables in Emacs.
312 * Please do not remove this and leave it at the end of the file, where
313 * Emacs will automagically detect them.
314 * ---------------------------------------------------------------------
317 * indent-tabs-mode: t