1 /* src/native/vm/java_lang_ClassLoader.c - java/lang/ClassLoader
3 Copyright (C) 2007 R. Grafl, A. Krall, C. Kruegel,
4 C. Oates, R. Obermaisser, M. Platter, M. Probst, S. Ring,
5 E. Steiner, C. Thalinger, D. Thuernbeck, P. Tomsich, C. Ullrich,
6 J. Wenninger, 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., 51 Franklin Street, Fifth Floor, Boston, MA
25 $Id: java_lang_VMClass.c 6131 2006-12-06 22:15:57Z twisti $
37 #include "mm/memory.h"
39 #include "vm/global.h" /* required by native headers */
41 #include "native/include/java_lang_Object.h"
43 #if defined(ENABLE_JAVASE)
44 # include "native/include/java_lang_String.h"/* required by java_lang_Class.h */
45 # include "native/include/java_lang_Class.h"
46 # include "native/include/java_lang_ClassLoader.h"
47 # include "native/include/java_security_ProtectionDomain.h"
50 #include "vm/exceptions.h"
52 #include "vmcore/class.h"
53 #include "vmcore/classcache.h"
54 #include "vmcore/options.h"
58 * Class: java/lang/ClassLoader
60 * Signature: (Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;)Ljava/lang/Class;
62 java_lang_Class *_Jv_java_lang_ClassLoader_defineClass(java_lang_ClassLoader *cl, java_lang_String *name, java_bytearray *data, s4 offset, s4 len, java_security_ProtectionDomain *pd)
69 #if defined(ENABLE_JVMTI)
70 jint new_class_data_len = 0;
71 unsigned char* new_class_data = NULL;
74 /* check if data was passed */
77 exceptions_throw_nullpointerexception();
81 /* check the indexes passed */
83 if ((offset < 0) || (len < 0) || ((offset + len) > data->header.size)) {
84 exceptions_throw_arrayindexoutofboundsexception();
89 /* convert '.' to '/' in java string */
91 utfname = javastring_toutf(name, true);
93 /* check if this class has already been defined */
95 c = classcache_lookup_defined_or_initiated((java_objectheader *) cl, utfname);
97 exceptions_throw_linkageerror("duplicate class definition: ", c);
106 #if defined(ENABLE_JVMTI)
107 /* fire Class File Load Hook JVMTI event */
108 if (jvmti) jvmti_ClassFileLoadHook(utfname, len, (unsigned char*)data->data,
109 (java_objectheader *)cl, (java_objectheader *)pd,
110 &new_class_data_len, &new_class_data);
114 /* create a new classinfo struct */
116 c = class_create_classinfo(utfname);
118 #if defined(ENABLE_STATISTICS)
121 if (opt_getloadingtime)
125 /* build a classbuffer with the given data */
127 cb = NEW(classbuffer);
129 #if defined(ENABLE_JVMTI)
130 /* check if the JVMTI wants to modify the class */
131 if (new_class_data == NULL) {
134 cb->data = (u1 *) &data->data[offset];
135 #if defined(ENABLE_JVMTI)
137 cb->size = new_class_data_len;
138 cb->data = (u1 *) new_class_data;
143 /* preset the defining classloader */
145 c->classloader = (java_objectheader *) cl;
147 /* load the class from this buffer */
149 r = load_class_from_classbuffer(cb);
153 FREE(cb, classbuffer);
155 #if defined(ENABLE_STATISTICS)
158 if (opt_getloadingtime)
163 /* If return value is NULL, we had a problem and the class is
164 not loaded. Now free the allocated memory, otherwise we
165 could run into a DOS. */
172 /* set ProtectionDomain */
174 co = (java_lang_Class *) c;
178 /* Store the newly defined class in the class cache. This call also */
179 /* checks whether a class of the same name has already been defined by */
180 /* the same defining loader, and if so, replaces the newly created class */
181 /* by the one defined earlier. */
182 /* Important: The classinfo given to classcache_store must be */
183 /* fully prepared because another thread may return this */
184 /* pointer after the lookup at to top of this function */
185 /* directly after the class cache lock has been released. */
187 c = classcache_store((java_objectheader *) cl, c, true);
189 return (java_lang_Class *) c;
194 * These are local overrides for various environment variables in Emacs.
195 * Please do not remove this and leave it at the end of the file, where
196 * Emacs will automagically detect them.
197 * ---------------------------------------------------------------------
200 * indent-tabs-mode: t
204 * vim:noexpandtab:sw=4:ts=4: