1 /* src/native/vm/gnuclasspath/java_lang_VMClassLoader.cpp
3 Copyright (C) 1996-2005, 2006, 2007, 2008
4 CACAOVM - Verein zur Foerderung der freien virtuellen Maschine CACAO
6 This file is part of CACAO.
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2, or (at
11 your option) any later version.
13 This program is distributed in the hope that it will be useful, but
14 WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
31 #include "mm/memory.hpp"
33 #include "native/jni.hpp"
34 #include "native/llni.h"
35 #include "native/native.hpp"
37 #if defined(ENABLE_JNI_HEADERS)
38 # include "native/vm/include/java_lang_VMClassLoader.h"
41 #include "toolbox/logging.hpp"
42 #include "toolbox/list.hpp"
44 #if defined(ENABLE_ASSERTION)
45 #include "vm/assertion.hpp"
48 #include "vm/array.hpp"
49 #include "vm/jit/builtin.hpp"
50 #include "vm/class.hpp"
51 #include "vm/classcache.hpp"
52 #include "vm/exceptions.hpp"
53 #include "vm/globals.hpp"
54 #include "vm/initialize.hpp"
55 #include "vm/javaobjects.hpp"
56 #include "vm/linker.hpp"
57 #include "vm/loader.hpp"
58 #include "vm/options.h"
60 #include "vm/primitive.hpp"
61 #include "vm/statistics.h"
62 #include "vm/string.hpp"
66 #include "vm/jit/asmpart.h"
68 #if defined(ENABLE_JVMTI)
69 #include "native/jvmti/cacaodbg.h"
73 // Native functions are exported as C functions.
77 * Class: java/lang/VMClassLoader
79 * Signature: (Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;)Ljava/lang/Class;
81 JNIEXPORT jclass JNICALL Java_java_lang_VMClassLoader_defineClass(JNIEnv *env, jclass clazz, jobject cl, jstring name, jbyteArray data, jint offset, jint len, jobject pd)
85 classloader_t* loader;
88 #if defined(ENABLE_JVMTI)
89 jint new_class_data_len = 0;
90 unsigned char* new_class_data = NULL;
93 /* check if data was passed */
96 exceptions_throw_nullpointerexception();
100 /* check the indexes passed */
104 if ((offset < 0) || (len < 0) || ((offset + len) > ba.get_length())) {
105 exceptions_throw_arrayindexoutofboundsexception();
109 /* add classloader to classloader hashtable */
111 loader = loader_hashtable_classloader_add((java_handle_t *) cl);
114 /* convert '.' to '/' in java string */
116 utfname = javastring_toutf((java_handle_t *) name, true);
122 #if defined(ENABLE_JVMTI)
123 /* XXX again this will not work because of the indirection cell for classloaders */
125 /* fire Class File Load Hook JVMTI event */
128 jvmti_ClassFileLoadHook(utfname, len, (unsigned char *) data->data,
129 loader, (java_handle_t *) pd,
130 &new_class_data_len, &new_class_data);
133 /* define the class */
135 #if defined(ENABLE_JVMTI)
136 /* check if the JVMTI wants to modify the class */
138 if (new_class_data == NULL)
139 c = class_define(utfname, loader, new_class_data_len, new_class_data, pd);
143 stream = ((uint8_t *) ba.get_raw_data_ptr()) + offset;
144 c = class_define(utfname, loader, len, stream, (java_handle_t *) pd);
151 java_handle_t* h = LLNI_classinfo_wrap(c);
153 // Set ProtectionDomain.
154 java_lang_Class jlc(h);
157 return (jclass) jlc.get_handle();
162 * Class: java/lang/VMClassLoader
163 * Method: getPrimitiveClass
164 * Signature: (C)Ljava/lang/Class;
166 JNIEXPORT jclass JNICALL Java_java_lang_VMClassLoader_getPrimitiveClass(JNIEnv *env, jclass clazz, jchar type)
170 c = Primitive::get_class_by_char(type);
173 exceptions_throw_classnotfoundexception(utf_null);
177 return (jclass) LLNI_classinfo_wrap(c);
182 * Class: java/lang/VMClassLoader
183 * Method: resolveClass
184 * Signature: (Ljava/lang/Class;)V
186 JNIEXPORT void JNICALL Java_java_lang_VMClassLoader_resolveClass(JNIEnv *env, jclass clazz, jclass c)
190 ci = LLNI_classinfo_unwrap(c);
193 exceptions_throw_nullpointerexception();
199 if (!(ci->state & CLASS_LINKED))
200 (void) link_class(ci);
207 * Class: java/lang/VMClassLoader
209 * Signature: (Ljava/lang/String;Z)Ljava/lang/Class;
211 JNIEXPORT jclass JNICALL Java_java_lang_VMClassLoader_loadClass(JNIEnv *env, jclass clazz, jstring name, jboolean resolve)
217 exceptions_throw_nullpointerexception();
221 /* create utf string in which '.' is replaced by '/' */
223 u = javastring_toutf((java_handle_t *) name, true);
227 c = load_class_bootstrap(u);
232 /* resolve class -- if requested */
238 return (jclass) LLNI_classinfo_wrap(c);
243 * Class: java/lang/VMClassLoader
244 * Method: nativeGetResources
245 * Signature: (Ljava/lang/String;)Ljava/util/Vector;
247 JNIEXPORT jobject JNICALL Java_java_lang_VMClassLoader_nativeGetResources(JNIEnv *env, jclass clazz, jstring name)
249 java_handle_t *o; /* vector being created */
250 methodinfo *m; /* "add" method of vector */
251 java_handle_t *path; /* path to be added */
252 utf *utfname; /* utf to look for */
253 char *buffer; /* char buffer */
254 char *namestart; /* start of name to use */
255 char *tmppath; /* temporary buffer */
256 int32_t namelen; /* length of name to use */
257 int32_t searchlen; /* length of name to search */
258 int32_t bufsize; /* size of buffer allocated */
259 int32_t pathlen; /* name of path to assemble */
260 struct stat buf; /* buffer for stat */
261 jboolean ret; /* return value of "add" */
263 // Get current list of classpath entries.
264 SuckClasspath& suckclasspath = VM::get_current()->get_suckclasspath();
266 /* get the resource name as utf string */
268 utfname = javastring_toutf((java_handle_t *) name, false);
273 /* copy it to a char buffer */
275 namelen = utf_bytes(utfname);
277 bufsize = namelen + strlen("0");
278 buffer = MNEW(char, bufsize);
280 utf_copy(buffer, utfname);
283 /* skip leading '/' */
285 if (namestart[0] == '/') {
291 /* remove trailing `.class' */
293 if (namelen >= 6 && strcmp(namestart + (namelen - 6), ".class") == 0) {
297 /* create a new needle to look for, if necessary */
299 if (searchlen != bufsize-1) {
300 utfname = utf_new(namestart, searchlen);
307 o = native_new_and_init(class_java_util_Vector);
312 /* get Vector.add() method */
314 m = class_resolveclassmethod(class_java_util_Vector,
316 utf_new_char("(Ljava/lang/Object;)Z"),
323 /* iterate over all classpath entries */
325 for (SuckClasspath::iterator it = suckclasspath.begin(); it != suckclasspath.end(); it++) {
326 list_classpath_entry* lce = *it;
328 /* clear path pointer */
331 #if defined(ENABLE_ZLIB)
332 if (lce->type == CLASSPATH_ARCHIVE) {
334 if (zip_find(lce, utfname)) {
335 pathlen = strlen("jar:file://") + lce->pathlen + strlen("!/") +
336 namelen + strlen("0");
338 tmppath = MNEW(char, pathlen);
340 sprintf(tmppath, "jar:file://%s!/%s", lce->path, namestart);
341 path = javastring_new_from_utf_string(tmppath),
343 MFREE(tmppath, char, pathlen);
347 #endif /* defined(ENABLE_ZLIB) */
348 pathlen = strlen("file://") + lce->pathlen + namelen + strlen("0");
350 tmppath = MNEW(char, pathlen);
352 sprintf(tmppath, "file://%s%s", lce->path, namestart);
354 /* Does this file exist? */
356 if (stat(tmppath + strlen("file://") - 1, &buf) == 0)
357 if (!S_ISDIR(buf.st_mode))
358 path = javastring_new_from_utf_string(tmppath);
360 MFREE(tmppath, char, pathlen);
361 #if defined(ENABLE_ZLIB)
365 /* if a resource was found, add it to the vector */
368 ret = vm_call_method_int(m, o, path);
370 if (exceptions_get_exception() != NULL)
378 MFREE(buffer, char, bufsize);
383 MFREE(buffer, char, bufsize);
390 * Class: java/lang/VMClassLoader
391 * Method: defaultAssertionStatus
394 JNIEXPORT jboolean JNICALL Java_java_lang_VMClassLoader_defaultAssertionStatus(JNIEnv *env, jclass clazz)
396 #if defined(ENABLE_ASSERTION)
397 return assertion_system_enabled;
404 * Class: java/lang/VMClassLoader
405 * Method: userAssertionStatus
408 JNIEXPORT jboolean JNICALL Java_java_lang_VMClassLoader_defaultUserAssertionStatus(JNIEnv *env, jclass clazz)
410 #if defined(ENABLE_ASSERTION)
411 return assertion_user_enabled;
418 * Class: java/lang/VMClassLoader
419 * Method: packageAssertionStatus
420 * Signature: (Ljava/lang/Boolean;Ljava/lang/Boolean;)Ljava/util/Map;
422 JNIEXPORT jobject JNICALL Java_java_lang_VMClassLoader_packageAssertionStatus0(JNIEnv *env, jclass clazz, jobject jtrue, jobject jfalse)
425 #if defined(ENABLE_ASSERTION)
432 hm = native_new_and_init(class_java_util_HashMap);
437 #if defined(ENABLE_ASSERTION)
438 /* if nothing todo, return now */
440 if (assertion_package_count == 0) {
444 /* get HashMap.put method */
446 m = class_resolveclassmethod(class_java_util_HashMap,
448 utf_new_char("(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"),
456 for (List<assertion_name_t*>::iterator it = list_assertion_names->begin(); it != list_assertion_names->end(); it++) {
457 assertion_name_t* item = *it;
459 if (item->package == false)
462 if (strcmp(item->name, "") == 0) {
463 /* unnamed package wanted */
467 js = javastring_new_from_ascii(item->name);
473 if (item->enabled == true) {
474 vm_call_method(m, hm, js, jtrue);
477 vm_call_method(m, hm, js, jfalse);
486 * Class: java/lang/VMClassLoader
487 * Method: classAssertionStatus
488 * Signature: (Ljava/lang/Boolean;Ljava/lang/Boolean;)Ljava/util/Map;
490 JNIEXPORT jobject JNICALL Java_java_lang_VMClassLoader_classAssertionStatus0(JNIEnv *env, jclass clazz, jobject jtrue, jobject jfalse)
493 #if defined(ENABLE_ASSERTION)
500 hm = native_new_and_init(class_java_util_HashMap);
505 #if defined(ENABLE_ASSERTION)
506 /* if nothing todo, return now */
508 if (assertion_class_count == 0) {
512 /* get HashMap.put method */
514 m = class_resolveclassmethod(class_java_util_HashMap,
516 utf_new_char("(Ljava/lang/Object;Ljava/lang/Object;)Ljava/lang/Object;"),
524 for (List<assertion_name_t*>::iterator it = list_assertion_names->begin(); it != list_assertion_names->end(); it++) {
525 assertion_name_t* item = *it;
527 if (item->package == true)
530 js = javastring_new_from_ascii(item->name);
535 if (item->enabled == true) {
536 vm_call_method(m, hm, js, jtrue);
539 vm_call_method(m, hm, js, jfalse);
549 * Class: java/lang/VMClassLoader
550 * Method: findLoadedClass
551 * Signature: (Ljava/lang/ClassLoader;Ljava/lang/String;)Ljava/lang/Class;
553 JNIEXPORT jclass JNICALL Java_java_lang_VMClassLoader_findLoadedClass(JNIEnv *env, jclass clazz, jobject loader, jstring name)
559 /* XXX is it correct to add the classloader to the hashtable here? */
561 cl = loader_hashtable_classloader_add((java_handle_t *) loader);
563 /* replace `.' by `/', this is required by the classcache */
565 u = javastring_toutf((java_handle_t *) name, true);
567 /* lookup for defining classloader */
569 c = classcache_lookup_defined(cl, u);
571 /* if not found, lookup for initiating classloader */
574 c = classcache_lookup(cl, u);
576 return (jclass) LLNI_classinfo_wrap(c);
582 /* native methods implemented by this file ************************************/
584 static JNINativeMethod methods[] = {
585 { (char*) "defineClass", (char*) "(Ljava/lang/ClassLoader;Ljava/lang/String;[BIILjava/security/ProtectionDomain;)Ljava/lang/Class;", (void*) (uintptr_t) &Java_java_lang_VMClassLoader_defineClass },
586 { (char*) "getPrimitiveClass", (char*) "(C)Ljava/lang/Class;", (void*) (uintptr_t) &Java_java_lang_VMClassLoader_getPrimitiveClass },
587 { (char*) "resolveClass", (char*) "(Ljava/lang/Class;)V", (void*) (uintptr_t) &Java_java_lang_VMClassLoader_resolveClass },
588 { (char*) "loadClass", (char*) "(Ljava/lang/String;Z)Ljava/lang/Class;", (void*) (uintptr_t) &Java_java_lang_VMClassLoader_loadClass },
589 { (char*) "nativeGetResources", (char*) "(Ljava/lang/String;)Ljava/util/Vector;", (void*) (uintptr_t) &Java_java_lang_VMClassLoader_nativeGetResources },
590 { (char*) "defaultAssertionStatus", (char*) "()Z", (void*) (uintptr_t) &Java_java_lang_VMClassLoader_defaultAssertionStatus },
591 { (char*) "defaultUserAssertionStatus", (char*) "()Z", (void*) (uintptr_t) &Java_java_lang_VMClassLoader_defaultUserAssertionStatus },
592 { (char*) "packageAssertionStatus0", (char*) "(Ljava/lang/Boolean;Ljava/lang/Boolean;)Ljava/util/Map;", (void*) (uintptr_t) &Java_java_lang_VMClassLoader_packageAssertionStatus0 },
593 { (char*) "classAssertionStatus0", (char*) "(Ljava/lang/Boolean;Ljava/lang/Boolean;)Ljava/util/Map;", (void*) (uintptr_t) &Java_java_lang_VMClassLoader_classAssertionStatus0 },
594 { (char*) "findLoadedClass", (char*) "(Ljava/lang/ClassLoader;Ljava/lang/String;)Ljava/lang/Class;", (void*) (uintptr_t) &Java_java_lang_VMClassLoader_findLoadedClass },
598 /* _Jv_java_lang_VMClassLoader_init ********************************************
600 Register native functions.
602 *******************************************************************************/
604 void _Jv_java_lang_VMClassLoader_init(void)
606 utf* u = utf_new_char("java/lang/VMClassLoader");
608 NativeMethods& nm = VM::get_current()->get_nativemethods();
609 nm.register_methods(u, methods, NATIVE_METHODS_COUNT);
614 * These are local overrides for various environment variables in Emacs.
615 * Please do not remove this and leave it at the end of the file, where
616 * Emacs will automagically detect them.
617 * ---------------------------------------------------------------------
620 * indent-tabs-mode: t
624 * vim:noexpandtab:sw=4:ts=4: