66 JvmtiExport::post_class_file_load_hook(class_name, 67 class_loader, 68 protection_domain, 69 &ptr, 70 &end_ptr, 71 &cached_class_file); 72 if (old_ptr != ptr) { 73 // JVMTI agent has modified class file data. 74 // Set new class file stream using JVMTI agent modified class file data. 75 ClassLoaderData* loader_data = 76 ClassLoaderData::class_loader_data(class_loader()); 77 int path_index = ik->shared_classpath_index(); 78 ClassFileStream* stream = new ClassFileStream(ptr, 79 end_ptr - ptr, 80 cfs->source(), 81 ClassFileStream::verify); 82 ClassFileParser parser(stream, 83 class_name, 84 loader_data, 85 protection_domain, 86 NULL, 87 NULL, 88 ClassFileParser::BROADCAST, // publicity level 89 CHECK_NULL); 90 InstanceKlass* new_ik = parser.create_instance_klass(true /* changed_by_loadhook */, 91 CHECK_NULL); 92 if (cached_class_file != NULL) { 93 new_ik->set_cached_class_file(cached_class_file); 94 } 95 96 if (class_loader.is_null()) { 97 ResourceMark rm; 98 ClassLoader::add_package(class_name->as_C_string(), path_index, THREAD); 99 } 100 101 return new_ik; 102 } 103 } 104 #endif 105 106 return NULL; 107 } 108 109 110 static ClassFileStream* check_class_file_load_hook(ClassFileStream* stream, 111 Symbol* name, 149 &end_ptr, 150 cached_class_file); 151 152 if (ptr != stream->buffer()) { 153 // JVMTI agent has modified class file data. 154 // Set new class file stream using JVMTI agent modified class file data. 155 stream = new ClassFileStream(ptr, 156 end_ptr - ptr, 157 stream->source(), 158 stream->need_verify()); 159 } 160 } 161 162 return stream; 163 } 164 165 166 InstanceKlass* KlassFactory::create_from_stream(ClassFileStream* stream, 167 Symbol* name, 168 ClassLoaderData* loader_data, 169 Handle protection_domain, 170 const InstanceKlass* unsafe_anonymous_host, 171 GrowableArray<Handle>* cp_patches, 172 TRAPS) { 173 assert(stream != NULL, "invariant"); 174 assert(loader_data != NULL, "invariant"); 175 assert(THREAD->is_Java_thread(), "must be a JavaThread"); 176 177 ResourceMark rm; 178 HandleMark hm; 179 180 JvmtiCachedClassFileData* cached_class_file = NULL; 181 182 ClassFileStream* old_stream = stream; 183 184 // increment counter 185 THREAD->statistical_info().incr_define_class_count(); 186 187 // Skip this processing for VM anonymous classes 188 if (unsafe_anonymous_host == NULL) { 189 stream = check_class_file_load_hook(stream, 190 name, 191 loader_data, 192 protection_domain, 193 &cached_class_file, 194 CHECK_NULL); 195 } 196 197 ClassFileParser parser(stream, 198 name, 199 loader_data, 200 protection_domain, 201 unsafe_anonymous_host, 202 cp_patches, 203 ClassFileParser::BROADCAST, // publicity level 204 CHECK_NULL); 205 206 InstanceKlass* result = parser.create_instance_klass(old_stream != stream, CHECK_NULL); 207 assert(result == parser.create_instance_klass(old_stream != stream, THREAD), "invariant"); 208 209 if (result == NULL) { 210 return NULL; 211 } 212 213 if (cached_class_file != NULL) { 214 // JVMTI: we have an InstanceKlass now, tell it about the cached bytes 215 result->set_cached_class_file(cached_class_file); 216 } 217 218 JFR_ONLY(ON_KLASS_CREATION(result, parser, THREAD);) 219 220 #if INCLUDE_CDS 221 if (Arguments::is_dumping_archive()) { 222 ClassLoader::record_result(result, stream, THREAD); 223 } 224 #endif // INCLUDE_CDS 225 226 return result; 227 } | 66 JvmtiExport::post_class_file_load_hook(class_name, 67 class_loader, 68 protection_domain, 69 &ptr, 70 &end_ptr, 71 &cached_class_file); 72 if (old_ptr != ptr) { 73 // JVMTI agent has modified class file data. 74 // Set new class file stream using JVMTI agent modified class file data. 75 ClassLoaderData* loader_data = 76 ClassLoaderData::class_loader_data(class_loader()); 77 int path_index = ik->shared_classpath_index(); 78 ClassFileStream* stream = new ClassFileStream(ptr, 79 end_ptr - ptr, 80 cfs->source(), 81 ClassFileStream::verify); 82 ClassFileParser parser(stream, 83 class_name, 84 loader_data, 85 protection_domain, 86 NULL, // unsafe_anonymous_host 87 NULL, // cp_patches 88 false, // is_hidden 89 false, // can_access_vm_annotations 90 ClassFileParser::BROADCAST, // publicity level 91 CHECK_NULL); 92 ClassInstanceInfo cl_inst_info; 93 InstanceKlass* new_ik = parser.create_instance_klass(true, // changed_by_loadhook 94 cl_inst_info, // dynamic_nest_host and classData 95 CHECK_NULL); 96 97 if (cached_class_file != NULL) { 98 new_ik->set_cached_class_file(cached_class_file); 99 } 100 101 if (class_loader.is_null()) { 102 ResourceMark rm; 103 ClassLoader::add_package(class_name->as_C_string(), path_index, THREAD); 104 } 105 106 return new_ik; 107 } 108 } 109 #endif 110 111 return NULL; 112 } 113 114 115 static ClassFileStream* check_class_file_load_hook(ClassFileStream* stream, 116 Symbol* name, 154 &end_ptr, 155 cached_class_file); 156 157 if (ptr != stream->buffer()) { 158 // JVMTI agent has modified class file data. 159 // Set new class file stream using JVMTI agent modified class file data. 160 stream = new ClassFileStream(ptr, 161 end_ptr - ptr, 162 stream->source(), 163 stream->need_verify()); 164 } 165 } 166 167 return stream; 168 } 169 170 171 InstanceKlass* KlassFactory::create_from_stream(ClassFileStream* stream, 172 Symbol* name, 173 ClassLoaderData* loader_data, 174 const ClassLoadInfo& cl_info, 175 TRAPS) { 176 assert(stream != NULL, "invariant"); 177 assert(loader_data != NULL, "invariant"); 178 assert(THREAD->is_Java_thread(), "must be a JavaThread"); 179 180 ResourceMark rm; 181 HandleMark hm; 182 183 JvmtiCachedClassFileData* cached_class_file = NULL; 184 185 ClassFileStream* old_stream = stream; 186 187 // increment counter 188 THREAD->statistical_info().incr_define_class_count(); 189 190 assert(!(cl_info.is_hidden() && (cl_info.unsafe_anonymous_host() != NULL)), 191 "hidden class has an anonymous host"); 192 193 // Skip this processing for VM hidden or anonymous classes 194 if (!cl_info.is_hidden() && (cl_info.unsafe_anonymous_host() == NULL)) { 195 stream = check_class_file_load_hook(stream, 196 name, 197 loader_data, 198 cl_info.protection_domain(), 199 &cached_class_file, 200 CHECK_NULL); 201 } 202 203 ClassFileParser parser(stream, 204 name, 205 loader_data, 206 cl_info.protection_domain(), 207 cl_info.unsafe_anonymous_host(), 208 cl_info.cp_patches(), 209 cl_info.is_hidden(), 210 cl_info.can_access_vm_annotations(), 211 ClassFileParser::BROADCAST, // publicity level 212 CHECK_NULL); 213 214 const ClassInstanceInfo* cl_inst_info = cl_info.class_hidden_info_ptr(); 215 InstanceKlass* result = parser.create_instance_klass(old_stream != stream, *cl_inst_info, CHECK_NULL); 216 #ifdef ASSERT 217 // Need a NULL dynamic_nest_host here otherwise set_nest_host() may assert. 218 ClassInstanceInfo cl_inst_info_null(NULL, cl_inst_info->class_data()); 219 assert(result == parser.create_instance_klass(old_stream != stream, cl_inst_info_null, THREAD), "invariant"); 220 #endif 221 222 if (result == NULL) { 223 return NULL; 224 } 225 226 if (cached_class_file != NULL) { 227 // JVMTI: we have an InstanceKlass now, tell it about the cached bytes 228 result->set_cached_class_file(cached_class_file); 229 } 230 231 JFR_ONLY(ON_KLASS_CREATION(result, parser, THREAD);) 232 233 #if INCLUDE_CDS 234 if (Arguments::is_dumping_archive()) { 235 ClassLoader::record_result(result, stream, THREAD); 236 } 237 #endif // INCLUDE_CDS 238 239 return result; 240 } |