275 (unsigned char**)&result_list);
276
277 if (error == JVMTI_ERROR_NONE) {
278 int count = closure.extract(result_list);
279 *classCountPtr = count;
280 *classesPtr = result_list;
281 }
282 return error;
283 }
284
285 jvmtiError
286 JvmtiGetLoadedClasses::getClassLoaderClasses(JvmtiEnv *env, jobject initiatingLoader,
287 jint* classCountPtr, jclass** classesPtr) {
288 // Since ClassLoaderDataGraph::dictionary_all_entries_do only takes a function pointer
289 // and doesn't call back with a closure data pointer,
290 // we can only pass static methods.
291 JvmtiGetLoadedClassesClosure closure(initiatingLoader);
292 {
293 // To get a consistent list of classes we need MultiArray_lock to ensure
294 // array classes aren't created, and SystemDictionary_lock to ensure that
295 // classes aren't added to the system dictionary,
296 MutexLocker ma(MultiArray_lock);
297 MutexLocker sd(SystemDictionary_lock);
298 // First, count the classes in the system dictionary which have this loader recorded
299 // as an initiating loader. For basic type arrays this information is not recorded
300 // so GetClassLoaderClasses will return all of the basic type arrays. This is okay
301 // because the defining loader for basic type arrays is always the boot class loader
302 // and these classes are "visible" to all loaders.
303 ClassLoaderDataGraph::dictionary_all_entries_do(&JvmtiGetLoadedClassesClosure::increment_with_loader);
304 Universe::basic_type_classes_do(&JvmtiGetLoadedClassesClosure::increment_for_basic_type_arrays);
305 // Next, fill in the classes
306 closure.allocate();
307 ClassLoaderDataGraph::dictionary_all_entries_do(&JvmtiGetLoadedClassesClosure::add_with_loader);
308 Universe::basic_type_classes_do(&JvmtiGetLoadedClassesClosure::add_for_basic_type_arrays);
309 // Drop the SystemDictionary_lock, so the results could be wrong from here,
310 // but we still have a snapshot.
311 }
312 // Post results
313 jclass* result_list;
314 jvmtiError err = env->Allocate(closure.get_count() * sizeof(jclass),
315 (unsigned char**)&result_list);
316 if (err != JVMTI_ERROR_NONE) {
317 return err;
318 }
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275 (unsigned char**)&result_list);
276
277 if (error == JVMTI_ERROR_NONE) {
278 int count = closure.extract(result_list);
279 *classCountPtr = count;
280 *classesPtr = result_list;
281 }
282 return error;
283 }
284
285 jvmtiError
286 JvmtiGetLoadedClasses::getClassLoaderClasses(JvmtiEnv *env, jobject initiatingLoader,
287 jint* classCountPtr, jclass** classesPtr) {
288 // Since ClassLoaderDataGraph::dictionary_all_entries_do only takes a function pointer
289 // and doesn't call back with a closure data pointer,
290 // we can only pass static methods.
291 JvmtiGetLoadedClassesClosure closure(initiatingLoader);
292 {
293 // To get a consistent list of classes we need MultiArray_lock to ensure
294 // array classes aren't created, and SystemDictionary_lock to ensure that
295 // classes aren't added to the class loader data dictionaries.
296 MutexLocker ma(MultiArray_lock);
297 MutexLocker sd(SystemDictionary_lock);
298 // First, count the classes in the class loader data dictionaries which have this loader recorded
299 // as an initiating loader. For basic type arrays this information is not recorded
300 // so GetClassLoaderClasses will return all of the basic type arrays. This is okay
301 // because the defining loader for basic type arrays is always the boot class loader
302 // and these classes are "visible" to all loaders.
303 ClassLoaderDataGraph::dictionary_all_entries_do(&JvmtiGetLoadedClassesClosure::increment_with_loader);
304 Universe::basic_type_classes_do(&JvmtiGetLoadedClassesClosure::increment_for_basic_type_arrays);
305 // Next, fill in the classes
306 closure.allocate();
307 ClassLoaderDataGraph::dictionary_all_entries_do(&JvmtiGetLoadedClassesClosure::add_with_loader);
308 Universe::basic_type_classes_do(&JvmtiGetLoadedClassesClosure::add_for_basic_type_arrays);
309 // Drop the SystemDictionary_lock, so the results could be wrong from here,
310 // but we still have a snapshot.
311 }
312 // Post results
313 jclass* result_list;
314 jvmtiError err = env->Allocate(closure.get_count() * sizeof(jclass),
315 (unsigned char**)&result_list);
316 if (err != JVMTI_ERROR_NONE) {
317 return err;
318 }
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