// increment the count for the given basic type array class (and any
// multi-dimensional arrays). For example, for [B we check for
// [[B, [[[B, .. and the count is incremented for each one that exists.
static void increment_for_basic_type_arrays(Klass* k) {
JvmtiGetLoadedClassesClosure* that = JvmtiGetLoadedClassesClosure::get_this();
assert(that != NULL, "no JvmtiGetLoadedClassesClosure");
for (Klass* l = k; l != NULL; l = l->array_klass_or_null()) {
that->set_count(that->get_count() + 1);
}
}
static void prim_array_increment_with_loader(Klass* array, ClassLoaderData* loader_data) {
JvmtiGetLoadedClassesClosure* that = JvmtiGetLoadedClassesClosure::get_this();
oop class_loader = loader_data->class_loader();
if (class_loader == JNIHandles::resolve(that->get_initiatingLoader())) {
that->set_count(that->get_count() + 1);
}
}
static void increment_with_loader(klassOop k, oop loader) {
JvmtiGetLoadedClassesClosure* that = JvmtiGetLoadedClassesClosure::get_this();
if (loader == JNIHandles::resolve(that->get_initiatingLoader())) {
for (klassOop l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) {
that->set_count(that->get_count() + 1);
}
}
}
static void increment_with_loader(Klass* k, ClassLoaderData* loader_data) {
JvmtiGetLoadedClassesClosure* that = JvmtiGetLoadedClassesClosure::get_this();
oop class_loader = loader_data->class_loader();
if (class_loader == JNIHandles::resolve(that->get_initiatingLoader())) {
for (Klass* l = k; l != NULL; l = l->array_klass_or_null()) {
that->set_count(that->get_count() + 1);
}
}
}
static void add_with_loader(klassOop k, oop loader) {
JvmtiGetLoadedClassesClosure* that = JvmtiGetLoadedClassesClosure::get_this();
if (that->available()) {
if (loader == JNIHandles::resolve(that->get_initiatingLoader())) {
for (klassOop l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) {
oop mirror = Klass::cast(l)->java_mirror();
that->set_element(that->get_index(), mirror);
that->set_index(that->get_index() + 1);
}
}
}
}
static void add_with_loader(Klass* k, ClassLoaderData* loader_data) {
JvmtiGetLoadedClassesClosure* that = JvmtiGetLoadedClassesClosure::get_this();
if (that->available()) {
oop class_loader = loader_data->class_loader();
if (class_loader == JNIHandles::resolve(that->get_initiatingLoader())) {
for (Klass* l = k; l != NULL; l = l->array_klass_or_null()) {
oop mirror = l->java_mirror();
that->set_element(that->get_index(), mirror);
that->set_index(that->get_index() + 1);
}
}
}
}
jvmtiError
JvmtiGetLoadedClasses::getLoadedClasses(JvmtiEnv *env, jint* classCountPtr, jclass** classesPtr) {
// Since SystemDictionary::classes_do only takes a function pointer
// and doesn't call back with a closure data pointer,
// we can only pass static methods.
JvmtiGetLoadedClassesClosure closure;
{
// To get a consistent list of classes we need MultiArray_lock to ensure
// array classes aren't created, and SystemDictionary_lock to ensure that
// classes aren't added to the system dictionary,
MutexLocker ma(MultiArray_lock);
MutexLocker sd(SystemDictionary_lock);
// First, count the classes
SystemDictionary::classes_do(&JvmtiGetLoadedClassesClosure::increment);
Universe::basic_type_classes_do(&JvmtiGetLoadedClassesClosure::increment);
// Next, fill in the classes
closure.allocate();
SystemDictionary::classes_do(&JvmtiGetLoadedClassesClosure::add);
Universe::basic_type_classes_do(&JvmtiGetLoadedClassesClosure::add);
// Drop the SystemDictionary_lock, so the results could be wrong from here,
// but we still have a snapshot.
}
// Post results
jclass* result_list;
jvmtiError err = env->Allocate(closure.get_count() * sizeof(jclass),
(unsigned char**)&result_list);
if (err != JVMTI_ERROR_NONE) {
return err;
}
closure.extract(env, result_list);
*classCountPtr = closure.get_count();
*classesPtr = result_list;
return JVMTI_ERROR_NONE;
}
// add the basic type array class and its multi-dimensional array classes to the list
static void add_for_basic_type_arrays(Klass* k) {
JvmtiGetLoadedClassesClosure* that = JvmtiGetLoadedClassesClosure::get_this();
assert(that != NULL, "no JvmtiGetLoadedClassesClosure");
assert(that->available(), "no list");
for (Klass* l = k; l != NULL; l = l->array_klass_or_null()) {
oop mirror = l->java_mirror();
that->set_element(that->get_index(), mirror);
that->set_index(that->get_index() + 1);
}
}
// Finally, the static methods that are the callbacks
static void increment(klassOop k) {
JvmtiGetLoadedClassesClosure* that = JvmtiGetLoadedClassesClosure::get_this();
if (that->get_initiatingLoader() == NULL) {
for (klassOop l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) {
that->set_count(that->get_count() + 1);
}
} else if (k != NULL) {
// if initiating loader not null, just include the instance with 1 dimension
that->set_count(that->get_count() + 1);
}
}
static void add(klassOop k) {
JvmtiGetLoadedClassesClosure* that = JvmtiGetLoadedClassesClosure::get_this();
if (that->available()) {
if (that->get_initiatingLoader() == NULL) {
for (klassOop l = k; l != NULL; l = Klass::cast(l)->array_klass_or_null()) {
oop mirror = Klass::cast(l)->java_mirror();
that->set_element(that->get_index(), mirror);
that->set_index(that->get_index() + 1);
}
} else if (k != NULL) {
// if initiating loader not null, just include the instance with 1 dimension
oop mirror = Klass::cast(k)->java_mirror();
that->set_element(that->get_index(), mirror);
that->set_index(that->get_index() + 1);
}
}
}
static void prim_array_increment_with_loader(klassOop array, oop loader) {
JvmtiGetLoadedClassesClosure* that = JvmtiGetLoadedClassesClosure::get_this();
if (loader == JNIHandles::resolve(that->get_initiatingLoader())) {
that->set_count(that->get_count() + 1);
}
}