void constMethodKlass::oop_follow_contents(oop obj) {
assert (obj->is_constMethod(), "object must be constMethod");
constMethodOop cm = constMethodOop(obj);
MarkSweep::mark_and_push(cm->adr_method());
MarkSweep::mark_and_push(cm->adr_stackmap_data());
MarkSweep::mark_and_push(cm->adr_exception_table());
// Performance tweak: We skip iterating over the klass pointer since we
// know that Universe::constMethodKlassObj never moves.
}
void constMethodKlass::oop_follow_contents(ParCompactionManager* cm,
oop obj) {
assert (obj->is_constMethod(), "object must be constMethod");
constMethodOop cm_oop = constMethodOop(obj);
PSParallelCompact::mark_and_push(cm, cm_oop->adr_method());
PSParallelCompact::mark_and_push(cm, cm_oop->adr_stackmap_data());
PSParallelCompact::mark_and_push(cm, cm_oop->adr_exception_table());
// Performance tweak: We skip iterating over the klass pointer since we
// know that Universe::constMethodKlassObj never moves.
}
void constMethodKlass::oop_verify_on(oop obj, outputStream* st) {
Klass::oop_verify_on(obj, st);
guarantee(obj->is_constMethod(), "object must be constMethod");
constMethodOop m = constMethodOop(obj);
guarantee(m->is_perm(), "should be in permspace");
// Verification can occur during oop construction before the method or
// other fields have been initialized.
if (!obj->partially_loaded()) {
guarantee(m->method()->is_perm(), "should be in permspace");
guarantee(m->method()->is_method(), "should be method");
typeArrayOop stackmap_data = m->stackmap_data();
guarantee(stackmap_data == NULL ||
stackmap_data->is_perm(), "should be in permspace");
guarantee(m->exception_table()->is_perm(), "should be in permspace");
guarantee(m->exception_table()->is_typeArray(), "should be type array");
address m_end = (address)((oop*) m + m->size());
address compressed_table_start = m->code_end();
guarantee(compressed_table_start <= m_end, "invalid method layout");
address compressed_table_end = compressed_table_start;
// Verify line number table
if (m->has_linenumber_table()) {
CompressedLineNumberReadStream stream(m->compressed_linenumber_table());
while (stream.read_pair()) {
guarantee(stream.bci() >= 0 && stream.bci() <= m->code_size(), "invalid bci in line number table");
}
compressed_table_end += stream.position();
}
guarantee(compressed_table_end <= m_end, "invalid method layout");
// Verify checked exceptions and local variable tables
if (m->has_checked_exceptions()) {
u2* addr = m->checked_exceptions_length_addr();
guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout");
}
if (m->has_localvariable_table()) {
u2* addr = m->localvariable_table_length_addr();
guarantee(*addr > 0 && (address) addr >= compressed_table_end && (address) addr < m_end, "invalid method layout");
}
// Check compressed_table_end relative to uncompressed_table_start
u2* uncompressed_table_start;
if (m->has_localvariable_table()) {
uncompressed_table_start = (u2*) m->localvariable_table_start();
} else {
if (m->has_checked_exceptions()) {
uncompressed_table_start = (u2*) m->checked_exceptions_start();
} else {
uncompressed_table_start = (u2*) m_end;
}
}
int gap = (intptr_t) uncompressed_table_start - (intptr_t) compressed_table_end;
int max_gap = align_object_size(1)*BytesPerWord;
guarantee(gap >= 0 && gap < max_gap, "invalid method layout");
}
}
int constMethodKlass::oop_oop_iterate(oop obj, OopClosure* blk) {
assert (obj->is_constMethod(), "object must be constMethod");
constMethodOop cm = constMethodOop(obj);
blk->do_oop(cm->adr_method());
blk->do_oop(cm->adr_stackmap_data());
blk->do_oop(cm->adr_exception_table());
// Get size before changing pointers.
// Don't call size() or oop_size() since that is a virtual call.
int size = cm->object_size();
return size;
}
int constMethodKlass::oop_adjust_pointers(oop obj) {
assert(obj->is_constMethod(), "should be constMethod");
constMethodOop cm = constMethodOop(obj);
MarkSweep::adjust_pointer(cm->adr_method());
MarkSweep::adjust_pointer(cm->adr_stackmap_data());
MarkSweep::adjust_pointer(cm->adr_exception_table());
// Get size before changing pointers.
// Don't call size() or oop_size() since that is a virtual call.
int size = cm->object_size();
// Performance tweak: We skip iterating over the klass pointer since we
// know that Universe::constMethodKlassObj never moves.
return size;
}
object_type ClassifyObjectClosure::classify_object(oop obj, bool count) {
object_type type = unknown_type;
Klass* k = obj->blueprint();
if (k->as_klassOop() == SystemDictionary::Object_klass()) {
tty->print_cr("Found the class!");
}
if (count) {
k->set_alloc_count(k->alloc_count() + 1);
}
if (obj->is_instance()) {
if (k->oop_is_instanceRef()) {
type = instanceRef_type;
} else {
type = instance_type;
}
} else if (obj->is_typeArray()) {
type = typeArray_type;
} else if (obj->is_objArray()) {
type = objArray_type;
} else if (obj->is_symbol()) {
type = symbol_type;
} else if (obj->is_klass()) {
Klass* k = ((klassOop)obj)->klass_part();
if (k->oop_is_instance()) {
type = instanceKlass_type;
} else {
type = klass_type;
}
} else if (obj->is_method()) {
type = method_type;
} else if (obj->is_constMethod()) {
type = constMethod_type;
} else if (obj->is_methodData()) {
ShouldNotReachHere();
} else if (obj->is_constantPool()) {
type = constantPool_type;
} else if (obj->is_constantPoolCache()) {
type = constantPoolCache_type;
} else if (obj->is_compiledICHolder()) {
type = compiledICHolder_type;
} else {
ShouldNotReachHere();
}
assert(type != unknown_type, "found object of unknown type.");
return type;
}
void constMethodKlass::oop_print_on(oop obj, outputStream* st) {
ResourceMark rm;
assert(obj->is_constMethod(), "must be constMethod");
Klass::oop_print_on(obj, st);
constMethodOop m = constMethodOop(obj);
st->print(" - method: " INTPTR_FORMAT " ", (address)m->method());
m->method()->print_value_on(st); st->cr();
st->print(" - exceptions: " INTPTR_FORMAT "\n", (address)m->exception_table());
if (m->has_stackmap_table()) {
st->print(" - stackmap data: ");
m->stackmap_data()->print_value_on(st);
st->cr();
}
}
int constMethodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj,
HeapWord* beg_addr,
HeapWord* end_addr) {
assert(obj->is_constMethod(), "should be constMethod");
constMethodOop cm_oop = constMethodOop(obj);
oop* const beg_oop = MAX2((oop*)beg_addr, cm_oop->oop_block_beg());
oop* const end_oop = MIN2((oop*)end_addr, cm_oop->oop_block_end());
for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) {
PSParallelCompact::adjust_pointer(cur_oop);
}
return cm_oop->object_size();
}
int constMethodKlass::oop_update_pointers(ParCompactionManager* cm, oop obj) {
assert(obj->is_constMethod(), "should be constMethod");
constMethodOop cm_oop = constMethodOop(obj);
#if 0
PSParallelCompact::adjust_pointer(cm_oop->adr_method());
PSParallelCompact::adjust_pointer(cm_oop->adr_exception_table());
PSParallelCompact::adjust_pointer(cm_oop->adr_stackmap_data());
#endif
oop* const beg_oop = cm_oop->oop_block_beg();
oop* const end_oop = cm_oop->oop_block_end();
for (oop* cur_oop = beg_oop; cur_oop < end_oop; ++cur_oop) {
PSParallelCompact::adjust_pointer(cur_oop);
}
return cm_oop->object_size();
}
int constMethodKlass::oop_oop_iterate_m(oop obj, OopClosure* blk, MemRegion mr) {
assert (obj->is_constMethod(), "object must be constMethod");
constMethodOop cm = constMethodOop(obj);
oop* adr;
adr = cm->adr_method();
if (mr.contains(adr)) blk->do_oop(adr);
adr = cm->adr_stackmap_data();
if (mr.contains(adr)) blk->do_oop(adr);
adr = cm->adr_exception_table();
if (mr.contains(adr)) blk->do_oop(adr);
// Get size before changing pointers.
// Don't call size() or oop_size() since that is a virtual call.
int size = cm->object_size();
// Performance tweak: We skip iterating over the klass pointer since we
// know that Universe::constMethodKlassObj never moves.
return size;
}
void do_object(oop obj) {
// Mark all constMethod objects.
if (obj->is_constMethod()) {
mark_object(obj);
mark_object(constMethodOop(obj)->stackmap_data());
// Exception tables are needed by ci code during compilation.
mark_object(constMethodOop(obj)->exception_table());
}
// Mark objects referenced by klass objects which are read-only.
else if (obj->is_klass()) {
Klass* k = Klass::cast((klassOop)obj);
mark_object(k->secondary_supers());
// The METHODS() OBJARRAYS CANNOT BE MADE READ-ONLY, even though
// it is never modified. Otherwise, they will be pre-marked; the
// GC marking phase will skip them; and by skipping them will fail
// to mark the methods objects referenced by the array.
if (obj->blueprint()->oop_is_instanceKlass()) {
instanceKlass* ik = instanceKlass::cast((klassOop)obj);
mark_object(ik->method_ordering());
mark_object(ik->local_interfaces());
mark_object(ik->transitive_interfaces());
mark_object(ik->fields());
mark_object(ik->class_annotations());
mark_object_recursive_skipping_klasses(ik->fields_annotations());
mark_object_recursive_skipping_klasses(ik->methods_annotations());
mark_object_recursive_skipping_klasses(ik->methods_parameter_annotations());
mark_object_recursive_skipping_klasses(ik->methods_default_annotations());
typeArrayOop inner_classes = ik->inner_classes();
if (inner_classes != NULL) {
mark_object(inner_classes);
}
}
}
}
void constMethodKlass::oop_push_contents(PSPromotionManager* pm, oop obj) {
assert(obj->is_constMethod(), "should be constMethod");
}
// Short version of printing constMethodOop - just print the name of the
// method it belongs to.
void constMethodKlass::oop_print_value_on(oop obj, outputStream* st) {
assert(obj->is_constMethod(), "must be constMethod");
constMethodOop m = constMethodOop(obj);
st->print(" const part of method " );
m->method()->print_value_on(st);
}
bool constMethodKlass::oop_is_conc_safe(oop obj) const {
assert(obj->is_constMethod(), "must be constMethod oop");
return constMethodOop(obj)->is_conc_safe();
}
bool constMethodKlass::oop_is_parsable(oop obj) const {
assert(obj->is_constMethod(), "must be constMethod oop");
return constMethodOop(obj)->object_is_parsable();
}
int constMethodKlass::oop_size(oop obj) const {
assert(obj->is_constMethod(), "must be constMethod oop");
return constMethodOop(obj)->object_size();
}
// The exception_table is the last field set when loading an object.
void constMethodKlass::oop_set_partially_loaded(oop obj) {
assert(obj->is_constMethod(), "object must be klass");
constMethodOop m = constMethodOop(obj);
// Temporarily set exception_table to point to self
m->set_exception_table((typeArrayOop)obj);
}
bool constMethodKlass::oop_partially_loaded(oop obj) const {
assert(obj->is_constMethod(), "object must be klass");
constMethodOop m = constMethodOop(obj);
// check whether exception_table points to self (flag for partially loaded)
return m->exception_table() == (typeArrayOop)obj;
}
