archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-28 07:14:30 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8061205: MetadataOnStackMark only needs to walk code cache during class redefinition

Browse source 
Only do full metadata walk during class redefinition and only walk handles during class unloading.

Reviewed-by: sspitsyn, stefank
This commit is contained in:
Coleen Phillimore 2015-03-13 12:40:39 -04:00
parent 984cf4c9b5
commit 7b384c6958
19 changed files with 147 additions and 248 deletions
Download patch file Download diff file Expand all files Collapse all files

7
hotspot/src/share/vm/prims/jvmtiRedefineClasses.cpp
View file

@ -142,14 +142,11 @@ void VM_RedefineClasses::doit() {
for (int i = 0; i < _class_count; i++) {
redefine_single_class(_class_defs[i].klass, _scratch_classes[i], thread);
ClassLoaderData* cld = _scratch_classes[i]->class_loader_data();
// Free the memory for this class at class unloading time. Not before
// because CMS might think this is still live.
cld->add_to_deallocate_list((InstanceKlass*)_scratch_classes[i]);
_scratch_classes[i] = NULL;
}
// Clean out MethodData pointing to old Method*
// Have to do this after all classes are redefined and all methods that
// are redefined are marked as old.
MethodDataCleaner clean_weak_method_links;
ClassLoaderDataGraph::classes_do(&clean_weak_method_links);