archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-08-28 15:24:43 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

8152949: Jigsaw crash when Klass in _fixup_module_field_list is unloaded

Browse source 
During start up anonymous classes must be kept alive until after their mirror's module field is patched with java.base

Co-authored-by: Stefan Karlsson <stefan.karlsson@oracle.com>
Reviewed-by: coleenp, hseigel
This commit is contained in:
Per Liden 2016-04-21 09:23:04 -04:00 • committed by Lois Foltan
parent 4adb7c0788
commit 48892f6f68
6 changed files with 31 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

11
hotspot/src/share/vm/classfile/classLoaderData.hpp
View file

@ -175,8 +175,11 @@ class ClassLoaderData : public CHeapObj<mtClass> {
// classes in the class loader are allocated.
Mutex* _metaspace_lock; // Locks the metaspace for allocations and setup.
bool _unloading; // true if this class loader goes away
bool _keep_alive; // if this CLD is kept alive without a keep_alive_object().
bool _is_anonymous; // if this CLD is for an anonymous class
int _keep_alive; // if this CLD is kept alive without a keep_alive_object().
// Currently used solely for anonymous classes.
// _keep_alive does not need to be volatile or
// atomic since there is one unique CLD per anonymous class.
volatile int _claimed; // true if claimed, for example during GC traces.
// To avoid applying oop closure more than once.
// Has to be an int because we cas it.
@ -224,7 +227,7 @@ class ClassLoaderData : public CHeapObj<mtClass> {
bool claim();
void unload();
bool keep_alive() const { return _keep_alive; }
bool keep_alive() const { return _keep_alive > 0; }
void classes_do(void f(Klass*));
void loaded_classes_do(KlassClosure* klass_closure);
void classes_do(void f(InstanceKlass*));
@ -286,8 +289,8 @@ class ClassLoaderData : public CHeapObj<mtClass> {
return _unloading;
}
// Used to make sure that this CLD is not unloaded.
void set_keep_alive(bool value) { _keep_alive = value; }
void inc_keep_alive();
void dec_keep_alive();
inline unsigned int identity_hash() const;