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8154750: Add missing OrderAccess operations to ClassLoaderData lock-free data structures

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Reviewed-by: kbarrett, coleenp, acorn
This commit is contained in:
David Holmes 2016-06-02 23:37:09 -04:00
parent e8db159098
commit c301fb7188
3 changed files with 96 additions and 76 deletions
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12
hotspot/src/share/vm/classfile/classLoaderData.hpp
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@ -171,8 +171,8 @@ class ClassLoaderData : public CHeapObj<mtClass> {
Dependencies _dependencies; // holds dependencies from this class loader
// data to others.
Metaspace * _metaspace; // Meta-space where meta-data defined by the
// classes in the class loader are allocated.
Metaspace * volatile _metaspace; // Meta-space where meta-data defined by the
// 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 _is_anonymous; // if this CLD is for an anonymous class
@ -186,9 +186,9 @@ class ClassLoaderData : public CHeapObj<mtClass> {
JNIHandleBlock* _handles; // Handles to constant pool arrays, Modules, etc, which
// have the same life cycle of the corresponding ClassLoader.
Klass* _klasses; // The classes defined by the class loader.
PackageEntryTable* _packages; // The packages defined by the class loader.
ModuleEntryTable* _modules; // The modules defined by the class loader.
Klass* volatile _klasses; // The classes defined by the class loader.
PackageEntryTable* volatile _packages; // The packages defined by the class loader.
ModuleEntryTable* volatile _modules; // The modules defined by the class loader.
// These method IDs are created for the class loader and set to NULL when the
// class loader is unloaded. They are rarely freed, only for redefine classes
@ -216,8 +216,6 @@ class ClassLoaderData : public CHeapObj<mtClass> {
ClassLoaderData(Handle h_class_loader, bool is_anonymous, Dependencies dependencies);
~ClassLoaderData();
void set_metaspace(Metaspace* m) { _metaspace = m; }
JNIHandleBlock* handles() const;
void set_handles(JNIHandleBlock* handles);