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4766230: Hotspot vtable inconsistencies cause core dumps. 6579515. 6582242

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Reviewed-by: kamg, coleenp
This commit is contained in:
Karen Kinnear 2009-03-18 17:20:57 -04:00
parent f9f538c7fd
commit 25de21d620
5 changed files with 178 additions and 157 deletions
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13
hotspot/src/share/vm/oops/klassVtable.hpp
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@ -70,8 +70,9 @@ class klassVtable : public ResourceObj {
// conputes vtable length (in words) and the number of miranda methods
static void compute_vtable_size_and_num_mirandas(int &vtable_length, int &num_miranda_methods,
klassOop super, objArrayOop methods,
AccessFlags class_flags, oop classloader,
symbolOop classname, objArrayOop local_interfaces);
AccessFlags class_flags, Handle classloader,
symbolHandle classname, objArrayOop local_interfaces,
TRAPS);
// RedefineClasses() API support:
// If any entry of this vtable points to any of old_methods,
@ -111,14 +112,16 @@ class klassVtable : public ResourceObj {
protected:
friend class vtableEntry;
private:
enum { VTABLE_TRANSITIVE_OVERRIDE_VERSION = 51 } ;
void copy_vtable_to(vtableEntry* start);
int initialize_from_super(KlassHandle super);
int index_of(methodOop m, int len) const; // same as index_of, but search only up to len
void put_method_at(methodOop m, int index);
static bool needs_new_vtable_entry(methodOop m, klassOop super, oop classloader, symbolOop classname, AccessFlags access_flags);
AccessType vtable_accessibility_at(int i);
static bool needs_new_vtable_entry(methodHandle m, klassOop super, Handle classloader, symbolHandle classname, AccessFlags access_flags, TRAPS);
bool update_super_vtable(instanceKlass* klass, methodHandle target_method, int super_vtable_len, bool checkconstraints, TRAPS);
bool update_inherited_vtable(instanceKlass* klass, methodHandle target_method, int super_vtable_len, bool checkconstraints, TRAPS);
instanceKlass* find_transitive_override(instanceKlass* initialsuper, methodHandle target_method, int vtable_index,
Handle target_loader, symbolHandle target_classname, Thread* THREAD);
// support for miranda methods
bool is_miranda_entry_at(int i);