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8049421: G1 Class Unloading after completing a concurrent mark cycle

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Co-authored-by: Mikael Gerdin <mikael.gerdin@oracle.com>
Reviewed-by: tschatzl, ehelin, brutisso, coleenp, roland, iveresov
This commit is contained in:
Stefan Karlsson 2014-07-07 10:12:40 +02:00
parent ef1e9b3c80
commit 1b001a2afd
75 changed files with 2169 additions and 874 deletions
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7
hotspot/src/share/vm/oops/instanceKlass.hpp
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@ -197,6 +197,7 @@ class InstanceKlass: public Klass {
// _is_marked_dependent can be set concurrently, thus cannot be part of the
// _misc_flags.
bool _is_marked_dependent; // used for marking during flushing and deoptimization
bool _has_unloaded_dependent;
enum {
_misc_rewritten = 1 << 0, // methods rewritten.
@ -444,6 +445,9 @@ class InstanceKlass: public Klass {
bool is_marked_dependent() const { return _is_marked_dependent; }
void set_is_marked_dependent(bool value) { _is_marked_dependent = value; }
bool has_unloaded_dependent() const { return _has_unloaded_dependent; }
void set_has_unloaded_dependent(bool value) { _has_unloaded_dependent = value; }
// initialization (virtuals from Klass)
bool should_be_initialized() const; // means that initialize should be called
void initialize(TRAPS);
@ -922,6 +926,7 @@ class InstanceKlass: public Klass {
void clean_implementors_list(BoolObjectClosure* is_alive);
void clean_method_data(BoolObjectClosure* is_alive);
void clean_dependent_nmethods();
// Explicit metaspace deallocation of fields
// For RedefineClasses and class file parsing errors, we need to deallocate
@ -1210,7 +1215,7 @@ class nmethodBucket: public CHeapObj<mtClass> {
}
int count() { return _count; }
int increment() { _count += 1; return _count; }
int decrement() { _count -= 1; assert(_count >= 0, "don't underflow"); return _count; }
int decrement();
nmethodBucket* next() { return _next; }
void set_next(nmethodBucket* b) { _next = b; }
nmethod* get_nmethod() { return _nmethod; }