Mercurial > jdk8-mips64-public > hotspot / file diff

     1.1 --- a/src/share/vm/gc_implementation/shared/markSweep.cpp	Mon Aug 31 05:27:29 2009 -0700
     1.2 +++ b/src/share/vm/gc_implementation/shared/markSweep.cpp	Wed Sep 02 00:04:29 2009 -0700
     1.3 @@ -27,6 +27,7 @@
     1.4  
     1.5  GrowableArray<oop>*     MarkSweep::_marking_stack       = NULL;
     1.6  GrowableArray<Klass*>*  MarkSweep::_revisit_klass_stack = NULL;
     1.7 +GrowableArray<DataLayout*>*  MarkSweep::_revisit_mdo_stack = NULL;
     1.8  
     1.9  GrowableArray<oop>*     MarkSweep::_preserved_oop_stack = NULL;
    1.10  GrowableArray<markOop>* MarkSweep::_preserved_mark_stack= NULL;
    1.11 @@ -62,12 +63,37 @@
    1.12  void MarkSweep::follow_weak_klass_links() {
    1.13    // All klasses on the revisit stack are marked at this point.
    1.14    // Update and follow all subklass, sibling and implementor links.
    1.15 +  if (PrintRevisitStats) {
    1.16 +    gclog_or_tty->print_cr("#classes in system dictionary = %d", SystemDictionary::number_of_classes());
    1.17 +    gclog_or_tty->print_cr("Revisit klass stack length = %d", _revisit_klass_stack->length());
    1.18 +  }
    1.19    for (int i = 0; i < _revisit_klass_stack->length(); i++) {
    1.20      _revisit_klass_stack->at(i)->follow_weak_klass_links(&is_alive,&keep_alive);
    1.21    }
    1.22    follow_stack();
    1.23  }
    1.24  
    1.25 +#if ( defined(COMPILER1) || defined(COMPILER2) )
    1.26 +void MarkSweep::revisit_mdo(DataLayout* p) {
    1.27 +  _revisit_mdo_stack->push(p);
    1.28 +}
    1.29 +
    1.30 +void MarkSweep::follow_mdo_weak_refs() {
    1.31 +  // All strongly reachable oops have been marked at this point;
    1.32 +  // we can visit and clear any weak references from MDO's which
    1.33 +  // we memoized during the strong marking phase.
    1.34 +  assert(_marking_stack->is_empty(), "Marking stack should be empty");
    1.35 +  if (PrintRevisitStats) {
    1.36 +    gclog_or_tty->print_cr("#classes in system dictionary = %d", SystemDictionary::number_of_classes());
    1.37 +    gclog_or_tty->print_cr("Revisit MDO stack length = %d", _revisit_mdo_stack->length());
    1.38 +  }
    1.39 +  for (int i = 0; i < _revisit_mdo_stack->length(); i++) {
    1.40 +    _revisit_mdo_stack->at(i)->follow_weak_refs(&is_alive);
    1.41 +  }
    1.42 +  follow_stack();
    1.43 +}
    1.44 +#endif //  ( COMPILER1 || COMPILER2 )
    1.45 +
    1.46  MarkSweep::FollowRootClosure  MarkSweep::follow_root_closure;
    1.47  
    1.48  void MarkSweep::FollowRootClosure::do_oop(oop* p)       { follow_root(p); }