archive/jdk
1
0
Fork 0
mirror of https://github.com/openjdk/jdk.git synced 2025-09-18 18:14:38 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions

6896603: CMS/GCH: collection_attempt_is_safe() ergo should use more recent data

Browse source 
Deprecated HandlePromotionFailure, removing the ability to turn off that feature, did away with one epoch look-ahead when deciding if a scavenge is likely to fail, relying on current data.

Reviewed-by: jmasa, johnc, poonam
This commit is contained in:
Y. Srinivas Ramakrishna 2010-10-23 23:03:49 -07:00
parent 554e77efb4
commit cbc7f8756a
14 changed files with 101 additions and 222 deletions
Download patch file Download diff file Expand all files Collapse all files

14
hotspot/src/share/vm/memory/defNewGeneration.hpp
View file

@ -82,12 +82,6 @@ protected:
Stack<oop> _objs_with_preserved_marks;
Stack<markOop> _preserved_marks_of_objs;
// Returns true if the collection can be safely attempted.
// If this method returns false, a collection is not
// guaranteed to fail but the system may not be able
// to recover from the failure.
bool collection_attempt_is_safe();
// Promotion failure handling
OopClosure *_promo_failure_scan_stack_closure;
void set_promo_failure_scan_stack_closure(OopClosure *scan_stack_closure) {
@ -304,6 +298,14 @@ protected:
// GC support
virtual void compute_new_size();
// Returns true if the collection is likely to be safely
// completed. Even if this method returns true, a collection
// may not be guaranteed to succeed, and the system should be
// able to safely unwind and recover from that failure, albeit
// at some additional cost. Override superclass's implementation.
virtual bool collection_attempt_is_safe();
virtual void collect(bool full,
bool clear_all_soft_refs,
size_t size,