Mercurial > hg > graal-compiler
comparison src/share/vm/memory/collectorPolicy.cpp @ 1888:a7214d79fcf1
6896603: CMS/GCH: collection_attempt_is_safe() ergo should use more recent data
Summary: 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
| author | ysr |
|---|---|
| date | Sat, 23 Oct 2010 23:03:49 -0700 |
| parents | a8b66e00933b |
| children | f95d63e2154a |
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| 1887:cd3ef3fd20dd | 1888:a7214d79fcf1 |
|---|---|
| 657 if (!gch->is_maximal_no_gc()) { | 657 if (!gch->is_maximal_no_gc()) { |
| 658 result = expand_heap_and_allocate(size, is_tlab); | 658 result = expand_heap_and_allocate(size, is_tlab); |
| 659 } | 659 } |
| 660 return result; // could be null if we are out of space | 660 return result; // could be null if we are out of space |
| 661 } else if (!gch->incremental_collection_will_fail()) { | 661 } else if (!gch->incremental_collection_will_fail()) { |
| 662 // The gc_prologues have not executed yet. The value | |
| 663 // for incremental_collection_will_fail() is the remanent | |
| 664 // of the last collection. | |
| 665 // Do an incremental collection. | 662 // Do an incremental collection. |
| 666 gch->do_collection(false /* full */, | 663 gch->do_collection(false /* full */, |
| 667 false /* clear_all_soft_refs */, | 664 false /* clear_all_soft_refs */, |
| 668 size /* size */, | 665 size /* size */, |
| 669 is_tlab /* is_tlab */, | 666 is_tlab /* is_tlab */, |
| 737 bool GenCollectorPolicy::should_try_older_generation_allocation( | 734 bool GenCollectorPolicy::should_try_older_generation_allocation( |
| 738 size_t word_size) const { | 735 size_t word_size) const { |
| 739 GenCollectedHeap* gch = GenCollectedHeap::heap(); | 736 GenCollectedHeap* gch = GenCollectedHeap::heap(); |
| 740 size_t gen0_capacity = gch->get_gen(0)->capacity_before_gc(); | 737 size_t gen0_capacity = gch->get_gen(0)->capacity_before_gc(); |
| 741 return (word_size > heap_word_size(gen0_capacity)) | 738 return (word_size > heap_word_size(gen0_capacity)) |
| 742 || (GC_locker::is_active_and_needs_gc()) | 739 || GC_locker::is_active_and_needs_gc() |
| 743 || ( gch->last_incremental_collection_failed() | 740 || gch->incremental_collection_failed(); |
| 744 && gch->incremental_collection_will_fail()); | |
| 745 } | 741 } |
| 746 | 742 |
| 747 | 743 |
| 748 // | 744 // |
| 749 // MarkSweepPolicy methods | 745 // MarkSweepPolicy methods |