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

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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
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7
hotspot/src/share/vm/runtime/globals.hpp
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@ -1786,10 +1786,6 @@ class CommandLineFlags {
notproduct(bool, GCALotAtAllSafepoints, false, \
"Enforce ScavengeALot/GCALot at all potential safepoints") \
\
product(bool, HandlePromotionFailure, true, \
"The youngest generation collection does not require " \
"a guarantee of full promotion of all live objects.") \
\
product(bool, PrintPromotionFailure, false, \
"Print additional diagnostic information following " \
" promotion failure") \
@ -3003,9 +2999,6 @@ class CommandLineFlags {
product(intx, NewRatio, 2, \
"Ratio of new/old generation sizes") \
\
product(uintx, MaxLiveObjectEvacuationRatio, 100, \
"Max percent of eden objects that will be live at scavenge") \
\
product_pd(uintx, NewSizeThreadIncrease, \
"Additional size added to desired new generation size per " \
"non-daemon thread (in bytes)") \