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8048268: G1 Code Root Migration performs poorly

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Replace G1CodeRootSet with a Hashtable based implementation, merge Code Root Migration phase into Code Root Scanning

Reviewed-by: jmasa, brutisso, tschatzl
This commit is contained in:
Mikael Gerdin 2014-08-29 13:12:21 +02:00
parent 6fc8764c65
commit 10379e7e82
17 changed files with 437 additions and 677 deletions
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6
hotspot/src/share/vm/gc_implementation/g1/g1CollectedHeap.hpp
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@ -1662,12 +1662,6 @@ public:
// Unregister the given nmethod from the G1 heap.
virtual void unregister_nmethod(nmethod* nm);
// Migrate the nmethods in the code root lists of the regions
// in the collection set to regions in to-space. In the event
// of an evacuation failure, nmethods that reference objects
// that were not successfully evacuated are not migrated.
void migrate_strong_code_roots();
// Free up superfluous code root memory.
void purge_code_root_memory();