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8038423: G1: Decommit memory within heap

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Allow G1 to decommit memory of arbitrary regions within the heap and their associated auxiliary data structures card table, BOT, hot card cache, and mark bitmaps.

Reviewed-by: mgerdin, brutisso, jwilhelm
This commit is contained in:
Thomas Schatzl 2014-08-19 14:09:10 +02:00
parent 2617d54723
commit 100e51a339
32 changed files with 1322 additions and 579 deletions
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5
hotspot/src/share/vm/gc_implementation/g1/g1HotCardCache.hpp
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@ -78,7 +78,7 @@ class G1HotCardCache: public CHeapObj<mtGC> {
G1HotCardCache(G1CollectedHeap* g1h);
~G1HotCardCache();
void initialize();
void initialize(G1RegionToSpaceMapper* card_counts_storage);
bool use_cache() { return _use_cache; }
@ -115,9 +115,6 @@ class G1HotCardCache: public CHeapObj<mtGC> {
bool hot_cache_is_empty() { return _n_hot == 0; }
// Resizes the card counts table to match the given capacity
void resize_card_counts(size_t heap_capacity);
// Zeros the values in the card counts table for entire committed heap
void reset_card_counts();