hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp
--- a/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp Fri Dec 12 18:13:22 2014 +0000
+++ b/hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/concurrentMarkSweepGeneration.hpp Fri Dec 12 20:49:14 2014 -0800
@@ -30,9 +30,10 @@
#include "gc_implementation/shared/gcStats.hpp"
#include "gc_implementation/shared/gcWhen.hpp"
#include "gc_implementation/shared/generationCounters.hpp"
+#include "memory/cardGeneration.hpp"
#include "memory/freeBlockDictionary.hpp"
-#include "memory/generation.hpp"
#include "memory/iterator.hpp"
+#include "memory/space.hpp"
#include "runtime/mutexLocker.hpp"
#include "runtime/virtualspace.hpp"
#include "services/memoryService.hpp"
@@ -171,9 +172,7 @@
// Represents a marking stack used by the CMS collector.
// Ideally this should be GrowableArray<> just like MSC's marking stack(s).
class CMSMarkStack: public CHeapObj<mtGC> {
- //
friend class CMSCollector; // To get at expansion stats further below.
- //
VirtualSpace _virtual_space; // Space for the stack
oop* _base; // Bottom of stack
@@ -1032,6 +1031,9 @@
void set_expansion_cause(CMSExpansionCause::Cause v) { _expansion_cause = v;}
CMSExpansionCause::Cause expansion_cause() const { return _expansion_cause; }
+ // Accessing spaces
+ CompactibleSpace* space() const { return (CompactibleSpace*)_cmsSpace; }
+
private:
// For parallel young-gen GC support.
CMSParGCThreadState** _par_gc_thread_states;
@@ -1065,6 +1067,10 @@
double initiating_occupancy() const { return _initiating_occupancy; }
void init_initiating_occupancy(intx io, uintx tr);
+ void expand_for_gc_cause(size_t bytes, size_t expand_bytes, CMSExpansionCause::Cause cause);
+
+ void assert_correct_size_change_locking();
+
public:
ConcurrentMarkSweepGeneration(ReservedSpace rs, size_t initial_byte_size,
int level, CardTableRS* ct,
@@ -1101,23 +1107,14 @@
// Override
virtual void ref_processor_init();
- // Grow generation by specified size (returns false if unable to grow)
- bool grow_by(size_t bytes);
- // Grow generation to reserved size.
- bool grow_to_reserved();
-
void clear_expansion_cause() { _expansion_cause = CMSExpansionCause::_no_expansion; }
// Space enquiries
- size_t capacity() const;
- size_t used() const;
- size_t free() const;
double occupancy() const { return ((double)used())/((double)capacity()); }
size_t contiguous_available() const;
size_t unsafe_max_alloc_nogc() const;
// over-rides
- MemRegion used_region() const;
MemRegion used_region_at_save_marks() const;
// Does a "full" (forced) collection invoked on this generation collect
@@ -1128,10 +1125,6 @@
return !ScavengeBeforeFullGC;
}
- void space_iterate(SpaceClosure* blk, bool usedOnly = false);
-
- // Support for compaction
- CompactibleSpace* first_compaction_space() const;
// Adjust quantities in the generation affected by
// the compaction.
void reset_after_compaction();
@@ -1191,18 +1184,13 @@
}
// Allocation failure
- void expand(size_t bytes, size_t expand_bytes,
- CMSExpansionCause::Cause cause);
- virtual bool expand(size_t bytes, size_t expand_bytes);
void shrink(size_t bytes);
- void shrink_by(size_t bytes);
HeapWord* expand_and_par_lab_allocate(CMSParGCThreadState* ps, size_t word_sz);
bool expand_and_ensure_spooling_space(PromotionInfo* promo);
// Iteration support and related enquiries
void save_marks();
bool no_allocs_since_save_marks();
- void younger_refs_iterate(OopsInGenClosure* cl);
// Iteration support specific to CMS generations
void save_sweep_limit();