Tue, 19 Aug 2014 02:05:49 -0700
8044406: JVM crash with JDK8 (build 1.8.0-b132) with G1 GC
Summary: Fill the last card that has been allocated into with a dummy object
Reviewed-by: tschatzl, mgerdin
1 /*
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23 */
25 #ifndef SHARE_VM_GC_IMPLEMENTATION_G1_G1MARKSWEEP_HPP
26 #define SHARE_VM_GC_IMPLEMENTATION_G1_G1MARKSWEEP_HPP
28 #include "gc_implementation/g1/g1CollectedHeap.inline.hpp"
29 #include "gc_implementation/g1/heapRegion.hpp"
30 #include "memory/genMarkSweep.hpp"
31 #include "memory/generation.hpp"
32 #include "memory/universe.hpp"
33 #include "oops/markOop.hpp"
34 #include "oops/oop.hpp"
35 #include "runtime/timer.hpp"
36 #include "utilities/growableArray.hpp"
38 class ReferenceProcessor;
40 // G1MarkSweep takes care of global mark-compact garbage collection for a
41 // G1CollectedHeap using a four-phase pointer forwarding algorithm. All
42 // generations are assumed to support marking; those that can also support
43 // compaction.
44 //
45 // Class unloading will only occur when a full gc is invoked.
48 class G1MarkSweep : AllStatic {
49 friend class VM_G1MarkSweep;
50 friend class Scavenge;
52 public:
54 static void invoke_at_safepoint(ReferenceProcessor* rp,
55 bool clear_all_softrefs);
57 static STWGCTimer* gc_timer() { return GenMarkSweep::_gc_timer; }
58 static SerialOldTracer* gc_tracer() { return GenMarkSweep::_gc_tracer; }
60 private:
62 // Mark live objects
63 static void mark_sweep_phase1(bool& marked_for_deopt,
64 bool clear_all_softrefs);
65 // Calculate new addresses
66 static void mark_sweep_phase2();
67 // Update pointers
68 static void mark_sweep_phase3();
69 // Move objects to new positions
70 static void mark_sweep_phase4();
72 static void allocate_stacks();
73 };
75 #endif // SHARE_VM_GC_IMPLEMENTATION_G1_G1MARKSWEEP_HPP