g1RootClosures.hpp revision 11020:c0ea2e3ebe83 
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24
25#ifndef SHARE_VM_GC_G1_G1ROOTCLOSURESET_HPP
26#define SHARE_VM_GC_G1_G1ROOTCLOSURESET_HPP
27
28#include "memory/allocation.hpp"
29#include "memory/iterator.hpp"
30
31class G1CollectedHeap;
32class G1ParScanThreadState;
33
34class G1RootClosures : public CHeapObj<mtGC> {
35public:
36  // Closures to process raw oops in the root set.
37  virtual OopClosure* weak_oops() = 0;
38  virtual OopClosure* strong_oops() = 0;
39
40  // Closures to process CLDs in the root set.
41  virtual CLDClosure* weak_clds() = 0;
42  virtual CLDClosure* strong_clds() = 0;
43
44  // Applied to code blobs reachable as strong roots.
45  virtual CodeBlobClosure* strong_codeblobs() = 0;
46};
47
48class G1EvacuationRootClosures : public G1RootClosures {
49  static G1EvacuationRootClosures* create_root_closures_ext(G1ParScanThreadState* pss, G1CollectedHeap* g1h);
50public:
51  // Flush any buffered state and deferred processing
52  virtual void flush() = 0;
53  virtual double closure_app_seconds() = 0;
54
55  // Applied to the weakly reachable CLDs when all strongly reachable
56  // CLDs are guaranteed to have been processed.
57  virtual CLDClosure* second_pass_weak_clds() = 0;
58
59  // Get a raw oop closure for processing oops, bypassing the flushing above.
60  virtual OopClosure* raw_strong_oops() = 0;
61
62  // Applied to code blobs treated as weak roots.
63  virtual CodeBlobClosure* weak_codeblobs() = 0;
64
65  // Is this closure used for tracing metadata?
66  virtual bool trace_metadata() = 0;
67
68  static G1EvacuationRootClosures* create_root_closures(G1ParScanThreadState* pss, G1CollectedHeap* g1h);
69};
70
71#endif // SHARE_VM_GC_G1_G1ROOTCLOSURESET_HPP
72