g1RootClosures.hpp revision 9164:5f32f22ba25e 
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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 the CLDs reachable from the thread stacks.
45  virtual CLDClosure* thread_root_clds() = 0;
46
47  // Applied to code blobs reachable as strong roots.
48  virtual CodeBlobClosure* strong_codeblobs() = 0;
49};
50
51class G1EvacuationRootClosures : public G1RootClosures {
52public:
53  // Flush any buffered state and deferred processing
54  virtual void flush() = 0;
55  virtual double closure_app_seconds() = 0;
56
57  // Applied to the weakly reachable CLDs when all strongly reachable
58  // CLDs are guaranteed to have been processed.
59  virtual CLDClosure* second_pass_weak_clds() = 0;
60
61  // Get a raw oop closure for processing oops, bypassing the flushing above.
62  virtual OopClosure* raw_strong_oops() = 0;
63
64  // Applied to code blobs treated as weak roots.
65  virtual CodeBlobClosure* weak_codeblobs() = 0;
66
67  // Is this closure used for tracing metadata?
68  virtual bool trace_metadata() = 0;
69
70  static G1EvacuationRootClosures* create_root_closures(G1ParScanThreadState* pss, G1CollectedHeap* g1h);
71};
72
73#endif // SHARE_VM_GC_G1_G1ROOTCLOSURESET_HPP
74