Tue, 05 Aug 2014 15:41:12 -0700
8034056: assert(_heap_alignment >= _space_alignment) failed: heap_alignment less than space_alignment
Reviewed-by: tschatzl, tamao
1 /*
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25 #ifndef SHARE_VM_MEMORY_REFERENCEPOLICY_HPP
26 #define SHARE_VM_MEMORY_REFERENCEPOLICY_HPP
28 // referencePolicy is used to determine when soft reference objects
29 // should be cleared.
32 class ReferencePolicy : public CHeapObj<mtGC> {
33 public:
34 virtual bool should_clear_reference(oop p, jlong timestamp_clock) {
35 ShouldNotReachHere();
36 return true;
37 }
39 // Capture state (of-the-VM) information needed to evaluate the policy
40 virtual void setup() { /* do nothing */ }
41 };
43 class NeverClearPolicy : public ReferencePolicy {
44 public:
45 virtual bool should_clear_reference(oop p, jlong timestamp_clock) {
46 return false;
47 }
48 };
50 class AlwaysClearPolicy : public ReferencePolicy {
51 public:
52 virtual bool should_clear_reference(oop p, jlong timestamp_clock) {
53 return true;
54 }
55 };
57 class LRUCurrentHeapPolicy : public ReferencePolicy {
58 private:
59 jlong _max_interval;
61 public:
62 LRUCurrentHeapPolicy();
64 // Capture state (of-the-VM) information needed to evaluate the policy
65 void setup();
66 virtual bool should_clear_reference(oop p, jlong timestamp_clock);
67 };
69 class LRUMaxHeapPolicy : public ReferencePolicy {
70 private:
71 jlong _max_interval;
73 public:
74 LRUMaxHeapPolicy();
76 // Capture state (of-the-VM) information needed to evaluate the policy
77 void setup();
78 virtual bool should_clear_reference(oop p, jlong timestamp_clock);
79 };
81 #endif // SHARE_VM_MEMORY_REFERENCEPOLICY_HPP