31
32 // An InstanceClassLoaderKlass is a specialization of the InstanceKlass. It does
33 // not add any field. It is added to walk the dependencies for the class loader
34 // key that this class loader points to. This is how the loader_data graph is
35 // walked and dependant class loaders are kept alive. I thought we walked
36 // the list later?
37
38 class InstanceClassLoaderKlass: public InstanceKlass {
39 friend class VMStructs;
40 friend class InstanceKlass;
41
42 // Constructor
43 InstanceClassLoaderKlass(int vtable_len, int itable_len, int static_field_size, int nonstatic_oop_map_size, ReferenceType rt, AccessFlags access_flags, bool is_anonymous)
44 : InstanceKlass(vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, access_flags, is_anonymous) {}
45
46 public:
47 virtual bool oop_is_instanceClassLoader() const { return true; }
48
49 InstanceClassLoaderKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
50
51 // Iterators
52 int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) {
53 return oop_oop_iterate_v(obj, blk);
54 }
55 int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) {
56 return oop_oop_iterate_v_m(obj, blk, mr);
57 }
58
59 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \
60 int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \
61 int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, MemRegion mr);
62
63 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL)
64 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL)
65
66 #if INCLUDE_ALL_GCS
67 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \
68 int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk);
69
70 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
71 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
72 #endif // INCLUDE_ALL_GCS
73
74 // Garbage collection
75 void oop_follow_contents(oop obj);
76
77 // Parallel Scavenge and Parallel Old
78 PARALLEL_GC_DECLS
79 };
80
81 #endif // SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
|
31
32 // An InstanceClassLoaderKlass is a specialization of the InstanceKlass. It does
33 // not add any field. It is added to walk the dependencies for the class loader
34 // key that this class loader points to. This is how the loader_data graph is
35 // walked and dependant class loaders are kept alive. I thought we walked
36 // the list later?
37
38 class InstanceClassLoaderKlass: public InstanceKlass {
39 friend class VMStructs;
40 friend class InstanceKlass;
41
42 // Constructor
43 InstanceClassLoaderKlass(int vtable_len, int itable_len, int static_field_size, int nonstatic_oop_map_size, ReferenceType rt, AccessFlags access_flags, bool is_anonymous)
44 : InstanceKlass(vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, access_flags, is_anonymous) {}
45
46 public:
47 virtual bool oop_is_instanceClassLoader() const { return true; }
48
49 InstanceClassLoaderKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
50
51 // GC specific object visitors
52 //
53 // Mark Sweep
54 void oop_ms_follow_contents(oop obj);
55 int oop_ms_adjust_pointers(oop obj);
56 #if INCLUDE_ALL_GCS
57 // Parallel Scavenge
58 void oop_ps_push_contents( oop obj, PSPromotionManager* pm);
59 // Parallel Compact
60 void oop_pc_follow_contents(oop obj, ParCompactionManager* cm);
61 void oop_pc_update_pointers(oop obj);
62 #endif
63
64 // Oop fields (and metadata) iterators
65 // [nv = true] Use non-virtual calls to do_oop_nv.
66 // [nv = false] Use virtual calls to do_oop.
67 //
68 // The InstanceClassLoaderKlass iterators also visit the CLD pointer (or mirror of anonymous klasses.)
69
70 private:
71 // Forward iteration
72 // Iterate over the oop fields and metadata.
73 template <bool nv, class OopClosureType>
74 inline int oop_oop_iterate(oop obj, OopClosureType* closure);
75
76 #if INCLUDE_ALL_GCS
77 // Reverse iteration
78 // Iterate over the oop fields and metadata.
79 template <bool nv, class OopClosureType>
80 inline int oop_oop_iterate_reverse(oop obj, OopClosureType* closure);
81 #endif
82
83 // Bounded range iteration
84 // Iterate over the oop fields and metadata.
85 template <bool nv, class OopClosureType>
86 inline int oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr);
87
88 public:
89
90 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \
91 int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \
92 int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, MemRegion mr);
93
94 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL)
95 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL)
96
97 #if INCLUDE_ALL_GCS
98 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \
99 int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk);
100
101 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
102 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
103 #endif // INCLUDE_ALL_GCS
104
105 };
106
107 #endif // SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
|