22 *
23 */
24
25 #ifndef SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
26 #define SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
27
28 #include "oops/instanceKlass.hpp"
29 #include "utilities/macros.hpp"
30
31 // An InstanceClassLoaderKlass is a specialization of the InstanceKlass. It does
32 // not add any field. It is added to walk the dependencies for the class loader
33 // key that this class loader points to. This is how the loader_data graph is
34 // walked and dependant class loaders are kept alive. I thought we walked
35 // the list later?
36
37 class InstanceClassLoaderKlass: public InstanceKlass {
38 friend class VMStructs;
39 friend class InstanceKlass;
40
41 // Constructor
42 InstanceClassLoaderKlass(int vtable_len, int itable_len, int static_field_size, int nonstatic_oop_map_size, ReferenceType rt, AccessFlags access_flags, bool is_anonymous)
43 : InstanceKlass(vtable_len, itable_len, static_field_size, nonstatic_oop_map_size, rt, access_flags, is_anonymous) {}
44
45 public:
46 virtual bool oop_is_instanceClassLoader() const { return true; }
47
48 InstanceClassLoaderKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
49
50 // Iterators
51 int oop_oop_iterate(oop obj, ExtendedOopClosure* blk) {
52 return oop_oop_iterate_v(obj, blk);
53 }
54 int oop_oop_iterate_m(oop obj, ExtendedOopClosure* blk, MemRegion mr) {
55 return oop_oop_iterate_v_m(obj, blk, mr);
56 }
57
58 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL(OopClosureType, nv_suffix) \
59 int oop_oop_iterate##nv_suffix(oop obj, OopClosureType* blk); \
60 int oop_oop_iterate##nv_suffix##_m(oop obj, OopClosureType* blk, MemRegion mr);
61
62 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL)
63 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_DECL)
64
65 #if INCLUDE_ALL_GCS
66 #define InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL(OopClosureType, nv_suffix) \
67 int oop_oop_iterate_backwards##nv_suffix(oop obj, OopClosureType* blk);
68
69 ALL_OOP_OOP_ITERATE_CLOSURES_1(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
70 ALL_OOP_OOP_ITERATE_CLOSURES_2(InstanceClassLoaderKlass_OOP_OOP_ITERATE_BACKWARDS_DECL)
71 #endif // INCLUDE_ALL_GCS
72
73 // Garbage collection
74 void oop_follow_contents(oop obj);
75
76 // Parallel Scavenge and Parallel Old
77 PARALLEL_GC_DECLS
78 };
79
80 #endif // SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
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22 *
23 */
24
25 #ifndef SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
26 #define SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
27
28 #include "oops/instanceKlass.hpp"
29 #include "utilities/macros.hpp"
30
31 // An InstanceClassLoaderKlass is a specialization of the InstanceKlass. It does
32 // not add any field. It is added to walk the dependencies for the class loader
33 // key that this class loader points to. This is how the loader_data graph is
34 // walked and dependant class loaders are kept alive. I thought we walked
35 // the list later?
36
37 class InstanceClassLoaderKlass: public InstanceKlass {
38 friend class VMStructs;
39 friend class InstanceKlass;
40
41 // Constructor
42 InstanceClassLoaderKlass(int vtable_len, int itable_len, int static_field_size, int nonstatic_oop_map_size, ReferenceType rt, AccessFlags access_flags, bool is_anonymous);
43
44 public:
45 virtual bool oop_is_instanceClassLoader() const { return true; }
46
47 InstanceClassLoaderKlass() { assert(DumpSharedSpaces || UseSharedSpaces, "only for CDS"); }
48
49 static InstanceClassLoaderKlass* cast(Klass* k) {
50 assert(k->is_klass(), "must be");
51 assert(k->oop_is_instanceClassLoader(), "cast to instanceClassLoaderKlass");
52 return (InstanceClassLoaderKlass*) k;
53 }
54
55 template <bool nv, typename OopClosureType>
56 int oop_oop_iterate(oop obj, OopClosureType* blk);
57
58 template <bool nv, typename OopClosureType>
59 int oop_oop_iterate_m(oop obj, OopClosureType* blk, MemRegion mr);
60
61 #if INCLUDE_ALL_GCS
62 template <bool nv, typename OopClosureType>
63 int oop_oop_iterate_backwards(oop obj, OopClosureType* blk);
64 #endif // INCLUDE_ALL_GCS
65
66 // Garbage collection
67 void oop_follow_contents(oop obj);
68
69 // Parallel Scavenge and Parallel Old
70 PARALLEL_GC_DECLS
71 };
72
73 #endif // SHARE_VM_OOPS_INSTANCECLASSLOADERKLASS_HPP
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