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2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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23
24#ifndef SHARE_VM_OOPS_INSTANCEMIRRORKLASS_INLINE_HPP
25#define SHARE_VM_OOPS_INSTANCEMIRRORKLASS_INLINE_HPP
26
27#include "classfile/javaClasses.hpp"
28#include "oops/instanceKlass.inline.hpp"
29#include "oops/instanceMirrorKlass.hpp"
30#include "oops/klass.hpp"
31#include "oops/oop.inline.hpp"
32#include "utilities/debug.hpp"
33#include "utilities/globalDefinitions.hpp"
34#include "utilities/macros.hpp"
35
36template <bool nv, typename T, class OopClosureType>
37void InstanceMirrorKlass::oop_oop_iterate_statics_specialized(oop obj, OopClosureType* closure) {
38  T* p         = (T*)start_of_static_fields(obj);
39  T* const end = p + java_lang_Class::static_oop_field_count(obj);
40
41  for (; p < end; ++p) {
42    Devirtualizer<nv>::do_oop(closure, p);
43  }
44}
45
46template <bool nv, class OopClosureType>
47void InstanceMirrorKlass::oop_oop_iterate_statics(oop obj, OopClosureType* closure) {
48  if (UseCompressedOops) {
49    oop_oop_iterate_statics_specialized<nv, narrowOop>(obj, closure);
50  } else {
51    oop_oop_iterate_statics_specialized<nv, oop>(obj, closure);
52  }
53}
54
55template <bool nv, class OopClosureType>
56void InstanceMirrorKlass::oop_oop_iterate(oop obj, OopClosureType* closure) {
57  InstanceKlass::oop_oop_iterate<nv>(obj, closure);
58
59  if (Devirtualizer<nv>::do_metadata(closure)) {
60    Klass* klass = java_lang_Class::as_Klass(obj);
61    // We'll get NULL for primitive mirrors.
62    if (klass != NULL) {
63      if (klass->is_instance_klass() && InstanceKlass::cast(klass)->is_anonymous()) {
64        // An anonymous class doesn't have its own class loader, so when handling
65        // the java mirror for an anonymous class we need to make sure its class
66        // loader data is claimed, this is done by calling do_cld explicitly.
67        // For non-anonymous classes the call to do_cld is made when the class
68        // loader itself is handled.
69        Devirtualizer<nv>::do_cld(closure, klass->class_loader_data());
70      } else {
71        Devirtualizer<nv>::do_klass(closure, klass);
72      }
73    } else {
74      // If klass is NULL then this a mirror for a primitive type.
75      // We don't have to follow them, since they are handled as strong
76      // roots in Universe::oops_do.
77      assert(java_lang_Class::is_primitive(obj), "Sanity check");
78    }
79  }
80
81  oop_oop_iterate_statics<nv>(obj, closure);
82}
83
84#if INCLUDE_ALL_GCS
85template <bool nv, class OopClosureType>
86void InstanceMirrorKlass::oop_oop_iterate_reverse(oop obj, OopClosureType* closure) {
87  InstanceKlass::oop_oop_iterate_reverse<nv>(obj, closure);
88
89  InstanceMirrorKlass::oop_oop_iterate_statics<nv>(obj, closure);
90}
91#endif
92
93template <bool nv, typename T, class OopClosureType>
94void InstanceMirrorKlass::oop_oop_iterate_statics_specialized_bounded(oop obj,
95                                                                     OopClosureType* closure,
96                                                                     MemRegion mr) {
97  T* p   = (T*)start_of_static_fields(obj);
98  T* end = p + java_lang_Class::static_oop_field_count(obj);
99
100  T* const l   = (T*)mr.start();
101  T* const h   = (T*)mr.end();
102  assert(mask_bits((intptr_t)l, sizeof(T)-1) == 0 &&
103         mask_bits((intptr_t)h, sizeof(T)-1) == 0,
104         "bounded region must be properly aligned");
105
106  if (p < l) {
107    p = l;
108  }
109  if (end > h) {
110    end = h;
111  }
112
113  for (;p < end; ++p) {
114    Devirtualizer<nv>::do_oop(closure, p);
115  }
116}
117
118template <bool nv, class OopClosureType>
119void InstanceMirrorKlass::oop_oop_iterate_statics_bounded(oop obj, OopClosureType* closure, MemRegion mr) {
120  if (UseCompressedOops) {
121    oop_oop_iterate_statics_specialized_bounded<nv, narrowOop>(obj, closure, mr);
122  } else {
123    oop_oop_iterate_statics_specialized_bounded<nv, oop>(obj, closure, mr);
124  }
125}
126
127template <bool nv, class OopClosureType>
128void InstanceMirrorKlass::oop_oop_iterate_bounded(oop obj, OopClosureType* closure, MemRegion mr) {
129  InstanceKlass::oop_oop_iterate_bounded<nv>(obj, closure, mr);
130
131  if (Devirtualizer<nv>::do_metadata(closure)) {
132    if (mr.contains(obj)) {
133      Klass* klass = java_lang_Class::as_Klass(obj);
134      // We'll get NULL for primitive mirrors.
135      if (klass != NULL) {
136        Devirtualizer<nv>::do_klass(closure, klass);
137      }
138    }
139  }
140
141  oop_oop_iterate_statics_bounded<nv>(obj, closure, mr);
142}
143
144#define ALL_INSTANCE_MIRROR_KLASS_OOP_OOP_ITERATE_DEFN(OopClosureType, nv_suffix)  \
145  OOP_OOP_ITERATE_DEFN(          InstanceMirrorKlass, OopClosureType, nv_suffix)   \
146  OOP_OOP_ITERATE_DEFN_BOUNDED(  InstanceMirrorKlass, OopClosureType, nv_suffix)   \
147  OOP_OOP_ITERATE_DEFN_BACKWARDS(InstanceMirrorKlass, OopClosureType, nv_suffix)
148
149#endif // SHARE_VM_OOPS_INSTANCEMIRRORKLASS_INLINE_HPP
150