84 // find_and_add returns probe pointer - old or new
85 // If no entry exists, add a placeholder entry and push SeenThread for classloadAction
86 // If entry exists, reuse entry and push SeenThread for classloadAction
87 PlaceholderEntry* find_and_add(int index, unsigned int hash,
88 Symbol* name, ClassLoaderData* loader_data,
89 classloadAction action, Symbol* supername,
90 Thread* thread);
91
92 void remove_entry(int index, unsigned int hash,
93 Symbol* name, ClassLoaderData* loader_data);
94
95 // find_and_remove first removes SeenThread for classloadAction
96 // If all queues are empty and definer is null, remove the PlacheholderEntry completely
97 void find_and_remove(int index, unsigned int hash,
98 Symbol* name, ClassLoaderData* loader_data,
99 classloadAction action, Thread* thread);
100
101 // GC support.
102 void classes_do(KlassClosure* f);
103
104 // JVMTI support
105 void entries_do(void f(Symbol*));
106
107 #ifndef PRODUCT
108 void print();
109 #endif
110 void verify();
111 };
112
113 // SeenThread objects represent list of threads that are
114 // currently performing a load action on a class.
115 // For class circularity, set before loading a superclass.
116 // For bootclasssearchpath, set before calling load_instance_class.
117 // Defining must be single threaded on a class/classloader basis
118 // For DEFINE_CLASS, the head of the queue owns the
119 // define token and the rest of the threads wait to return the
120 // result the first thread gets.
121 class SeenThread: public CHeapObj<mtInternal> {
122 private:
123 Thread *_thread;
124 SeenThread* _stnext;
125 SeenThread* _stprev;
126 public:
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84 // find_and_add returns probe pointer - old or new
85 // If no entry exists, add a placeholder entry and push SeenThread for classloadAction
86 // If entry exists, reuse entry and push SeenThread for classloadAction
87 PlaceholderEntry* find_and_add(int index, unsigned int hash,
88 Symbol* name, ClassLoaderData* loader_data,
89 classloadAction action, Symbol* supername,
90 Thread* thread);
91
92 void remove_entry(int index, unsigned int hash,
93 Symbol* name, ClassLoaderData* loader_data);
94
95 // find_and_remove first removes SeenThread for classloadAction
96 // If all queues are empty and definer is null, remove the PlacheholderEntry completely
97 void find_and_remove(int index, unsigned int hash,
98 Symbol* name, ClassLoaderData* loader_data,
99 classloadAction action, Thread* thread);
100
101 // GC support.
102 void classes_do(KlassClosure* f);
103
104 #ifndef PRODUCT
105 void print();
106 #endif
107 void verify();
108 };
109
110 // SeenThread objects represent list of threads that are
111 // currently performing a load action on a class.
112 // For class circularity, set before loading a superclass.
113 // For bootclasssearchpath, set before calling load_instance_class.
114 // Defining must be single threaded on a class/classloader basis
115 // For DEFINE_CLASS, the head of the queue owns the
116 // define token and the rest of the threads wait to return the
117 // result the first thread gets.
118 class SeenThread: public CHeapObj<mtInternal> {
119 private:
120 Thread *_thread;
121 SeenThread* _stnext;
122 SeenThread* _stprev;
123 public:
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