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comparison src/share/vm/classfile/classLoaderData.hpp @ 20260:556a06aec3fa

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8035412: Cleanup ClassLoaderData::is_alive Reviewed-by: coleenp, mgerdin
author stefank
date Fri, 21 Feb 2014 10:19:09 +0100
parents e4a6e7f1b90b
children 2c6ef90f030a
comparison
equal deleted inserted replaced
20259:4af19b914f53 20260:556a06aec3fa
147 147
148 Metaspace * _metaspace; // Meta-space where meta-data defined by the 148 Metaspace * _metaspace; // Meta-space where meta-data defined by the
149 // classes in the class loader are allocated. 149 // classes in the class loader are allocated.
150 Mutex* _metaspace_lock; // Locks the metaspace for allocations and setup. 150 Mutex* _metaspace_lock; // Locks the metaspace for allocations and setup.
151 bool _unloading; // true if this class loader goes away 151 bool _unloading; // true if this class loader goes away
152 bool _keep_alive; // if this CLD can be unloaded for anonymous loaders 152 bool _keep_alive; // if this CLD is kept alive without a keep_alive_object().
153 bool _is_anonymous; // if this CLD is for an anonymous class 153 bool _is_anonymous; // if this CLD is for an anonymous class
154 volatile int _claimed; // true if claimed, for example during GC traces. 154 volatile int _claimed; // true if claimed, for example during GC traces.
155 // To avoid applying oop closure more than once. 155 // To avoid applying oop closure more than once.
156 // Has to be an int because we cas it. 156 // Has to be an int because we cas it.
157 Klass* _klasses; // The classes defined by the class loader. 157 Klass* _klasses; // The classes defined by the class loader.
238 // method will allocate a Metaspace if needed. 238 // method will allocate a Metaspace if needed.
239 Metaspace* metaspace_non_null(); 239 Metaspace* metaspace_non_null();
240 240
241 oop class_loader() const { return _class_loader; } 241 oop class_loader() const { return _class_loader; }
242 242
243 // The object the GC is using to keep this ClassLoaderData alive.
244 oop keep_alive_object() const;
245
243 // Returns true if this class loader data is for a loader going away. 246 // Returns true if this class loader data is for a loader going away.
244 bool is_unloading() const { 247 bool is_unloading() const {
245 assert(!(is_the_null_class_loader_data() && _unloading), "The null class loader can never be unloaded"); 248 assert(!(is_the_null_class_loader_data() && _unloading), "The null class loader can never be unloaded");
246 return _unloading; 249 return _unloading;
247 } 250 }
248 // Anonymous class loader data doesn't have anything to keep them from 251
249 // being unloaded during parsing the anonymous class. 252 // Used to make sure that this CLD is not unloaded.
250 void set_keep_alive(bool value) { _keep_alive = value; } 253 void set_keep_alive(bool value) { _keep_alive = value; }
251 254
252 unsigned int identity_hash() { 255 unsigned int identity_hash() {
253 return _class_loader == NULL ? 0 : _class_loader->identity_hash(); 256 return _class_loader == NULL ? 0 : _class_loader->identity_hash();
254 } 257 }