--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/share/vm/classfile/loaderConstraints.hpp Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,133 @@
+/*
+ * Copyright 2003-2006 Sun Microsystems, Inc. All Rights Reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+class LoaderConstraintEntry;
+
+class LoaderConstraintTable : public Hashtable {
+ friend class VMStructs;
+private:
+
+ enum Constants {
+ _loader_constraint_size = 107, // number of entries in constraint table
+ _nof_buckets = 1009 // number of buckets in hash table
+ };
+
+ LoaderConstraintEntry** find_loader_constraint(symbolHandle name,
+ Handle loader);
+
+public:
+
+ LoaderConstraintTable(int nof_buckets);
+
+ LoaderConstraintEntry* new_entry(unsigned int hash, symbolOop name,
+ klassOop klass, int num_loaders,
+ int max_loaders);
+
+ LoaderConstraintEntry* bucket(int i) {
+ return (LoaderConstraintEntry*)Hashtable::bucket(i);
+ }
+
+ LoaderConstraintEntry** bucket_addr(int i) {
+ return (LoaderConstraintEntry**)Hashtable::bucket_addr(i);
+ }
+
+ // GC support
+ void oops_do(OopClosure* f);
+ void always_strong_classes_do(OopClosure* blk);
+
+ // Check class loader constraints
+ bool add_entry(symbolHandle name, klassOop klass1, Handle loader1,
+ klassOop klass2, Handle loader2);
+
+ void check_signature_loaders(symbolHandle signature, Handle loader1,
+ Handle loader2, bool is_method, TRAPS);
+
+ klassOop find_constrained_klass(symbolHandle name, Handle loader);
+ klassOop find_constrained_elem_klass(symbolHandle name, symbolHandle elem_name,
+ Handle loader, TRAPS);
+
+
+ // Class loader constraints
+
+ void ensure_loader_constraint_capacity(LoaderConstraintEntry *p, int nfree);
+ void extend_loader_constraint(LoaderConstraintEntry* p, Handle loader,
+ klassOop klass);
+ void merge_loader_constraints(LoaderConstraintEntry** pp1,
+ LoaderConstraintEntry** pp2, klassOop klass);
+
+ bool check_or_update(instanceKlassHandle k, Handle loader,
+ symbolHandle name);
+
+
+ void purge_loader_constraints(BoolObjectClosure* is_alive);
+
+ void verify(Dictionary* dictionary);
+#ifndef PRODUCT
+ void print();
+#endif
+};
+
+class LoaderConstraintEntry : public HashtableEntry {
+ friend class VMStructs;
+private:
+ symbolOop _name; // class name
+ int _num_loaders;
+ int _max_loaders;
+ oop* _loaders; // initiating loaders
+
+public:
+
+ klassOop klass() { return (klassOop)literal(); }
+ klassOop* klass_addr() { return (klassOop*)literal_addr(); }
+ void set_klass(klassOop k) { set_literal(k); }
+
+ LoaderConstraintEntry* next() {
+ return (LoaderConstraintEntry*)HashtableEntry::next();
+ }
+
+ LoaderConstraintEntry** next_addr() {
+ return (LoaderConstraintEntry**)HashtableEntry::next_addr();
+ }
+ void set_next(LoaderConstraintEntry* next) {
+ HashtableEntry::set_next(next);
+ }
+
+ symbolOop name() { return _name; }
+ symbolOop* name_addr() { return &_name; }
+ void set_name(symbolOop name) { _name = name; }
+
+ int num_loaders() { return _num_loaders; }
+ void set_num_loaders(int i) { _num_loaders = i; }
+
+ int max_loaders() { return _max_loaders; }
+ void set_max_loaders(int i) { _max_loaders = i; }
+
+ oop* loaders() { return _loaders; }
+ void set_loaders(oop* loaders) { _loaders = loaders; }
+
+ oop loader(int i) { return _loaders[i]; }
+ oop* loader_addr(int i) { return &_loaders[i]; }
+ void set_loader(int i, oop p) { _loaders[i] = p; }
+
+};