src/share/vm/oops/cpCacheOop.cpp
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@@ -1,7 +1,7 @@
/*
- * Copyright (c) 1998, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2013, Oracle and/or its affiliates. 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.
@@ -468,10 +468,28 @@
}
return false;
}
+// a constant pool cache entry should never contain old or obsolete methods
+bool ConstantPoolCacheEntry::check_no_old_or_obsolete_entries() {
+ if (is_vfinal()) {
+ // virtual and final so _f2 contains method ptr instead of vtable index
+ methodOop m = (methodOop)_f2;
+ // Return false if _f2 refers to an old or an obsolete method.
+ // _f2 == NULL || !m->is_method() are just as unexpected here.
+ return (m != NULL && m->is_method() && !m->is_old() && !m->is_obsolete());
+ } else if ((oop)_f1 == NULL || !((oop)_f1)->is_method()) {
+ // _f1 == NULL || !_f1->is_method() are OK here
+ return true;
+ }
+
+ methodOop m = (methodOop)_f1;
+ // return false if _f1 refers to an old or an obsolete method
+ return (!m->is_old() && !m->is_obsolete());
+}
+
bool ConstantPoolCacheEntry::is_interesting_method_entry(klassOop k) {
if (!is_method_entry()) {
// not a method entry so not interesting by default
return false;
}
@@ -490,11 +508,11 @@
}
m = (methodOop)_f1;
}
assert(m != NULL && m->is_method(), "sanity check");
- if (m == NULL || !m->is_method() || m->method_holder() != k) {
+ if (m == NULL || !m->is_method() || (k != NULL && m->method_holder() != k)) {
// robustness for above sanity checks or method is not in
// the interesting class
return false;
}
@@ -574,6 +592,25 @@
// break out and get to the next interesting entry if there one
break;
}
}
}
+}
+
+// the constant pool cache should never contain old or obsolete methods
+bool constantPoolCacheOopDesc::check_no_old_or_obsolete_entries() {
+ for (int i = 1; i < length(); i++) {
+ if (entry_at(i)->is_interesting_method_entry(NULL) &&
+ !entry_at(i)->check_no_old_or_obsolete_entries()) {
+ return false;
+ }
+ }
+ return true;
+}
+
+void constantPoolCacheOopDesc::dump_cache() {
+ for (int i = 1; i < length(); i++) {
+ if (entry_at(i)->is_interesting_method_entry(NULL)) {
+ entry_at(i)->print(tty, i);
+ }
+ }
}