src/share/vm/oops/klassVtable.cpp

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@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 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.

@@ -641,10 +641,38 @@
       }
     }
   }
 }
 
+// a vtable should never contain old or obsolete methods
+bool klassVtable::check_no_old_or_obsolete_entries() {
+  for (int i = 0; i < length(); i++) {
+    Method* m = unchecked_method_at(i);
+    if (m != NULL && (!m->is_valid() || m->is_old() || m->is_obsolete())) {
+      return false;
+    }
+  }
+  return true;
+}
+
+void klassVtable::dump_vtable() {
+  // adds a searchable prefix when RedefineClasses() tracing is enabled
+  RC_TRACE_NO_CR(0x00004000, (""));
+  tty->print_cr("vtable dump --");
+  for (int i = 0; i < length(); i++) {
+    Method* m = unchecked_method_at(i);
+    if (m != NULL) {
+      RC_TRACE_NO_CR(0x00004000, (""));
+      tty->print("      (%5d)  ", i);
+      m->access_flags().print_on(tty);
+      tty->print(" --  ");
+      m->print_name(tty);
+      tty->cr();
+    }
+  }
+}
+
 // CDS/RedefineClasses support - clear vtables so they can be reinitialized
 void klassVtable::clear_vtable() {
   for (int i = 0; i < _length; i++) table()[i].clear();
 }
 

@@ -831,18 +859,50 @@
           // RC_TRACE macro has an embedded ResourceMark
           RC_TRACE(0x00200000, ("itable method update: %s(%s)",
             new_method->name()->as_C_string(),
             new_method->signature()->as_C_string()));
         }
-        // Cannot break because there might be another entry for this method
+        // cannot 'break' here; see for-loop comment above.
       }
       ime++;
     }
   }
 }
 
+// an itable should never contain old or obsolete methods
+bool klassItable::check_no_old_or_obsolete_entries() {
+  itableMethodEntry* ime = method_entry(0);
+  for (int i = 0; i < _size_method_table; i++) {
+    Method* m = ime->method();
+    if (m != NULL && (!m->is_valid() || m->is_old() || m->is_obsolete())) {
+      return false;
+    }
+    ime++;
+  }
+  return true;
+}
 
+void klassItable::dump_itable() {
+  itableMethodEntry* ime = method_entry(0);
+  // adds a searchable prefix when RedefineClasses() tracing is enabled
+  RC_TRACE_NO_CR(0x00004000, (""));
+  tty->print_cr("itable dump --");
+  for (int i = 0; i < _size_method_table; i++) {
+    Method* m = ime->method();
+    if (m != NULL) {
+      RC_TRACE_NO_CR(0x00004000, (""));
+      tty->print("      (%5d)  ", i);
+      m->access_flags().print_on(tty);
+      tty->print(" --  ");
+      m->print_name(tty);
+      tty->cr();
+    }
+    ime++;
+  }
+}
+
+
 // Setup
 class InterfaceVisiterClosure : public StackObj {
  public:
   virtual void doit(Klass* intf, int method_count) = 0;
 };

@@ -1124,47 +1184,10 @@
   tty->print_cr("%6d bytes filler overhead", VtableStats::filler);
   tty->print_cr("%6d bytes for vtable entries (%d for arrays)", VtableStats::entries, VtableStats::array_entries);
   tty->print_cr("%6d bytes total", total);
 }
 
-bool klassVtable::check_no_old_entries() {
-  // Check that there really is no entry
-  for (int i = 0; i < length(); i++) {
-    Method* m = unchecked_method_at(i);
-    if (m != NULL) {
-        if (!m->is_valid() || m->is_old()) {
-            return false;
-        }
-    }
-  }
-  return true;
-}
-
-void klassVtable::dump_vtable() {
-  tty->print_cr("vtable dump --");
-  for (int i = 0; i < length(); i++) {
-    Method* m = unchecked_method_at(i);
-    if (m != NULL) {
-      tty->print("      (%5d)  ", i);
-      m->access_flags().print_on(tty);
-      tty->print(" --  ");
-      m->print_name(tty);
-      tty->cr();
-    }
-  }
-}
-
-bool klassItable::check_no_old_entries() {
-  itableMethodEntry* ime = method_entry(0);
-  for(int i = 0; i < _size_method_table; i++) {
-    Method* m = ime->method();
-    if (m != NULL && (!m->is_valid() || m->is_old())) return false;
-    ime++;
-  }
-  return true;
-}
-
 int  klassItable::_total_classes;   // Total no. of classes with itables
 long klassItable::_total_size;      // Total no. of bytes used for itables
 
 void klassItable::print_statistics() {
  tty->print_cr("itable statistics:");