truffle: src/share/vm/oops/klassVtable.cpp comparison

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equal deleted inserted replaced

-:9ab385cb0c42
+:d3676b4cb78c
 /*
-* Copyright 1997-2008 Sun Microsystems, Inc.  All Rights Reserved.
+* Copyright 1997-2009 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.
 index--;
 }
 return index;
 }
+// inverse to compute_itable_index
+methodOop klassItable::method_for_itable_index(klassOop intf, int itable_index) {
+assert(instanceKlass::cast(intf)->is_interface(), "sanity check");
+objArrayOop methods = instanceKlass::cast(intf)->methods();
+int index = itable_index;
+// Adjust for <clinit>, which is left out of table if first method
+if (methods->length() > 0 && ((methodOop)methods->obj_at(0))->name() == vmSymbols::class_initializer_name()) {
+index++;
+}
+if (itable_index < 0 || index >= methods->length())
+return NULL;                // help caller defend against bad indexes
+methodOop m = (methodOop)methods->obj_at(index);
+assert(compute_itable_index(m) == itable_index, "correct inverse");
+return m;
+}
 void klassVtable::verify(outputStream* st, bool forced) {
 // make sure table is initialized
 if (!Universe::is_fully_initialized()) return;
 #ifndef PRODUCT
 // avoid redundant verifies

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