Mercurial > hg > truffle
diff src/share/vm/oops/klassVtable.cpp @ 676:d3676b4cb78c
Merge
author | kvn |
---|---|
date | Tue, 31 Mar 2009 10:02:01 -0700 |
parents | 4aaa9f5e02a8 c89f86385056 |
children | cff162798819 |
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--- a/src/share/vm/oops/klassVtable.cpp Fri Mar 27 16:58:30 2009 -0700 +++ b/src/share/vm/oops/klassVtable.cpp Tue Mar 31 10:02:01 2009 -0700 @@ -1,5 +1,5 @@ /* - * 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 @@ -1148,6 +1148,27 @@ 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;