Mercurial > hg > truffle
diff src/share/vm/oops/typeArrayOop.hpp @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | f08d439fab8c |
| children | d8ce2825b193 |
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--- a/src/share/vm/oops/typeArrayOop.hpp Fri Aug 31 16:39:35 2012 -0700 +++ b/src/share/vm/oops/typeArrayOop.hpp Sat Sep 01 13:25:18 2012 -0400 @@ -1,5 +1,5 @@ /* - * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved. + * Copyright (c) 1997, 2012, 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 @@ -151,6 +151,23 @@ jbyte byte_at_acquire(int which) const { return OrderAccess::load_acquire(byte_at_addr(which)); } void release_byte_at_put(int which, jbyte contents) { OrderAccess::release_store(byte_at_addr(which), contents); } + // Java thinks metadata arrays are just arrays of either long or int, since + // there doesn't seem to be T_ADDRESS, so this is a bit of unfortunate + // casting +#ifdef _LP64 + Metadata* metadata_at(int which) const { + return (Metadata*)*long_at_addr(which); } + void metadata_at_put(int which, Metadata* contents) { + *long_at_addr(which) = (long)contents; + } +#else + Metadata* metadata_at(int which) const { + return (Metadata*)*int_at_addr(which); } + void metadata_at_put(int which, Metadata* contents) { + *int_at_addr(which) = (int)contents; + } +#endif // _LP64 + // Sizing // Returns the number of words necessary to hold an array of "len"