hotspot/src/share/vm/utilities/accessFlags.cpp
author coleenp
Sat, 01 Sep 2012 13:25:18 -0400
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permissions -rw-r--r--
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>
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/*
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 * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "oops/oop.inline.hpp"
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#include "utilities/accessFlags.hpp"
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#ifdef TARGET_OS_FAMILY_linux
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# include "os_linux.inline.hpp"
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#endif
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#ifdef TARGET_OS_FAMILY_solaris
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# include "os_solaris.inline.hpp"
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#endif
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#ifdef TARGET_OS_FAMILY_windows
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# include "os_windows.inline.hpp"
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#endif
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#ifdef TARGET_OS_FAMILY_bsd
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# include "os_bsd.inline.hpp"
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#endif
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void AccessFlags::atomic_set_bits(jint bits) {
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  // Atomically update the flags with the bits given
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  jint old_flags, new_flags, f;
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  do {
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    old_flags = _flags;
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    new_flags = old_flags | bits;
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    f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
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  } while(f != old_flags);
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}
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void AccessFlags::atomic_clear_bits(jint bits) {
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  // Atomically update the flags with the bits given
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  jint old_flags, new_flags, f;
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  do {
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    old_flags = _flags;
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    new_flags = old_flags & ~bits;
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    f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
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  } while(f != old_flags);
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}
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#ifndef PRODUCT
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void AccessFlags::print_on(outputStream* st) const {
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  if (is_public      ()) st->print("public "      );
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  if (is_private     ()) st->print("private "     );
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  if (is_protected   ()) st->print("protected "   );
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  if (is_static      ()) st->print("static "      );
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  if (is_final       ()) st->print("final "       );
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  if (is_synchronized()) st->print("synchronized ");
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  if (is_volatile    ()) st->print("volatile "    );
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  if (is_transient   ()) st->print("transient "   );
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  if (is_native      ()) st->print("native "      );
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  if (is_interface   ()) st->print("interface "   );
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  if (is_abstract    ()) st->print("abstract "    );
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  if (is_strict      ()) st->print("strict "      );
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  if (is_synthetic   ()) st->print("synthetic "   );
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  if (is_old         ()) st->print("{old} "       );
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  if (is_obsolete    ()) st->print("{obsolete} "  );
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  if (on_stack       ()) st->print("{on_stack} "  );
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}
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#endif
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void accessFlags_init() {
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  assert(sizeof(AccessFlags) == sizeof(jint), "just checking size of flags");
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}