1 /*
   2  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  *
  23  */
  24 
  25 #include "precompiled.hpp"
  26 #include "oops/oop.inline.hpp"
  27 #include "utilities/accessFlags.hpp"
  28 #ifdef TARGET_OS_FAMILY_linux
  29 # include "os_linux.inline.hpp"
  30 #endif
  31 #ifdef TARGET_OS_FAMILY_solaris
  32 # include "os_solaris.inline.hpp"
  33 #endif
  34 #ifdef TARGET_OS_FAMILY_windows
  35 # include "os_windows.inline.hpp"
  36 #endif
  37 
  38 
  39 void AccessFlags::atomic_set_bits(jint bits) {
  40   // Atomically update the flags with the bits given
  41   jint old_flags, new_flags, f;
  42   do {
  43     old_flags = _flags;
  44     new_flags = old_flags | bits;
  45     f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
  46   } while(f != old_flags);
  47 }
  48 
  49 void AccessFlags::atomic_clear_bits(jint bits) {
  50   // Atomically update the flags with the bits given
  51   jint old_flags, new_flags, f;
  52   do {
  53     old_flags = _flags;
  54     new_flags = old_flags & ~bits;
  55     f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
  56   } while(f != old_flags);
  57 }
  58 
  59 #ifndef PRODUCT
  60 
  61 void AccessFlags::print_on(outputStream* st) const {
  62   if (is_public      ()) st->print("public "      );
  63   if (is_private     ()) st->print("private "     );
  64   if (is_protected   ()) st->print("protected "   );
  65   if (is_static      ()) st->print("static "      );
  66   if (is_final       ()) st->print("final "       );
  67   if (is_synchronized()) st->print("synchronized ");
  68   if (is_volatile    ()) st->print("volatile "    );
  69   if (is_transient   ()) st->print("transient "   );
  70   if (is_native      ()) st->print("native "      );
  71   if (is_interface   ()) st->print("interface "   );
  72   if (is_abstract    ()) st->print("abstract "    );
  73   if (is_strict      ()) st->print("strict "      );
  74   if (is_synthetic   ()) st->print("synthetic "   );
  75   if (is_old         ()) st->print("{old} "       );
  76   if (is_obsolete    ()) st->print("{obsolete} "  );
  77 }
  78 
  79 #endif
  80 
  81 void accessFlags_init() {
  82   assert(sizeof(AccessFlags) == sizeof(jint), "just checking size of flags");
  83 }