src/share/vm/utilities/accessFlags.cpp

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   1 /*
   2  * Copyright (c) 1997, 2012, 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  *


  42 void AccessFlags::atomic_set_bits(jint bits) {
  43   // Atomically update the flags with the bits given
  44   jint old_flags, new_flags, f;
  45   do {
  46     old_flags = _flags;
  47     new_flags = old_flags | bits;
  48     f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
  49   } while(f != old_flags);
  50 }
  51 
  52 void AccessFlags::atomic_clear_bits(jint bits) {
  53   // Atomically update the flags with the bits given
  54   jint old_flags, new_flags, f;
  55   do {
  56     old_flags = _flags;
  57     new_flags = old_flags & ~bits;
  58     f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
  59   } while(f != old_flags);
  60 }
  61 
  62 #ifndef PRODUCT
  63 
  64 void AccessFlags::print_on(outputStream* st) const {
  65   if (is_public      ()) st->print("public "      );
  66   if (is_private     ()) st->print("private "     );
  67   if (is_protected   ()) st->print("protected "   );
  68   if (is_static      ()) st->print("static "      );
  69   if (is_final       ()) st->print("final "       );
  70   if (is_synchronized()) st->print("synchronized ");
  71   if (is_volatile    ()) st->print("volatile "    );
  72   if (is_transient   ()) st->print("transient "   );
  73   if (is_native      ()) st->print("native "      );
  74   if (is_interface   ()) st->print("interface "   );
  75   if (is_abstract    ()) st->print("abstract "    );
  76   if (is_strict      ()) st->print("strict "      );
  77   if (is_synthetic   ()) st->print("synthetic "   );
  78   if (is_old         ()) st->print("{old} "       );
  79   if (is_obsolete    ()) st->print("{obsolete} "  );
  80   if (on_stack       ()) st->print("{on_stack} "  );
  81 }
  82 
  83 #endif
  84 
  85 void accessFlags_init() {
  86   assert(sizeof(AccessFlags) == sizeof(jint), "just checking size of flags");
  87 }
   1 /*
   2  * Copyright (c) 1997, 2013, 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  *


  42 void AccessFlags::atomic_set_bits(jint bits) {
  43   // Atomically update the flags with the bits given
  44   jint old_flags, new_flags, f;
  45   do {
  46     old_flags = _flags;
  47     new_flags = old_flags | bits;
  48     f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
  49   } while(f != old_flags);
  50 }
  51 
  52 void AccessFlags::atomic_clear_bits(jint bits) {
  53   // Atomically update the flags with the bits given
  54   jint old_flags, new_flags, f;
  55   do {
  56     old_flags = _flags;
  57     new_flags = old_flags & ~bits;
  58     f = Atomic::cmpxchg(new_flags, &_flags, old_flags);
  59   } while(f != old_flags);
  60 }
  61 
  62 #if !defined(PRODUCT) || INCLUDE_JVMTI
  63 
  64 void AccessFlags::print_on(outputStream* st) const {
  65   if (is_public      ()) st->print("public "      );
  66   if (is_private     ()) st->print("private "     );
  67   if (is_protected   ()) st->print("protected "   );
  68   if (is_static      ()) st->print("static "      );
  69   if (is_final       ()) st->print("final "       );
  70   if (is_synchronized()) st->print("synchronized ");
  71   if (is_volatile    ()) st->print("volatile "    );
  72   if (is_transient   ()) st->print("transient "   );
  73   if (is_native      ()) st->print("native "      );
  74   if (is_interface   ()) st->print("interface "   );
  75   if (is_abstract    ()) st->print("abstract "    );
  76   if (is_strict      ()) st->print("strict "      );
  77   if (is_synthetic   ()) st->print("synthetic "   );
  78   if (is_old         ()) st->print("{old} "       );
  79   if (is_obsolete    ()) st->print("{obsolete} "  );
  80   if (on_stack       ()) st->print("{on_stack} "  );
  81 }
  82 
  83 #endif // !PRODUCT || INCLUDE_JVMTI
  84 
  85 void accessFlags_init() {
  86   assert(sizeof(AccessFlags) == sizeof(jint), "just checking size of flags");
  87 }