11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef OS_CPU_LINUX_S390_ORDERACCESS_LINUX_S390_HPP
  27 #define OS_CPU_LINUX_S390_ORDERACCESS_LINUX_S390_HPP
  28 
  29 // Included in orderAccess.hpp header file.
  30 
  31 #include "vm_version_s390.hpp"
  32 
  33 // Implementation of class OrderAccess.
  34 
  35 //
  36 // machine barrier instructions:
  37 //
  38 //   - z_sync            two-way memory barrier, aka fence
  39 //
  40 // semantic barrier instructions:
  41 // (as defined in orderAccess.hpp)
  42 //
  43 //   - z_release         orders Store|Store,    (maps to compiler barrier)
  44 //                               Load|Store
  45 //   - z_acquire         orders  Load|Store,    (maps to compiler barrier)
  46 //                               Load|Load
  47 //   - z_fence           orders Store|Store,    (maps to z_sync)
  48 //                               Load|Store,
  49 //                               Load|Load,
  50 //                              Store|Load
  51 //

  11  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  12  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  13  * version 2 for more details (a copy is included in the LICENSE file that
  14  * accompanied this code).
  15  *
  16  * You should have received a copy of the GNU General Public License version
  17  * 2 along with this work; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  19  *
  20  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  21  * or visit www.oracle.com if you need additional information or have any
  22  * questions.
  23  *
  24  */
  25 
  26 #ifndef OS_CPU_LINUX_S390_ORDERACCESS_LINUX_S390_HPP
  27 #define OS_CPU_LINUX_S390_ORDERACCESS_LINUX_S390_HPP
  28 
  29 // Included in orderAccess.hpp header file.
  30 
  31 #include "runtime/vm_version.hpp"
  32 
  33 // Implementation of class OrderAccess.
  34 
  35 //
  36 // machine barrier instructions:
  37 //
  38 //   - z_sync            two-way memory barrier, aka fence
  39 //
  40 // semantic barrier instructions:
  41 // (as defined in orderAccess.hpp)
  42 //
  43 //   - z_release         orders Store|Store,    (maps to compiler barrier)
  44 //                               Load|Store
  45 //   - z_acquire         orders  Load|Store,    (maps to compiler barrier)
  46 //                               Load|Load
  47 //   - z_fence           orders Store|Store,    (maps to z_sync)
  48 //                               Load|Store,
  49 //                               Load|Load,
  50 //                              Store|Load
  51 //