1 /* 2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2016 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 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_VM_ORDERACCESS_LINUX_S390_HPP 27 #define OS_CPU_LINUX_S390_VM_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 // | 1 /* 2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved. 3 * Copyright (c) 2016, 2019 SAP SE. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 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_VM_ORDERACCESS_LINUX_S390_HPP 27 #define OS_CPU_LINUX_S390_VM_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 // |