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1 /* |
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2 * Copyright (c) 2003, 2018, Oracle and/or its affiliates. All rights reserved. |
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3 * Copyright (c) 2014, Red Hat Inc. All rights reserved. |
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4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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5 * |
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6 * This code is free software; you can redistribute it and/or modify it |
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7 * under the terms of the GNU General Public License version 2 only, as |
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8 * published by the Free Software Foundation. |
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9 * |
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10 * This code is distributed in the hope that it will be useful, but WITHOUT |
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11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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13 * version 2 for more details (a copy is included in the LICENSE file that |
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14 * accompanied this code). |
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15 * |
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16 * You should have received a copy of the GNU General Public License version |
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17 * 2 along with this work; if not, write to the Free Software Foundation, |
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18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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19 * |
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20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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21 * or visit www.oracle.com if you need additional information or have any |
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22 * questions. |
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23 * |
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24 */ |
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25 |
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26 #ifndef OS_CPU_LINUX_AARCH64_VM_ORDERACCESS_LINUX_AARCH64_HPP |
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27 #define OS_CPU_LINUX_AARCH64_VM_ORDERACCESS_LINUX_AARCH64_HPP |
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28 |
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29 // Included in orderAccess.hpp header file. |
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30 |
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31 #include "vm_version_aarch64.hpp" |
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32 |
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33 // Implementation of class OrderAccess. |
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34 |
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35 inline void OrderAccess::loadload() { acquire(); } |
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36 inline void OrderAccess::storestore() { release(); } |
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37 inline void OrderAccess::loadstore() { acquire(); } |
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38 inline void OrderAccess::storeload() { fence(); } |
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39 |
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40 inline void OrderAccess::acquire() { |
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41 READ_MEM_BARRIER; |
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42 } |
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43 |
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44 inline void OrderAccess::release() { |
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45 WRITE_MEM_BARRIER; |
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46 } |
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47 |
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48 inline void OrderAccess::fence() { |
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49 FULL_MEM_BARRIER; |
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50 } |
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51 |
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52 template<size_t byte_size> |
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53 struct OrderAccess::PlatformOrderedLoad<byte_size, X_ACQUIRE> |
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54 { |
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55 template <typename T> |
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56 T operator()(const volatile T* p) const { T data; __atomic_load(p, &data, __ATOMIC_ACQUIRE); return data; } |
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57 }; |
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58 |
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59 template<size_t byte_size> |
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60 struct OrderAccess::PlatformOrderedStore<byte_size, RELEASE_X> |
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61 { |
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62 template <typename T> |
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63 void operator()(T v, volatile T* p) const { __atomic_store(p, &v, __ATOMIC_RELEASE); } |
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64 }; |
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65 |
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66 template<size_t byte_size> |
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67 struct OrderAccess::PlatformOrderedStore<byte_size, RELEASE_X_FENCE> |
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68 { |
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69 template <typename T> |
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70 void operator()(T v, volatile T* p) const { release_store(p, v); fence(); } |
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71 }; |
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72 |
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73 #endif // OS_CPU_LINUX_AARCH64_VM_ORDERACCESS_LINUX_AARCH64_HPP |