Mercurial > hg > truffle
annotate src/os_cpu/linux_ppc/vm/prefetch_linux_ppc.inline.hpp @ 20227:63e0c47ca943
8050972: Concurrency problem in PcDesc cache
Summary: The entries of the PcDesc cache in nmethods are not declared as volatile, but they are accessed and modified by several threads concurrently.
Reviewed-by: kvn, dholmes, dcubed
author | mdoerr |
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date | Thu, 17 Jul 2014 10:21:31 +0200 |
parents | ec28f9c041ff |
children | f6bde7889409 |
rev | line source |
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1 /* |
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2 * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved. |
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3 * Copyright 2012, 2013 SAP AG. 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_PPC_VM_PREFETCH_LINUX_PPC_INLINE_HPP |
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27 #define OS_CPU_LINUX_PPC_VM_PREFETCH_LINUX_PPC_INLINE_HPP |
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28 |
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29 #include "runtime/prefetch.hpp" |
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30 |
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31 |
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32 inline void Prefetch::read(void *loc, intx interval) { |
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33 __asm__ __volatile__ ( |
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34 " dcbt 0, %0 \n" |
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35 : |
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36 : /*%0*/"r" ( ((address)loc) +((long)interval) ) |
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37 //: |
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38 ); |
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39 } |
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40 |
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41 inline void Prefetch::write(void *loc, intx interval) { |
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42 __asm__ __volatile__ ( |
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43 " dcbtst 0, %0 \n" |
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44 : |
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45 : /*%0*/"r" ( ((address)loc) +((long)interval) ) |
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46 //: |
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47 ); |
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48 } |
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49 |
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50 #endif // OS_CPU_LINUX_PPC_VM_PREFETCH_LINUX_OJDKPPC_HPP |