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annotate src/os_cpu/linux_sparc/vm/prefetch_linux_sparc.inline.hpp @ 4837:eff609af17d7

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7127706: G1: re-enable survivors during the initial-mark pause Summary: Re-enable survivors during the initial-mark pause. Afterwards, the concurrent marking threads have to scan them and mark everything reachable from them. The next GC will have to wait for the survivors to be scanned. Reviewed-by: brutisso, johnc
author tonyp
date Wed, 25 Jan 2012 12:58:23 -0500
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children
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1 /*
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2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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20 * or visit www.oracle.com if you need additional information or have any
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21 * questions.
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22 *
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23 */
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24
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25 #ifndef OS_CPU_LINUX_SPARC_VM_PREFETCH_LINUX_SPARC_INLINE_HPP
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26 #define OS_CPU_LINUX_SPARC_VM_PREFETCH_LINUX_SPARC_INLINE_HPP
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27
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28 #include "runtime/prefetch.hpp"
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29
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30 #if defined(COMPILER2) || defined(_LP64)
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32 inline void Prefetch::read(void *loc, intx interval) {
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33 __asm__ volatile("prefetch [%0+%1], 0" : : "r" (loc), "r" (interval) : "memory" );
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34 }
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36 inline void Prefetch::write(void *loc, intx interval) {
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37 __asm__ volatile("prefetch [%0+%1], 2" : : "r" (loc), "r" (interval) : "memory" );
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38 }
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39
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40 #else
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41
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42 inline void Prefetch::read (void *loc, intx interval) {}
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43 inline void Prefetch::write(void *loc, intx interval) {}
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44
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45 #endif
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47 #endif // OS_CPU_LINUX_SPARC_VM_PREFETCH_LINUX_SPARC_INLINE_HPP