Mercurial > hg > graal-jvmci-8
annotate src/share/vm/runtime/orderAccess.cpp @ 8854:754c24457b20
7112912: Message "Error occurred during initialization of VM" on boxes with lots of RAM
Summary: Ergonomics now also takes available virtual memory into account when deciding for a heap size. The helper method to determine the maximum allocatable memory block now uses the appropriate OS specific calls to retrieve available virtual memory for the java process. In 32 bit environments this method now also searches for the maximum actually reservable amount of memory. Merge previously separate implementations for Linux/BSD/Solaris into a single method.
Reviewed-by: jmasa, tamao
author | tschatzl |
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date | Wed, 27 Mar 2013 19:21:18 +0100 |
parents | f95d63e2154a |
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0 | 1 /* |
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6973570: OrderAccess::storestore() scales poorly on multi-socket x64 and sparc: cache-line ping-ponging
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2 * Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved. |
0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
4 * | |
5 * This code is free software; you can redistribute it and/or modify it | |
6 * under the terms of the GNU General Public License version 2 only, as | |
7 * published by the Free Software Foundation. | |
8 * | |
9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
12 * version 2 for more details (a copy is included in the LICENSE file that | |
13 * accompanied this code). | |
14 * | |
15 * You should have received a copy of the GNU General Public License version | |
16 * 2 along with this work; if not, write to the Free Software Foundation, | |
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
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. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #include "precompiled.hpp" |
26 #include "runtime/orderAccess.hpp" | |
27 #include "runtime/stubRoutines.hpp" | |
28 #include "runtime/thread.hpp" | |
0 | 29 |
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6822204: volatile fences should prefer lock:addl to actual mfence instructions
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30 void OrderAccess::StubRoutines_fence() { |
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31 // Use a stub if it exists. It may not exist during bootstrap so do |
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32 // nothing in that case but assert if no fence code exists after threads have been created |
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33 void (*func)() = CAST_TO_FN_PTR(void (*)(), StubRoutines::fence_entry()); |
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34 |
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35 if (func != NULL) { |
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36 (*func)(); |
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37 return; |
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38 } |
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39 assert(Threads::number_of_threads() == 0, "for bootstrap only"); |
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40 } |