Mercurial > hg > truffle
annotate src/os/linux/vm/globals_linux.hpp @ 890:6cb8e9df7174
6819077: G1: first GC thread coming late into the GC.
Summary: The first worker thread is delayed when entering the GC because it clears the card count table that is used in identifying hot cards. Replace the card count table with a dynamically sized evicting hash table that includes an epoch based counter.
Reviewed-by: iveresov, tonyp
author | johnc |
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date | Tue, 04 Aug 2009 16:00:17 -0700 |
parents | ad8c8ca4ab0f |
children | c18cbe5936b8 |
rev | line source |
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0 | 1 /* |
470 | 2 * Copyright 2005-2008 Sun Microsystems, Inc. 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 * | |
19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, | |
20 * CA 95054 USA or visit www.sun.com if you need additional information or | |
21 * have any questions. | |
22 * | |
23 */ | |
24 | |
25 // | |
26 // Defines Linux specific flags. They are not available on other platforms. | |
27 // | |
28 #define RUNTIME_OS_FLAGS(develop, develop_pd, product, product_pd, diagnostic, notproduct) \ | |
29 product(bool, UseOprofile, false, \ | |
30 "enable support for Oprofile profiler") \ | |
31 \ | |
32 product(bool, UseLinuxPosixThreadCPUClocks, false, \ | |
33 "enable fast Linux Posix clocks where available") \ | |
34 | |
35 | |
36 // | |
37 // Defines Linux-specific default values. The flags are available on all | |
38 // platforms, but they may have different default values on other platforms. | |
39 // | |
40 define_pd_global(bool, UseLargePages, false); | |
389
ee21eaa8ffe1
6660681: Incrementally reserve pages on win server 2003 for better large page affinity
jmasa
parents:
0
diff
changeset
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41 define_pd_global(bool, UseLargePagesIndividualAllocation, false); |
0 | 42 define_pd_global(bool, UseOSErrorReporting, false); |
43 define_pd_global(bool, UseThreadPriorities, true) ; |