| 1 | /* Pthread mutex tunable parameters. | 
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| 2 | Copyright (C) 2018-2020 Free Software Foundation, Inc. | 
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| 3 | This file is part of the GNU C Library. | 
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| 4 |  | 
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| 5 | The GNU C Library is free software; you can redistribute it and/or | 
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| 6 | modify it under the terms of the GNU Lesser General Public | 
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| 7 | License as published by the Free Software Foundation; either | 
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| 8 | version 2.1 of the License, or (at your option) any later version. | 
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| 9 |  | 
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| 10 | The GNU C Library is distributed in the hope that it will be useful, | 
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | 
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU | 
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| 13 | Lesser General Public License for more details. | 
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| 14 |  | 
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| 15 | You should have received a copy of the GNU Lesser General Public | 
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| 16 | License along with the GNU C Library; if not, see | 
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| 17 | <https://www.gnu.org/licenses/>.  */ | 
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| 18 | #ifndef _PTHREAD_MUTEX_CONF_H | 
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| 19 | #define _PTHREAD_MUTEX_CONF_H 1 | 
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| 20 |  | 
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| 21 | #include <adaptive_spin_count.h> | 
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| 22 |  | 
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| 23 | #if HAVE_TUNABLES | 
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| 24 | struct mutex_config | 
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| 25 | { | 
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| 26 | int spin_count; | 
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| 27 | }; | 
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| 28 |  | 
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| 29 | extern struct mutex_config __mutex_aconf attribute_hidden; | 
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| 30 |  | 
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| 31 | extern void __pthread_tunables_init (void) attribute_hidden; | 
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| 32 | #endif | 
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| 33 |  | 
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| 34 | #endif | 
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| 35 |  | 
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