Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/contrib/ck/include/ck_spinlock.h
Version:
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1 /* 2 * Copyright 2010-2015 Samy Al Bahra. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 #ifndef CK_SPINLOCK_H 28 #define CK_SPINLOCK_H 29 30 #include "spinlock/anderson.h" 31 #include "spinlock/cas.h" 32 #include "spinlock/clh.h" 33 #include "spinlock/dec.h" 34 #include "spinlock/fas.h" 35 #include "spinlock/hclh.h" 36 #include "spinlock/mcs.h" 37 #include "spinlock/ticket.h" 38 39 /* 40 * On tested x86, x86_64, PPC64 and SPARC64 targets, 41 * ck_spinlock_fas proved to have lowest latency 42 * in fast path testing or negligible degradation 43 * from faster but less robust implementations. 44 */ 45 #define CK_SPINLOCK_INITIALIZER CK_SPINLOCK_FAS_INITIALIZER 46 #define ck_spinlock_t ck_spinlock_fas_t 47 #define ck_spinlock_init(x) ck_spinlock_fas_init(x) 48 #define ck_spinlock_lock(x) ck_spinlock_fas_lock(x) 49 #define ck_spinlock_lock_eb(x) ck_spinlock_fas_lock_eb(x) 50 #define ck_spinlock_unlock(x) ck_spinlock_fas_unlock(x) 51 #define ck_spinlock_locked(x) ck_spinlock_fas_locked(x) 52 #define ck_spinlock_trylock(x) ck_spinlock_fas_trylock(x) 53 54 CK_ELIDE_PROTOTYPE(ck_spinlock, ck_spinlock_t, 55 ck_spinlock_locked, ck_spinlock_lock, 56 ck_spinlock_locked, ck_spinlock_unlock) 57 58 CK_ELIDE_TRYLOCK_PROTOTYPE(ck_spinlock, ck_spinlock_t, 59 ck_spinlock_locked, ck_spinlock_trylock) 60 61 #endif /* CK_SPINLOCK_H */
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