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📁 ..
📄 ck_array.h(3.06 KB)
📄 ck_backoff.h(1.84 KB)
📄 ck_barrier.h(5.31 KB)
📄 ck_bitmap.h(12.25 KB)
📄 ck_brlock.h(6.47 KB)
📄 ck_bytelock.h(5.3 KB)
📄 ck_cc.h(3.68 KB)
📄 ck_cohort.h(5.64 KB)
📄 ck_elide.h(8.74 KB)
📄 ck_epoch.h(7.82 KB)
📄 ck_fifo.h(12.87 KB)
📄 ck_hp.h(3.31 KB)
📄 ck_hp_fifo.h(5.99 KB)
📄 ck_hp_stack.h(3.08 KB)
📄 ck_hs.h(4.46 KB)
📄 ck_ht.h(6.51 KB)
📄 ck_limits.h(1.77 KB)
📄 ck_malloc.h(1.57 KB)
📄 ck_md.h(3.91 KB)
📄 ck_pflock.h(3.68 KB)
📄 ck_pr.h(31.64 KB)
📄 ck_queue.h(15.78 KB)
📄 ck_rhs.h(4.41 KB)
📄 ck_ring.h(16.8 KB)
📄 ck_rwcohort.h(11.17 KB)
📄 ck_rwlock.h(6.15 KB)
📄 ck_sequence.h(3.35 KB)
📄 ck_spinlock.h(2.46 KB)
📄 ck_stack.h(9.03 KB)
📄 ck_stdbool.h(1.42 KB)
📄 ck_stddef.h(1.42 KB)
📄 ck_stdint.h(1.55 KB)
📄 ck_stdlib.h(1.42 KB)
📄 ck_string.h(1.42 KB)
📄 ck_swlock.h(5.09 KB)
📄 ck_tflock.h(3.9 KB)
📁 gcc
📁 spinlock

Editing: ck_backoff.h

/*
 * Copyright 2009-2015 Samy Al Bahra.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifndef CK_BACKOFF_H
#define CK_BACKOFF_H

#include <ck_cc.h>
#include <ck_pr.h>

#ifndef CK_BACKOFF_CEILING
#define CK_BACKOFF_CEILING ((1 << 20) - 1)
#endif

#define CK_BACKOFF_INITIALIZER (1 << 9)

typedef unsigned int ck_backoff_t;

/*
 * This is a exponential back-off implementation.
 */
CK_CC_INLINE static void
ck_backoff_eb(unsigned int *c)
{
	unsigned int i, ceiling;

ceiling = *c;
	for (i = 0; i < ceiling; i++)
		ck_pr_barrier();

*c = ceiling <<= ceiling < CK_BACKOFF_CEILING;
	return;
}

#endif /* CK_BACKOFF_H */

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Editing: ck_backoff.h

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