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ck_array.c
(6 KB)
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ck_barrier_centralized.c
(2.14 KB)
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ck_barrier_combining.c
(5.95 KB)
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ck_barrier_dissemination.c
(4.09 KB)
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ck_barrier_mcs.c
(4.3 KB)
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ck_barrier_tournament.c
(5.65 KB)
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ck_epoch.c
(17.65 KB)
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ck_hp.c
(8.1 KB)
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ck_hs.c
(21.42 KB)
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ck_ht.c
(24.56 KB)
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ck_ht_hash.h
(6.67 KB)
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ck_internal.h
(2.48 KB)
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ck_rhs.c
(35.84 KB)
Editing: ck_barrier_centralized.c
/* * Copyright 2011-2015 Samy Al Bahra. * Copyright 2011 David Joseph. * 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. */ #include <ck_barrier.h> #include <ck_pr.h> void ck_barrier_centralized(struct ck_barrier_centralized *barrier, struct ck_barrier_centralized_state *state, unsigned int n_threads) { unsigned int sense, value; /* * Every execution context has a sense associated with it. * This sense is reversed when the barrier is entered. Every * thread will spin on the global sense until the last thread * reverses it. */ sense = state->sense = ~state->sense; value = ck_pr_faa_uint(&barrier->value, 1); if (value == n_threads - 1) { ck_pr_store_uint(&barrier->value, 0); ck_pr_fence_memory(); ck_pr_store_uint(&barrier->sense, sense); return; } ck_pr_fence_atomic_load(); while (sense != ck_pr_load_uint(&barrier->sense)) ck_pr_stall(); ck_pr_fence_acquire(); return; }
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