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Diffstat (limited to 'regressions/ck_epoch/validate/ck_stack.c')
| -rw-r--r-- | regressions/ck_epoch/validate/ck_stack.c | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/regressions/ck_epoch/validate/ck_stack.c b/regressions/ck_epoch/validate/ck_stack.c new file mode 100644 index 0000000..fc50228 --- /dev/null +++ b/regressions/ck_epoch/validate/ck_stack.c @@ -0,0 +1,164 @@ +/* + * Copyright 2010-2015 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. + */ + +#include <errno.h> +#include <inttypes.h> +#include <pthread.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <strings.h> +#include <unistd.h> +#include <sys/time.h> + +#include <ck_backoff.h> +#include <ck_cc.h> +#include <ck_pr.h> +#include <stdbool.h> +#include <stddef.h> +#include <ck_epoch.h> +#include <ck_stack.h> + +#include "../../common.h" + +static unsigned int n_threads; +static unsigned int barrier; +static unsigned int e_barrier; + +#ifndef PAIRS +#define PAIRS 5000000 +#endif + +struct node { + unsigned int value; + ck_epoch_entry_t epoch_entry; + ck_stack_entry_t stack_entry; +}; +static ck_stack_t stack = {NULL, NULL}; +static ck_epoch_t stack_epoch; +CK_STACK_CONTAINER(struct node, stack_entry, stack_container) +CK_EPOCH_CONTAINER(struct node, epoch_entry, epoch_container) +static struct affinity a; + +static void +destructor(ck_epoch_entry_t *p) +{ + struct node *e = epoch_container(p); + + free(e); + return; +} + +static void * +thread(void *unused CK_CC_UNUSED) +{ + struct node **entry, *e; + ck_epoch_record_t record; + ck_stack_entry_t *s; + unsigned long smr = 0; + unsigned int i; + + ck_epoch_register(&stack_epoch, &record); + + if (aff_iterate(&a)) { + perror("ERROR: failed to affine thread"); + exit(EXIT_FAILURE); + } + + entry = malloc(sizeof(struct node *) * PAIRS); + if (entry == NULL) { + ck_error("Failed allocation.\n"); + } + + for (i = 0; i < PAIRS; i++) { + entry[i] = malloc(sizeof(struct node)); + if (entry == NULL) { + ck_error("Failed individual allocation\n"); + } + } + + ck_pr_inc_uint(&barrier); + while (ck_pr_load_uint(&barrier) < n_threads); + + for (i = 0; i < PAIRS; i++) { + ck_epoch_begin(&record, NULL); + ck_stack_push_upmc(&stack, &entry[i]->stack_entry); + s = ck_stack_pop_upmc(&stack); + ck_epoch_end(&record, NULL); + + e = stack_container(s); + ck_epoch_call(&record, &e->epoch_entry, destructor); + smr += ck_epoch_poll(&record) == false; + } + + ck_pr_inc_uint(&e_barrier); + while (ck_pr_load_uint(&e_barrier) < n_threads); + + fprintf(stderr, "Deferrals: %lu (%2.2f)\n", smr, (double)smr / PAIRS); + fprintf(stderr, "Peak: %u (%2.2f%%), %u pending\nReclamations: %lu\n\n", + record.n_peak, + (double)record.n_peak / PAIRS * 100, + record.n_pending, + record.n_dispatch); + + ck_epoch_barrier(&record); + ck_pr_inc_uint(&e_barrier); + while (ck_pr_load_uint(&e_barrier) < (n_threads << 1)); + + if (record.n_pending != 0) { + ck_error("ERROR: %u pending, expecting none.\n", + record.n_pending); + } + + return (NULL); +} + +int +main(int argc, char *argv[]) +{ + unsigned int i; + pthread_t *threads; + + if (argc != 3) { + ck_error("Usage: stack <threads> <affinity delta>\n"); + } + + n_threads = atoi(argv[1]); + a.delta = atoi(argv[2]); + a.request = 0; + + threads = malloc(sizeof(pthread_t) * n_threads); + + ck_epoch_init(&stack_epoch); + + for (i = 0; i < n_threads; i++) + pthread_create(threads + i, NULL, thread, NULL); + + for (i = 0; i < n_threads; i++) + pthread_join(threads[i], NULL); + + return (0); +} |