diff options
Diffstat (limited to 'regressions/ck_epoch/validate/ck_epoch_section_2.c')
| -rw-r--r-- | regressions/ck_epoch/validate/ck_epoch_section_2.c | 195 |
1 files changed, 195 insertions, 0 deletions
diff --git a/regressions/ck_epoch/validate/ck_epoch_section_2.c b/regressions/ck_epoch/validate/ck_epoch_section_2.c new file mode 100644 index 0000000..aed3661 --- /dev/null +++ b/regressions/ck_epoch/validate/ck_epoch_section_2.c @@ -0,0 +1,195 @@ +/* + * 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 <assert.h> +#include <pthread.h> +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <ck_cc.h> +#include <ck_pr.h> +#include <stdbool.h> +#include <stddef.h> +#include <string.h> +#include <ck_epoch.h> +#include <ck_stack.h> + +#include "../../common.h" + +static unsigned int n_rd; +static unsigned int n_wr; +static unsigned int n_threads; +static unsigned int barrier; +static unsigned int leave; + +#ifndef PAIRS_S +#define PAIRS_S 10000 +#endif + +#ifndef CK_EPOCH_T_DEPTH +#define CK_EPOCH_T_DEPTH 8 +#endif + +static ck_epoch_t epoch; +static struct affinity a; + +static void * +read_thread(void *unused CK_CC_UNUSED) +{ + ck_epoch_record_t *record; + unsigned long long i = 0; + + record = malloc(sizeof *record); + assert(record != NULL); + ck_epoch_register(&epoch, record); + + if (aff_iterate(&a)) { + perror("ERROR: failed to affine thread"); + exit(EXIT_FAILURE); + } + + ck_pr_inc_uint(&barrier); + while (ck_pr_load_uint(&barrier) < n_threads); + + for (;;) { + ck_epoch_section_t section[2]; + ck_epoch_section_t junk[CK_EPOCH_T_DEPTH]; + unsigned int j; + + ck_epoch_begin(record, §ion[0]); + + for (j = 0; j < CK_EPOCH_T_DEPTH; j++) + ck_epoch_begin(record, &junk[j]); + for (j = 0; j < CK_EPOCH_T_DEPTH; j++) + ck_epoch_end(record, &junk[j]); + + if (i > 0) + ck_epoch_end(record, §ion[1]); + + /* Wait for the next synchronize operation. */ + while ((ck_pr_load_uint(&epoch.epoch) & 1) == + section[0].bucket) { + i++; + + if (!(i % 10000000)) { + fprintf(stderr, "%u %u %u\n", + ck_pr_load_uint(&epoch.epoch), + section[0].bucket, record->epoch); + } + + while ((ck_pr_load_uint(&epoch.epoch) & 1) == + section[0].bucket) { + if (ck_pr_load_uint(&leave) == 1) + break; + + ck_pr_stall(); + } + } + + ck_epoch_begin(record, §ion[1]); + + assert(section[0].bucket != section[1].bucket); + ck_epoch_end(record, §ion[0]); + + assert(ck_pr_load_uint(&record->active) > 0); + + if (ck_pr_load_uint(&leave) == 1) { + ck_epoch_end(record, §ion[1]); + break; + } + + i++; + } + + return NULL; +} + +static void * +write_thread(void *unused CK_CC_UNUSED) +{ + ck_epoch_record_t record; + unsigned long iterations = 0; + + ck_epoch_register(&epoch, &record); + + if (aff_iterate(&a)) { + perror("ERROR: failed to affine thread"); + exit(EXIT_FAILURE); + } + + ck_pr_inc_uint(&barrier); + while (ck_pr_load_uint(&barrier) < n_threads); + + for (;;) { + if (!(iterations % 1048575)) + fprintf(stderr, "."); + + ck_epoch_synchronize(&record); + iterations++; + + if (ck_pr_load_uint(&leave) == 1) + break; + } + + fprintf(stderr, "%lu iterations\n", iterations); + return NULL; +} + +int +main(int argc, char *argv[]) +{ + unsigned int i; + pthread_t *threads; + + if (argc != 4) { + ck_error("Usage: stack <#readers> <#writers> <affinity delta>\n"); + } + + n_rd = atoi(argv[1]); + n_wr = atoi(argv[2]); + n_threads = n_wr + n_rd; + + a.delta = atoi(argv[3]); + a.request = 0; + + threads = malloc(sizeof(pthread_t) * n_threads); + ck_epoch_init(&epoch); + + for (i = 0; i < n_rd; i++) + pthread_create(threads + i, NULL, read_thread, NULL); + + do { + pthread_create(threads + i, NULL, write_thread, NULL); + } while (++i < n_wr + n_rd); + + common_sleep(10); + ck_pr_store_uint(&leave, 1); + + for (i = 0; i < n_threads; i++) + pthread_join(threads[i], NULL); + + return (0); +} |