diff options
author | Craig Tiller <ctiller@google.com> | 2016-05-02 22:13:48 -0700 |
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committer | Craig Tiller <ctiller@google.com> | 2016-05-02 22:13:48 -0700 |
commit | 18879dcff91209abb0e5851b2e78efbecf341a6b (patch) | |
tree | c9b80b097fc804f439906881da0bc695160a323c /test/core | |
parent | e49429587bbf01ff741a218c86a11fe2b59a0b5c (diff) |
Add cacheline padding, and a test
Diffstat (limited to 'test/core')
-rw-r--r-- | test/core/support/mpscq_test.c | 124 |
1 files changed, 124 insertions, 0 deletions
diff --git a/test/core/support/mpscq_test.c b/test/core/support/mpscq_test.c new file mode 100644 index 0000000000..393949dc52 --- /dev/null +++ b/test/core/support/mpscq_test.c @@ -0,0 +1,124 @@ +/* + * + * Copyright 2016, Google Inc. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions are + * met: + * + * * Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * * 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. + * * Neither the name of Google Inc. nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS 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 COPYRIGHT + * OWNER 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 "src/core/lib/support/mpscq.h" + +#include <stdlib.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/thd.h> +#include <grpc/support/useful.h> +#include "test/core/util/test_config.h" + +typedef struct test_node { + gpr_mpscq_node node; + size_t i; + size_t *ctr; +} test_node; + +static test_node *new_node(size_t i, size_t *ctr) { + test_node *n = gpr_malloc(sizeof(test_node)); + n->i = i; + n->ctr = ctr; + return n; +} + +static void test_serial(void) { + gpr_log(GPR_DEBUG, "test_serial"); + gpr_mpscq q; + gpr_mpscq_init(&q); + for (size_t i = 0; i < 10000000; i++) { + gpr_mpscq_push(&q, &new_node(i, NULL)->node); + } + for (size_t i = 0; i < 10000000; i++) { + test_node *n = (test_node *)gpr_mpscq_pop(&q); + GPR_ASSERT(n); + GPR_ASSERT(n->i == i); + gpr_free(n); + } +} + +typedef struct { + size_t ctr; + gpr_mpscq *q; +} thd_args; + +#define THREAD_ITERATIONS 1000000 + +static void test_thread(void *args) { + thd_args *a = args; + for (size_t i = 1; i <= THREAD_ITERATIONS; i++) { + gpr_mpscq_push(a->q, &new_node(i, &a->ctr)->node); + } +} + +static void test_mt(void) { + gpr_log(GPR_DEBUG, "test_mt"); + gpr_thd_id thds[100]; + thd_args ta[GPR_ARRAY_SIZE(thds)]; + gpr_mpscq q; + gpr_mpscq_init(&q); + for (size_t i = 0; i < GPR_ARRAY_SIZE(thds); i++) { + gpr_thd_options options = gpr_thd_options_default(); + gpr_thd_options_set_joinable(&options); + ta[i].ctr = 0; + ta[i].q = &q; + GPR_ASSERT(gpr_thd_new(&thds[i], test_thread, &ta[i], &options)); + } + size_t num_done = 0; + size_t spins = 0; + while (num_done != GPR_ARRAY_SIZE(thds)) { + gpr_mpscq_node *n; + while ((n = gpr_mpscq_pop(&q)) == NULL) { + spins++; + } + test_node *tn = (test_node *)n; + GPR_ASSERT(*tn->ctr == tn->i - 1); + *tn->ctr = tn->i; + if (tn->i == THREAD_ITERATIONS) num_done++; + gpr_free(tn); + } + gpr_log(GPR_DEBUG, "spins: %d", spins); + for (size_t i = 0; i < GPR_ARRAY_SIZE(thds); i++) { + gpr_thd_join(thds[i]); + } + gpr_mpscq_destroy(&q); +} + +int main(int argc, char **argv) { + grpc_test_init(argc, argv); + test_serial(); + test_mt(); + return 0; +} |