diff options
Diffstat (limited to 'test/core/gpr/mpscq_test.cc')
| -rw-r--r-- | test/core/gpr/mpscq_test.cc | 194 |
1 files changed, 194 insertions, 0 deletions
diff --git a/test/core/gpr/mpscq_test.cc b/test/core/gpr/mpscq_test.cc new file mode 100644 index 0000000000..5a8177543c --- /dev/null +++ b/test/core/gpr/mpscq_test.cc @@ -0,0 +1,194 @@ +/* + * + * Copyright 2016 gRPC authors. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ + +#include "src/core/lib/gpr/mpscq.h" + +#include <stdlib.h> + +#include <grpc/support/alloc.h> +#include <grpc/support/log.h> +#include <grpc/support/sync.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 = static_cast<test_node*>(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, nullptr)->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; + gpr_event* start; +} thd_args; + +#define THREAD_ITERATIONS 10000 + +static void test_thread(void* args) { + thd_args* a = static_cast<thd_args*>(args); + gpr_event_wait(a->start, gpr_inf_future(GPR_CLOCK_REALTIME)); + 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_event start; + gpr_event_init(&start); + 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; + ta[i].start = &start; + GPR_ASSERT( + gpr_thd_new(&thds[i], "grpc_mt_test", test_thread, &ta[i], &options)); + } + size_t num_done = 0; + size_t spins = 0; + gpr_event_set(&start, (void*)1); + while (num_done != GPR_ARRAY_SIZE(thds)) { + gpr_mpscq_node* n; + while ((n = gpr_mpscq_pop(&q)) == nullptr) { + 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: %" PRIdPTR, spins); + for (size_t i = 0; i < GPR_ARRAY_SIZE(thds); i++) { + gpr_thd_join(thds[i]); + } + gpr_mpscq_destroy(&q); +} + +typedef struct { + thd_args* ta; + size_t num_thds; + gpr_mu mu; + size_t num_done; + size_t spins; + gpr_mpscq* q; + gpr_event* start; +} pull_args; + +static void pull_thread(void* arg) { + pull_args* pa = static_cast<pull_args*>(arg); + gpr_event_wait(pa->start, gpr_inf_future(GPR_CLOCK_REALTIME)); + + for (;;) { + gpr_mu_lock(&pa->mu); + if (pa->num_done == pa->num_thds) { + gpr_mu_unlock(&pa->mu); + return; + } + gpr_mpscq_node* n; + while ((n = gpr_mpscq_pop(pa->q)) == nullptr) { + pa->spins++; + } + test_node* tn = (test_node*)n; + GPR_ASSERT(*tn->ctr == tn->i - 1); + *tn->ctr = tn->i; + if (tn->i == THREAD_ITERATIONS) pa->num_done++; + gpr_free(tn); + gpr_mu_unlock(&pa->mu); + } +} + +static void test_mt_multipop(void) { + gpr_log(GPR_DEBUG, "test_mt_multipop"); + gpr_event start; + gpr_event_init(&start); + gpr_thd_id thds[100]; + gpr_thd_id pull_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; + ta[i].start = &start; + GPR_ASSERT(gpr_thd_new(&thds[i], "grpc_multipop_test", test_thread, &ta[i], + &options)); + } + pull_args pa; + pa.ta = ta; + pa.num_thds = GPR_ARRAY_SIZE(thds); + pa.spins = 0; + pa.num_done = 0; + pa.q = &q; + pa.start = &start; + gpr_mu_init(&pa.mu); + for (size_t i = 0; i < GPR_ARRAY_SIZE(pull_thds); i++) { + gpr_thd_options options = gpr_thd_options_default(); + gpr_thd_options_set_joinable(&options); + GPR_ASSERT(gpr_thd_new(&pull_thds[i], "grpc_multipop_pull", pull_thread, + &pa, &options)); + } + gpr_event_set(&start, (void*)1); + for (size_t i = 0; i < GPR_ARRAY_SIZE(pull_thds); i++) { + gpr_thd_join(pull_thds[i]); + } + gpr_log(GPR_DEBUG, "spins: %" PRIdPTR, pa.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(); + test_mt_multipop(); + return 0; +} |