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- // Licensed to the Apache Software Foundation (ASF) under one
- // or more contributor license agreements. See the NOTICE file
- // distributed with this work for additional information
- // regarding copyright ownership. The ASF licenses this file
- // to you 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 <gtest/gtest.h>
- #include <gflags/gflags.h>
- #include "butil/atomicops.h"
- #include "butil/time.h"
- #include "butil/macros.h"
- #include "butil/logging.h"
- #include "butil/thread_local.h"
- #include <bthread/butex.h>
- #include "butil/logging.h"
- #include "bthread/bthread.h"
- #include "bthread/task_control.h"
- namespace bthread {
- extern TaskControl* g_task_control;
- }
- namespace {
- void* dummy(void*) {
- return NULL;
- }
- TEST(BthreadTest, setconcurrency) {
- ASSERT_EQ(8 + BTHREAD_EPOLL_THREAD_NUM, (size_t)bthread_getconcurrency());
- ASSERT_EQ(EINVAL, bthread_setconcurrency(BTHREAD_MIN_CONCURRENCY - 1));
- ASSERT_EQ(EINVAL, bthread_setconcurrency(0));
- ASSERT_EQ(EINVAL, bthread_setconcurrency(-1));
- ASSERT_EQ(EINVAL, bthread_setconcurrency(BTHREAD_MAX_CONCURRENCY + 1));
- ASSERT_EQ(0, bthread_setconcurrency(BTHREAD_MIN_CONCURRENCY));
- ASSERT_EQ(BTHREAD_MIN_CONCURRENCY, bthread_getconcurrency());
- ASSERT_EQ(0, bthread_setconcurrency(BTHREAD_MIN_CONCURRENCY + 1));
- ASSERT_EQ(BTHREAD_MIN_CONCURRENCY + 1, bthread_getconcurrency());
- ASSERT_EQ(0, bthread_setconcurrency(BTHREAD_MIN_CONCURRENCY)); // smaller value
- bthread_t th;
- ASSERT_EQ(0, bthread_start_urgent(&th, NULL, dummy, NULL));
- ASSERT_EQ(BTHREAD_MIN_CONCURRENCY + 1, bthread_getconcurrency());
- ASSERT_EQ(0, bthread_setconcurrency(BTHREAD_MIN_CONCURRENCY + 5));
- ASSERT_EQ(BTHREAD_MIN_CONCURRENCY + 5, bthread_getconcurrency());
- ASSERT_EQ(EPERM, bthread_setconcurrency(BTHREAD_MIN_CONCURRENCY + 1));
- ASSERT_EQ(BTHREAD_MIN_CONCURRENCY + 5, bthread_getconcurrency());
- }
- static butil::atomic<int> *odd;
- static butil::atomic<int> *even;
- static butil::atomic<int> nbthreads(0);
- static butil::atomic<int> npthreads(0);
- static BAIDU_THREAD_LOCAL bool counted = false;
- static butil::atomic<bool> stop (false);
- static void *odd_thread(void *) {
- nbthreads.fetch_add(1);
- while (!stop) {
- if (!counted) {
- counted = true;
- npthreads.fetch_add(1);
- }
- bthread::butex_wake_all(even);
- bthread::butex_wait(odd, 0, NULL);
- }
- return NULL;
- }
- static void *even_thread(void *) {
- nbthreads.fetch_add(1);
- while (!stop) {
- if (!counted) {
- counted = true;
- npthreads.fetch_add(1);
- }
- bthread::butex_wake_all(odd);
- bthread::butex_wait(even, 0, NULL);
- }
- return NULL;
- }
- TEST(BthreadTest, setconcurrency_with_running_bthread) {
- odd = bthread::butex_create_checked<butil::atomic<int> >();
- even = bthread::butex_create_checked<butil::atomic<int> >();
- ASSERT_TRUE(odd != NULL && even != NULL);
- *odd = 0;
- *even = 0;
- std::vector<bthread_t> tids;
- const int N = 500;
- for (int i = 0; i < N; ++i) {
- bthread_t tid;
- bthread_start_background(&tid, &BTHREAD_ATTR_SMALL, odd_thread, NULL);
- tids.push_back(tid);
- bthread_start_background(&tid, &BTHREAD_ATTR_SMALL, even_thread, NULL);
- tids.push_back(tid);
- }
- for (int i = 100; i <= N; ++i) {
- ASSERT_EQ(0, bthread_setconcurrency(i));
- ASSERT_EQ(i, bthread_getconcurrency());
- }
- usleep(1000 * N);
- *odd = 1;
- *even = 1;
- stop = true;
- bthread::butex_wake_all(odd);
- bthread::butex_wake_all(even);
- for (size_t i = 0; i < tids.size(); ++i) {
- bthread_join(tids[i], NULL);
- }
- LOG(INFO) << "All bthreads has quit";
- ASSERT_EQ(2*N, nbthreads);
- // This is not necessarily true, not all workers need to run sth.
- //ASSERT_EQ(N, npthreads);
- LOG(INFO) << "Touched pthreads=" << npthreads;
- }
- void* sleep_proc(void*) {
- usleep(100000);
- return NULL;
- }
- void* add_concurrency_proc(void*) {
- bthread_t tid;
- bthread_start_background(&tid, &BTHREAD_ATTR_SMALL, sleep_proc, NULL);
- bthread_join(tid, NULL);
- return NULL;
- }
- bool set_min_concurrency(int num) {
- std::stringstream ss;
- ss << num;
- std::string ret = GFLAGS_NS::SetCommandLineOption("bthread_min_concurrency", ss.str().c_str());
- return !ret.empty();
- }
- int get_min_concurrency() {
- std::string ret;
- GFLAGS_NS::GetCommandLineOption("bthread_min_concurrency", &ret);
- return atoi(ret.c_str());
- }
- TEST(BthreadTest, min_concurrency) {
- ASSERT_EQ(1, set_min_concurrency(-1)); // set min success
- ASSERT_EQ(1, set_min_concurrency(0)); // set min success
- ASSERT_EQ(0, get_min_concurrency());
- int conn = bthread_getconcurrency();
- int add_conn = 100;
- ASSERT_EQ(0, set_min_concurrency(conn + 1)); // set min failed
- ASSERT_EQ(0, get_min_concurrency());
- ASSERT_EQ(1, set_min_concurrency(conn - 1)); // set min success
- ASSERT_EQ(conn - 1, get_min_concurrency());
- ASSERT_EQ(EINVAL, bthread_setconcurrency(conn - 2)); // set max failed
- ASSERT_EQ(0, bthread_setconcurrency(conn + add_conn + 1)); // set max success
- ASSERT_EQ(0, bthread_setconcurrency(conn + add_conn)); // set max success
- ASSERT_EQ(conn + add_conn, bthread_getconcurrency());
- ASSERT_EQ(conn, bthread::g_task_control->concurrency());
- ASSERT_EQ(1, set_min_concurrency(conn + 1)); // set min success
- ASSERT_EQ(conn + 1, get_min_concurrency());
- ASSERT_EQ(conn + 1, bthread::g_task_control->concurrency());
- std::vector<bthread_t> tids;
- for (int i = 0; i < conn; ++i) {
- bthread_t tid;
- bthread_start_background(&tid, &BTHREAD_ATTR_SMALL, sleep_proc, NULL);
- tids.push_back(tid);
- }
- for (int i = 0; i < add_conn; ++i) {
- bthread_t tid;
- bthread_start_background(&tid, &BTHREAD_ATTR_SMALL, add_concurrency_proc, NULL);
- tids.push_back(tid);
- }
- for (size_t i = 0; i < tids.size(); ++i) {
- bthread_join(tids[i], NULL);
- }
- ASSERT_EQ(conn + add_conn, bthread_getconcurrency());
- ASSERT_EQ(conn + add_conn, bthread::g_task_control->concurrency());
- }
- } // namespace
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