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279 lines
7.9 KiB
279 lines
7.9 KiB
/* Copyright (c) 2013, 2017, Oracle and/or its affiliates. All rights reserved.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License, version 2.0, for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */
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/**
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This is unit test for the Global_THD_manager class.
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*/
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#include "my_config.h"
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#include <gtest/gtest.h>
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#include <stddef.h>
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#include <sys/types.h>
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#include "my_inttypes.h"
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#include "sql/mysqld.h"
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#include "sql/mysqld_thd_manager.h" // Global_THD_manager
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#include "sql/sql_class.h"
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#include "unittest/gunit/thread_utils.h"
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using thread::Notification;
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using thread::Thread;
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namespace thd_manager_unittest {
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class ThreadManagerTest : public ::testing::Test {
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protected:
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ThreadManagerTest() {}
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void SetUp() {
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Global_THD_manager::create_instance();
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thd_manager = Global_THD_manager::get_instance();
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thd_manager->set_unit_test();
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}
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void TearDown() {}
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Global_THD_manager *thd_manager;
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private:
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GTEST_DISALLOW_COPY_AND_ASSIGN_(ThreadManagerTest);
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};
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enum TEST_TYPE { TEST_WAIT = 0, TEST_TIMED_WAIT = 1 };
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/*
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Verify add_thd(), remove_thd() methods
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*/
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TEST_F(ThreadManagerTest, AddRemoveTHDWithGuard) {
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THD thd1(false), thd2(false);
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thd1.server_id = 1;
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thd1.set_new_thread_id();
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thd2.server_id = 2;
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thd2.set_new_thread_id();
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EXPECT_EQ(0U, thd_manager->get_thd_count());
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thd_manager->add_thd(&thd1);
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EXPECT_EQ(1U, thd_manager->get_thd_count());
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thd_manager->add_thd(&thd2);
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thd_manager->remove_thd(&thd1);
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EXPECT_EQ(1U, thd_manager->get_thd_count());
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thd_manager->remove_thd(&thd2);
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EXPECT_EQ(0U, thd_manager->get_thd_count());
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}
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TEST_F(ThreadManagerTest, IncDecThreadRunning) {
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EXPECT_EQ(0, thd_manager->get_num_thread_running());
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thd_manager->inc_thread_running();
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EXPECT_EQ(1, thd_manager->get_num_thread_running());
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thd_manager->dec_thread_running();
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EXPECT_EQ(0, thd_manager->get_num_thread_running());
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}
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TEST_F(ThreadManagerTest, IncThreadCreated) {
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EXPECT_EQ(0U, thd_manager->get_num_thread_created());
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thd_manager->inc_thread_created();
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EXPECT_EQ(1U, thd_manager->get_num_thread_created());
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}
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/*
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Test function to validate do_for_all_thd, do_for_all_thd_copy.
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It emulates counter function to count number of thds in thd list.
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*/
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class TestFunc1 : public Do_THD_Impl {
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private:
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int cnt;
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public:
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TestFunc1() : cnt(0) {}
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int get_count() { return cnt; }
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void reset_count() { cnt = 0; }
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void operator()(THD *) { cnt = cnt + 1; }
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};
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TEST_F(ThreadManagerTest, TestTHDCopyDoFunc) {
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THD thd1(false), thd2(false);
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thd1.server_id = 1;
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thd1.set_new_thread_id();
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thd2.server_id = 2;
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thd2.set_new_thread_id();
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// Add two THD into thd list.
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thd_manager->add_thd(&thd1);
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thd_manager->add_thd(&thd2);
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int cnt = 0;
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TestFunc1 testFunc1;
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thd_manager->do_for_all_thd_copy(&testFunc1);
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cnt = testFunc1.get_count();
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EXPECT_EQ(2, cnt);
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testFunc1.reset_count();
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thd_manager->do_for_all_thd(&testFunc1);
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cnt = testFunc1.get_count();
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EXPECT_EQ(2, cnt);
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// Cleanup - Remove added THD.
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thd_manager->remove_thd(&thd1);
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thd_manager->remove_thd(&thd2);
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}
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/*
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Test class to verify find_thd()
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*/
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class TestFunc2 : public Find_THD_Impl {
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public:
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TestFunc2() : search_value(0) {}
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bool operator()(THD *thd) {
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if (thd->server_id == search_value) {
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return true;
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}
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return false;
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}
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void set_search_value(uint val) { search_value = val; }
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private:
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uint search_value;
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};
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/*
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Test class to verify do_all_for_thd() function.
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Counts all thd whose server_id value is less than or equal to 2.
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*/
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class TestFunc3 : public Do_THD_Impl {
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public:
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TestFunc3() : count(0) {}
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void operator()(THD *thd) {
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if (thd->server_id <= 2) {
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count++;
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}
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}
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int get_count() { return count; }
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private:
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int count;
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};
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TEST_F(ThreadManagerTest, TestTHDFindFunc) {
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THD thd1(false), thd2(false);
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thd1.server_id = 1;
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thd1.set_new_thread_id();
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thd2.server_id = 2;
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thd2.set_new_thread_id();
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thd_manager->add_thd(&thd1);
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thd_manager->add_thd(&thd2);
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TestFunc2 testFunc2;
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testFunc2.set_search_value(2);
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THD *thd = thd_manager->find_thd(&testFunc2);
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/* Returns the last thd which matches. */
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EXPECT_EQ(2U, thd->server_id);
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testFunc2.set_search_value(6);
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thd = thd_manager->find_thd(&testFunc2);
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/* Find non existing thd with server_id value 6. Expected to return NULL. */
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const THD *null_thd = NULL;
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EXPECT_EQ(null_thd, thd);
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// Cleanup - Remove added THD.
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thd_manager->remove_thd(&thd1);
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thd_manager->remove_thd(&thd2);
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}
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TEST_F(ThreadManagerTest, TestTHDCountFunc) {
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THD thd1(false), thd2(false), thd3(false);
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thd1.server_id = 1;
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thd1.set_new_thread_id();
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thd2.server_id = 2;
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thd2.set_new_thread_id();
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thd3.server_id = 3;
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thd3.set_new_thread_id();
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thd_manager->add_thd(&thd1);
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thd_manager->add_thd(&thd2);
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thd_manager->add_thd(&thd3);
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TestFunc3 testFunc3;
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thd_manager->do_for_all_thd(&testFunc3);
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int ret = testFunc3.get_count();
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// testFunc3 counts for thd->server_id values, 1 and 2.
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EXPECT_EQ(2, ret);
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// Cleanup - Remove added THD.
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thd_manager->remove_thd(&thd1);
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thd_manager->remove_thd(&thd2);
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thd_manager->remove_thd(&thd3);
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}
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TEST_F(ThreadManagerTest, ThreadID) {
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// Code assumes that the size of my_thread_id is 32 bit.
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ASSERT_EQ(4U, sizeof(my_thread_id));
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// Reset the thread ID counter
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thd_manager->set_thread_id_counter(1);
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EXPECT_EQ(1U, thd_manager->get_thread_id());
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// The counter is incremented after ID is assigned.
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EXPECT_EQ(1U, thd_manager->get_new_thread_id());
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EXPECT_EQ(2U, thd_manager->get_thread_id());
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// Two increments in a row
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EXPECT_EQ(2U, thd_manager->get_new_thread_id());
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EXPECT_EQ(3U, thd_manager->get_new_thread_id());
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EXPECT_EQ(4U, thd_manager->get_thread_id());
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// Force wrap of the counter
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thd_manager->set_thread_id_counter(UINT_MAX32);
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EXPECT_EQ(UINT_MAX32, thd_manager->get_new_thread_id());
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// We should not use the value reserved for temporary THDs (0).
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// The next available value should be 4.
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EXPECT_EQ(4U, thd_manager->get_new_thread_id());
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EXPECT_EQ(5U, thd_manager->get_thread_id());
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// Release thread ID 3 and reset counter.
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thd_manager->release_thread_id(3);
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thd_manager->set_thread_id_counter(1U);
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EXPECT_EQ(3U, thd_manager->get_new_thread_id());
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// Releasing the reserved thread ID is allowed - multiple times.
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thd_manager->release_thread_id(Global_THD_manager::reserved_thread_id);
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thd_manager->release_thread_id(Global_THD_manager::reserved_thread_id);
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// Cleanup
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thd_manager->release_thread_id(1);
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thd_manager->release_thread_id(2);
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thd_manager->release_thread_id(3);
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thd_manager->release_thread_id(4);
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thd_manager->release_thread_id(UINT_MAX32);
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}
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#if !defined(DBUG_OFF)
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TEST_F(ThreadManagerTest, ThreadIDDeathTest) {
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::testing::FLAGS_gtest_death_test_style = "threadsafe";
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my_thread_id thread_id = thd_manager->get_new_thread_id();
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thd_manager->release_thread_id(thread_id);
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// Releasing the same ID twice should assert.
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EXPECT_DEATH_IF_SUPPORTED(thd_manager->release_thread_id(thread_id),
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".*Assertion .*1 == num_erased.*");
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}
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#endif
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} // namespace thd_manager_unittest
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