libtests/rcxx01/user-example-2.cpp

0001 /* SPDX-License-Identifier: BSD-2-Clause */
0002
0003 /*
0004  * Copyright (C) 2020 Chris Johns (http://contemporary.software)
0005  *
0006  * Redistribution and use in source and binary forms, with or without
0007  * modification, are permitted provided that the following conditions
0008  * are met:
0009  * 1. Redistributions of source code must retain the above copyright
0010  *    notice, this list of conditions and the following disclaimer.
0011  * 2. Redistributions in binary form must reproduce the above copyright
0012  *    notice, this list of conditions and the following disclaimer in the
0013  *    documentation and/or other materials provided with the distribution.
0014  *
0015  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
0016  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
0017  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
0018  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
0019  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
0020  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
0021  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
0022  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
0023  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
0024  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
0025  * POSSIBILITY OF SUCH DAMAGE.
0026  */
0027
0028 #include <chrono>
0029 #include <iostream>
0030
0031 #include <rtems/thread.hpp>
0032
0033 static void wait_for(std::string me, size_t seconds, size_t announce)
0034 {
0035   size_t count = 0;
0036   while (count < seconds) {
0037     std::this_thread::sleep_for(std::chrono::seconds(1));
0038     if ((count % announce) == 0)
0039       std::cout << me << ": " << count << std::endl;
0040     count++;
0041   }
0042 }
0043
0044 void example_2()
0045 {
0046   std::cout << "Start example 2" << std::endl;
0047
0048   rtems::thread::attributes attr;
0049   attr.set_stack_size(16 * 1024);
0050
0051   attr.set_priority(100);
0052   attr.set_name("T1");
0053   rtems::thread::thread t1(attr, wait_for, "T1", 10, 1);
0054
0055   attr.set_priority(101);
0056   attr.set_name("T2");
0057   rtems::thread::thread t2(attr, wait_for, "T2", 10, 2);
0058
0059   attr.set_priority(attr.get_priority());
0060   attr.set_name("T3");
0061   rtems::thread::thread t3(attr, wait_for, "T3", 15, 3);
0062
0063   t1.join();
0064   t2.join();
0065   t3.join();
0066
0067   std::cout << "End example 2" << std::endl;
0068 }