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authorChris Johns <chrisj@rtems.org>2020-10-08 19:14:14 +1100
committerChris Johns <chrisj@rtems.org>2020-10-09 16:45:24 +1100
commit558a19d3adff6a3ecf678f94408b48beccbbc9fb (patch)
treefef8034435563b1238211e1ffd18363eb7808575 /testsuites/libtests/rcxx01/user-example-3.cpp
parentlibrtemscxx: Fix white space to match the coding standard (diff)
downloadrtems-558a19d3adff6a3ecf678f94408b48beccbbc9fb.tar.bz2
testsuite/rcxx01: Add examples for use in the User manual
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diff --git a/testsuites/libtests/rcxx01/user-example-3.cpp b/testsuites/libtests/rcxx01/user-example-3.cpp
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+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/*
+ * Copyright (C) 2020 Chris Johns (http://contemporary.software)
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. 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.
+ *
+ * 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 <atomic>
+#include <chrono>
+#include <iostream>
+#include <mutex>
+
+#include <rtems/thread.hpp>
+
+class ticker
+{
+ public:
+ ticker();
+
+ void start(const size_t life_time);
+ bool finished();
+
+ size_t seconds();
+
+ private:
+ void timer(const size_t life_time);
+
+ rtems::thread::thread tocker;
+ std::mutex lock;
+ std::atomic<bool> done;
+ bool running;
+ std::atomic<size_t> the_seconds;
+};
+
+ticker::ticker()
+ : done(false),
+ running(false),
+ the_seconds(0)
+{
+}
+
+void ticker::start(const size_t life_time)
+{
+ std::lock_guard<std::mutex> guard(lock);
+ if (!running) {
+ rtems::thread::attributes attr;
+ attr.set_name("CLCK");
+ attr.set_stack_size(8 * 1024);
+ attr.set_priority(10);
+ running = true;
+ tocker = rtems::thread::thread(attr, &ticker::timer, this, life_time);
+ }
+}
+
+bool ticker::finished()
+{
+ return done.load();
+}
+
+size_t ticker::seconds()
+{
+ return the_seconds.load();
+}
+
+void ticker::timer(const size_t life_time)
+{
+ while (the_seconds.load() < life_time) {
+ std::this_thread::sleep_for(std::chrono::seconds(1));
+ the_seconds++;
+ }
+ done = true;
+ std::lock_guard<std::mutex> guard(lock);
+ running = false;
+}
+
+void example_3()
+{
+ std::cout << "Start example 3" << std::endl;
+
+ ticker my_ticker;
+
+ my_ticker.start(5);
+
+ while (!my_ticker.finished()) {
+ std::this_thread::sleep_for(std::chrono::seconds(2));
+ std::cout << "Ticker is " << my_ticker.seconds() << std::endl;
+ }
+
+ std::cout << "End example 3" << std::endl;
+}