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authorBent Bisballe Nyeng <deva@aasimon.org>2016-04-16 13:33:53 +0200
committerBent Bisballe Nyeng <deva@aasimon.org>2016-04-16 13:33:53 +0200
commit4eb252df04ab237c8638d45bcbf028859dc6a110 (patch)
tree8bffddf62b4271336a6e0121fef8133327654000 /test/atomictest.cc
parentef68248bf70a027595803b08433a7a2c74e20fd0 (diff)
parent35e804b984c28131fe13d229c5a0867762c6e8cf (diff)
Merge branch 'settings'
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/***************************************************************************
+ * atomic.cc
+ *
+ * Wed Mar 23 09:17:12 CET 2016
+ * Copyright 2016 Christian Glöckner
+ * cgloeckner@freenet.de
+ ****************************************************************************/
+
+/*
+ * This file is part of DrumGizmo.
+ *
+ * DrumGizmo is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * DrumGizmo is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with DrumGizmo; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+ */
+#include <cppunit/extensions/HelperMacros.h>
+
+#include <atomic.h>
+
+class AtomicTest
+ : public CppUnit::TestFixture {
+
+ CPPUNIT_TEST_SUITE(AtomicTest);
+ CPPUNIT_TEST(podAtomicsUseStandardImpl);
+ CPPUNIT_TEST(nonPodAtomicsUseOwnImpl);
+ CPPUNIT_TEST(podAtomicCanBeDefaultInitialized);
+ CPPUNIT_TEST(nonPodAtomicCanBeDefaultInitialized);
+ CPPUNIT_TEST(podAtomicCanBeValueInitialized);
+ CPPUNIT_TEST(nonPodAtomicCanBeValueInitialized);
+ CPPUNIT_TEST(podAtomicCanBeValueAssigned);
+ CPPUNIT_TEST(nonPodAtomicCanBeValueAssigned);
+ CPPUNIT_TEST(podAtomicsAreLockFree);
+ CPPUNIT_TEST_SUITE_END();
+
+ public:
+ void setUp() {}
+ void tearDown() {}
+
+ void podAtomicsUseStandardImpl() {
+ CPPUNIT_ASSERT(isUsingStandardImpl<bool>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<unsigned short int>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<short int>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<unsigned int>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<int>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<unsigned long int>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<long int>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<unsigned long long int>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<long long int>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<float>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<double>());
+ CPPUNIT_ASSERT(isUsingStandardImpl<long double>());
+ }
+
+ void nonPodAtomicsUseOwnImpl() {
+ CPPUNIT_ASSERT(!isUsingStandardImpl<std::string>());
+ }
+
+ void podAtomicCanBeDefaultInitialized() {
+ Atomic<int> i;
+ // note: i is initialized with garbage
+ }
+
+ void nonPodAtomicCanBeDefaultInitialized() {
+ Atomic<std::string> s;
+ CPPUNIT_ASSERT_EQUAL(s.load(), std::string{});
+ }
+
+ void podAtomicCanBeValueInitialized() {
+ Atomic<int> i{5};
+ CPPUNIT_ASSERT_EQUAL(i.load(), 5);
+ }
+
+ void nonPodAtomicCanBeValueInitialized() {
+ Atomic<std::string> s{"hello world"};
+ CPPUNIT_ASSERT_EQUAL(s.load(), std::string{"hello world"});
+ }
+
+ void podAtomicCanBeValueAssigned() {
+ Atomic<int> i;
+ i = 5;
+ CPPUNIT_ASSERT_EQUAL(i.load(), 5);
+ }
+
+ void nonPodAtomicCanBeValueAssigned() {
+ Atomic<std::string> s;
+ s = "hello world";
+ CPPUNIT_ASSERT_EQUAL(s.load(), std::string{"hello world"});
+ }
+
+ void podAtomicsAreLockFree() {
+ CPPUNIT_ASSERT(isLockFree<bool>());
+ CPPUNIT_ASSERT(isLockFree<unsigned short int>());
+ CPPUNIT_ASSERT(isLockFree<short int>());
+ CPPUNIT_ASSERT(isLockFree<unsigned int>());
+ CPPUNIT_ASSERT(isLockFree<int>());
+ CPPUNIT_ASSERT(isLockFree<unsigned long int>());
+ CPPUNIT_ASSERT(isLockFree<long int>());
+ CPPUNIT_ASSERT(isLockFree<unsigned long long int>());
+ CPPUNIT_ASSERT(isLockFree<long long int>());
+ CPPUNIT_ASSERT(isLockFree<float>());
+ CPPUNIT_ASSERT(isLockFree<double>());
+
+ // compile error: undefined reference to `__atomic_is_lock_free'
+ //CPPUNIT_ASSERT(isLockFree<long double>());
+ }
+
+ // todo: further testing
+
+ private:
+ template <typename T>
+ bool isUsingStandardImpl() {
+ return std::is_base_of<std::atomic<T>, Atomic<T>>::value;
+ }
+
+ template <typename T>
+ bool isLockFree() {
+ Atomic<T> a;
+ return a.is_lock_free();
+ }
+};
+
+// Registers the fixture into the 'registry'
+CPPUNIT_TEST_SUITE_REGISTRATION(AtomicTest);
+