Adding gem5 source to svn.
git-svn-id: https://www4.informatik.uni-erlangen.de/i4svn/danceos/trunk/devel/fail@1819 8c4709b5-6ec9-48aa-a5cd-a96041d1645a
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friemel
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simulators/gem5/src/unittest/refcnttest.cc
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194
simulators/gem5/src/unittest/refcnttest.cc
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/*
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* Copyright (c) 2010 The Regents of The University of Michigan
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met: redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer;
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* redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution;
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* neither the name of the copyright holders nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* Authors: Gabe Black
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*/
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#include <cassert>
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#include <iostream>
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#include <list>
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#include "base/cprintf.hh"
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#include "base/refcnt.hh"
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#include "unittest/unittest.hh"
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using namespace std;
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using UnitTest::setCase;
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namespace {
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bool printNewDel = false;
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class TestRC;
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typedef list<TestRC *> LiveList;
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LiveList liveList;
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int
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live()
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{
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return liveList.size();
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}
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int
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liveChange()
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{
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static int oldLive = 0;
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int newLive = live();
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int diff = newLive - oldLive;
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oldLive = newLive;
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return diff;
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}
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class TestRC : public RefCounted
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{
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protected:
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const char *_tag;
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LiveList::iterator liveIt;
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public:
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TestRC(const char *newTag) : _tag(newTag)
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{
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if (printNewDel)
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cprintf(" Creating object \"%s\"\n", _tag);
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liveList.push_front(this);
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liveIt = liveList.begin();
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}
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~TestRC()
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{
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if (printNewDel)
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cprintf(" Destroying object \"%s\"\n", _tag);
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liveList.erase(liveIt);
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}
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const char *
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tag()
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{
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return _tag;
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}
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int testVal;
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};
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typedef RefCountingPtr<TestRC> Ptr;
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} // anonymous namespace
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int
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main()
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{
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assert(live() == 0);
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assert(liveChange() == 0);
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// Create an empty Ptr and verify it's data pointer is NULL.
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setCase("NULL check");
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Ptr nullCheck;
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EXPECT_EQ(nullCheck.get(), NULL);
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EXPECT_EQ(liveChange(), 0);
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// Construct a Ptr from a TestRC pointer.
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setCase("construction from pointer");
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Ptr constFromPointer = new TestRC("construction from pointer");
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EXPECT_EQ(liveChange(), 1);
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// Construct a Ptr from an existing Ptr.
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setCase("construction from a Ptr");
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Ptr constFromPtr = constFromPointer;
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EXPECT_EQ(liveChange(), 0);
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// Test a Ptr being destroyed.
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setCase("destroying a Ptr");
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Ptr *ptrPtr = new Ptr(new TestRC("destroying a ptr"));
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EXPECT_EQ(liveChange(), 1);
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delete ptrPtr;
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EXPECT_EQ(liveChange(), -1);
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// Test assignment from a pointer and from a Ptr.
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setCase("assignment operators");
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Ptr assignmentTarget;
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TestRC *assignmentSourcePointer = new TestRC("assignment source 1");
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EXPECT_EQ(liveChange(), 1);
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assignmentTarget = assignmentSourcePointer;
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EXPECT_EQ(liveChange(), 0);
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assignmentTarget = NULL;
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EXPECT_EQ(liveChange(), -1);
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Ptr assignmentSourcePtr(new TestRC("assignment source 2"));
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EXPECT_EQ(liveChange(), 1);
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assignmentTarget = assignmentSourcePtr;
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EXPECT_EQ(liveChange(), 0);
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assignmentSourcePtr = NULL;
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EXPECT_EQ(liveChange(), 0);
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assignmentTarget = NULL;
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EXPECT_EQ(liveChange(), -1);
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// Test access to members of the pointed to class and dereferencing.
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setCase("access to members");
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TestRC *accessTest = new TestRC("access test");
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Ptr accessTestPtr = accessTest;
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accessTest->testVal = 1;
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EXPECT_EQ(accessTestPtr->testVal, 1);
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EXPECT_EQ((*accessTestPtr).testVal, 1);
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accessTest->testVal = 2;
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EXPECT_EQ(accessTestPtr->testVal, 2);
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EXPECT_EQ((*accessTestPtr).testVal, 2);
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accessTestPtr->testVal = 3;
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EXPECT_EQ(accessTest->testVal, 3);
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(*accessTestPtr).testVal = 4;
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EXPECT_EQ(accessTest->testVal, 4);
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accessTestPtr = NULL;
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accessTest = NULL;
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EXPECT_EQ(liveChange(), 0);
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// Test bool and ! operator overloads.
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setCase("conversion to bool and ! overload");
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Ptr boolTest = new TestRC("bool test");
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EXPECT_EQ(boolTest, true);
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EXPECT_EQ(!boolTest, false);
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boolTest = NULL;
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EXPECT_EQ(boolTest, false);
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EXPECT_EQ(!boolTest, true);
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EXPECT_EQ(liveChange(), 0);
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// Test the equality operators.
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setCase("equality operators");
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TestRC *equalTestA = new TestRC("equal test a");
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Ptr equalTestAPtr = equalTestA;
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Ptr equalTestAPtr2 = equalTestA;
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TestRC *equalTestB = new TestRC("equal test b");
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Ptr equalTestBPtr = equalTestB;
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EXPECT_TRUE(equalTestA == equalTestAPtr);
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EXPECT_TRUE(equalTestAPtr == equalTestA);
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EXPECT_TRUE(equalTestAPtr == equalTestAPtr2);
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EXPECT_TRUE(equalTestA != equalTestBPtr);
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EXPECT_TRUE(equalTestAPtr != equalTestB);
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EXPECT_TRUE(equalTestAPtr != equalTestBPtr);
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return UnitTest::printResults();
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}
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