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test__intrusive_ptr.cpp
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test__intrusive_ptr.cpp
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#include <list>
#include <cstddef>
#include "test.hpp"
#include "cppa/intrusive_ptr.hpp"
#include "cppa/detail/ref_counted_impl.hpp"
using namespace cppa;
namespace {
int class0_instances = 0;
int class1_instances = 0;
}
struct class0 : cppa::detail::ref_counted_impl<size_t> {
class0() { ++class0_instances; }
virtual ~class0() { --class0_instances; }
virtual class0* create() const { return new class0; }
};
struct class1 : class0 {
class1() { ++class1_instances; }
virtual ~class1() { --class1_instances; }
virtual class1* create() const { return new class1; }
};
typedef intrusive_ptr<class0> class0_ptr;
typedef intrusive_ptr<class1> class1_ptr;
class0* get_test_rc() {
return new class0;
}
class0_ptr get_test_ptr() {
return get_test_rc();
}
size_t test__intrusive_ptr() {
// this test dosn't test thread-safety of intrusive_ptr
// however, it is thread safe since it uses atomic operations only
CPPA_TEST(test__intrusive_ptr);
{
class0_ptr p(new class0);
CPPA_CHECK_EQUAL(class0_instances, 1);
CPPA_CHECK(p->unique());
}
CPPA_CHECK_EQUAL(class0_instances, 0);
{
class0_ptr p;
p = new class0;
CPPA_CHECK_EQUAL(class0_instances, 1);
CPPA_CHECK(p->unique());
}
CPPA_CHECK_EQUAL(class0_instances, 0);
{
class0_ptr p1;
p1 = get_test_rc();
class0_ptr p2 = p1;
CPPA_CHECK_EQUAL(class0_instances, 1);
CPPA_CHECK_EQUAL(p1->unique(), false);
}
CPPA_CHECK_EQUAL(class0_instances, 0);
{
std::list<class0_ptr> pl;
pl.push_back(get_test_ptr());
pl.push_back(get_test_rc());
pl.push_back(pl.front()->create());
CPPA_CHECK(pl.front()->unique());
CPPA_CHECK_EQUAL(class0_instances, 3);
}
CPPA_CHECK_EQUAL(class0_instances, 0);
{
class0_ptr p1(new class0);
p1 = new class1;
CPPA_CHECK_EQUAL(class0_instances, 1);
CPPA_CHECK_EQUAL(class1_instances, 1);
class1_ptr p2(new class1);
p1 = p2;
CPPA_CHECK_EQUAL(class0_instances, 1);
CPPA_CHECK_EQUAL(class1_instances, 1);
CPPA_CHECK(p1 == p2);
}
CPPA_CHECK_EQUAL(class0_instances, 0);
CPPA_CHECK_EQUAL(class1_instances, 0);
return CPPA_TEST_RESULT;
}