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// file : tests/shared-ptr/driver.cxx
// copyright : Copyright (c) 2009-2013 Code Synthesis Tools CC
// license : MIT; see accompanying LICENSE file
#include <string>
#include <cassert>
#include <cutl/shared-ptr.hxx>
using namespace cutl;
struct type
{
type (int x, char const* y) : x_ (x), y_ (y) {}
int x_;
std::string y_;
};
struct base1
{
virtual
~base1 () {}
base1 (int x) : x_ (x) {}
int x_;
};
struct base2
{
virtual
~base2 () {}
base2 (char const* y) : y_ (y) {}
std::string y_;
};
struct derived: base1, base2
{
derived (int x, char const* y) : base1 (x), base2 (y) {}
};
struct shared_type: shared_base
{
shared_type (int x, char const* y)
: x_ (x), y_ (y)
{
assert (ref_count (this) == 1);
}
int x_;
std::string y_;
};
int
main ()
{
//
// inc_ref, dec_ref, ref_count
//
// Non-polymorphic type.
//
{
type* x (new (shared) type (5, "foo"));
assert (ref_count (x) == 1);
inc_ref (x);
assert (ref_count (x) == 2);
dec_ref (x);
assert (ref_count (x) == 1);
dec_ref (x);
}
// Polymorphic type.
//
{
base2* x (new (shared) derived (5, "foo"));
assert (ref_count (x) == 1);
inc_ref (x);
assert (ref_count (x) == 2);
dec_ref (x);
assert (ref_count (x) == 1);
dec_ref (x);
}
// Shared type.
//
{
shared_type* x (new (shared) shared_type (5, "foo"));
assert (ref_count (x) == 1);
inc_ref (x);
assert (ref_count (x) == 2);
dec_ref (x);
assert (ref_count (x) == 1);
dec_ref (x);
}
// Error handling (this theoretically can segfault).
//
{
type* x (new type (5, "foo"));
try
{
inc_ref (x);
assert (false);
}
catch (not_shared const&)
{
}
delete x;
}
//
// shared_ptr
//
// Non-polymorphic type.
//
{
shared_ptr<type> x (new (shared) type (5, "foo"));
assert (x.count () == 1);
assert (x);
assert (x->x_ == 5);
assert ((*x).y_ == "foo");
{
shared_ptr<type> y (x);
assert (y.count () == 2);
}
{
shared_ptr<type> y;
y = x;
assert (y.count () == 2);
}
assert (x.count () == 1);
shared_ptr<type> y (x.release ());
assert (y.count () == 1);
}
// Polymorphic type.
//
{
shared_ptr<derived> x (new (shared) derived (5, "foo"));
assert (x.count () == 1);
{
shared_ptr<base2> y (x);
assert (y.count () == 2);
assert (y->y_ == "foo");
}
{
shared_ptr<base2> y;
y = x;
assert (y.count () == 2);
}
assert (x.count () == 1);
}
// Non-polymorphic type.
//
{
shared_ptr<shared_type> x (new (shared) shared_type (5, "foo"));
assert (x.count () == 1);
assert (x);
assert (x->x_ == 5);
assert ((*x).y_ == "foo");
assert (x->_ref_count () == 1);
x->_inc_ref ();
assert (x.count () == 2);
x->_dec_ref ();
assert (x.count () == 1);
{
shared_ptr<shared_type> y (x);
assert (y.count () == 2);
}
{
shared_ptr<shared_type> y;
y = x;
assert (y.count () == 2);
}
assert (x.count () == 1);
shared_ptr<shared_type> y (x.release ());
assert (y.count () == 1);
}
}
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