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// Boost.Function library
// Copyright Douglas Gregor 2001-2003. Use, modification and
// distribution is subject to the Boost Software License, Version
// 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
// For more information, see http://www.boost.org
#include <boost/test/minimal.hpp>
#include <cassert>
#include <functional>
#include <boost/function.hpp>
using namespace std;
using namespace boost;
static int alloc_count = 0;
static int dealloc_count = 0;
template<typename T>
struct counting_allocator : public std::allocator<T>
{
template<typename U>
struct rebind
{
typedef counting_allocator<U> other;
};
T* allocate(std::size_t n)
{
alloc_count++;
return std::allocator<T>::allocate(n);
}
void deallocate(T* p, std::size_t n)
{
dealloc_count++;
std::allocator<T>::deallocate(p, n);
}
};
struct plus_int
{
int operator()(int x, int y) const { return x + y; }
int unused_state_data[32];
};
static int do_minus(int x, int y) { return x-y; }
struct DoNothing
{
void operator()() const {}
int unused_state_data[32];
};
static void do_nothing() {}
int
test_main(int, char*[])
{
function2<int, int, int, counting_allocator<int> > f;
f = plus_int();
f.clear();
BOOST_CHECK(alloc_count == 1);
BOOST_CHECK(dealloc_count == 1);
alloc_count = 0;
dealloc_count = 0;
f = &do_minus;
f.clear();
BOOST_CHECK(alloc_count == 0);
BOOST_CHECK(dealloc_count == 0);
function0<void, counting_allocator<int> > fv;
alloc_count = 0;
dealloc_count = 0;
fv = DoNothing();
fv.clear();
BOOST_CHECK(alloc_count == 1);
BOOST_CHECK(dealloc_count == 1);
alloc_count = 0;
dealloc_count = 0;
fv = &do_nothing;
fv.clear();
BOOST_CHECK(alloc_count == 0);
BOOST_CHECK(dealloc_count == 0);
return 0;
}
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