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