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- /* Copyright (C) 2011 John Maddock
- *
- * Use, modification and distribution is subject to the
- * Boost Software License, Version 1.0. (See accompanying
- * file LICENSE_1_0.txt or http://www.boost.org/LICENSE_1_0.txt)
- */
- // Test of bug #1252 (https://svn.boost.org/trac/boost/ticket/1252)
- #include <boost/pool/pool.hpp>
- #include <boost/detail/lightweight_test.hpp>
- #include <boost/type_traits/alignment_of.hpp>
- #include <cstring>
- struct limited_allocator_new_delete
- {
- typedef std::size_t size_type;
- typedef std::ptrdiff_t difference_type;
- static char * malloc BOOST_PREVENT_MACRO_SUBSTITUTION(const size_type bytes)
- {
- if(bytes > 1510 * 32)
- return 0;
- return new (std::nothrow) char[bytes];
- }
- static void free BOOST_PREVENT_MACRO_SUBSTITUTION(char * const block)
- {
- delete [] block;
- }
- };
- template <class T>
- void test_alignment(T)
- {
- unsigned align = boost::alignment_of<T>::value;
- boost::pool<> p(sizeof(T));
- unsigned limit = 100000;
- for(unsigned i = 0; i < limit; ++i)
- {
- void* ptr = (p.malloc)();
- BOOST_TEST(reinterpret_cast<std::size_t>(ptr) % align == 0);
- // Trample over the memory just to be sure the allocated block is big enough,
- // if it's not, we'll trample over the next block as well (and our internal housekeeping).
- std::memset(ptr, 0xff, sizeof(T));
- }
- }
- int main()
- {
- boost::pool<limited_allocator_new_delete> po(1501);
- void* p = (po.malloc)();
- BOOST_TEST(p != 0);
- test_alignment(char(0));
- test_alignment(short(0));
- test_alignment(int(0));
- test_alignment(long(0));
- test_alignment(double(0));
- test_alignment(float(0));
- test_alignment((long double)(0));
- #ifndef BOOST_NO_LONG_LONG
- test_alignment((long long)(0));
- #endif
- return boost::report_errors();
- }
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