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Diffstat (limited to 'libstdc++-v3/testsuite/performance/ext/pb_ds/hash_int_erase_mem.cc')
-rw-r--r-- | libstdc++-v3/testsuite/performance/ext/pb_ds/hash_int_erase_mem.cc | 118 |
1 files changed, 118 insertions, 0 deletions
diff --git a/libstdc++-v3/testsuite/performance/ext/pb_ds/hash_int_erase_mem.cc b/libstdc++-v3/testsuite/performance/ext/pb_ds/hash_int_erase_mem.cc new file mode 100644 index 00000000000..f80c77b8a2e --- /dev/null +++ b/libstdc++-v3/testsuite/performance/ext/pb_ds/hash_int_erase_mem.cc @@ -0,0 +1,118 @@ +// -*- C++ -*- + +// Copyright (C) 2005, 2006, 2009, 2011 Free Software Foundation, Inc. +// +// This file is part of the GNU ISO C++ Library. This library is free +// software; you can redistribute it and/or modify it under the terms +// of the GNU General Public License as published by the Free Software +// Foundation; either version 3, or (at your option) any later +// version. + +// This library is distributed in the hope that it will be useful, but +// WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +// General Public License for more details. + +// You should have received a copy of the GNU General Public License +// along with this library; see the file COPYING3. If not see +// <http://www.gnu.org/licenses/>. + + +// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. + +// Permission to use, copy, modify, sell, and distribute this software +// is hereby granted without fee, provided that the above copyright +// notice appears in all copies, and that both that copyright notice +// and this permission notice appear in supporting documentation. None +// of the above authors, nor IBM Haifa Research Laboratories, make any +// representation about the suitability of this software for any +// purpose. It is provided "as is" without express or implied +// warranty. + +/** + * @file hash_random_int_erase_mem_usage_test.cpp + * Contains test for erasing random integers. + */ + +#include <ext/typelist.h> +#include <testsuite_allocator.h> +#include <performance/io/xml_formatter.hpp> +#include <io/verified_cmd_line_input.hpp> +#include <testsuite_rng.h> +#include <common_type/assoc/common_type.hpp> +#include <performance/assoc/mem_usage/erase_test.hpp> +#include <iostream> +#include <vector> +#include <functional> + +struct int_hash : public std::unary_function<int, int> +{ + inline int + operator()(int i) const + { return i; } +}; + +void +usage(); + +int +main(int argc, char* a_p_argv[]) +{ + using namespace __gnu_pbds::test; + + size_t vn = 200; + size_t vs = 200; + size_t vm = 2100; + try + { + xml_test_performance_formatter fmt("Size", "Memory (bytes)"); + + typedef std::vector<int> vec_t; + vec_t a_v(vm); + twister_rand_gen g; + for (size_t i = 0; i < vm; ++i) + a_v[i] = static_cast<int>(g.get_unsigned_long()); + + vec_t::const_iterator b = a_v.begin(); + erase_test<vec_t::const_iterator> tst(b, vn, vs, vm); + typedef __gnu_test::tracker_allocator<char> alloc_t; + { + typedef hash_common_types<int, __gnu_pbds::null_type, int_hash, std::equal_to<int>, alloc_t>::performance_tl tl_t; + + tl_t tl; + __gnu_cxx::typelist::apply(tst, tl); + } + + { + typedef native_hash_set<int, 8, int_hash, std::equal_to<int>, std::less<int>, alloc_t> native_t; + + tst(native_t()); + } + } + catch (...) + { + std::cerr << "Test failed" << std::endl; + return -1; + } + return 0; +} + +void +usage() +{ + using namespace std; + cerr << "usage: hash_random_int_erase_if_test <vn> <vs> <vm>" + << endl << endl; + + cerr << "This test checks the performance of various associative containers " + "using their erase method. " << endl; + cerr << "Specifically, it does the following:" << endl; + cerr << "* Creates a vector of random integers " << endl; + cerr << "* Inserts the elements into the container" << endl; + cerr << "* Erases all the elements, except one, from the constainer" + << endl << endl; + + cerr << "vn = minimum size of the vector" << endl; + cerr << "vs = step size of the vector" << endl; + cerr << "vm = maximum size of the vector" << endl; +} |