Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / util / performance / assoc / mem_usage / erase_test.hpp

diff --git a/libstdc++-v3/testsuite/util/performance/assoc/mem_usage/erase_test.hpp b/libstdc++-v3/testsuite/util/performance/assoc/mem_usage/erase_test.hpp
new file mode 100644 (file)
index 0000000..6ad797a
--- /dev/null
+++ b/libstdc++-v3/testsuite/util/performance/assoc/mem_usage/erase_test.hpp
@@ -0,0 +1,109 @@
+// -*- C++ -*-
+
+// Copyright (C) 2005, 2006, 2009 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 erase_test.hpp
+ * Contains a generic erase test.
+ */
+
+#ifndef PB_DS_ERASE_TEST_HPP
+#define PB_DS_ERASE_TEST_HPP
+
+#include <iterator>
+#include <testsuite_allocator.h>
+#include <ext/pb_ds/detail/type_utils.hpp>
+#include <performance/io/xml_formatter.hpp>
+#include <common_type/assoc/string_form.hpp>
+
+namespace __gnu_pbds
+{
+  namespace test
+  {
+    template<typename It>
+    class erase_test
+    {
+    public:
+      erase_test(It ins_b, size_t ins_vn, size_t ins_vs, size_t ins_vm)
+      :        m_ins_b(ins_b), m_ins_vn(ins_vn), m_ins_vs(ins_vs), m_ins_vm(ins_vm)
+      { }
+
+      template<typename Cntnr>
+        void
+        operator()(Cntnr);
+
+    private:
+      erase_test(const erase_test&);
+
+      const It                 m_ins_b;
+      const size_t     m_ins_vn;
+      const size_t     m_ins_vs;
+      const size_t     m_ins_vm;
+    };
+
+    template<typename It>
+    template<typename Cntnr>
+    void
+    erase_test<It>::
+    operator()(Cntnr)
+    {
+      typedef string_form<Cntnr> sform_type;
+      typedef xml_result_set_performance_formatter formatter_type;
+      formatter_type res_set_fmt(sform_type::name(), sform_type::desc());
+
+      for (size_t i = 0; m_ins_vn + i * m_ins_vs < m_ins_vm; ++i)
+       {
+         const size_t ins_size = m_ins_vn + i * m_ins_vs;
+
+         It ins_it_b = m_ins_b;
+         It ins_it_e = m_ins_b;
+         std::advance(ins_it_e, ins_size);
+
+         typedef __gnu_test::tracker_allocator_counter counter_type;
+         __gnu_test::tracker_allocator<char> alloc;
+         const size_t init_mem = counter_type::get_allocation_count() 
+                                 - counter_type::get_deallocation_count();
+         Cntnr cntnr(ins_it_b, ins_it_e);
+
+         while (cntnr.size() > 1)
+            cntnr.erase(*cntnr.begin());
+
+         const size_t final_mem = counter_type::get_allocation_count() 
+                                - counter_type::get_deallocation_count();
+         assert(final_mem > init_mem);
+         const size_t delta_mem = final_mem - init_mem;
+         res_set_fmt.add_res(ins_size, static_cast<double>(delta_mem));
+       }
+    }
+  } // namespace test
+} // namespace __gnu_pbds
+
+#endif
+