Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / performance / 21_strings / string_append.cc

diff --git a/libstdc++-v3/testsuite/performance/21_strings/string_append.cc b/libstdc++-v3/testsuite/performance/21_strings/string_append.cc
new file mode 100644 (file)
index 0000000..60a9a86
--- /dev/null
+++ b/libstdc++-v3/testsuite/performance/21_strings/string_append.cc
@@ -0,0 +1,77 @@
+ // Copyright (C) 2003, 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/>.
+
+
+#include <ctime>
+#include <iostream>
+#include <string>
+#include <testsuite_performance.h>
+
+using namespace std;
+
+void
+test_append_char(int how_much)
+{
+  string buf; // no preallocation
+  for (int i = 0; i < how_much; ++i)
+    buf.append(static_cast<string::size_type>(1) , 'x');
+}
+
+void
+test_append_string(int how_much)
+{
+  string s(static_cast<string::size_type>(1) , 'x');
+  string buf; // no preallocation
+  for (int i = 0; i < how_much; ++i)
+    buf.append(s);
+}
+
+void 
+run_benchmark1(int how_much)
+{
+  using namespace __gnu_test;
+  time_counter time;
+  resource_counter resource;
+  start_counters(time, resource);
+  test_append_char(how_much);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "char", time, resource);
+}
+
+void 
+run_benchmark2(int how_much)
+{
+  using namespace __gnu_test;
+  time_counter time;
+  resource_counter resource;
+  start_counters(time, resource);
+  test_append_string(how_much);
+  stop_counters(time, resource);
+  report_performance(__FILE__, "string", time, resource);
+}
+
+// libstdc++/5380
+// libstdc++/4960
+int main()
+{
+  run_benchmark1(100000);
+  run_benchmark2(100000);
+  run_benchmark1(1000000);
+  run_benchmark2(1000000);
+  run_benchmark1(10000000);
+  run_benchmark2(10000000);
+}