Imported gcc-4.4.3

[msp430-gcc.git] / libstdc++-v3 / testsuite / performance / 25_algorithms / copy_streambuf_iterators.cc

diff --git a/libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc b/libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc
new file mode 100644 (file)
index 0000000..6f22f69
--- /dev/null
+++ b/libstdc++-v3/testsuite/performance/25_algorithms/copy_streambuf_iterators.cc
@@ -0,0 +1,98 @@
+// Copyright (C) 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/>.
+
+
+#include <iterator>
+#include <sstream>
+#include <algorithm>
+#include <testsuite_performance.h>
+
+// libstdc++/25482
+int main()
+{
+  using namespace std;
+  using namespace __gnu_test;
+
+  typedef istreambuf_iterator<char> in_iterator_type;
+  typedef ostreambuf_iterator<char> out_iterator_type;
+
+  time_counter time;
+  resource_counter resource;
+
+  const char data[] = "Contrappunto dialettico alla mente";
+
+  // istreambuf iterators -> ostreambuf iterator
+  {
+    istringstream iss(data);
+    in_iterator_type beg(iss);
+    in_iterator_type end;
+    
+    ostringstream oss;
+    out_iterator_type out(oss);
+
+    start_counters(time, resource);
+    for (unsigned i = 0; i < 10000000; ++i)
+      {
+       copy(beg, end, out);
+       iss.seekg(0);
+       oss.seekp(0);
+      }
+    stop_counters(time, resource);
+    report_performance(__FILE__, "isb iters -> osb iter", time, resource);
+    clear_counters(time, resource);
+  }
+
+  // char array -> ostreambuf iterator
+  {
+    const char* beg = data;
+    const char* end = data + sizeof(data) - 1;
+
+    ostringstream oss;
+    out_iterator_type out(oss);
+
+    start_counters(time, resource);
+    for (unsigned i = 0; i < 10000000; ++i)
+      {
+       copy(beg, end, out);
+       oss.seekp(0);
+      }
+    stop_counters(time, resource);
+    report_performance(__FILE__, "pointers  -> osb iter", time, resource);
+    clear_counters(time, resource);
+  }
+
+  // istreambuf iterators -> char array
+  {
+    istringstream iss(data);
+    in_iterator_type beg(iss);
+    in_iterator_type end;
+
+    char out[sizeof(data)];
+
+    start_counters(time, resource);
+    for (unsigned i = 0; i < 10000000; ++i)
+      {
+       copy(beg, end, out);
+       iss.seekg(0);
+      }
+    stop_counters(time, resource);
+    report_performance(__FILE__, "isb iters -> pointer", time, resource);
+    clear_counters(time, resource);
+  }
+
+  return 0;
+}