源码提交

libs/timer/example/auto_cpu_timer_example.cpp

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+//  auto_cpu_timer_example.cpp  ------------------------------------------------------//
+
+//  Copyright Beman Dawes 2006
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+#include <boost/timer/timer.hpp>
+#include <cmath>
+
+int main()
+{
+  boost::timer::auto_cpu_timer t;
+
+  for ( long i = 0; i < 100000000; ++i )
+    std::sqrt( 123.456L );  // burn some time
+
+  return 0;
+}

libs/timer/example/timex.cpp

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+//  timex: timed execution program  ------------------------------------------//
+
+//  Copyright Beman Dawes 2007
+
+//  Distributed under the Boost Software License, Version 1.0.
+//  See http://www.boost.org/LICENSE_1_0.txt
+
+//  See http://www.boost.org/libs/timer for documentation.
+
+#include <boost/timer/timer.hpp>
+#include <cstdlib>
+#include <string>
+#include <iostream>
+
+int main( int argc, char * argv[] )
+{
+  if ( argc == 1 )
+  {
+    std::cout << "invoke: timex [-v] command [args...]\n"
+      "  command will be executed and timings displayed\n"
+      "  -v option causes command and args to be displayed\n";
+    return 1;
+  }
+
+  std::string s;
+
+  bool verbose = false;
+  if ( argc > 1 && *argv[1] == '-' && *(argv[1]+1) == 'v' )
+  {
+    verbose = true;
+    ++argv;
+    --argc;
+  }
+
+  for ( int i = 1; i < argc; ++i )
+  {
+    if ( i > 1 ) s += ' ';
+    s += argv[i];
+  }
+
+  if ( verbose )
+    { std::cout << "command: \"" << s.c_str() << "\"\n"; }
+
+  boost::timer::auto_cpu_timer t(" %ws elapsed wall-clock time\n");
+
+  return std::system( s.c_str() );
+}