- if (dbg_hit_cnt0)
- cerr << "Total " << dbg_hit_cnt0 << " Hit " << dbg_hit_cnt1
- << " hit rate (%) " << 100 * dbg_hit_cnt1 / dbg_hit_cnt0 << endl;
-}
+/// Our fancy logging facility. The trick here is to replace cout.rdbuf() with
+/// this one that sends the output both to console and to a file, this allow us
+/// to toggle the logging of std::cout to a file while preserving output to
+/// stdout and without changing a single line of code! Idea and code from:
+/// http://groups.google.com/group/comp.lang.c++/msg/1d941c0f26ea0d81
+
+class Logger: public streambuf {
+public:
+ typedef char_traits<char> traits_type;
+ typedef traits_type::int_type int_type;
+
+ Logger() : cout_buf(cout.rdbuf()) {}
+ ~Logger() { set(false); }
+
+ void set(bool b) {
+
+ if (b && !file.is_open())
+ {
+ file.open("out.txt", ifstream::out | ifstream::app);
+ cout.rdbuf(this);
+ }
+ else if (!b && file.is_open())
+ {
+ cout.rdbuf(cout_buf);
+ file.close();
+ }
+ }