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Rewrite time measurement code

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Introduce and use a new Time class designed after
QTime, from Qt framework. Should be a more clear and
self documented code.

As an added benefit we now use 64 bits internally to get
millisecs from system time. This avoids to wrap around
to 0 every 2^32 milliseconds, which is 49.71 days.

No functional change.

Signed-off-by: Marco Costalba <mcostalba@gmail.com>
This commit is contained in:
Marco Costalba
2012-03-03 09:35:56 +01:00
parent b966adf103
commit 161c6b025e
7 changed files with 56 additions and 63 deletions
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26
src/misc.cpp
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@@ -19,15 +19,11 @@
#if defined(_WIN32) || defined(_WIN64)
#define _CRT_SECURE_NO_DEPRECATE
#define NOMINMAX // disable macros min() and max()
#include <windows.h>
#include <sys/timeb.h>
#else
# include <sys/time.h>
# include <sys/types.h>
# include <unistd.h>
# if defined(__hpux)
# include <sys/pstat.h>
@@ -77,12 +73,12 @@ const string engine_info(bool to_uci) {
s << "Stockfish " << Tag
<< setfill('0') << " " << year.substr(2)
<< setw(2) << (1 + months.find(month) / 4)
<< setw(2) << day << cpu64 << popcnt;
<< setw(2) << day;
}
else
s << "Stockfish " << Version << cpu64 << popcnt;
s << "Stockfish " << Version;
s << (to_uci ? "\nid author ": " by ")
s << cpu64 << popcnt << (to_uci ? "\nid author ": " by ")
<< "Tord Romstad, Marco Costalba and Joona Kiiski";
return s.str();
@@ -109,22 +105,6 @@ void dbg_print() {
}
/// system_time() returns the current system time, measured in milliseconds
int system_time() {
#if defined(_WIN32) || defined(_WIN64)
struct _timeb t;
_ftime(&t);
return int(t.time * 1000 + t.millitm);
#else
struct timeval t;
gettimeofday(&t, NULL);
return t.tv_sec * 1000 + t.tv_usec / 1000;
#endif
}
/// cpu_count() tries to detect the number of CPU cores
int cpu_count() {