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-rw-r--r--src/base/time.hh261
1 files changed, 200 insertions, 61 deletions
diff --git a/src/base/time.hh b/src/base/time.hh
index 565ea0aac..2c54f2675 100644
--- a/src/base/time.hh
+++ b/src/base/time.hh
@@ -29,84 +29,223 @@
* Nathan Binkert
*/
-#ifndef __SIM_TIME_HH__
-#define __SIM_TIME_HH__
+#ifndef __BASE_TIME_HH__
+#define __BASE_TIME_HH__
#include <sys/time.h>
+#include <inttypes.h>
+
+#include <cmath>
+#include <cstring>
+#include <ctime>
#include <iosfwd>
#include <string>
-struct _timeval;
-
class Time
{
protected:
- mutable _timeval *time;
+ timespec _time;
+
+ /**
+ * Internal time set function
+ */
+ void _set(bool monotonic);
public:
- explicit Time(bool set_now = false);
- Time(const timeval &val);
- Time(const Time &val);
- ~Time();
+ static const long NSEC_PER_SEC = 1000 * 1000 * 1000;
+ static const long NSEC_PER_MSEC = 1000 * 1000;
+ static const long NSEC_PER_USEC = 1000;
- void set();
- const timeval &get() const;
- void set(const timeval &val);
+ public:
+ explicit Time() { clear(); }
+ explicit Time(double sec) { operator=(sec); }
+ Time(const Time &val) : _time(val._time) { }
+ Time(uint64_t sec, uint64_t nsec) { set(sec, nsec); }
+ Time(const timeval &tv) { operator=(tv); }
+ Time(const timespec &ts) { operator=(ts); }
- double operator()() const;
- std::string date(std::string format = "") const;
+ /**
+ * Accessors for getting and setting the current clock
+ */
+ time_t sec() const { return _time.tv_sec; }
+ long msec() const { return _time.tv_nsec / NSEC_PER_MSEC; }
+ long usec() const { return _time.tv_nsec / NSEC_PER_USEC; }
+ long nsec() const { return _time.tv_nsec; }
- public:
- static const Time start;
+ void sec(time_t sec) { _time.tv_sec = sec; }
+ void msec(long msec) { _time.tv_nsec = msec * NSEC_PER_MSEC; }
+ void usec(long usec) { _time.tv_nsec = usec * NSEC_PER_USEC; }
+ void nsec(long nsec) { _time.tv_nsec = nsec; }
+
+ /**
+ * Clear the time
+ */
+ void clear() { memset(&_time, 0, sizeof(_time)); }
+
+ /**
+ * Use this to set time for the purposes of time measurement (use
+ * a monotonic clock if it is available
+ */
+ void setTimer() { _set(true); }
+
+ /**
+ * Use this to set the time to the actual current time
+ */
+ void setWallclock() { _set(false); }
+
+ /**
+ * Set the current time
+ */
+ void set(time_t _sec, long _nsec) { sec(_sec); nsec(_nsec); }
+
+ const Time &
+ operator=(const Time &other)
+ {
+ sec(other.sec());
+ nsec(other.nsec());
+ return *this;
+ }
+
+ const Time &
+ operator=(double new_time)
+ {
+ double seconds = floor(new_time);
+ sec((time_t)seconds);
+ nsec((long)((seconds - new_time) * 1e9));
+ return *this;
+ }
+
+ const Time &
+ operator=(const timeval &tv)
+ {
+ sec(tv.tv_sec);
+ nsec(tv.tv_usec * 1000);
+ return *this;
+ }
+
+ const Time &
+ operator=(const timespec &ts)
+ {
+ sec(ts.tv_sec);
+ nsec(ts.tv_nsec);
+ return *this;
+ }
+
+ /**
+ * Get the time in floating point seconds
+ */
+ operator double() const
+ {
+ return (double)sec() + ((double)nsec()) * 1e-9;
+ }
+
+ /**
+ * operators for time conversion
+ */
+ operator timespec() const { return _time; }
+ operator timeval() const
+ {
+ timeval tv;
+ tv.tv_sec = sec();
+ tv.tv_usec = usec();
+ return tv;
+ }
+
+ const Time &
+ operator+=(const Time &other)
+ {
+
+ _time.tv_sec += other.sec();
+ _time.tv_nsec += other.nsec();
+ if (_time.tv_nsec > NSEC_PER_SEC) {
+ _time.tv_sec++;
+ _time.tv_nsec -= NSEC_PER_SEC;
+ }
+
+ return *this;
+ }
+
+ const Time &
+ operator-=(const Time &other)
+ {
+ _time.tv_sec -= other.sec();
+ _time.tv_nsec -= other.nsec();
+ if (_time.tv_nsec < 0) {
+ _time.tv_sec--;
+ _time.tv_nsec += NSEC_PER_SEC;
+ }
+
+ return *this;
+ }
+
+ std::string date(const std::string &format = "") const;
+ std::string time() const;
};
-Time operator-(const Time &l, const Time &r);
+void sleep(const Time &time);
-std::ostream &operator<<(std::ostream &out, const Time &time);
+inline bool
+operator==(const Time &l, const Time &r)
+{
+ return l.sec() == r.sec() && l.nsec() == r.nsec();
+}
+inline bool
+operator!=(const Time &l, const Time &r)
+{
+ return l.sec() != r.sec() || l.nsec() != r.nsec();
+}
-/*
- * Copyright (c) 1982, 1986, 1993
- * The Regents of the University of California. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the name of the University nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * @(#)time.h 8.2 (Berkeley) 7/10/94
- */
+inline bool
+operator<(const Time &l, const Time &r)
+{
+ return (l.sec() < r.sec()) ||
+ (l.sec() == r.sec() && l.nsec() < r.nsec());
+}
+
+inline bool
+operator<=(const Time &l, const Time &r)
+{
+ return (l.sec() < r.sec()) ||
+ (l.sec() == r.sec() && l.nsec() <= r.nsec());
+}
+
+inline bool
+operator>(const Time &l, const Time &r)
+{
+ return (l.sec() > r.sec()) ||
+ (l.sec() == r.sec() && l.nsec() > r.nsec());
+}
+
+inline bool
+operator>=(const Time &l, const Time &r)
+{
+ return (l.sec() > r.sec()) ||
+ (l.sec() == r.sec() && l.nsec() >= r.nsec());
+}
+
+inline Time
+operator+(const Time &l, const Time &r)
+{
+ Time time(l);
+ time += r;
+ return time;
+}
+
+inline Time
+operator-(const Time &l, const Time &r)
+{
+ Time time(l);
+ time -= r;
+ return time;
+}
+
+inline std::ostream &
+operator<<(std::ostream &out, const Time &time)
+{
+ out << time.date();
+ return out;
+}
-#if defined(__sun)
-#define timersub(tvp, uvp, vvp) \
- do { \
- (vvp)->tv_sec = (tvp)->tv_sec - (uvp)->tv_sec; \
- (vvp)->tv_usec = (tvp)->tv_usec - (uvp)->tv_usec; \
- if ((vvp)->tv_usec < 0) { \
- (vvp)->tv_sec--; \
- (vvp)->tv_usec += 1000000; \
- } \
- } while (0)
-#endif
-
-#endif // __SIM_TIME_HH__
+#endif // __BASE_TIME_HH__
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