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- /* $Id: timer.h 2071 2008-11-09 08:36:02Z aturner $ */
- /*
- * Copyright (c) 2001-2007 Aaron Turner.
- * 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 names of the copyright owners 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 ``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 AUTHORS OR COPYRIGHT HOLDERS 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.
- */
- #ifndef _TIMER_H_
- #define _TIMER_H_
- #include "config.h"
- #include "defines.h"
- #include "tcpreplay.h"
- #include "common.h"
- #include <time.h>
- #include <sys/time.h>
- #include <math.h>
- #ifdef HAVE_ABSOLUTE_TIME
- #include <CoreServices/CoreServices.h>
- #endif
- /* AbsoluteTime methods */
- #ifndef NonZero
- #define NonZero(x) ((x).hi | (x).lo)
- #endif
- #ifndef SetZero
- #define SetZero(x) do { (x).hi = 0 ; (x).lo = 0; } while(0)
- #endif
- #ifndef CopyAbsolute
- #define CopyAbsolute(x, y) do { (x).lo = (y).lo ; (x).hi = (y).hi; } while (0)
- #endif
- #ifndef AbsoluteCmp
- #define AbsoluteCmp(left, right, cmp) \
- (((left)->hi == (right)->hi) ? \
- ((left)->lo cmp (right)->lo) : \
- ((left)->hi cmp (right)->hi))
- #endif
- /*
- * 1 sec = 1,0000 millisec (ms)
- * 1 sec = 1,000,000 microsec (us)
- * 1 sec = 1,000,000,000 nanosec (ns)
- * 1 millisec = 1,000 microsec
- * 1 microsec = 1,000 nanosec
- */
- void timerdiv(struct timeval *tvp, float div);
- void timesdiv(struct timespec *tvs, float div);
- /* convert float time to struct timeval *tvp */
- #ifndef float2timer
- #define float2timer(time, tvp) \
- do { \
- tvp->tv_sec = time; \
- tvp->tv_usec = (time - tvp->tv_sec) * 100000; \
- } while (0)
- #endif
- /* timesec to float */
- #ifndef timer2float
- #define timer2float(tvp, time) \
- do { \
- time = tvp->tv_sec; \
- time += (float)(tvp->tv_usec / 10000) * 0.01; \
- } while (0)
- #endif
- #ifndef TIMEVAL_TO_TIMESPEC
- #define TIMEVAL_TO_TIMESPEC(tv, ts) { \
- (ts)->tv_sec = (tv)->tv_sec; \
- (ts)->tv_nsec = (tv)->tv_usec * 1000; }
- #endif
- #ifndef TIMESPEC_TO_TIMEVAL
- #define TIMESPEC_TO_TIMEVAL(tv, ts) { \
- (tv)->tv_sec = (ts)->tv_sec; \
- (tv)->tv_usec = (ts)->tv_nsec / 1000; }
- #endif
- #ifndef ROUND_TIMESPEC_TO_MICROSEC
- #define ROUND_TIMESPEC_TO_MICROSEC(ts) \
- do { \
- (ts)->tv_nsec = ((((ts)->tv_nsec / 1000) + ((ts)->tv_nsec % 1000 >= 500 ? 1 : 0)) * 1000); \
- } while (0)
- #endif
- /* zero out a timer */
- #ifndef timerclear
- #define timerclear(tvp) (tvp)->tv_sec = (tvp)->tv_usec = 0
- #endif
- /* zero out a timespec */
- #ifndef timesclear
- #define timesclear(tvs) (tvs)->tv_sec = (tvs)->tv_nsec = 0
- #endif
- /* is timer non-zero? */
- #ifndef timerisset
- #define timerisset(tvp) ((tvp)->tv_sec || (tvp)->tv_usec)
- #endif
- /* is timespec non-zero? */
- #ifndef timesisset
- #define timesisset(tvs) ((tvs)->tv_sec || (tvs)->tv_nsec)
- #endif
- /* add tvp and uvp and store in vvp */
- #ifndef timeradd
- #define timeradd(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 >= 1000000) { \
- (vvp)->tv_sec++; \
- (vvp)->tv_usec -= 1000000; \
- } \
- } while (0)
- #endif
- /* subtract uvp from tvp and store in vvp */
- #ifndef timersub
- #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
- #ifndef timessub
- #define timessub(tsp, usp, vsp) \
- do { \
- (vsp)->tv_sec = (tsp)->tv_sec - (usp)->tv_sec; \
- (vsp)->tv_nsec = (tsp)->tv_nsec - (usp)->tv_nsec; \
- if ((vsp)->tv_nsec < 0) { \
- (vsp)->tv_sec--; \
- (vsp)->tv_nsec += 1000000000; \
- } \
- } while (0)
- #endif
- /* compare tvp and uvp using cmp */
- #ifndef timercmp
- #define timercmp(tvp, uvp, cmp) \
- (((tvp)->tv_sec == (uvp)->tv_sec) ? \
- ((tvp)->tv_usec cmp (uvp)->tv_usec) : \
- ((tvp)->tv_sec cmp (uvp)->tv_sec))
- #endif
- #ifndef timescmp
- #define timescmp(tsp, usp, cmp) \
- (((tsp)->tv_sec == (usp)->tv_sec) ? \
- ((tsp)->tv_nsec cmp (usp)->tv_nsec) : \
- ((tsp)->tv_sec cmp (usp)->tv_sec))
- #endif
- /* multiply tvp by x and store in uvp */
- #define timermul(tvp, uvp, x) \
- do { \
- (uvp)->tv_sec = (tvp)->tv_sec * x; \
- (uvp)->tv_usec = (tvp)->tv_usec * x; \
- while((uvp)->tv_usec > 1000000) { \
- (uvp)->tv_sec++; \
- (uvp)->tv_usec -= 1000000; \
- } \
- } while(0)
- #ifdef HAVE_ABSOLUTE_TIME
- typedef AbsoluteTime delta_t;
- #else
- typedef struct timeval delta_t;
- #endif
- /*
- * starts a timer so we can figure out how much time has passed
- * when we call get_delta_timer()
- */
- static inline void
- start_delta_time(delta_t *ctx)
- {
- #ifdef HAVE_ABSOLUTE_TIME
- *ctx = UpTime();
- #else
- gettimeofday(ctx, NULL);
- #endif
- }
- void init_delta_time(delta_t *ctx);
- /*
- * returns the amount of time that has passed since the
- * last time you called start_delta_time()
- */
- static inline void
- get_delta_time(delta_t *ctx, struct timespec *ret)
- {
- /* OS X has absolute time */
- #ifdef HAVE_ABSOLUTE_TIME
- AbsoluteTime now, delta;
- Nanoseconds nano;
-
- now = UpTime();
-
- if (! NonZero(*ctx)) {
- timesclear(ret);
- } else {
- delta = SubAbsoluteFromAbsolute(now, *ctx);
- nano = AbsoluteToNanoseconds(delta);
- NANOSEC_TO_TIMESPEC(UnsignedWideToUInt64(nano) / 10, ret);
- }
-
- /* Everyone else just uses gettimeofday */
- #else
- struct timeval now, delta;
-
- gettimeofday(&now, NULL);
- if (!timerisset(ctx)) {
- timesclear(ret);
- } else {
- timersub(&now, ctx, &delta);
- TIMEVAL_TO_TIMESPEC(&delta, ret);
- }
- #endif
- }
- #endif /* _TIMER_H_ */
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