tools/OAD_support/timeRatio.c

8702af1f36 Patr*0001 #include <sys/time.h>
                0002 #include <stdio.h>
                0003
                0004 void timeratio_() {
                0005   /*
                0006      three invocations produce
                0007      the ratio of the timedifference of
                0008      the 3rd vs. the 2nd invocation over
                0009      the difference of the 2nd vs. the 1st invocation
                0010   */
                0011   static short stage=0;
                0012 #define tvCount 3
                0013   static struct timeval tv_a[tvCount];
                0014   double deltaThis, deltaPrevious;
                0015   if (stage<tvCount)
                0016     gettimeofday(&(tv_a[stage]),0);
                0017   printf("OAD: TIMING: stamp %u: %lu.%06lu\n",
                0018      stage,
                0019      tv_a[stage].tv_sec,
                0020      tv_a[stage].tv_usec);
                0021   if (stage>0) {
                0022     printf("OAD: TIMING: delta stamps %u-%u: %lu.%06lu\n",
                0023            stage,
                0024            stage-1,
                0025            (tv_a[stage].tv_usec<tv_a[stage-1].tv_usec)?tv_a[stage].tv_sec-tv_a[stage-1].tv_sec-1:tv_a[stage].tv_sec-tv_a[stage-1].tv_sec,
                0026            (tv_a[stage].tv_usec<tv_a[stage-1].tv_usec)?1000000-(tv_a[stage-1].tv_usec-tv_a[stage].tv_usec):tv_a[stage].tv_usec-tv_a[stage-1].tv_usec);
                0027   }
                0028   if (stage>1) {
                0029     printf("OAD: TIMING: delta stamps %u-%u: %lu.%06lu\n",
                0030            stage,
                0031            0,
                0032            (tv_a[stage].tv_usec<tv_a[0].tv_usec)?tv_a[stage].tv_sec-tv_a[0].tv_sec-1:tv_a[stage].tv_sec-tv_a[0].tv_sec,
                0033            (tv_a[stage].tv_usec<tv_a[0].tv_usec)?1000000-(tv_a[0].tv_usec-tv_a[stage].tv_usec):tv_a[stage].tv_usec-tv_a[0].tv_usec);
                0034   }
                0035   if (stage==tvCount-1 && stage>1) {
                0036     deltaThis=(tv_a[stage].tv_usec<tv_a[stage-1].tv_usec)?tv_a[stage].tv_sec-tv_a[stage-1].tv_sec-1:tv_a[stage].tv_sec-tv_a[stage-1].tv_sec;
                0037     deltaThis*=1.0e6;
                0038     deltaThis+=(tv_a[stage].tv_usec<tv_a[stage-1].tv_usec)?1000000-(tv_a[stage-1].tv_usec-tv_a[stage].tv_usec):tv_a[stage].tv_usec-tv_a[stage-1].tv_usec;
                0039     deltaPrevious=(tv_a[stage-1].tv_usec<tv_a[stage-2].tv_usec)?tv_a[stage-1].tv_sec-tv_a[stage-2].tv_sec-1:tv_a[stage-1].tv_sec-tv_a[stage-2].tv_sec;
                0040     deltaPrevious*=1.0e6;
                0041     deltaPrevious+=(tv_a[stage-1].tv_usec<tv_a[stage-2].tv_usec)?1000000-(tv_a[stage-2].tv_usec-tv_a[stage-1].tv_usec):tv_a[stage-1].tv_usec-tv_a[stage-2].tv_usec;
                0042     printf("OAD: TIMING: ratio stamps (%u-%u)/(%u-%u): %e/%e=%e\n",
                0043        stage,
                0044        stage-1,
                0045        stage-1,
                0046        stage-2,
                0047        deltaThis,
                0048        deltaPrevious,
                0049        deltaThis/deltaPrevious);
                0050     stage=0;
                0051   }
                0052   else
                0053     stage++;
                0054 }