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** file: inrval.c
** description: Interval conversion test.
** Modification History:
** 15-May-97 AGarcia- Converted the test to accomodate the debug_mode flag.
** The debug mode will print all of the printfs associated with this test.
** The regress mode will be the default mode. Since the regress tool limits
** the output to a one line status:PASS or FAIL,all of the printf statements
** have been handled with an if (debug_mode) statement.
** 04-June-97 AGarcia removed the Test_Result function. Regress tool has been updated to
** recognize the return code from tha main program.
** Includes
/* Used to get the command line option */
#include "plgetopt.h"
#include "prinit.h"
#include "obsolete/pralarm.h"
#include "prio.h"
#include "prprf.h"
#include "prlock.h"
#include "prlong.h"
#include "prcvar.h"
#include "prinrval.h"
#include "prtime.h"
#include "plgetopt.h"
#include <stdio.h>
#include <stdlib.h>
static PRIntn debug_mode;
static PRFileDesc *output;
static void TestConversions(void)
PRIntervalTime ticks = PR_TicksPerSecond();
if (debug_mode) {
PR_fprintf(output, "PR_TicksPerSecond: %ld\n\n", ticks);
PR_fprintf(output, "PR_SecondsToInterval(1): %ld\n", PR_SecondsToInterval(1));
PR_fprintf(output, "PR_MillisecondsToInterval(1000): %ld\n", PR_MillisecondsToInterval(1000));
PR_fprintf(output, "PR_MicrosecondsToInterval(1000000): %ld\n\n", PR_MicrosecondsToInterval(1000000));
PR_fprintf(output, "PR_SecondsToInterval(3): %ld\n", PR_SecondsToInterval(3));
PR_fprintf(output, "PR_MillisecondsToInterval(3000): %ld\n", PR_MillisecondsToInterval(3000));
PR_fprintf(output, "PR_MicrosecondsToInterval(3000000): %ld\n\n", PR_MicrosecondsToInterval(3000000));
PR_fprintf(output, "PR_IntervalToSeconds(%ld): %ld\n", ticks, PR_IntervalToSeconds(ticks));
PR_fprintf(output, "PR_IntervalToMilliseconds(%ld): %ld\n", ticks, PR_IntervalToMilliseconds(ticks));
PR_fprintf(output, "PR_IntervalToMicroseconds(%ld): %ld\n\n", ticks, PR_IntervalToMicroseconds(ticks));
ticks *= 3;
PR_fprintf(output, "PR_IntervalToSeconds(%ld): %ld\n", ticks, PR_IntervalToSeconds(ticks));
PR_fprintf(output, "PR_IntervalToMilliseconds(%ld): %ld\n", ticks, PR_IntervalToMilliseconds(ticks));
PR_fprintf(output, "PR_IntervalToMicroseconds(%ld): %ld\n\n", ticks, PR_IntervalToMicroseconds(ticks));
} /*end debug mode */
} /* TestConversions */
static void TestIntervalOverhead(void)
/* Hopefully the optimizer won't delete this function */
PRUint32 elapsed, per_call, loops = 1000000;
PRIntervalTime timeout, timein = PR_IntervalNow();
while (--loops > 0)
timeout = PR_IntervalNow();
elapsed = 1000U * PR_IntervalToMicroseconds(timeout - timein);
per_call = elapsed / 1000000U;
output, "Overhead of 'PR_IntervalNow()' is %u nsecs\n\n", per_call);
} /* TestIntervalOverhead */
static void TestNowOverhead(void)
PRTime timeout, timein;
PRInt32 overhead, loops = 1000000;
PRInt64 elapsed, per_call, ten23rd, ten26th;
LL_I2L(ten23rd, 1000);
LL_I2L(ten26th, 1000000);
timein = PR_Now();
while (--loops > 0)
timeout = PR_Now();
LL_SUB(elapsed, timeout, timein);
LL_MUL(elapsed, elapsed, ten23rd);
LL_DIV(per_call, elapsed, ten26th);
LL_L2I(overhead, per_call);
output, "Overhead of 'PR_Now()' is %u nsecs\n\n", overhead);
} /* TestNowOverhead */
static void TestIntervals(void)
PRStatus rv;
PRUint32 delta;
PRInt32 seconds;
PRUint64 elapsed, thousand;
PRTime timein, timeout;
PRLock *ml = PR_NewLock();
PRCondVar *cv = PR_NewCondVar(ml);
for (seconds = 0; seconds < 10; ++seconds)
PRIntervalTime ticks = PR_SecondsToInterval(seconds);
timein = PR_Now();
rv = PR_WaitCondVar(cv, ticks);
timeout = PR_Now();
LL_SUB(elapsed, timeout, timein);
LL_I2L(thousand, 1000);
LL_DIV(elapsed, elapsed, thousand);
LL_L2UI(delta, elapsed);
if (debug_mode) PR_fprintf(output,
"TestIntervals: %swaiting %ld seconds took %ld msecs\n",
((rv == PR_SUCCESS) ? "" : "FAILED "), seconds, delta);
if (debug_mode) PR_fprintf(output, "\n");
} /* TestIntervals */
static PRIntn PR_CALLBACK RealMain(int argc, char** argv)
PRUint32 vcpu, cpus = 0, loops = 1000;
/* The command line argument: -d is used to determine if the test is being run
in debug mode. The regress tool requires only one line output:PASS or FAIL.
All of the printfs associated with this test has been handled with a if (debug_mode)
Usage: test_name -d
/* main test */
PLOptStatus os;
PLOptState *opt = PL_CreateOptState(argc, argv, "dl:c:");
while (PL_OPT_EOL != (os = PL_GetNextOpt(opt)))
if (PL_OPT_BAD == os) continue;
switch (opt->option)
case 'd': /* debug mode */
debug_mode = 1;
case 'c': /* concurrency counter */
cpus = atoi(opt->value);
case 'l': /* loop counter */
loops = atoi(opt->value);
output = PR_GetSpecialFD(PR_StandardOutput);
PR_fprintf(output, "inrval: Examine stdout to determine results.\n");
if (cpus == 0) cpus = 8;
if (loops == 0) loops = 1000;
if (debug_mode > 0)
PR_fprintf(output, "Inrval: Using %d loops\n", loops);
PR_fprintf(output, "Inrval: Using 1 and %d cpu(s)\n", cpus);
for (vcpu = 1; vcpu <= cpus; vcpu += cpus - 1)
if (debug_mode)
PR_fprintf(output, "\nInrval: Using %d CPU(s)\n\n", vcpu);
return 0;
int main(int argc, char **argv)
PRIntn rv;
rv = PR_Initialize(RealMain, argc, argv, 0);
return rv;
} /* main */