void nested()
{
/* local variable definition */
sysClkRateSet(1000);
sysTimestampEnable();
jiffies_per_tick = sysTimestampPeriod();
clock_frequency = sysTimestampFreq();
microseconds_per_tick = (jiffies_per_tick / clock_frequency)*1000000.0;
microseconds_per_jiffy = microseconds_per_tick / jiffies_per_tick;
int i, j, p;
start_profiling();
for(i=2; i<100; i++) {
start_profiling_in();
for(j=2; j <= (i/j); j++)
if(!(i%j)) break; /* if factor found, not prime*/
stop_profiling_in();
if(j > (i/j)) p = i;
}
stop_profiling();
output_profiling("nested for outer loop including inner loop profiling");
start_profiling();
for(i=2; i<100; i++) {
for(j=2; j <= (i/j); j++)
if(!(i%j)) break; /* if factor found, not prime*/
if(j > (i/j)) p = i;
}
stop_profiling();
output_profiling("nested for outer loop without inner loop profiling");
}
/******************************************************************************
** Function: CFE_PSP_GetTimerTicksPerSecond()
**
** Purpose:
** Provides the resolution of the least significant 32 bits of the 64 bit
** time stamp returned by CFE_PSP_Get_Timebase in timer ticks per second.
** The timer resolution for accuracy should not be any slower than 1000000
** ticks per second or 1 us per tick
**
** Arguments:
**
** Return:
** The number of timer ticks per second of the time stamp returned
** by CFE_PSP_Get_Timebase
*/
uint32 CFE_PSP_GetTimerTicksPerSecond(void)
{
uint32 ticksPerSec = CFE_PSP_TIMER_TICKS_PER_SECOND;
if(g_bTimerInitialized == TRUE)
{
ticksPerSec = sysTimestampFreq();
}
return ticksPerSec;
}
void taskDeleteCallback(WIND_TCB *pTcb) {
long curTime = sysTimestamp();
char * self = (char *)taskName(taskIdSelf());
long execTime = pTcb->spare1 + curTime - pTcb->spare2;
long microsecExecTime = 1000000 * (double)execTime / sysTimestampFreq();
if (strcmp(self, mqs) == 0 ||
strcmp(self, mbs) == 0 ||
strcmp(self, mns) == 0 ||
strcmp(self, sup) == 0) {
printf("Task %s: no. of premptions: %d --- Execution time (microsec): %d.\n",
self, pTcb->spare3, microsecExecTime);
}
if (strcmp(self, sup) == 0) {
long elapsed = curTime - pTcb->spare4;
long totalTime = 1000000 * (double)elapsed / sysTimestampFreq();
printf("Absolute execution time (microsec): %d.\n", totalTime);
printf("System-wide total number of premptions: %d\n", premptionCounter);
}
return;
}
void CFE_PSP_InitLocalTime(void)
{
/* Set the sys clock rate */
sysClkRateSet(200);
/*
** Disable the Aux timer interrupt, and disable the Timestamp timer
*/
sysAuxClkDisable();
if(sysTimestampDisable() == ERROR)
{
OS_printf("CFE_PSP: Unable to disable the Timestamp timer!\n");
}
/*
** Set the Aux timer
*/
if(sysAuxClkRateGet() != CFE_PSP_TIMER_AUX_TICK_PER_SEC)
{
if(sysAuxClkRateSet(CFE_PSP_TIMER_AUX_TICK_PER_SEC) == ERROR)
{
OS_printf("CFE_PSP: Unable to set Aux Clock Rate!\n");
}
if(CFE_PSP_TIMER_PRINT_DBG == TRUE)
{
OS_printf("CFE_PSP: Aux Clock Rate %d.\n", sysAuxClkRateGet());
OS_printf("CFE_PSP: Timestamp Frequency %u.\n", sysTimestampFreq());
OS_printf("CFE_PSP: Timestamp Period %u.\n", sysTimestampPeriod());
}
}
}/* end CFE_PSP_InitLocalTime */
/******************************************************************************
** Function: CFE_PSP_Get_Timebase()
**
** Purpose:
** Provides a common interface to system timebase. This routine
** is in the BSP because it is sometimes implemented in hardware and
** sometimes taken care of by the RTOS.
**
** Arguments:
**
** Return:
** Timebase register value
*/
void CFE_PSP_Get_Timebase(uint32 *Tbu, uint32* Tbl)
{
uint32 upper = 0;
uint32 lower = 0;
int32 key = 0;
/*
** We don't want an interrupt to occur when the time requested.
** According to notes from vxWorks, intLock does not stop reschededuling
** of the calling task, so we have lock the task as well.
**
** sysTimestampLock() automatically blocks interrupts during execution.
**
** taskLock() is not valid on SMP systems and taskCpuLock (VxWorks 6.6+)
** should be used instead.
*/
if(g_bTimerInitialized == TRUE)
{
#if _WRS_VXWORKS_MINOR >= 6
if (taskCpuLock() == OK)
#else
if (taskLock() == OK)
#endif
{
/*
** Tbu is the upper 32 bits of a 64 bit counter.
** Tbl is the lower 32 bits of a 64 bit counter.
** The resolution of our timer is given by:
** one timer tick = 1 / sysTimestampFreq() in seconds
*/
upper = g_nSecondsCount;
lower = sysTimestampLock();
lower /= sysTimestampFreq() / 1000000UL;
#if _WRS_VXWORKS_MINOR >= 6
taskCpuUnlock();
#else
taskUnlock();
#endif
}
else
{
/*
** What if you can't lock the task
*/
OS_printf("CFE PSP Get Timebase: Unable to lock task!");
}
}
else
{
OS_printf("CFE PSP Get Timebase: Timer is not initialized!");
}
if(Tbu != NULL)
{
*Tbu = upper;
}
if(Tbl != NULL)
{
*Tbl = lower;
}
}
void CFE_PSP_GetTime(OS_time_t *LocalTime)
{
uint32 nTimeStamp = 0;
uint32 nFrequency = 0;
uint32 nScaler = 0;
unsigned long long ullTimeStamp = 0;
if(LocalTime == NULL)
{
return;
}
else
{
if(g_bTimerInitialized == FALSE)
{
LocalTime->seconds = 0;
LocalTime->microsecs = 0;
return;
}
else
{
/*
** Get the time stamp
*/
/* Lock interrupts - really should be using this one, over
* sysTimestamp(), according to
* documentation on these function calls */
nTimeStamp = sysTimestampLock();
/* the default frequency is 9,375,000 Hz, which equals the PSP
* ticks per second value
* frequency = ticks per second for this counter
*/
nFrequency = sysTimestampFreq();
/* could use seconds = nTimeStamp / nFrequency if the timestamp counter
* was a 64-bit counter, but being a 32-bit counter, running at
* 9375000 Hz, it rolls over every 458.129 seconds or 7.63 minutes,
* so we have to increment seconds using the aux clk ISR and get
* the subseconds from the timestamp timer */
LocalTime->seconds = g_nSecondsCount;
/* convert to micro sec - this conversion assumes that nTimeStamp
* is always less than a second, which it should be, because it is
* reset at the top of each second (when the seconds counter is
* incremented) -- this comp has to be performed as an unsigned
* long long, as the result of the multiply will not fit in a 32-bit
* var. After dividing by the frequency(ticks per second), the result
* can be stored in a 32-bit value
*/
ullTimeStamp = ((unsigned long long)nTimeStamp * 1000000ULL) /
(unsigned long long) nFrequency;
LocalTime->microsecs = (uint32)ullTimeStamp;
/*
logMsg("time: %u.%u ts: %u sc: %u\n",
LocalTime->seconds,LocalTime->microsecs,
nTimeStamp,g_nSecondsCount,0,0);
*/
}
}
}/* end CFE_PSP_GetTime */