osal_timer_UT periodic failure #335
Description
Describe the bug
osal_timer_UT periodically reports a failure on linux for the nominal OS_TimerSet case
To Reproduce
- Build and run
make ENABLE_UNIT_TESTS=TRUE SIMULATION=native prep
make
make install
build/exe/cpu1/osal_timer_UT
Expected behavior
Should pass
Code snips
See ut_ostimer_test.c for UT_os_timercallback (the timer callback function)
See ut_ostimer_timerio_test.c line 654 for the failure location
System observed on:
- cFS Dev 2 Server
- OS: Ubuntu 18.04
- Versions: happened to be running the ic-20191230 branches, but not unique (historical issue)
Additional context
Added after the tolerance check in the callback function:
printf("\ndeltaTime = %d\n", deltaTime);
printf("g_toleranceVal = %d\n", g_toleranceVal);
printf("currIntervalTime = %d\n", currIntervalTime);
printf("prevIntervalTime = %d\n", prevIntervalTime);
printf("endTime = %d sec, %d msec\n", endTime.seconds, endTime.microsecs);
printf("currTime = %d sec, %d msec\n", currTime.seconds, currTime.microsecs);
failure result was seen due to unexpected first interval of 1056, where interval was set to 500000:
deltaTime = 0
g_toleranceVal = 25000
currIntervalTime = 0
prevIntervalTime = 0
endTime = 1577812468 sec, 179711 msec
currTime = 1577812468 sec, 179711 msec
deltaTime = 1056
g_toleranceVal = 25000
currIntervalTime = 1056
prevIntervalTime = 0
endTime = 1577812468 sec, 180767 msec
currTime = 1577812468 sec, 179711 msec
deltaTime = 498945
g_toleranceVal = 25000
currIntervalTime = 500001
prevIntervalTime = 1056
endTime = 1577812468 sec, 680768 msec
currTime = 1577812468 sec, 180767 msec
deltaTime = 12
g_toleranceVal = 25000
currIntervalTime = 499989
prevIntervalTime = 500001
endTime = 1577812469 sec, 180757 msec
currTime = 1577812468 sec, 680768 msec
Reporter Info
Jacob Hageman - NASA/GSFC