# Wait for PID $1 to have $2 number of threads started # Time out after $3 tenths of a second or 5 seconds if $3 is ""
wait_for_threads()
{
tm_out=$3 ; [ -n "${tm_out}" ] || tm_out=50
start_time=$($tenths) while [ -e "/proc/$1/task" ] ; do
th_cnt=$(find "/proc/$1/task" -mindepth 1 -maxdepth 1 -printf x | wc -c) if [ "${th_cnt}" -ge "$2" ] ; then
return 0 fi # Wait at most tm_out tenths of a second if [ $(($($tenths) - start_time)) -ge $tm_out ] ; then echo"PID $1 does not have $2 threads"
return 1 fi done
return 1
}
# Wait for perf record -vvv 2>$2 with PID $1 to start by looking at file $2 # It depends on capturing perf record debug message "perf record has started" # Time out after $3 tenths of a second or 5 seconds if $3 is ""
wait_for_perf_to_start()
{
tm_out=$3 ; [ -n "${tm_out}" ] || tm_out=50 echo"Waiting for \"perf record has started\" message"
start_time=$($tenths) while [ -e "/proc/$1" ] ; do if grep -q "perf record has started""$2" ; then echo OK
break fi # Wait at most tm_out tenths of a second if [ $(($($tenths) - start_time)) -ge $tm_out ] ; then echo"perf recording did not start"
return 1 fi done
return 0
}
# Wait for process PID %1 to exit # Time out after $2 tenths of a second or 5 seconds if $2 is ""
wait_for_process_to_exit()
{
tm_out=$2 ; [ -n "${tm_out}" ] || tm_out=50
start_time=$($tenths) while [ -e "/proc/$1" ] ; do # Wait at most tm_out tenths of a second if [ $(($($tenths) - start_time)) -ge $tm_out ] ; then echo"PID $1 did not exit as expected"
return 1 fi done
return 0
}
# Check if PID $1 is still running after $2 tenths of a second # or 0.3 seconds if $2 is ""
is_running()
{
tm_out=$2 ; [ -n "${tm_out}" ] || tm_out=3
start_time=$($tenths) while [ -e "/proc/$1" ] ; do # Check for at least tm_out tenths of a second if [ $(($($tenths) - start_time)) -gt $tm_out ] ; then
return 0 fi done echo"PID $1 exited prematurely"
return 1
}
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