78 lines
2.0 KiB
Bash
78 lines
2.0 KiB
Bash
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# SPDX-License-Identifier: GPL-2.0
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tenths=date\ +%s%1N
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# Wait for PID $1 to have $2 number of threads started
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# Time out after $3 tenths of a second or 5 seconds if $3 is ""
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wait_for_threads()
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{
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tm_out=$3 ; [ -n "${tm_out}" ] || tm_out=50
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start_time=$($tenths)
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while [ -e "/proc/$1/task" ] ; do
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th_cnt=$(find "/proc/$1/task" -mindepth 1 -maxdepth 1 -printf x | wc -c)
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if [ "${th_cnt}" -ge "$2" ] ; then
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return 0
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fi
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# Wait at most tm_out tenths of a second
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if [ $(($($tenths) - start_time)) -ge $tm_out ] ; then
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echo "PID $1 does not have $2 threads"
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return 1
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fi
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done
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return 1
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}
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# Wait for perf record -vvv 2>$2 with PID $1 to start by looking at file $2
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# It depends on capturing perf record debug message "perf record has started"
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# Time out after $3 tenths of a second or 5 seconds if $3 is ""
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wait_for_perf_to_start()
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{
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tm_out=$3 ; [ -n "${tm_out}" ] || tm_out=50
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echo "Waiting for \"perf record has started\" message"
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start_time=$($tenths)
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while [ -e "/proc/$1" ] ; do
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if grep -q "perf record has started" "$2" ; then
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echo OK
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break
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fi
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# Wait at most tm_out tenths of a second
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if [ $(($($tenths) - start_time)) -ge $tm_out ] ; then
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echo "perf recording did not start"
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return 1
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fi
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done
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return 0
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}
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# Wait for process PID %1 to exit
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# Time out after $2 tenths of a second or 5 seconds if $2 is ""
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wait_for_process_to_exit()
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{
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tm_out=$2 ; [ -n "${tm_out}" ] || tm_out=50
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start_time=$($tenths)
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while [ -e "/proc/$1" ] ; do
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# Wait at most tm_out tenths of a second
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if [ $(($($tenths) - start_time)) -ge $tm_out ] ; then
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echo "PID $1 did not exit as expected"
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return 1
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fi
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done
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return 0
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}
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# Check if PID $1 is still running after $2 tenths of a second
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# or 0.3 seconds if $2 is ""
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is_running()
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{
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tm_out=$2 ; [ -n "${tm_out}" ] || tm_out=3
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start_time=$($tenths)
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while [ -e "/proc/$1" ] ; do
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# Check for at least tm_out tenths of a second
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if [ $(($($tenths) - start_time)) -gt $tm_out ] ; then
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return 0
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fi
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done
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echo "PID $1 exited prematurely"
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return 1
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}
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