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test: make the strace check a bit more clever

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We still sometimes try to grep an empty strace log because strace is not
yet properly initialized. Let's make the check a bit clever and wait
until strace is attached to PID 1 by checking the `TracerPid` field in
`/proc/1/status`.
This commit is contained in:
Frantisek Sumsal 2021-07-09 15:22:41 +02:00
parent e68e473ba2
commit 7e8cfa4bb6
1 changed files with 3 additions and 2 deletions
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5
test/units/testsuite-36.sh
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@ -34,8 +34,9 @@ journalCursorFile="jounalCursorFile"
startStrace() {
coproc strace -qq -p 1 -o "$straceLog" -e set_mempolicy -s 1024 ${1:+"$1"}
# Wait for strace to properly "initialize"
sleep $sleepAfterStart
# Wait for strace to properly "initialize", i.e. until PID 1 has the TracerPid
# field set to the current strace's PID
while ! awk -v spid="$COPROC_PID" '/^TracerPid:/ {exit !($2 == spid);}' /proc/1/status; do sleep 0.1; done
}
stopStrace() {