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#!/bin/sh
#
# Check tracing of looping threads.
#
# Copyright (c) 2009-2024 The strace developers.
# All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0-or-later
. "${srcdir=.}/init.sh"
. "${srcdir=.}/PTRACE_SEIZE.sh"
run_prog ../orphaned_process_group > /dev/null
run_prog_skip_if_failed date +%s > /dev/null
s0="$(date +%s)"
check_prog nproc
inc="$(nproc)"
[ "$inc" -ge 1 ] || inc=1
[ 4 -le "$TIMEOUT_DURATION" ] || TIMEOUT_DURATION=4
timeout_2="$((TIMEOUT_DURATION/2))"
timeout_4_sqr=$(sq_root "$((TIMEOUT_DURATION/4))")
nproc=1
run_prog "../$NAME" "$timeout_4_sqr" "$nproc"
while :; do
run_strace --follow-forks -qq -enone -esignal=none "../$NAME" "$timeout_2" "$nproc"
s1="$(date +%s)"
[ "$((s1-s0))" -lt "$timeout_4_sqr" ] ||
break
nproc="$((nproc+inc))"
done
warn_ "$ME_: nproc=$nproc elapsed=$((s1-s0))"
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