mirror of
https://github.com/percona/percona-toolkit.git
synced 2025-09-01 18:25:59 +00:00
67 lines
2.3 KiB
Bash
67 lines
2.3 KiB
Bash
# This program is copyright 2013 Percona Ireland Ltd.
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# Feedback and improvements are welcome.
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#
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# THIS PROGRAM IS PROVIDED "AS IS" AND WITHOUT ANY EXPRESS OR IMPLIED
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# WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
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# MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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#
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# This program is free software; you can redistribute it and/or modify it under
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# the terms of the GNU General Public License as published by the Free Software
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# Foundation, version 2; OR the Perl Artistic License. On UNIX and similar
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# systems, you can issue `man perlgpl' or `man perlartistic' to read these
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# licenses.
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#
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# You should have received a copy of the GNU General Public License along with
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# this program; if not, write to the Free Software Foundation, Inc., 59 Temple
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# Place, Suite 330, Boston, MA 02111-1307 USA.
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# ###########################################################################
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# subshell package
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# ###########################################################################
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# Package: subshell
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set -u
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wait_for_subshells() {
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local max_wait=$1
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if [ "$(jobs)" ]; then
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log "Waiting up to $max_wait seconds for subprocesses to finish..."
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local slept=0
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while [ -n "$(jobs)" ]; do
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local subprocess_still_running=""
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for pid in $(jobs -p); do
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if kill -0 $pid >/dev/null 2>&1; then
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subprocess_still_running=1
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fi
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done
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if [ "$subprocess_still_running" ]; then
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sleep 1
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slept=$((slept + 1))
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[ $slept -ge $max_wait ] && break
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else
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break
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fi
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done
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fi
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}
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kill_all_subshells() {
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if [ "$(jobs)" ]; then
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for pid in $(jobs -p); do
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if kill -0 $pid >/dev/null 2>&1; then
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# This isn't an warning (we don't want exit status 1) because
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# the system may be running slowly so it's just "natural" that
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# a collector may get stuck or run really slowly.
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log "Killing subprocess $pid"
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kill $pid >/dev/null 2>&1
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fi
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done
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else
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log "All subprocesses have finished"
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fi
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}
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# ###########################################################################
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# End subshell package
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# ###########################################################################
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