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parallel: Converted to Getopt::Long. Implemented -TERM for shutdown.

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This commit is contained in:
Ole Tange 2010-02-03 15:23:20 +01:00
parent 495293ccc4
commit aaa69ffa1b
2 changed files with 49 additions and 16 deletions
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61
parallel
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@ -318,7 +318,7 @@ script.
=head1 LIST RUNNING JOBS
To list the jobs currently running you can run:
If you want a list of the jobs currently running you can run:
B<killall -USR1 parallel>
@ -329,9 +329,9 @@ B<parallel> will then print the currently running jobs on STDERR.
If you regret starting a lot of jobs you can simply break B<parallel>,
but if you want to make sure you do not have halfcompleted jobs you
should send the signal B<-USR2> to B<parallel>:
should send the signal B<SIGTERM> to B<parallel>:
B<killall -USR2 parallel>
B<killall -TERM parallel>
This will tell B<parallel> to not start any new jobs, but wait until
the currently running jobs are finished.
@ -352,6 +352,8 @@ B<xargs> deals badly with special characters (such as space, ' and
touch important_file
touch 'not important_file'
ls not* | xargs rm
mkdir -p '12" records'
ls | xargs rmdir
You can specify B<-0> or B<-d "\n">, but many input generators are not
optimized for using B<NUL> as separator but are optimized for
@ -428,15 +430,19 @@ Implement the missing --features
monitor to see which jobs are currently running
http://code.google.com/p/ppss/
Accept signal INT to complete current running jobs but do not start
new jobs. Print out the number of jobs waiting to complete on
STDERR. Accept sig INT again to kill now. This seems to be hard, as
all foreground processes get the INT from the shell.
Accept signal INT instead of TERM to complete current running jobs but
do not start new jobs. Print out the number of jobs waiting to
complete on STDERR. Accept sig INT again to kill now. This seems to be
hard, as all foreground processes get the INT from the shell.
If there are nomore jobs (STDIN is closed) then make sure to
distribute the arguments evenly if running -X.
Distibute jobs to computers with different speeds/no_of_cpu using ssh
ask the computers how many cpus they have and spawn appropriately
according to -j setting.
according to -j setting. Reuse ssh connection (-M and -S)
http://www.semicomplete.com/blog/geekery/distributed-xargs.html?source=rss20
http://code.google.com/p/ppss/wiki/Manual2
=head2 -S
@ -444,8 +450,13 @@ http://www.semicomplete.com/blog/geekery/distributed-xargs.html?source=rss20
sshlogin is [user@]host or filename with list of sshlogin
What about copying data to/from remote host?
What about copying data to remote host? Have an option that says the
argument is a file that should be copied.
What about copying data from remote host? Have an option that says
the argument is a file that should be copied.
Where will '>' be run? Local or remote?
Parallelize so this can be done:
@ -475,7 +486,7 @@ Copyright (C) 2007-2009 Free Software Foundation, Inc.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
at your option any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
@ -494,7 +505,7 @@ Symbol, IO::File, POSIX, and File::Temp.
=head1 SEE ALSO
B<find>(1), B<xargs>(1)
B<find>(1), B<xargs>(1), '
=cut
@ -504,11 +515,27 @@ use Symbol qw(gensym);
use IO::File;
use POSIX ":sys_wait_h";
use File::Temp qw/ tempfile tempdir /;
use Getopt::Std;
use Getopt::Long;
use strict;
my ($processes,$command);
getopts("0cdfgI:j:kqsuvxX") || die_usage();
# getopts("0cdfgI:j:kqsuvxX") || die_usage();
Getopt::Long::Configure ("bundling","require_order");
GetOptions("debug|d" => \$::opt_d,
"xargs|x" => \$::opt_x,
"X" => \$::opt_X,
"verbose|v" => \$::opt_v,
"silent|s" => \$::opt_s,
"keeporder|k" => \$::opt_k,
"group|g" => \$::opt_g,
"ungroup|u" => \$::opt_u,
"command|c" => \$::opt_c,
"file|f" => \$::opt_f,
"null|0" => \$::opt_0,
"quote|q" => \$::opt_q,
"replace|I=s" => \$::opt_I,
"jobs|j=s" => \$::opt_j) || die_usage();
# Defaults:
$Global::debug = 0;
@ -906,7 +933,8 @@ sub init_run_jobs {
open $Global::original_stderr, ">&STDERR" or die "Can't dup STDERR: $!";
$Global::running_jobs=0;
$SIG{USR1} = \&ListRunningJobs;
$SIG{USR2} = \&StartNoNewJobs;
$Global::original_sigterm = $SIG{TERM};
$SIG{TERM} = \&StartNoNewJobs;
}
sub next_command_line {
@ -1078,7 +1106,12 @@ sub ListRunningJobs {
}
sub StartNoNewJobs {
print STDERR ("parallel: SIGTERM received. No new jobs will be started.\n",
"parallel: Waiting for these ", scalar(keys %Global::running),
" jobs to finish. Send SIGTERM again to stop now.\n");
ListRunningJobs();
$Global::StartNoNewJobs++;
$SIG{TERM} = $Global::original_sigterm;
}
sub CountSigChild {

4
unittest/tests-to-run/test13.sh
View file

@ -5,5 +5,5 @@ ulimit -n 50
(echo "sleep 3; echo begin"; seq 1 30 | parallel -kq echo "sleep 1; echo {}"; echo "echo end") \
| parallel -k -j0
# Test SIGUSR1
(sleep 5; killall parallel -USR1) & seq 1 100 | parallel -k sleep 3';' echo
# Test SIGTERM
(sleep 5; killall parallel -TERM) & seq 1 100 | parallel -k sleep 3';' echo