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parallel: Code re-org to remove $Private::variables.

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This commit is contained in:
Ole Tange 2014-08-27 23:29:15 +02:00
parent 53883d3e31
commit 75d055970f
5 changed files with 159 additions and 121 deletions
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4
doc/release_new_version
View file

@ -224,9 +224,9 @@ cc:Tim Cuthbertson <tim3d.junk@gmail.com>,
Ryoichiro Suzuki <ryoichiro.suzuki@gmail.com>,
Jesse Alama <jesse.alama@gmail.com>
Subject: GNU Parallel 20140822 ('Williams') released
Subject: GNU Parallel 20140922 ('Attenborough') released
GNU Parallel 20140822 ('Williams') has been released. It is available for download at: http://ftp.gnu.org/gnu/parallel/
GNU Parallel 20140922 ('Attenborough') has been released. It is available for download at: http://ftp.gnu.org/gnu/parallel/
Haiku of the month:

262
src/parallel
View file

@ -724,13 +724,12 @@ sub get_options_from_array {
sub parse_options {
# Returns: N/A
# Defaults:
$Global::version = 20140823;
$Global::version = 20140826;
$Global::progname = 'parallel';
$Global::infinity = 2**31;
$Global::debug = 0;
$Global::verbose = 0;
$Global::grouped = 1;
$Global::keeporder = 0;
$Global::quoting = 0;
# Read only table with default --rpl values
%Global::replace =
@ -782,7 +781,6 @@ sub parse_options {
$Global::shell = parent_shell($$) || $ENV{'SHELL'} || "/bin/sh";
if(defined $opt::X) { $Global::ContextReplace = 1; }
if(defined $opt::silent) { $Global::verbose = 0; }
if(defined $opt::keeporder) { $Global::keeporder = 1; }
if(defined $opt::group) { $Global::grouped = 1; }
if(defined $opt::u) { $Global::grouped = 0; }
if(defined $opt::0) { $/ = "\0"; }
@ -1803,7 +1801,6 @@ sub init_progress {
sub drain_job_queue {
# Returns: N/A
$Private::first_completed ||= time;
if($opt::progress) {
print $Global::original_stderr init_progress();
}
@ -1876,9 +1873,20 @@ sub toggle_progress {
sub progress {
# Returns:
# list of workers
# header that will fit on the screen
# status message that will fit on the screen
# $workerlist = list of workers
# $header = that will fit on the screen
# $status = message that will fit on the screen
if($opt::bar) {
return ("workerlist" => "", "header" => "", "status" => bar());
}
my $eta = "";
my ($status,$header)=("","");
if($opt::eta) {
my($total, $completed, $left, $pctcomplete, $avgtime, $this_eta) =
compute_eta();
$eta = sprintf("ETA: %ds Left: %d AVG: %.2fs ",
$this_eta, $left, $avgtime);
}
my $termcols = terminal_columns();
my @workers = sort keys %Global::host;
my %sshlogin = map { $_ eq ":" ? ($_=>"local") : ($_=>$_) } @workers;
@ -1891,60 +1899,6 @@ sub progress {
($Global::host{$w}->ncpus() || "-")." / ".
$Global::host{$w}->max_jobs_running()."\n";
}
my $eta = "";
my ($status,$header)=("","");
if($opt::eta or $opt::bar) {
my $completed = 0;
for(@workers) { $completed += $Global::host{$_}->jobs_completed() }
if($completed) {
my $total = $Global::JobQueue->total_jobs();
my $left = $total - $completed;
my $pctcomplete = $completed / $total;
my $timepassed = (time - $Private::first_completed);
my $avgtime = $timepassed / $completed;
$Private::smoothed_avg_time ||= $avgtime;
# Smooth the eta so it does not jump wildly
$Private::smoothed_avg_time = (1 - $pctcomplete) *
$Private::smoothed_avg_time + $pctcomplete * $avgtime;
my $this_eta;
$Private::last_time ||= $timepassed;
if($timepassed != $Private::last_time
or not defined $Private::last_eta) {
$Private::last_time = $timepassed;
$this_eta = $left * $Private::smoothed_avg_time;
$Private::last_eta = $this_eta;
} else {
$this_eta = $Private::last_eta;
}
$eta = sprintf("ETA: %ds Left: %d AVG: %.2fs ", $this_eta, $left, $avgtime);
if($opt::bar) {
my $arg = $Global::newest_job ?
$Global::newest_job->{'commandline'}->replace_placeholders(["\257<\257>"],0,0) : "";
# [\011\013\014] messes up display in the terminal
$arg =~ tr/[\011-\016\033\302-\365]//d;
my $bar_text =
sprintf("%d%% %d:%d=%ds %s",
$pctcomplete*100, $completed, $left, $this_eta, $arg);
my $rev = "\033[7m";
my $reset = "\033[0m";
my $terminal_width = terminal_columns();
my $s = sprintf("%-${terminal_width}s",
substr($bar_text." "x$terminal_width,
0,$terminal_width));
my $width = int($terminal_width * $pctcomplete);
substr($s,$width,0) = $reset;
my $zenity = sprintf("%-${terminal_width}s",
substr("# " . int($this_eta) . " sec $arg",
0,$terminal_width));
$s = "\r" . $zenity . "\r" . $pctcomplete*100 . # Prefix with zenity header
"\r" . $rev . $s . $reset;
$status = $s;
}
}
}
if($opt::bar) {
return ("workerlist" => "", "header" => "", "status" => $status);
}
$status = "x"x($termcols+1);
if(length $status > $termcols) {
# sshlogin1:XX/XX/XX%/XX.Xs sshlogin2:XX/XX/XX%/XX.Xs sshlogin3:XX/XX/XX%/XX.Xs
@ -2060,13 +2014,78 @@ sub progress {
}
{
my $columns;
my ($total,$first_completed,$smoothed_avg_time);
sub compute_eta {
# Calculate important numbers for ETA
# Returns:
# $total = number of jobs in total
# $completed = number of jobs completed
# $left = number of jobs left
# $pctcomplete = percent of jobs completed
# $avgtime = averaged time
# $eta = smoothed eta
$total ||= $Global::JobQueue->total_jobs();
my $completed = 0;
for(values %Global::host) { $completed += $_->jobs_completed() }
my $left = $total - $completed;
if(not $completed) {
return($total, $completed, $left, 0, 0, 0);
}
my $pctcomplete = $completed / $total;
$first_completed ||= time;
my $timepassed = (time - $first_completed);
my $avgtime = $timepassed / $completed;
$smoothed_avg_time ||= $avgtime;
# Smooth the eta so it does not jump wildly
$smoothed_avg_time = (1 - $pctcomplete) * $smoothed_avg_time +
$pctcomplete * $avgtime;
my $eta = int($left * $smoothed_avg_time);
return($total, $completed, $left, $pctcomplete, $avgtime, $eta);
}
}
{
my ($rev,$reset);
sub bar {
# Return:
# $status = bar with eta, completed jobs, arg and pct
$rev ||= "\033[7m";
$reset ||= "\033[0m";
my($total, $completed, $left, $pctcomplete, $avgtime, $eta) =
compute_eta();
my $arg = $Global::newest_job ?
$Global::newest_job->{'commandline'}->replace_placeholders(["\257<\257>"],0,0) : "";
# These chars mess up display in the terminal
$arg =~ tr/[\011-\016\033\302-\365]//d;
my $bar_text =
sprintf("%d%% %d:%d=%ds %s",
$pctcomplete*100, $completed, $left, $eta, $arg);
my $terminal_width = terminal_columns();
my $s = sprintf("%-${terminal_width}s",
substr($bar_text." "x$terminal_width,
0,$terminal_width));
my $width = int($terminal_width * $pctcomplete);
substr($s,$width,0) = $reset;
my $zenity = sprintf("%-${terminal_width}s",
substr("# $eta sec $arg",
0,$terminal_width));
$s = "\r" . $zenity . "\r" . $pctcomplete*100 . # Prefix with zenity header
"\r" . $rev . $s . $reset;
return $s;
}
}
{
my ($columns,$last_column_time);
sub terminal_columns {
# Get the number of columns of the display
# Returns:
# number of columns of the screen
if(not $columns) {
if(not $columns or $last_column_time < time) {
$last_column_time = time;
$columns = $ENV{'COLUMNS'};
if(not $columns) {
my $resize = qx{ resize 2>/dev/null };
@ -2571,52 +2590,15 @@ sub reaper {
# Force printing now if the job failed and we are going to exit
my $print_now = ($opt::halt_on_error and $opt::halt_on_error == 2
and $job->exitstatus());
if($Global::keeporder and not $print_now) {
$Private::print_later{$job->seq()} = $job;
$Private::job_end_sequence ||= 1;
debug("run", "Looking for: $Private::job_end_sequence ",
"Current: ", $job->seq(), "\n");
for(my $j = $Private::print_later{$Private::job_end_sequence};
$j or vec($Global::job_already_run,$Private::job_end_sequence,1);
$Private::job_end_sequence++,
$j = $Private::print_later{$Private::job_end_sequence}) {
debug("run", "Found job end $Private::job_end_sequence");
if($j) {
$j->print();
delete $Private::print_later{$Private::job_end_sequence};
}
}
if($opt::keeporder and not $print_now) {
print_earlier_jobs($job);
} else {
$job->print();
}
if($job->exitstatus()) {
# The jobs had a exit status <> 0, so error
$Global::exitstatus++;
$Global::total_failed++;
if($opt::halt_on_error) {
if($opt::halt_on_error == 1
or
($opt::halt_on_error < 1 and $Global::total_failed > 3
and
$Global::total_failed / $Global::total_started > $opt::halt_on_error)) {
# If halt on error == 1 or --halt 10%
# we should gracefully exit
print $Global::original_stderr
("$Global::progname: Starting no more jobs. ",
"Waiting for ", scalar(keys %Global::running),
" jobs to finish. This job failed:\n",
$job->replaced(),"\n");
$Global::start_no_new_jobs ||= 1;
$Global::halt_on_error_exitstatus = $job->exitstatus();
} elsif($opt::halt_on_error == 2) {
# If halt on error == 2 we should exit immediately
print $Global::original_stderr
("$Global::progname: This job failed:\n",
$job->replaced(),"\n");
exit ($job->exitstatus());
}
}
}
process_failed_job($job);
}
}
my $sshlogin = $job->sshlogin();
$sshlogin->dec_jobs_running();
@ -2629,6 +2611,61 @@ sub reaper {
return $children_reaped;
}
sub process_failed_job {
# The jobs had a exit status <> 0, so error
# Returns: N/A
my $job = shift;
$Global::exitstatus++;
$Global::total_failed++;
if($opt::halt_on_error) {
if($opt::halt_on_error == 1
or
($opt::halt_on_error < 1 and $Global::total_failed > 3
and
$Global::total_failed / $Global::total_started > $opt::halt_on_error)) {
# If halt on error == 1 or --halt 10%
# we should gracefully exit
print $Global::original_stderr
("$Global::progname: Starting no more jobs. ",
"Waiting for ", scalar(keys %Global::running),
" jobs to finish. This job failed:\n",
$job->replaced(),"\n");
$Global::start_no_new_jobs ||= 1;
$Global::halt_on_error_exitstatus = $job->exitstatus();
} elsif($opt::halt_on_error == 2) {
# If halt on error == 2 we should exit immediately
print $Global::original_stderr
("$Global::progname: This job failed:\n",
$job->replaced(),"\n");
exit ($job->exitstatus());
}
}
}
{
my (%print_later,$job_end_sequence);
sub print_earlier_jobs {
# Print jobs completed earlier
# Returns: N/A
my $job = shift;
$print_later{$job->seq()} = $job;
$job_end_sequence ||= 1;
debug("run", "Looking for: $job_end_sequence ",
"Current: ", $job->seq(), "\n");
for(my $j = $print_later{$job_end_sequence};
$j or vec($Global::job_already_run,$job_end_sequence,1);
$job_end_sequence++,
$j = $print_later{$job_end_sequence}) {
debug("run", "Found job end $job_end_sequence");
if($j) {
$j->print();
delete $print_later{$job_end_sequence};
}
}
}
}
sub __USAGE__ {}
sub wait_and_exit {
@ -2879,13 +2916,16 @@ sub undef_as_empty {
return $a ? $a : "";
}
sub hostname {
if(not $Private::hostname) {
my $hostname = `hostname`;
chomp($hostname);
$Private::hostname = $hostname || "nohostname";
{
my $hostname;
sub hostname {
if(not $hostname) {
$hostname = `hostname`;
chomp($hostname);
$hostname ||= "nohostname";
}
return $hostname;
}
return $Private::hostname;
}
sub which {

9
src/parallel.pod
View file

@ -2313,7 +2313,7 @@ To see the difference between file A and file B look at the file
=head1 EXAMPLE: Speeding up fast jobs
Starting a job on the local machine takes around 3 ms. This can be a
Starting a job on the local machine takes around 10 ms. This can be a
big overhead if the job takes very few ms to run. Often you can group
small jobs together using B<-X> which will make the overhead less
significant. Compare the speed of these:
@ -2327,10 +2327,9 @@ B<parallel> to spawn multiple GNU B<parallel>s:
seq -w 0 999999 | parallel -j10 --pipe parallel -j0 touch pict{}.jpg
If B<-j0> normally spawns 506 jobs, then the above will try to spawn
5060 jobs. It is likely that you this way will hit the limit of number
of processes and/or filehandles. Look at 'ulimit -n' and 'ulimit -u'
to raise these limits.
If B<-j0> normally spawns 252 jobs, then the above will try to spawn
2520 jobs. On a normal GNU/Linux system you can spawn 32000 jobs using
this technique with no problems.
=head1 EXAMPLE: Using shell variables

2
testsuite/wanted-results/parallel-install
View file

@ -139,7 +139,7 @@ make[0]: Entering directory `/tmp/parallel-00000000/src'
make install-exec-hook
make[0]: Entering directory `/tmp/parallel-00000000/src'
rm /usr/local/bin/sem || true
ln -s /usr/local/bin/parallel /usr/local/bin/sem
ln -s parallel /usr/local/bin/sem
make[0]: Leaving directory `/tmp/parallel-00000000/src'
pod2html --title "GNU Parallel" ./parallel.pod > ./parallel.htmln \
&& mv ./parallel.htmln ./parallel.html \

3
testsuite/wanted-results/test30
View file

@ -8,7 +8,7 @@ echo '### Test of --eta with no jobs'
Computers / CPU cores / Max jobs to run
1:local / 8 / 1
0
ETA: 0s Left: 0 AVG: 0.00s 0
echo '### Test of --progress'
### Test of --progress
seq 1 10 | stdout parallel --progress "sleep 1; echo {}" | wc -l
@ -29,7 +29,6 @@ Computers / CPU cores / Max jobs to run
1:local / 8 / 1
Computer:jobs running/jobs completed/%of started jobs/Average seconds to complete
local:1/0/100%/0.0s 1 2
echo '### --timeout --onall on remote machines: 2*slept 1, 2 jobs failed'
### --timeout --onall on remote machines: 2*slept 1, 2 jobs failed
parallel -j0 --timeout 6 --onall -S localhost,parallel@parallel-server1 'sleep {}; echo slept {}' ::: 1 8 9 ; echo jobs failed: $?