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https://git.savannah.gnu.org/git/parallel.git
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parallel: Treat STDOUT and STDERR as fd{1} and fd{2}. Find all shell opened file descriptors.
This commit is contained in:
Ole Tange
parent
56e5118535
commit
d3a9292b2a
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@ -217,6 +217,8 @@ New in this release:
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* http://www.brunokim.com.br/blog/?p=18
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* http://timotheepoisot.fr/2013/07/08/parallel/
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* http://www.open-open.com/news/view/371301
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* Bug fixes and man page updates.
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127
src/parallel
127
src/parallel
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@ -33,7 +33,6 @@ use Getopt::Long;
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# Used to ensure code quality
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use strict;
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$SIG{TERM} ||= sub { exit 0; }; # $SIG{TERM} is not set on Mac OS X
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if(not $ENV{SHELL}) {
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# $ENV{SHELL} is sometimes not set on Mac OS X and Windows
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::warning("\$SHELL not set. Using /bin/sh.\n");
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@ -45,9 +44,10 @@ if(not $ENV{HOME}) {
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$ENV{HOME} = "/tmp";
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}
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save_sig_stdin_stdout_stderr();
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save_stdin_stdout_stderr();
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save_original_signal_handler();
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parse_options();
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::debug("Open file descriptors: ".join(" ",keys %Global::fd)."\n");
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my $number_of_args;
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if($Global::max_number_of_args) {
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$number_of_args=$Global::max_number_of_args;
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@ -481,12 +481,12 @@ sub write_record_to_pipe {
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}
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$job->write($header_ref);
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$job->write($record_ref);
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my $fh = $job->stdin();
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close $fh;
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my $stdin_fh = $job->fd(0);
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close $stdin_fh;
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exit(0);
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}
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my $fh = $job->stdin();
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close $fh;
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my $stdin_fh = $job->fd(0);
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close $stdin_fh;
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return 1;
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}
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@ -1007,7 +1007,7 @@ sub open_joblog {
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} else {
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if($opt::joblog eq "-") {
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# Use STDOUT as joblog
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$Global::joblog = $Global::original_stdout
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$Global::joblog = $Global::fd{1};
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} elsif(not open($Global::joblog, ">", $opt::joblog)) {
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# Overwrite the joblog
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::error("Cannot write to --joblog $opt::joblog.\n");
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@ -1254,6 +1254,27 @@ sub shell_unquote {
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sub __FILEHANDLES__ {}
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sub save_stdin_stdout_stderr {
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# Remember the original STDIN, STDOUT and STDERR
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# and file descriptors opened by the shell (e.g. 3>/tmp/foo)
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# Returns: N/A
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# Find file descriptors that are already opened (by the shell)
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for (1..60) {
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# /dev/fd/62 and above are used by bash for <(cmd)
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my $fh;
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if(open($fh,">&=$_")) {
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$Global::fd{$_}=$fh;
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}
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}
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open $Global::original_stderr, ">&", "STDERR" or
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::die_bug("Can't dup STDERR: $!");
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open $Global::original_stdin, "<&", "STDIN" or
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::die_bug("Can't dup STDIN: $!");
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$Global::fd{0} = $Global::original_stdin;
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}
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sub enough_file_handles {
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# check that we have enough filehandles available for starting
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# another job
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@ -1308,19 +1329,6 @@ sub __RUNNING_THE_JOBS_AND_PRINTING_PROGRESS__ {}
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# $Global::total_running = total number of running jobs
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# $Global::total_started = total jobs started
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sub save_sig_stdin_stdout_stderr {
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# Remember the original signal handler, STDIN, STDOUT and STDERR
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# Returns: N/A
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%Global::original_sig = %SIG;
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$SIG{TERM} = sub {}; # Dummy until jobs really start
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open $Global::original_stdout, ">&", "STDOUT" or
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::die_bug("Can't dup STDOUT: $!");
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open $Global::original_stderr, ">&", "STDERR" or
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::die_bug("Can't dup STDERR: $!");
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open $Global::original_stdin, "<&", "STDIN" or
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::die_bug("Can't dup STDIN: $!");
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}
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sub init_run_jobs {
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$Global::total_running = 0;
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$Global::total_started = 0;
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@ -1468,8 +1476,8 @@ sub drain_job_queue {
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if($opt::pipe) {
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# When using --pipe sometimes file handles are not closed properly
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for my $job (values %Global::running) {
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my $fh = $job->stdin();
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close $fh;
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my $stdin_fh = $job->fd(0);
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close $stdin_fh;
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}
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}
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if($opt::progress) {
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@ -1865,6 +1873,14 @@ sub cleanup_basefile {
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sub __SIGNAL_HANDLING__ {}
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sub save_original_signal_handler {
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# Remember the original signal handler
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# Returns: N/A
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$SIG{TERM} ||= sub { exit 0; }; # $SIG{TERM} is not set on Mac OS X
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%Global::original_sig = %SIG;
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$SIG{TERM} = sub {}; # Dummy until jobs really start
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}
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sub list_running_jobs {
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# Returns: N/A
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for my $v (values %Global::running) {
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@ -2256,8 +2272,10 @@ sub debug {
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# Returns: N/A
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$Global::debug or return;
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@_ = grep { defined $_ ? $_ : "" } @_;
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if($Global::original_stdout) {
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print $Global::original_stdout @_;
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if($Global::fd{1}) {
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# Original stdout was saved
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my $stdout = $Global::fd{1};
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print $stdout @_;
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} else {
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print @_;
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}
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@ -3587,18 +3605,22 @@ sub openresultsfile {
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}
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open OUT, '>&', $outfh or ::die_bug("Can't redirect STDOUT: $!");
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open ERR, '>&', $errfh or ::die_bug("Can't dup STDOUT: $!");
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$self->set_stdout($outfh);
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$self->set_stderr($errfh);
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$self->set_fd(1,$outfh);
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$self->set_fd(2,$errfh);
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}
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sub set_stdout {
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sub set_fd {
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# Set file descriptor
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my $self = shift;
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$self->{'stdout'} = shift;
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my $fd_no = shift;
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$self->{'fd'}{$fd_no} = shift;
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}
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sub stdout {
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sub fd {
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# Get file descriptor
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my $self = shift;
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return $self->{'stdout'};
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my $fd_no = shift;
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return $self->{'fd'}{$fd_no};
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}
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sub set_stdoutfilename {
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@ -3611,32 +3633,11 @@ sub stdoutfilename {
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return $self->{'stdoutfilename'};
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}
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sub stderr {
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my $self = shift;
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return $self->{'stderr'};
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}
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sub set_stderr {
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my $self = shift;
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$self->{'stderr'} = shift;
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}
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sub stdin {
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my $self = shift;
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return $self->{'stdin'};
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}
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sub set_stdin {
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my $self = shift;
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my $stdin = shift;
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$self->{'stdin'} = $stdin;
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}
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sub write {
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my $self = shift;
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my $remaining_ref = shift;
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my $in = $self->{'stdin'};
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syswrite($in,$$remaining_ref);
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my $stdin_fh = $self->fd(0);
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syswrite($stdin_fh,$$remaining_ref);
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}
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sub virgin {
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@ -3676,7 +3677,7 @@ sub runtime {
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# Returns:
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# Run time in seconds
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my $self = shift;
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return int(($self->endtime() - $self->starttime())*1000)/1000;
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return sprintf("%.3f",int(($self->endtime() - $self->starttime())*1000)/1000);
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}
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sub endtime {
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@ -4159,8 +4160,8 @@ sub start {
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open OUT, '>&', $outfh or ::die_bug("Can't redirect STDOUT: $!");
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open ERR, '>&', $errfh or ::die_bug("Can't dup STDOUT: $!");
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$job->set_stdout($outfh);
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$job->set_stderr($errfh);
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$job->set_fd(1,$outfh);
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$job->set_fd(2,$errfh);
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} else {
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(*OUT,*ERR)=(*STDOUT,*STDERR);
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}
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@ -4181,7 +4182,7 @@ sub start {
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::debug("$Global::total_running processes. Starting ("
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. $job->seq() . "): $command\n");
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if($opt::pipe) {
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my ($in);
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my ($stdin_fh);
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# Wrap command with end-of-file detector,
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# so we do not spawn a program if there is no input.
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# Exit value:
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@ -4198,11 +4199,11 @@ sub start {
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"($command);";
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# The eval is needed to catch exception from open3
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eval {
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$pid = ::open3($in, ">&OUT", ">&ERR", $ENV{SHELL}, "-c", $command) ||
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$pid = ::open3($stdin_fh, ">&OUT", ">&ERR", $ENV{SHELL}, "-c", $command) ||
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::die_bug("open3-pipe");
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1;
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};
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$job->set_stdin($in);
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$job->set_fd(0,$stdin_fh);
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} elsif(@opt::a and not $Global::stdin_in_opt_a and $job->seq() == 1
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and $job->sshlogin()->string() eq ":") {
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# Give STDIN to the first job if using -a (but only if running
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@ -4215,7 +4216,7 @@ sub start {
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1;
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};
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# Re-open to avoid complaining
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open STDIN, "<&", $Global::original_stdin
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open(STDIN, "<&", $Global::original_stdin)
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or ::die_bug("dup-\$Global::original_stdin: $!");
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} elsif ($opt::tty and not $Global::tty_taken and -c "/dev/tty" and
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open(my $devtty_fh, "<", "/dev/tty")) {
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@ -4316,8 +4317,8 @@ sub print {
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}
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# Only relevant for grouping
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$Global::grouped or return;
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my $out = $self->stdout();
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my $err = $self->stderr();
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my $out = $self->fd(1);
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my $err = $self->fd(2);
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my $command = $self->sshlogin_wrap();
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if($Global::joblog) {
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