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src/parallel: Small disk full optimization.

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src/parallel.pod: --tollef elaboration (Thanks to Robin Neatherway).
This commit is contained in:
Ole Tange 2014-09-18 22:09:20 +02:00
parent 30ed40ee3f
commit eaedef9937
3 changed files with 27 additions and 17 deletions
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4
doc/release_new_version
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@ -240,8 +240,12 @@ New in this release:
* OCRmyPDF uses GNU Parallel https://github.com/fritz-hh/OCRmyPDF/
* GNU Parallel was presented at Balti and Bioinformatics "On-Air" http://youtu.be/UtXlr19xTh8?t=2h5m0s
* GNU Parallel (Sebuah Uji Coba) http://pr4ka5a.wordpress.com/2014/09/04/gnu-parallel-sebuah-uji-coba/
* GNU Parallel: 并行执行Linux命令 http://blog.csdn.net/xzz_hust/article/details/39183837
* Bug fixes and man page updates.
GNU Parallel - For people who live life in the parallel lane.

6
src/parallel
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@ -724,7 +724,7 @@ sub get_options_from_array {
sub parse_options {
# Returns: N/A
# Defaults:
$Global::version = 20140827;
$Global::version = 20140914;
$Global::progname = 'parallel';
$Global::infinity = 2**31;
$Global::debug = 0;
@ -5998,7 +5998,6 @@ sub set_exitsignal {
unlink $name;
$b8193 = "x"x8193;
}
my $pos = tell $disk_full_fh;
# Linux does not discover if a disk is full if writing <= 8192
# Tested on:
# bfs btrfs cramfs ext2 ext3 ext4 ext4dev jffs2 jfs minix msdos
@ -6018,12 +6017,13 @@ sub set_exitsignal {
print $disk_full_fh $b8193;
if(not $disk_full_fh
or
tell $disk_full_fh == $pos) {
tell $disk_full_fh == 0) {
::error("Output is incomplete. Cannot append to buffer file in $ENV{'TMPDIR'}. Is the disk full?\n");
::error("Change \$TMPDIR with --tmpdir or use --compress.\n");
::wait_and_exit(255);
}
truncate $disk_full_fh, 0;
seek($disk_full_fh, 0, 0) || die;
}
}

34
src/parallel.pod
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@ -647,9 +647,9 @@ infinite loop. This will likely be fixed in a later release.
=item B<--gnu>
Behave like GNU B<parallel>. If B<--tollef> and B<--gnu> are both set,
B<--gnu> takes precedence. B<--tollef> is retired, but B<--gnu> is
kept for compatibility.
Behave like GNU B<parallel>. This option historically took precedence
over B<--tollef>. The B<--tollef> option is now retired, and therefore
may not be used. B<--gnu> is kept for compatibility.
=item B<--group>
@ -3215,20 +3215,26 @@ must be one argument.
=head1 DEFAULT PROFILE (CONFIG FILE)
The file ~/.parallel/config (formerly known as .parallelrc) will be
read if it exists. Lines starting with '#' will be ignored. It can be
formatted like the environment variable $PARALLEL, but it is often
easier to simply put each option on its own line.
The global configuration file /etc/parallel/config, followed by user
configuration file ~/.parallel/config (formerly known as .parallelrc)
will be read in turn if they exist. Lines starting with '#' will be
ignored. The format can follow that of the environment variable
$PARALLEL, but it is often easier to simply put each option on its own
line.
Options on the command line takes precedence over the environment
variable $PARALLEL which takes precedence over the file
~/.parallel/config.
Options on the command line take precedence, followed by the
environment variable $PARALLEL, user configuration file
~/.parallel/config, and finally the global configuration file
/etc/parallel/config.
Note that no file that is read for options, nor the environment
variable $PARALLEL, may contain retired options such as B<--tollef>.
=head1 PROFILE FILES
If B<--profile> set, GNU B<parallel> will read the profile from that file instead of
~/.parallel/config. You can have multiple B<--profiles>.
If B<--profile> set, GNU B<parallel> will read the profile from that
file rather than the global or user configuration files. You can have
multiple B<--profiles>.
Example: Profile for running a command on every sshlogin in
~/.ssh/sshlogins and prepend the output with the sshlogin:
@ -3425,7 +3431,7 @@ supports (See REPORTING BUGS).
=head2 DIFFERENCES BETWEEN xargs AND GNU Parallel
B<xargs> offer some of the same possibilities as GNU B<parallel>.
B<xargs> offers some of the same possibilities as GNU B<parallel>.
B<xargs> deals badly with special characters (such as space, ' and
"). To see the problem try this:
@ -3948,7 +3954,7 @@ B<ladon> deals badly with filenames containing " and newline, and it fails for o
=head3 EXAMPLES FROM ladon MANUAL
It is assumed that the '--rpl's above are put in B<~/.parallel/config>
and that it is run under a shell that support '**' globbing (such as B<zsh>):
and that it is run under a shell that supports '**' globbing (such as B<zsh>):
B<1> ladon "**/*.txt" -- echo RELPATH