mirror of
https://github.com/cmusphinx/sphinxtrain.git
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nshmyrev
7c89bb8a64
consistency with modern trends and other ASR frameworks. git-svn-id: svn+ssh://svn.code.sf.net/p/cmusphinx/code/trunk/SphinxTrain@11327 94700074-3cef-4d97-a70e-9c8c206c02f5
133 lines
3.4 KiB
Perl
133 lines
3.4 KiB
Perl
# -*- cperl -*-
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## ====================================================================
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##
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## Copyright (c) 2006 Carnegie Mellon University. All rights
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## reserved.
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##
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## Redistribution and use in source and binary forms, with or without
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## modification, are permitted provided that the following conditions
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## are met:
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##
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## 1. Redistributions of source code must retain the above copyright
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## notice, this list of conditions and the following disclaimer.
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##
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## 2. Redistributions in binary form must reproduce the above copyright
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## notice, this list of conditions and the following disclaimer in
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## the documentation and/or other materials provided with the
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## distribution.
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##
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## This work was supported in part by funding from the Defense Advanced
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## Research Projects Agency and the National Science Foundation of the
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## United States of America, and the CMU Sphinx Speech Consortium.
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##
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## THIS SOFTWARE IS PROVIDED BY CARNEGIE MELLON UNIVERSITY ``AS IS'' AND
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## ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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## THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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## PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY
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## NOR ITS EMPLOYEES BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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##
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## ====================================================================
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##
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## Author: David Huggins-Daines
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##
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use strict;
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package Queue::POSIX;
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use Queue::Job;
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use POSIX qw(_exit setsid);
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sub new {
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my $this = shift;
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my $class = ref $this || $this;
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my $self = {};
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bless $self, $class;
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}
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sub submit_job {
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my $self = shift;
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# Create a job object from arguments (not so elegant really)
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my $job = Queue::Job->new(@_);
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die "Failed to fork: $!" unless defined(my $pid = fork());
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if ($pid) {
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return $pid;
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}
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else {
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# Detach from parent process
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setsid();
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if (defined($job->{outfile})) {
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open STDOUT, ">$job->{outfile}" or die "Failed to open $job->{outfile}: $!";
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}
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if (defined($job->{errfile})) {
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open STDERR, ">$job->{errfile}" or die "Failed to open $job->{errfile}: $!";
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}
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if (defined($job->{deps})) {
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my $alive = @{$job->{deps}};
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while ($alive > 0) {
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$alive = kill(0, @{$job->{deps}});
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sleep(1);
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}
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}
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if (defined($job->{command})) {
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exec @{$job->{command}} or die "Failed to exec: $!";
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}
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elsif (defined($job->{coderef})) {
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my $rv = $job->{coderef}(@{$job->{codeargs}});
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_exit($rv);
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}
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else {
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warn "Invalid Queue::Job object!\n";
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_exit(1);
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}
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}
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}
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sub query_job {
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my ($self, $jobid) = @_;
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kill 0 => $jobid;
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}
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sub waitfor_job {
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my ($self, $jobid) = @_;
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waitpid $jobid, 0;
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}
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sub cancel_job {
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my ($self, $job) = @_;
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kill TERM => $job;
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}
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1;
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__END__
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=head1 NAME
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Queue::POSIX - Simulate a queue using processes on POSIX systems
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=head1 SYNOPSIS
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use Queue::POSIX;
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my $q = Queue::POSIX->new();
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my $id = $q->submit_job($cmd, @args);
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waitfor_job($id);
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cancel_job($id);
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=head1 DESCRIPTION
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=head1 AUTHOR
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David Huggins-Daines <dhuggins@cs.cmu.edu>
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=cut
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