src/core/job.c

   1 /*
   2  * Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
   3  *
   4  * This program is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU General Public License as
   6  * published by the Free Software Foundation; either version 2 of the
   7  * License, or any later version.
   8  *
   9  * This program is distributed in the hope that it will be useful, but
  10  * WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU General Public License
  15  * along with this program; if not, write to the Free Software
  16  * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  17  */
  18
  19 #include <string.h>
  20 #include <errno.h>
  21 #include <gpxe/job.h>
  22
  23 /** @file
  24  *
  25  * Job control interfaces
  26  *
  27  */
  28
  29 void job_done ( struct job_interface *job, int rc ) {
  30         struct job_interface *dest = job_get_dest ( job );
  31
  32         dest->op->done ( dest, rc );
  33         job_unplug ( job );
  34         job_put ( dest );
  35 }
  36
  37 /****************************************************************************
  38  *
  39  * Helper methods
  40  *
  41  * These functions are designed to be used as methods in the
  42  * job_interface_operations table.
  43  *
  44  */
  45
  46 void ignore_job_start ( struct job_interface *job __unused ) {
  47         /* Nothing to do */
  48 }
  49
  50 void ignore_job_done ( struct job_interface *job __unused, int rc __unused ) {
  51         /* Nothing to do */
  52 }
  53
  54 void ignore_job_kill ( struct job_interface *job __unused ) {
  55         /* Nothing to do */
  56 }
  57
  58 void ignore_job_progress ( struct job_interface *job __unused,
  59                            struct job_progress *progress ) {
  60         memset ( progress, 0, sizeof ( *progress ) );
  61 }
  62
  63 /** Null job control interface operations */
  64 struct job_interface_operations null_job_ops = {
  65         .start          = ignore_job_start,
  66         .done           = ignore_job_done,
  67         .kill           = ignore_job_kill,
  68         .progress       = ignore_job_progress,
  69 };
  70
  71 /**
  72  * Null job control interface
  73  *
  74  * This is the interface to which job control interfaces are connected
  75  * when unplugged.  It will never generate messages, and will silently
  76  * absorb all received messages.
  77  */
  78 struct job_interface null_job = {
  79         .intf = {
  80                 .dest = &null_job.intf,
  81                 .refcnt = NULL,
  82         },
  83         .op = &null_job_ops,
  84 };