src/core/monojob.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 FILE_LICENCE ( GPL2_OR_LATER );
  20
  21 #include <string.h>
  22 #include <stdio.h>
  23 #include <errno.h>
  24 #include <gpxe/process.h>
  25 #include <console.h>
  26 #include <gpxe/keys.h>
  27 #include <gpxe/job.h>
  28 #include <gpxe/monojob.h>
  29 #include <gpxe/timer.h>
  30
  31 /** @file
  32  *
  33  * Single foreground job
  34  *
  35  */
  36
  37 static int monojob_rc;
  38
  39 static void monojob_done ( struct job_interface *job __unused, int rc ) {
  40         monojob_rc = rc;
  41 }
  42
  43 /** Single foreground job operations */
  44 static struct job_interface_operations monojob_operations = {
  45         .done           = monojob_done,
  46         .kill           = ignore_job_kill,
  47         .progress       = ignore_job_progress,
  48 };
  49
  50 /** Single foreground job */
  51 struct job_interface monojob = {
  52         .intf = {
  53                 .dest = &null_job.intf,
  54                 .refcnt = NULL,
  55         },
  56         .op = &monojob_operations,
  57 };
  58
  59 /**
  60  * Wait for single foreground job to complete
  61  *
  62  * @v string            Job description to display
  63  * @ret rc              Job final status code
  64  */
  65 int monojob_wait ( const char *string ) {
  66         int key;
  67         int rc;
  68         unsigned long last_progress_dot;
  69         unsigned long elapsed;
  70
  71         printf ( "%s.", string );
  72         monojob_rc = -EINPROGRESS;
  73         last_progress_dot = currticks();
  74         while ( monojob_rc == -EINPROGRESS ) {
  75                 step();
  76                 if ( iskey() ) {
  77                         key = getchar();
  78                         switch ( key ) {
  79                         case CTRL_C:
  80                                 job_kill ( &monojob );
  81                                 rc = -ECANCELED;
  82                                 goto done;
  83                         default:
  84                                 break;
  85                         }
  86                 }
  87                 elapsed = ( currticks() - last_progress_dot );
  88                 if ( elapsed >= TICKS_PER_SEC ) {
  89                         printf ( "." );
  90                         last_progress_dot = currticks();
  91                 }
  92         }
  93         rc = monojob_rc;
  94
  95 done:
  96         job_done ( &monojob, rc );
  97         if ( rc ) {
  98                 printf ( " %s\n", strerror ( rc ) );
  99         } else {
 100                 printf ( " ok\n" );
 101         }
 102         return rc;
 103 }