135 lines
3.2 KiB
C
135 lines
3.2 KiB
C
/*
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* Copyright (C) 2007 Michael Brown <mbrown@fensystems.co.uk>.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation; either version 2 of the
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* License, or any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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FILE_LICENCE ( GPL2_OR_LATER );
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#include <string.h>
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#include <stdio.h>
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#include <errno.h>
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#include <ipxe/process.h>
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#include <ipxe/console.h>
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#include <ipxe/keys.h>
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#include <ipxe/job.h>
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#include <ipxe/monojob.h>
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#include <ipxe/timer.h>
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/** @file
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*
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* Single foreground job
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*
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*/
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static int monojob_rc;
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static void monojob_close ( struct interface *intf, int rc ) {
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monojob_rc = rc;
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intf_restart ( intf, rc );
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}
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static struct interface_operation monojob_intf_op[] = {
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INTF_OP ( intf_close, struct interface *, monojob_close ),
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};
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static struct interface_descriptor monojob_intf_desc =
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INTF_DESC_PURE ( monojob_intf_op );
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struct interface monojob = INTF_INIT ( monojob_intf_desc );
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/**
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* Wait for single foreground job to complete
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*
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* @v string Job description to display, or NULL to be silent
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* @ret rc Job final status code
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*/
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int monojob_wait ( const char *string ) {
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struct job_progress progress;
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int key;
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int rc;
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unsigned long last_keycheck;
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unsigned long last_progress;
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unsigned long now;
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unsigned long elapsed;
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unsigned long completed;
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unsigned long total;
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unsigned int percentage;
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int shown_percentage = 0;
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if ( string )
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printf ( "%s...", string );
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monojob_rc = -EINPROGRESS;
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last_keycheck = last_progress = currticks();
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while ( monojob_rc == -EINPROGRESS ) {
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/* Allow job to progress */
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step();
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now = currticks();
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/* Check for keypresses. This can be time-consuming,
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* so check only once per clock tick.
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*/
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if ( now != last_keycheck ) {
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if ( iskey() ) {
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key = getchar();
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switch ( key ) {
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case CTRL_C:
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monojob_close ( &monojob, -ECANCELED );
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break;
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default:
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break;
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}
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}
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last_keycheck = now;
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}
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/* Display progress, if applicable */
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elapsed = ( now - last_progress );
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if ( string && ( elapsed >= TICKS_PER_SEC ) ) {
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if ( shown_percentage )
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printf ( "\b\b\b\b \b\b\b\b" );
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job_progress ( &monojob, &progress );
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/* Normalise progress figures to avoid overflow */
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completed = ( progress.completed / 128 );
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total = ( progress.total / 128 );
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if ( total ) {
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percentage = ( ( 100 * completed ) / total );
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printf ( "%3d%%", percentage );
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shown_percentage = 1;
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} else {
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printf ( "." );
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shown_percentage = 0;
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}
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last_progress = now;
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}
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}
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rc = monojob_rc;
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if ( shown_percentage )
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printf ( "\b\b\b\b \b\b\b\b" );
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if ( string ) {
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if ( rc ) {
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printf ( " %s\n", strerror ( rc ) );
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} else {
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printf ( " ok\n" );
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}
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}
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return rc;
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}
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