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Made PRINTER driver use new revive-notify mechanism.

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Still to be tested.
This commit is contained in:
Jorrit Herder 2005-07-27 15:04:30 +00:00
parent fe0dcb5c00
commit f88431f1f7
1 changed files with 29 additions and 0 deletions
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29
drivers/printer/printer.c
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@ -85,6 +85,8 @@
*/
PRIVATE int caller; /* process to tell when printing done (FS) */
PRIVATE int revive_pending; /* set to true if revive is pending */
PRIVATE int revive_status; /* revive status */
PRIVATE int done_status; /* status of last output completion */
PRIVATE int oleft; /* bytes of output left in obuf */
PRIVATE char obuf[128]; /* output buffer */
@ -102,6 +104,7 @@ extern int errno; /* error number */
FORWARD _PROTOTYPE( void do_cancel, (message *m_ptr) );
FORWARD _PROTOTYPE( void output_done, (void) );
FORWARD _PROTOTYPE( void do_write, (message *m_ptr) );
FORWARD _PROTOTYPE( void do_status, (message *m_ptr) );
FORWARD _PROTOTYPE( void prepare_output, (void) );
FORWARD _PROTOTYPE( void do_initialize, (void) );
FORWARD _PROTOTYPE( void reply, (int code,int replyee,int proc,int status));
@ -156,6 +159,7 @@ PUBLIC void main(void)
reply(TASK_REPLY, pr_mess.m_source, pr_mess.PROC_NR, OK);
break;
case DEV_WRITE: do_write(&pr_mess); break;
case DEV_STATUS: do_status(&pr_mess); break;
case CANCEL : do_cancel(&pr_mess); break;
case HARD_INT : do_printer_output(); break;
default:
@ -248,10 +252,34 @@ PRIVATE void output_done()
else { /* done! report back to FS */
status = orig_count;
}
#if DEAD_CODE
reply(REVIVE, caller, proc_nr, status);
writing = FALSE;
#else
revive_pending = TRUE;
revive_status = status;
alert(caller);
#endif
}
/*===========================================================================*
* do_status *
*===========================================================================*/
PRIVATE void do_status(m_ptr)
register message *m_ptr; /* pointer to the newly arrived message */
{
if (revive_pending) {
m_ptr->m_type = DEV_REVIVE; /* build message */
m_ptr->REP_PROC_NR = proc_nr;
m_ptr->REP_STATUS = revive_status;
writing = FALSE; /* unmark event */
revive_pending = FALSE; /* unmark event */
} else {
m_ptr->m_type = DEV_NO_STATUS;
}
send(m_ptr->m_source, m_ptr); /* send the message */
}
/*===========================================================================*
* do_cancel *
@ -268,6 +296,7 @@ register message *m_ptr; /* pointer to the newly arrived message */
if (writing && m_ptr->PROC_NR == proc_nr) {
oleft = 0; /* cancel output by interrupt handler */
writing = FALSE;
revive_pending = FALSE;
}
reply(TASK_REPLY, m_ptr->m_source, m_ptr->PROC_NR, EINTR);
}