source: mainline/uspace/app/top/screen.h

Last change on this file was 87822ce, checked in by Jiri Svoboda <jiri@…>, 4 years ago

Avoid infinite loop when console communication is broken

Need to make sure callers of console_get_event_timeout() can distinguish
between timeout and I/O error. Fix all callers of console_get_event()
and console_get_event_timeout() not to enter infinite loop when console
connection is broken. Also avoid setting of errno variable.

  • Property mode set to 100644
File size: 1.9 KB
RevLine 
[5c058d50]1/*
[dec16a2]2 * Copyright (c) 2010 Stanislav Kozina
3 * Copyright (c) 2010 Martin Decky
[5c058d50]4 * All rights reserved.
5 *
6 * Redistribution and use in source and binary forms, with or without
7 * modification, are permitted provided that the following conditions
8 * are met:
9 *
10 * - Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * - Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
15 * - The name of the author may not be used to endorse or promote products
16 * derived from this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
19 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
20 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
21 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
22 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
23 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
24 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
25 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
26 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
27 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28 */
29
30/** @addtogroup top
31 * @{
32 */
33
34#ifndef TOP_SCREEN_H_
35#define TOP_SCREEN_H_
36
[87822ce]37#include <errno.h>
[79ae36dd]38#include <io/console.h>
[aa492fe]39#include <io/verify.h>
[79edc36]40#include "top.h"
[5c058d50]41
[79ae36dd]42extern console_ctrl_t *console;
43
[5c058d50]44extern void screen_init(void);
[dec16a2]45extern void screen_done(void);
46extern void print_data(data_t *);
[aa492fe]47extern void show_warning(const char *, ...)
[09d13c8e]48 _HELENOS_PRINTF_ATTRIBUTE(1, 2);
[8b2aba5]49
[87822ce]50extern errno_t tgetchar(sec_t, int *);
[79ae36dd]51
[5c058d50]52#endif
53
54/**
55 * @}
56 */
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