qapi2texi: Fix up output around #optional
[qemu.git] / chardev / char-mux.h
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #ifndef CHAR_MUX_H
25 #define CHAR_MUX_H
26
27 #include "sysemu/char.h"
28
29 extern bool muxes_realized;
30
31 #define MAX_MUX 4
32 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
33 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
34 typedef struct MuxChardev {
35 Chardev parent;
36 CharBackend *backends[MAX_MUX];
37 CharBackend chr;
38 int focus;
39 int mux_cnt;
40 int term_got_escape;
41 int max_size;
42 /* Intermediate input buffer catches escape sequences even if the
43 currently active device is not accepting any input - but only until it
44 is full as well. */
45 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
46 int prod[MAX_MUX];
47 int cons[MAX_MUX];
48 int timestamps;
49
50 /* Protected by the Chardev chr_write_lock. */
51 int linestart;
52 int64_t timestamps_start;
53 } MuxChardev;
54
55 #define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX)
56 #define CHARDEV_IS_MUX(chr) \
57 object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)
58
59 void mux_chr_set_handlers(Chardev *chr, GMainContext *context);
60 void mux_set_focus(Chardev *chr, int focus);
61 void mux_chr_send_event(MuxChardev *d, int mux_nr, int event);
62
63 #endif /* CHAR_MUX_H */