MAINTAINERS: Make section QOM cover hw/core/*bus.c as well
[qemu/armbru.git] / include / chardev / char-mux.h
blob417fe32eedf29b206c4c7a20f8ef2de0ee584c6f
1 /*
2 * QEMU System Emulator
4 * Copyright (c) 2003-2008 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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.
24 #ifndef CHAR_MUX_H
25 #define CHAR_MUX_H
27 #include "chardev/char.h"
28 #include "chardev/char-fe.h"
30 #define MAX_MUX 4
31 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
32 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
33 typedef struct MuxChardev {
34 Chardev parent;
35 CharBackend *backends[MAX_MUX];
36 CharBackend chr;
37 int focus;
38 int mux_cnt;
39 int term_got_escape;
40 int max_size;
41 /* Intermediate input buffer catches escape sequences even if the
42 currently active device is not accepting any input - but only until it
43 is full as well. */
44 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
45 int prod[MAX_MUX];
46 int cons[MAX_MUX];
47 int timestamps;
49 /* Protected by the Chardev chr_write_lock. */
50 int linestart;
51 int64_t timestamps_start;
52 } MuxChardev;
54 #define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX)
55 #define CHARDEV_IS_MUX(chr) \
56 object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX)
58 void mux_set_focus(Chardev *chr, int focus);
59 void mux_chr_send_all_event(Chardev *chr, QEMUChrEvent event);
61 #endif /* CHAR_MUX_H */