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Diffstat (limited to 'chardev/chardev-internal.h')
-rw-r--r-- | chardev/chardev-internal.h | 62 |
1 files changed, 62 insertions, 0 deletions
diff --git a/chardev/chardev-internal.h b/chardev/chardev-internal.h new file mode 100644 index 0000000000..e0264ac349 --- /dev/null +++ b/chardev/chardev-internal.h @@ -0,0 +1,62 @@ +/* + * QEMU Character device internals + * + * Copyright (c) 2003-2008 Fabrice Bellard + * + * Permission is hereby granted, free of charge, to any person obtaining a copy + * of this software and associated documentation files (the "Software"), to deal + * in the Software without restriction, including without limitation the rights + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell + * copies of the Software, and to permit persons to whom the Software is + * furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN + * THE SOFTWARE. + */ +#ifndef CHARDEV_INTERNAL_H +#define CHARDEV_INTERNAL_H + +#include "chardev/char.h" +#include "chardev/char-fe.h" + +#define MAX_MUX 4 +#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */ +#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1) + +typedef struct MuxChardev { + Chardev parent; + CharBackend *backends[MAX_MUX]; + CharBackend chr; + int focus; + int mux_cnt; + int term_got_escape; + int max_size; + /* Intermediate input buffer catches escape sequences even if the + currently active device is not accepting any input - but only until it + is full as well. */ + unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE]; + int prod[MAX_MUX]; + int cons[MAX_MUX]; + int timestamps; + + /* Protected by the Chardev chr_write_lock. */ + int linestart; + int64_t timestamps_start; +} MuxChardev; + +#define MUX_CHARDEV(obj) OBJECT_CHECK(MuxChardev, (obj), TYPE_CHARDEV_MUX) +#define CHARDEV_IS_MUX(chr) \ + object_dynamic_cast(OBJECT(chr), TYPE_CHARDEV_MUX) + +void mux_set_focus(Chardev *chr, int focus); +void mux_chr_send_all_event(Chardev *chr, QEMUChrEvent event); + +#endif /* CHAR_MUX_H */ |