kaguya
db352f7ef4
We have added POSIX signals to KirkOS It is very much experimental Alongside, we have PCI support fully, and we have imported sbase coreutils, I'm not too sure if all of them work, likely not, but a good few should be okay. Signed-off-by: kaguya <kaguya3311@national.shitposting.agency>
46 lines
2.0 KiB
C
46 lines
2.0 KiB
C
#pragma once
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#include <stdint.h>
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#include <stdbool.h>
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#include <stddef.h>
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#include "termios.h"
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#include "mp/spinlock.h"
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#include "libk/resource.h"
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#include "libk/event.h"
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#define LINE_BUF_SZ 4096
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struct console {
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struct resource res;
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struct termios term;
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size_t width, height;
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bool decckm;
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/* ── job control ─────────────────────────────────────────────────── */
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int64_t fg_pgrp; /* foreground process group; 0 = none */
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int64_t session; /* owning session; 0 = none */
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/* ── line-discipline assembly buffer ─────────────────────────────── */
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char line_buf[LINE_BUF_SZ];
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size_t line_len; /* bytes currently in line_buf */
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size_t line_read_off; /* drain offset (for partial reads) */
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bool line_ready; /* true when a delimiter has landed */
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bool lnext_pending; /* VLNEXT: next byte taken literally */
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/* ── concurrent-reader serialization ─────────────────────────────── */
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/* Separate from res.lock so we can hold it across the blocking
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* input_read() without holding res.lock. Serializes the line-assembly
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* loop in console_read across multiple concurrent readers (e.g. parent
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* + child after fork) so their bytes can't interleave on line_buf.
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*
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* Sleep-mutex serializing the line-assembly loop across concurrent
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* readers. We hold this across the blocking input_read() — so it MUST
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* be a sleep-mutex, not a spinlock (a spinlock held while the holder
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* sleeps in event_await would deadlock the second reader). Built on
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* top of the existing event primitive. */
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spinlock_t read_mutex_lock; /* short-held; protects the two fields below */
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bool read_mutex_held;
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struct event read_mutex_released;
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};
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void console_init(void);
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