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Don't use a bufferevent for the tty, so we can keep better track of what

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is being written and when.

Also a manpage typo fix from jmc@.
This commit is contained in:
nicm
2017-02-10 12:59:18 +00:00
parent c6a3446398
commit d22c15107b
4 changed files with 76 additions and 60 deletions
Download Patch File Download Diff File Expand all files Collapse all files

121
tty.c
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@@ -34,11 +34,6 @@
static int tty_log_fd = -1;
static void tty_init_termios(int, struct termios *, struct bufferevent *);
static void tty_read_callback(struct bufferevent *, void *);
static void tty_error_callback(struct bufferevent *, short, void *);
static int tty_client_ready(struct client *, struct window_pane *);
static void tty_set_italics(struct tty *);
@@ -159,6 +154,38 @@ tty_set_size(struct tty *tty, u_int sx, u_int sy)
return (1);
}
static void
tty_read_callback(__unused int fd, __unused short events, void *data)
{
struct tty *tty = data;
size_t size = EVBUFFER_LENGTH(tty->in);
int nread;
nread = evbuffer_read(tty->in, tty->fd, -1);
if (nread == -1)
return;
log_debug("%s: read %d bytes (already %zu)", tty->path, nread, size);
while (tty_keys_next(tty))
;
}
static void
tty_write_callback(__unused int fd, __unused short events, void *data)
{
struct tty *tty = data;
size_t size = EVBUFFER_LENGTH(tty->out);
int nwrite;
nwrite = evbuffer_write(tty->out, tty->fd);
if (nwrite == -1)
return;
log_debug("%s: wrote %d bytes (of %zu)", tty->path, nwrite, size);
if (EVBUFFER_LENGTH(tty->out) == 0)
event_del(&tty->event_out);
}
int
tty_open(struct tty *tty, char **cause)
{
@@ -169,10 +196,14 @@ tty_open(struct tty *tty, char **cause)
}
tty->flags |= TTY_OPENED;
tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE|TTY_TIMER);
tty->flags &= ~(TTY_NOCURSOR|TTY_FREEZE);
tty->event = bufferevent_new(tty->fd, tty_read_callback, NULL,
tty_error_callback, tty);
event_set(&tty->event_in, tty->fd, EV_PERSIST|EV_READ,
tty_read_callback, tty);
tty->in = evbuffer_new();
event_set(&tty->event_out, tty->fd, EV_WRITE, tty_write_callback, tty);
tty->out = evbuffer_new();
tty_start_tty(tty);
@@ -181,50 +212,26 @@ tty_open(struct tty *tty, char **cause)
return (0);
}
static void
tty_read_callback(__unused struct bufferevent *bufev, void *data)
{
struct tty *tty = data;
while (tty_keys_next(tty))
;
}
static void
tty_error_callback(__unused struct bufferevent *bufev, __unused short what,
__unused void *data)
{
}
static void
tty_init_termios(int fd, struct termios *orig_tio, struct bufferevent *bufev)
{
struct termios tio;
if (fd == -1 || tcgetattr(fd, orig_tio) != 0)
return;
setblocking(fd, 0);
if (bufev != NULL)
bufferevent_enable(bufev, EV_READ|EV_WRITE);
memcpy(&tio, orig_tio, sizeof tio);
tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
tio.c_iflag |= IGNBRK;
tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|
ECHOPRT|ECHOKE|ISIG);
tio.c_cc[VMIN] = 1;
tio.c_cc[VTIME] = 0;
if (tcsetattr(fd, TCSANOW, &tio) == 0)
tcflush(fd, TCIOFLUSH);
}
void
tty_start_tty(struct tty *tty)
{
tty_init_termios(tty->fd, &tty->tio, tty->event);
struct termios tio;
if (tty->fd != -1 && tcgetattr(tty->fd, &tty->tio) == 0) {
setblocking(tty->fd, 0);
event_add(&tty->event_in, NULL);
memcpy(&tio, &tty->tio, sizeof tio);
tio.c_iflag &= ~(IXON|IXOFF|ICRNL|INLCR|IGNCR|IMAXBEL|ISTRIP);
tio.c_iflag |= IGNBRK;
tio.c_oflag &= ~(OPOST|ONLCR|OCRNL|ONLRET);
tio.c_lflag &= ~(IEXTEN|ICANON|ECHO|ECHOE|ECHONL|ECHOCTL|
ECHOPRT|ECHOKE|ISIG);
tio.c_cc[VMIN] = 1;
tio.c_cc[VTIME] = 0;
if (tcsetattr(tty->fd, TCSANOW, &tio) == 0)
tcflush(tty->fd, TCIOFLUSH);
}
tty_putcode(tty, TTYC_SMCUP);
@@ -264,7 +271,8 @@ tty_stop_tty(struct tty *tty)
return;
tty->flags &= ~TTY_STARTED;
bufferevent_disable(tty->event, EV_READ|EV_WRITE);
event_del(&tty->event_in);
event_del(&tty->event_out);
/*
* Be flexible about error handling and try not kill the server just
@@ -318,7 +326,10 @@ tty_close(struct tty *tty)
tty_stop_tty(tty);
if (tty->flags & TTY_OPENED) {
bufferevent_free(tty->event);
evbuffer_free(tty->in);
event_del(&tty->event_in);
evbuffer_free(tty->out);
event_del(&tty->event_out);
tty_term_free(tty->term);
tty_keys_free(tty);
@@ -411,11 +422,13 @@ tty_putcode_ptr2(struct tty *tty, enum tty_code_code code, const void *a,
static void
tty_add(struct tty *tty, const char *buf, size_t len)
{
bufferevent_write(tty->event, buf, len);
log_debug("%s: %.*s", tty->path, (int)len, buf);
evbuffer_add(tty->out, buf, len);
log_debug("%s: %.*s", tty->path, (int)len, (const char *)buf);
if (tty_log_fd != -1)
write(tty_log_fd, buf, len);
if (tty->flags & TTY_STARTED)
event_add(&tty->event_out, NULL);
}
void
@@ -730,7 +743,7 @@ tty_client_ready(struct client *c, struct window_pane *wp)
{
if (c->session == NULL || c->tty.term == NULL)
return (0);
if (c->flags & CLIENT_SUSPENDED)
if (c->flags & (CLIENT_REDRAW|CLIENT_SUSPENDED))
return (0);
if (c->tty.flags & TTY_FREEZE)
return (0);