mirror of https://github.com/tmux/tmux.git
To replace c0-*, add a high watermark to the pty event, and also backoff
when the any of the ttys the pane is going to write to has buffered enough data.pull/1/head
parent
37ae8a9e0f
commit
3f4ee98162
16
tmux.h
16
tmux.h
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@ -56,6 +56,16 @@ extern char **environ;
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*/
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#define UTF8_SIZE 9
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/*
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* READ_SIZE is the maximum size of data to hold from a pty (the event high
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* watermark). READ_BACKOFF is the amount of data waiting to be output to a tty
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* before pty reads will be backed off. READ_TIME is how long to back off
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* before the next read (in microseconds) if a tty is above READ_BACKOFF.
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*/
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#define READ_SIZE 1024
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#define READ_BACKOFF 512
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#define READ_TIME 100
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/* Fatal errors. */
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#define fatal(msg) log_fatal("%s: %s", __func__, msg);
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#define fatalx(msg) log_fatalx("%s: %s", __func__, msg);
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@ -847,6 +857,7 @@ struct window_pane {
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int fd;
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struct bufferevent *event;
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struct event timer;
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struct input_ctx *ictx;
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@ -1595,8 +1606,9 @@ void tty_draw_line(struct tty *, const struct window_pane *, struct screen *,
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int tty_open(struct tty *, char **);
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void tty_close(struct tty *);
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void tty_free(struct tty *);
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void tty_write(
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void (*)(struct tty *, const struct tty_ctx *), struct tty_ctx *);
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void tty_write(void (*)(struct tty *, const struct tty_ctx *),
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struct tty_ctx *);
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int tty_client_ready(struct client *, struct window_pane *wp);
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void tty_cmd_alignmenttest(struct tty *, const struct tty_ctx *);
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void tty_cmd_cell(struct tty *, const struct tty_ctx *);
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void tty_cmd_clearendofline(struct tty *, const struct tty_ctx *);
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26
tty.c
26
tty.c
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@ -723,9 +723,23 @@ tty_draw_line(struct tty *tty, const struct window_pane *wp,
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tty_update_mode(tty, tty->mode, s);
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}
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int
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tty_client_ready(struct client *c, struct window_pane *wp)
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{
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if (c->session == NULL || c->tty.term == NULL)
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return (0);
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if (c->flags & CLIENT_SUSPENDED)
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return (0);
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if (c->tty.flags & TTY_FREEZE)
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return (0);
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if (c->session->curw->window != wp->window)
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return (0);
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return (1);
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}
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void
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tty_write(
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void (*cmdfn)(struct tty *, const struct tty_ctx *), struct tty_ctx *ctx)
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tty_write(void (*cmdfn)(struct tty *, const struct tty_ctx *),
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struct tty_ctx *ctx)
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{
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struct window_pane *wp = ctx->wp;
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struct client *c;
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@ -740,13 +754,7 @@ tty_write(
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return;
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TAILQ_FOREACH(c, &clients, entry) {
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if (c->session == NULL || c->tty.term == NULL)
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continue;
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if (c->flags & CLIENT_SUSPENDED)
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continue;
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if (c->tty.flags & TTY_FREEZE)
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continue;
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if (c->session->curw->window != wp->window)
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if (!tty_client_ready(c, wp))
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continue;
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ctx->xoff = wp->xoff;
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56
window.c
56
window.c
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@ -58,6 +58,7 @@ u_int next_window_pane_id;
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u_int next_window_id;
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u_int next_active_point;
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void window_pane_timer_callback(int, short, void *);
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void window_pane_read_callback(struct bufferevent *, void *);
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void window_pane_error_callback(struct bufferevent *, short, void *);
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@ -740,6 +741,9 @@ window_pane_destroy(struct window_pane *wp)
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{
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window_pane_reset_mode(wp);
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if (event_initialized(&wp->timer))
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evtimer_del(&wp->timer);
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if (wp->fd != -1) {
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bufferevent_free(wp->event);
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close(wp->fd);
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@ -867,28 +871,53 @@ window_pane_spawn(struct window_pane *wp, int argc, char **argv,
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wp->event = bufferevent_new(wp->fd, window_pane_read_callback, NULL,
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window_pane_error_callback, wp);
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bufferevent_setwatermark(wp->event, EV_READ, 0, READ_SIZE);
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bufferevent_enable(wp->event, EV_READ|EV_WRITE);
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free(cmd);
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return (0);
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}
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void
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window_pane_timer_callback(unused int fd, unused short events, void *data)
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{
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window_pane_read_callback(NULL, data);
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}
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void
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window_pane_read_callback(unused struct bufferevent *bufev, void *data)
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{
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struct window_pane *wp = data;
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char *new_data;
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size_t new_size;
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struct window_pane *wp = data;
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struct evbuffer *evb = wp->event->input;
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char *new_data;
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size_t new_size, available;
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struct client *c;
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struct timeval tv;
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new_size = EVBUFFER_LENGTH(wp->event->input) - wp->pipe_off;
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if (event_initialized(&wp->timer))
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evtimer_del(&wp->timer);
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log_debug("%%%u has %zu bytes", wp->id, EVBUFFER_LENGTH(evb));
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TAILQ_FOREACH(c, &clients, entry) {
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if (!tty_client_ready(c, wp))
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continue;
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available = EVBUFFER_LENGTH(c->tty.event->output);
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if (available > READ_BACKOFF)
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goto start_timer;
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}
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new_size = EVBUFFER_LENGTH(evb) - wp->pipe_off;
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if (wp->pipe_fd != -1 && new_size > 0) {
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new_data = EVBUFFER_DATA(wp->event->input);
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new_data = EVBUFFER_DATA(evb);
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bufferevent_write(wp->pipe_event, new_data, new_size);
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}
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input_parse(wp);
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wp->pipe_off = EVBUFFER_LENGTH(wp->event->input);
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wp->pipe_off = EVBUFFER_LENGTH(evb);
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/*
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* If we get here, we're not outputting anymore, so set the silence
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@ -897,11 +926,22 @@ window_pane_read_callback(unused struct bufferevent *bufev, void *data)
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wp->window->flags |= WINDOW_SILENCE;
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if (gettimeofday(&wp->window->silence_timer, NULL) != 0)
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fatal("gettimeofday failed.");
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return;
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start_timer:
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log_debug("%%%u backing off (%s %zu > %d)", wp->id, c->ttyname,
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available, READ_BACKOFF);
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tv.tv_sec = 0;
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tv.tv_usec = READ_TIME;
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evtimer_set(&wp->timer, window_pane_timer_callback, wp);
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evtimer_add(&wp->timer, &tv);
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}
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void
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window_pane_error_callback(
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unused struct bufferevent *bufev, unused short what, void *data)
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window_pane_error_callback(unused struct bufferevent *bufev, unused short what,
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void *data)
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{
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struct window_pane *wp = data;
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