diff options
Diffstat (limited to 'server-client.c')
| -rw-r--r-- | server-client.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/server-client.c b/server-client.c index b8ccbeff..059a5c89 100644 --- a/server-client.c +++ b/server-client.c @@ -492,6 +492,50 @@ server_client_check_exit(struct client *c) c->flags &= ~CLIENT_EXIT; } +/* + * Check if the client should backoff. During backoff, data from external + * programs is not written to the terminal. When the existing data drains, the + * client is redrawn. + * + * There are two backoff phases - both the tty and client have backoff flags - + * the first to allow existing data to drain and the latter to ensure backoff + * is disabled until the redraw has finished and prevent the redraw triggering + * another backoff. + */ +void +server_client_check_backoff(struct client *c) +{ + struct tty *tty = &c->tty; + size_t used; + + used = EVBUFFER_LENGTH(tty->event->output); + + /* + * If in the second backoff phase (redrawing), don't check backoff + * until the redraw has completed (or enough of it to drop below the + * backoff threshold). + */ + if (c->flags & CLIENT_BACKOFF) { + if (used > BACKOFF_THRESHOLD) + return; + c->flags &= ~CLIENT_BACKOFF; + return; + } + + /* Once drained, allow data through again and schedule redraw. */ + if (tty->flags & TTY_BACKOFF) { + if (used != 0) + return; + tty->flags &= ~TTY_BACKOFF; + c->flags |= (CLIENT_BACKOFF|CLIENT_REDRAWWINDOW|CLIENT_STATUS); + return; + } + + /* If too much data, start backoff. */ + if (used > BACKOFF_THRESHOLD) + tty->flags |= TTY_BACKOFF; +} + /* Check for client redraws. */ void server_client_check_redraw(struct client *c) @@ -520,6 +564,10 @@ server_client_check_redraw(struct client *c) if (c->flags & CLIENT_REDRAW) { screen_redraw_screen(c, 0, 0); c->flags &= ~(CLIENT_STATUS|CLIENT_BORDERS); + } else if (c->flags & CLIENT_REDRAWWINDOW) { + TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) + screen_redraw_pane(c, wp); + c->flags &= ~CLIENT_REDRAWWINDOW; } else { TAILQ_FOREACH(wp, &c->session->curw->window->panes, entry) { if (wp->flags & PANE_REDRAW) |