Thanks, I have applied this but I just rolled server_sessions_count into
format.c instead of having a separate function to use once. It'll be in
GitHub next time it syncs up.
On Fri, Apr 28, 2023 at 08:32:41PM +0200, Magnus Groß wrote:
> This can be useful for example when the user wants to show the total
> number of sessions in the statusline.
>
> Co-authored-by: Magnus Groß <mag...@mggross.com>
> ---
> format.c | 10 ++++++++++
> server.c | 15 +++++++++++++++
> tmux.1 | 1 +
> tmux.h | 1 +
> 4 files changed, 27 insertions(+)
>
> diff --git a/format.c b/format.c
> index 275d5218..e5728327 100644
> --- a/format.c
> +++ b/format.c
> @@ -2077,6 +2077,13 @@ format_cb_scroll_region_upper(struct format_tree *ft)
> return (NULL);
> }
>
> +/* Callback for server_sessions. */
> +static void *
> +format_cb_server_sessions(__unused struct format_tree *ft)
> +{
> + return (format_printf("%u", server_sessions_count()));
> +}
> +
> /* Callback for session_attached. */
> static void *
> format_cb_session_attached(struct format_tree *ft)
> @@ -2980,6 +2987,9 @@ static const struct format_table_entry format_table[] =
> {
> { "scroll_region_upper", FORMAT_TABLE_STRING,
> format_cb_scroll_region_upper
> },
> + { "server_sessions", FORMAT_TABLE_STRING,
> + format_cb_server_sessions
> + },
> { "session_activity", FORMAT_TABLE_TIME,
> format_cb_session_activity
> },
> diff --git a/server.c b/server.c
> index 6fef468b..a0b62a71 100644
> --- a/server.c
> +++ b/server.c
> @@ -555,3 +555,18 @@ server_add_message(const char *fmt, ...)
> free(msg);
> }
> }
> +
> +/* Count number of sessions. */
> +u_int
> +server_sessions_count()
> +{
> + struct session *s;
> + u_int n = 0;
> +
> + n = 0;
> + RB_FOREACH(s, sessions, &sessions) {
> + n++;
> + }
> +
> + return (n);
> +}
> diff --git a/tmux.1 b/tmux.1
> index 92e2915f..7bf2bc4d 100644
> --- a/tmux.1
> +++ b/tmux.1
> @@ -5278,6 +5278,7 @@ The following variables are available, where
> appropriate:
> .It Li "selection_present" Ta "" Ta "1 if selection started in copy mode"
> .It Li "selection_start_x" Ta "" Ta "X position of the start of the
> selection"
> .It Li "selection_start_y" Ta "" Ta "Y position of the start of the
> selection"
> +.It Li "server_sessions" Ta "" Ta "Number of sessions"
> .It Li "session_activity" Ta "" Ta "Time of session last activity"
> .It Li "session_alerts" Ta "" Ta "List of window indexes with alerts"
> .It Li "session_attached" Ta "" Ta "Number of clients session is attached to"
> diff --git a/tmux.h b/tmux.h
> index e2becb1c..1a4a14ee 100644
> --- a/tmux.h
> +++ b/tmux.h
> @@ -2653,6 +2653,7 @@ void server_update_socket(void);
> void server_add_accept(int);
> void printflike(1, 2) server_add_message(const char *, ...);
> int server_create_socket(int, char **);
> +u_int server_sessions_count(void);
>
> /* server-client.c */
> RB_PROTOTYPE(client_windows, client_window, entry, server_client_window_cmp);
> --
> 2.40.1
>
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