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Rather than running status-left, status-right and window title #() with popen

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immediately every redraw, queue them up and run them in the background,
starting each once every status-interval. The actual status line uses the
output from the last run.

This brings several advantages:

- tmux itself may be called from inside #() without causing the server to hang;
- likewise, sleep or similar doesn't cause the server to block;
- commands aren't run excessively often when redrawing;
- commands shared by status-left and status-right, or used multiple times, will
  only be run once.

run-shell and if-shell still use system()/popen() but will be changed over to
use this too later.
This commit is contained in:
Nicholas Marriott
2009-10-10 15:03:01 +00:00
parent 4658c063d5
commit 6bca92db4d
9 changed files with 364 additions and 46 deletions
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37
tmux.h
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@ -563,6 +563,24 @@ struct options {
/* Key list for prefix option. */
ARRAY_DECL(keylist, int);
/* Scheduled job. */
struct job {
char *cmd;
pid_t pid;
struct client *client;
int fd;
struct buffer *out;
void (*callbackfn)(struct job *);
void (*freefn)(void *);
void *data;
RB_ENTRY(job) entry;
};
RB_HEAD(jobs, job);
/* Screen selection. */
struct screen_sel {
int flag;
@ -942,9 +960,10 @@ struct client {
char *cwd;
struct tty tty;
struct timeval status_timer;
struct timeval repeat_timer;
struct timeval status_timer;
struct jobs status_jobs;
struct screen status;
#define CLIENT_TERMINAL 0x1
@ -1179,6 +1198,20 @@ struct options_entry *options_set_data(
struct options *, const char *, void *, void (*)(void *));
void *options_get_data(struct options *, const char *);
/* job.c */
extern struct jobs jobs_tree;
int job_cmp(struct job *, struct job *);
RB_PROTOTYPE(jobs, job, entry, job_cmp);
void job_tree_init(struct jobs *);
void job_tree_free(struct jobs *);
u_int job_tree_size(struct jobs *);
struct job *job_get(struct jobs *, const char *);
struct job *job_add(struct jobs *, struct client *,
const char *, void (*)(struct job *), void (*)(void *), void *);
void job_free(struct job *);
int job_run(struct job *);
void job_kill(struct job *);
/* environ.c */
int environ_cmp(struct environ_entry *, struct environ_entry *);
RB_PROTOTYPE(environ, environ_entry, entry, environ_cmp);
@ -1485,7 +1518,7 @@ void server_clear_identify(struct client *);
/* status.c */
int status_redraw(struct client *);
char *status_replace(struct session *, const char *, time_t);
char *status_replace(struct client *, const char *, time_t);
void printflike2 status_message_set(struct client *, const char *, ...);
void status_message_clear(struct client *);
int status_message_redraw(struct client *);