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implement a startup monitor, move code to src/startup.c

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This commit is contained in:
Michael Stapelberg
2011-10-10 11:36:21 +01:00
parent 198f16ece9
commit f4f4d782bb
6 changed files with 138 additions and 64 deletions
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52
src/util.c
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@ -61,58 +61,6 @@ bool update_if_necessary(uint32_t *destination, const uint32_t new_value) {
return ((*destination = new_value) != old_value);
}
/*
* Starts the given application by passing it through a shell. We use double fork
* to avoid zombie processes. As the started application’s parent exits (immediately),
* the application is reparented to init (process-id 1), which correctly handles
* childs, so we don’t have to do it :-).
*
* The shell is determined by looking for the SHELL environment variable. If it
* does not exist, /bin/sh is used.
*
*/
void start_application(const char *command) {
/* Create a startup notification context to monitor the progress of this
* startup. */
SnLauncherContext *context;
context = sn_launcher_context_new(sndisplay, conn_screen);
sn_launcher_context_set_name(context, "i3");
sn_launcher_context_set_description(context, "exec command in i3");
/* Chop off everything starting from the first space (if there are any
* spaces in the command), since we don’t want the parameters. */
char *first_word = sstrdup(command);
char *space = strchr(first_word, ' ');
if (space)
*space = '\0';
sn_launcher_context_initiate(context, "i3", first_word, last_timestamp);
free(first_word);
LOG("startup id = %s\n", sn_launcher_context_get_startup_id(context));
LOG("executing: %s\n", command);
if (fork() == 0) {
/* Child process */
setsid();
if (fork() == 0) {
/* Setup the environment variable(s) */
sn_launcher_context_setup_child_process(context);
/* Stores the path of the shell */
static const char *shell = NULL;
if (shell == NULL)
if ((shell = getenv("SHELL")) == NULL)
shell = "/bin/sh";
/* This is the child */
execl(shell, shell, "-c", command, (void*)NULL);
/* not reached */
}
exit(0);
}
wait(0);
}
/*
* exec()s an i3 utility, for example the config file migration script or
* i3-nagbar. This function first searches $PATH for the given utility named,