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Full Discussion: Help with task daemon
Top Forums Programming Help with task daemon Post 302305405 by james2432 on Wednesday 8th of April 2009 08:38:34 PM
Old 04-08-2009
Code:
while(1){ 
            int rc;
            rc=system("ps ux | awk '/mplayer/ && !/awk/ {print $2}'"); 
          rc = WEXITSTATUS(rc); /* Check if mplayer is running */ 
       if(rc > 0 ){
              printf("i was here");
                 printf(rc); 
              pid = fork(); 
              if(pid>=0){     
                if (pid == 0)  
                 ChildProcess(); 
                else  
                 ParentProcess(); 
                } 
              }

It never gets to "i was here"
i'm trying to get the process ID so I can check if it is running then relaunch it...right now it just doesn't launch anything. and for the daemon part, I am aware that it's not reall daemonesk but I want to be able to stop it
 

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pcastctl(8)						    BSD System Manager's Manual 					       pcastctl(8)

NAME
pcastctl -- Podcast Producer daemons control interface SYNOPSIS
pcastctl status target on|off|start|stop|restart OPTIONS
The available options are as follows: status print status of running daemons target affect agent or server daemon start|stop|restart explicitly start/stop/restart daemon. Note that 'restart' will kill all instances of a given daemon, as will 'stop' if none is specified in the pid file. RETURN VALUES
0 Completed succesfully. 1 Action failed 10 Not run as root. 50 Target not recognized: use 'a', or 's'. 51 Action not recognized: use start|stop|restart 52 Executables not found; may need to reinstall Podcast Producer. 53 Process directory not found; may need to reinstall Mac OS X. 54 Timeout waiting for action to complete. 55 Launchd manipulation failure. FILES
/usr/libexec/podcastproducer/pcastagentd Podcast Producer agent daemon /usr/share/podcastproducer/pcastserverd Podcast Producer server daemon /var/run/pcastagentd.pid Podcast Producer agent process ID /var/run/pcastserverd.pid Podcast Producer server process ID /System/Library/LaunchDaemons/com.apple.pcastagentd.plist Launchd agent daemon control file /System/Library/LaunchDaemons/com.apple.pcastserverd.plist Launchd server daemon control file EXAMPLES
status of Podcast Producer agent daemon $ pcastctl agent status edit launchd configuration to launch server on system startup $ pcastctl server on DIAGNOSTICS
Warning: Warning: ## copies of (pcastagentd|pcastserverd) already running Trying to launch another daemon when one or more already running; will usually succeed, but may cause unpredictable behavior. See also RETURN VALUES, above. ERRORS
Error: failed to launch (executable) Tried to start/restart a give daemon, but failed. Error: process 'executable' not currently running Tried to kill a process which did not exist. SEE ALSO
pcast(1) launchd(8) HISTORY
This program was first introduced in Mac OS X 10.5 "Leopard". It was inspired by xgridctl(8). BUGS
pcastctl(8) uses kill -TERM to allow the daemons a chance to die gracefully; there is currently no way to force a kill -KILL. Bug reports can be sent to bugreport.apple.com Feedback can be sent to podcastproducer@apple.com Mac OS September 29, 2004 Mac OS
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