Miscellany

#!/usr/bin/php<?phpdefine('TIMEOUT', 1000);define('VARKEY', 1337);define('SEMKEY', 1);define('MSGKEY', 2);define('MSG_UP', 1);define('MSG_DOWN',2);define('MSG_MAXSIZE',sizeof('1345678901234567890'));$shm_key 	= ftok(dirname(__FILE__),'a'); 		//get our shm_key$sem_id		= sem_get(SEMKEY);			//get our semaphore ID$shm_id		= shm_attach($sem_id, TIMEOUT);		//get the id for the SHM block$msg_queue	= msg_get_queue( MSGKEY,0600);		//get our message queue							echo "got it, initializing.\n";sem_acquire($sem_id);shm_put_var($shm_id, VARKEY, 'null');sem_release($sem_id);sleep(10);echo "nice nap.  starting loop\n";for ($i = 0; $i < 50 ; $i++){	echo "aquireing semaphore... ";	echo sem_acquire($sem_id). "\n";		echo "put is: ";	echo shm_put_var($shm_id,VARKEY, $i);	echo ", value $i\n";		echo "releasing semaphore... ";	echo sem_release($sem_id). "\n";		echo "sending message... ";		msg_send($msg_queue,MSG_UP,'Updated');	echo "sleeping for 2 seconds... \n";//	sleep(1);}echo "sending die mesg\n";msg_send($msg_queue,MSG_DOWN,'shut it down');echo "detaching from shm and sleeping 10 seconds";echo "removing semaphore... ";echo sem_remove($sem_id)."\n";echo "removing shm... ";echo shm_remove($shm_id);//todo close out the message queue... oops.?>