Timer and alarm in C / Java

[Izek]

Hello,
I would like to use a timer and an alarm function in C or in java. Here is my code, it is giving me an error, if you can then please help me with this
Here is the code

void hd (void)
(
...
function(); ...
)
 
void function()
(
int timeout 30; ...
(void) signal( SIGALRM, sigc ); ...
(void) alarm( timeout ); ...
)
 
static void sigc( int sig )
(       
	(void) fprintf( stderr, "% s:% s - timed out\ n", argv0, url ); exit( 1 );
)

[Messenger]

Even I do have a similar kind of a problem. Look at it before I had dislodged, I try always to a minimum before search. By cons I post because I am not sure to have all understood the operation. What I'd like to know how it will behave the line:

(Void) alarm (timeout);

Located in a sub function of hand but is reminded regularly. When I pass on this question to AC zero timeout each time, but if I pass in the function after the timeout what happens. It will stop the program?

[New ID]

Here is the code that can help you

sigc cntal;
 
void galarm(int numSig) (
  siglongjmp( cntal, 1); / * connection has sigsetjmp () returning a * /
)
 
int hand(void) (
 
  int i;
 
/ * Installation the handler for SIGALRM galarm * /
 
  signal(SIGALRM, galarm); 
 
/ * Processing * /
 
  printf("You have five seconds to enter an integer\ n");
 
/ * Memorization of execution context * /
 
  if (! sigsetjmp(cntal, 1)) ( / * first pass * /
    alarm(5);     / * Set up the timer * /
    scanf("% d", & i); alarm(0);  / * seizure effected, we cancel the timer * /
    printf("OK:% s entered\ n", i);
  )
  else (
    printf("Nothing entered. Bye!\ n");
  )
 
  return(0);

[NetworkeR]

Here are few tips for you
sigtmp (buffer, ...) ---> during the call, saves the execution context in the buffer and returns 0.
sigjmp (buffer, value) ---> connection to sigtmp () corresponding to the buffer passed as parameter. At this time, siftmp () returns the value sent by sigtmop (in the example, 1)
I hope I was clear enough, the jump is triggered when the timer has reached the end of five seconds and the processing function is called salarm.

[New ID]

The functions and alarm signal functions as any Linux systems in particular and embedded on any type of processor?. Because apparently in my case, development on embedded Linux based ARM processor, the functions do nothing. The program is compiled without error or warning on this subject, by cons timeout function does nothing. In clear, even if the timeout elapsed alarm is registered in the program is proceeding normally.