Re: [LIP] check instance of a running application

Binand Sethumadhavan wrote:
> On Wed, Dec 24, 2003 at 04:45:43AM -0800, Ram wrote:
> 
>>For checking whether app is still running , I tried by
>> writing the  PID value to a file and later checked
>>whether it exists or not. is there any other way to do
>>this....
> 
> 
> Your method is fine. On startup, log the PID in a file somewhere. To
> check if the application is running or not, use kill().

Rather than writing pid file, you can attach to a shared memory segment and 
write ID of that segment to file. That way the information can be passed between 
instances even if one instance died much before start of next instance..

  Just another approach..

  Shridhar


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