flock("test.pid", LOCK_EX | LOCK_NB)

[swhite]

Hi

Is it possible to use the flock() function on a file to obtain an exclusive lock? Something like the following:

Code: Select all

flock("test.pid", LOCK_EX | LOCK_NB)

I understand it is advisory but it would tell me if some process had applied a lock and then I could take the appropriate action.

Thanks,
Simon