do control return back returning to previous slot/function from where signal generate

[quickNitin]

no i donot want thread to wait. only thing i want is simultaneous reading from fifo or socket and availability of newly read data in gui thread. I think i have been misunderstood here i want thread to wait.
Anyways on my uniprocessore machine one of the thread will wait when other is running.

[wysota]

Anyways on my uniprocessore machine one of the thread will wait when other is running.

But you won't know in what moment will it happen and this can lead to race conditions.

[quickNitin]

agreed to it.