I'm a bit new to IPC and forking.
I'm trying to read a series of CDs (for example 12 discs in a collection). I have 3 CD drives. I will fork a child process for each drive. The child will output a file, e.g. "disc1.wav" and then exit.
How can I best have the parent keep track of the number of discs so far read and pass the appropriate value to each child in sequence?
The scenario I fear:
Parent -> child 1, cdrom1 still reading disc1
-> child 2, cdrom2 *finished* reading disc2 -> exit0
-> child 3, cdrom3 still reading disc3
Child 2 exits as above. Next, the parent should fork another read child:
Parent -> child 1, cdrom1 still reading disc1
-> child 2 (done)
-> child 3, cdrom3 still reading disc3
-> child 4, cdrom2 read disc4
The parent should pass the disc number "4" do child 4 so it knows which disc its reading.
Seems tricky! Any tips or tutorial links?
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