FIFO线程

Question

I have the application below where thread 1 reads from a file and put to FIFO, then thread 2 reads that FIFO and process the data and send to network socket, thread 3 is receiving data from network socket and then save the result to file2 but sometimes the received data has to be re-processed by thread2, so the question is what's the best thing to do? Do I need to send to FIFO again? or have another fifo between thread 3 and thread 2? or neither ?

File1 --> thread 1 --> FIFO --> thread 2 --> network socket

network socket --> thread 3 --> file2

BTW, the above is a sample of what I have, the actual program will have many threads read from FIFO and send to the network, not sure if using FIFO this way will cause latency or will be a bottleneck.

Appreciate you help.

Answer 1

Ummm,

Is there a particular reason why select system call which will monitor an array of file and socket descriptors is not being used? This could simplify the code as shown here .

Are you using pthreads or something like boost thread library...

Are these threads indeed different processes... or is this all one program where you use pthread_cond_wait() ?