what is better pthread() or exec()?

[asnl1987]

I'm going to writing multi-thread/multi-process program. One thread read data from serial port. One thread, send this data to server. And main thread will initialize and monitor these two threads. But I consider to use pthread() or exec() to for my multi-thread/multi-process program.
Can anyone give me some comments? Should I use pthread() or exec()? What is advantage and disadvantage of pthread() and exec().
Thanks in advance.

[Cabhan]

This sounds a bit like a homework question, which are not allowed on this forum.

Multithreaded and multi-process applications work quite differently. In this case, it sounds like a key part of your application is sharing data between the reader part and the sender part. Although there are methods of doing inter-process communication (IPC), sharing data within a single process is generally simpler and more efficient.