Development of a utility that can execute commands in parallel that are specified in a single command file

[erikbor]

For the fuzzing efforts we'd like to have a utility that can execute commands in parallel/concurrently.

Usage:

$ spawn <timeout in seconds> <number of forks> <command file>

The content of the command file (e.g.: /tmp/cmd.txt) looks like:

command 1
command 2
command 3
command 4
command 5
command 6
command 7
command 8
command 9
command 10
command 11
command 12

We could execute this command file like this:

$ spawn 5 4 /tmp/cmd.txt

The utility would first execute command 1, command 2, command 3, command 4 with a timeout of 5 seconds. Once a command has finished (whether it exited 0 or got terminated because of the timeout) the next command will be executed. At all times we should have a maximum of 4 commands running.

For now it is not important to display the output of the child processes. The output can be sent to /dev/null. It is also not important to check the return code of the child processes.

Btw, this code will eventually be integrated in the Retrace executable.

[jjr840430]

@erikbor It was implemented by #336