- process-fork #!optional THUNK KILLOTHERS?procedure
Creates a new child process with the UNIX system call fork(). Returns either the PID of the child process or 0. If THUNK is given, then the child process calls it as a procedure with no arguments and terminates. If THUNK is given and the optional argument KILLOTHERS? is true, then kill all other existing threads in the child process, leaving only the current thread to run THUNK and terminate.