Crate unix_exec_piper

Structs

BasicCmd

A basic command is a parsed form of for example

BasicCmdBuilder

Builder for BasicCmd.

CmdChain

A command chain is the unit that gets executed. It’s basically a parsed form of:

CmdChainBuilder

Builder for CmdChain.

Pipe

Abstraction over UNIX pipe for the specific case here with stdin/stdout redirection between processes. The typical flow is that a Pipe is created, the program is forked and that one process marks it’s part of the Pipe as READ while the other process marks it’s part of the Pipe as WRITE.

ProcessState

Process state. Describes the state of the child processes created per invocation of execute_piped_cmd_chain().

Traits

Builder

Common trait for the two builders.

Functions

execute_piped_cmd_chain

Runs a command chain. The parent process creates n childs and connects them (stdout => stdin) together via pipes.

update_process_states

Updates the process state values if the pid is done running. Returns true if all pids are finished, otherwise false.