Struct pwner::process::Process

pub struct Process(_, _);

An implementation of Process that uses std::process as the launcher.

All read and write operations are sync.

Note: On *nix platforms, the owned process will have 2 seconds between signals, which is a blocking wait.

Methods

impl Process

pub fn read_from(&mut self, read_source: ReadSource) -> &mut Self

Choose which pipe to read form next.

Examples

Basic usage:

use std::io::Read;
use std::process::Command;
use pwner::Spawner;
use pwner::process::ReadSource;

let mut child = Command::new("ls").spawn_owned().unwrap();
let mut buffer = [0_u8; 1024];
child.read_from(ReadSource::Stdout).read(&mut buffer).unwrap();

pub fn decompose(
    &mut self
) -> (&mut ChildStdin, &mut ChildStdout, &mut ChildStderr)

Decomposes the handle into mutable references to the pipes.

Examples

Basic usage:

use std::io::{ Read, Write };
use std::process::Command;
use pwner::Spawner;

let mut child = Command::new("cat").spawn_owned().unwrap();
let mut buffer = [0_u8; 1024];
let (stdin, stdout, _) = child.decompose();

stdin.write_all(b"hello\n").unwrap();
stdout.read(&mut buffer).unwrap();

Trait Implementations

impl Drop for Process

fn drop(&mut self)

Executes the destructor for this type.

impl Process for Process

#[must_use]fn id(&self) -> u32

Returns the OS-assigned process identifier associated with this child.

Examples

Basic usage:

use std::process::Command;
use pwner::{ Spawner, Process };

let mut command = Command::new("ls");
if let Ok(child) = command.spawn_owned() {
    println!("Child's ID is {}", child.id());
} else {
    println!("ls command didn't start");
}

impl Read for Process

fn read(&mut self, buf: &mut [u8]) -> Result<usize>

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

fn read_vectored(&mut self, bufs: &mut [IoSliceMut]) -> Result<usize, Error>

Like read, except that it reads into a slice of buffers.

unsafe fn initializer(&self) -> Initializer

🔬 This is a nightly-only experimental API. (read_initializer)

Determines if this Reader can work with buffers of uninitialized memory.

fn read_to_end(&mut self, buf: &mut Vec<u8>) -> Result<usize, Error>

Read all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

Read all bytes until EOF in this source, appending them to buf.

fn read_exact(&mut self, buf: &mut [u8]) -> Result<(), Error>

Read the exact number of bytes required to fill buf.

fn by_ref(&mut self) -> &mut Self

Creates a "by reference" adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

Transforms this Read instance to an [Iterator] over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R> where
    R: Read, 

Creates an adaptor which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>

Creates an adaptor which will read at most limit bytes from it.

impl Write for Process

fn write(&mut self, buf: &[u8]) -> Result<usize>

Write a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flush this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_fmt(&mut self, fmt: Arguments) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

Creates a "by reference" adaptor for this instance of Write.