Struct servo::process::ExitStatus1.0.0[][src]

pub struct ExitStatus(ExitStatus);
Expand description

Describes the result of a process after it has terminated.

This struct is used to represent the exit status or other termination of a child process. Child processes are created via the Command struct and their exit status is exposed through the status method, or the wait method of a Child process.

An ExitStatus represents every possible disposition of a process. On Unix this is the wait status. It is not simply an exit status (a value passed to exit).

For proper error reporting of failed processes, print the value of ExitStatus or ExitStatusError using their implementations of Display.

Tuple Fields

0: ExitStatus

Implementations

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

Was termination successful? Returns a Result.

Examples
#![feature(exit_status_error)]
use std::process::Command;

let status = Command::new("ls")
                     .arg("/dev/nonexistent")
                     .status()
                     .expect("ls could not be executed");

println!("ls: {}", status);
status.exit_ok().expect_err("/dev/nonexistent could be listed!");

Was termination successful? Signal termination is not considered a success, and success is defined as a zero exit status.

Examples
use std::process::Command;

let status = Command::new("mkdir")
                     .arg("projects")
                     .status()
                     .expect("failed to execute mkdir");

if status.success() {
    println!("'projects/' directory created");
} else {
    println!("failed to create 'projects/' directory: {}", status);
}

Returns the exit code of the process, if any.

In Unix terms the return value is the exit status: the value passed to exit, if the process finished by calling exit. Note that on Unix the exit status is truncated to 8 bits, and that values that didn’t come from a program’s call to exit may be invented by the runtime system (often, for example, 255, 254, 127 or 126).

On Unix, this will return None if the process was terminated by a signal. ExitStatusExt is an extension trait for extracting any such signal, and other details, from the ExitStatus.

Examples
use std::process::Command;

let status = Command::new("mkdir")
                     .arg("projects")
                     .status()
                     .expect("failed to execute mkdir");

match status.code() {
    Some(code) => println!("Exited with status code: {}", code),
    None       => println!("Process terminated by signal")
}

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Formats the value using the given formatter. Read more

Creates a new ExitStatus or ExitStatusError from the raw underlying integer status value from wait Read more

If the process was terminated by a signal, returns that signal. Read more

If the process was terminated by a signal, says whether it dumped core.

If the process was stopped by a signal, returns that signal. Read more

Whether the process was continued from a stopped status. Read more

Returns the underlying raw wait status. Read more

Performs the conversion.

This method tests for self and other values to be equal, and is used by ==. Read more

This method tests for !=.

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Compare self to key and return true if they are equal.

Compare self to key and return true if they are equal.

Performs the conversion.

Performs the conversion.

Convert

Convert

The alignment of pointer.

The type for initializers.

Initializes a with the given initializer. Read more

Dereferences the given pointer. Read more

Mutably dereferences the given pointer. Read more

Drops the object pointed to by the given pointer. Read more

Should always be Self

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

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

recently added

Uses borrowed data to replace owned data, usually by cloning. Read more

Converts the given value to a String. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.