Struct std::process::ExitStatus
1.0.0 · source · pub struct ExitStatus(/* private fields */);
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
.
§Differences from ExitCode
ExitCode
is intended for terminating the currently running process, via
the Termination
trait, in contrast to ExitStatus
, which represents the
termination of a child process. These APIs are separate due to platform
compatibility differences and their expected usage; it is not generally
possible to exactly reproduce an ExitStatus
from a child for the current
process after the fact.
Implementations§
source§impl ExitStatus
impl ExitStatus
sourcepub fn exit_ok(&self) -> Result<(), ExitStatusError>
🔬This is a nightly-only experimental API. (exit_status_error
#84908)
pub fn exit_ok(&self) -> Result<(), ExitStatusError>
exit_status_error
#84908)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!");
Runsourcepub fn success(&self) -> bool
pub fn success(&self) -> bool
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}");
}
Runsourcepub fn code(&self) -> Option<i32>
pub fn code(&self) -> Option<i32>
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")
}
RunTrait Implementations§
source§impl Clone for ExitStatus
impl Clone for ExitStatus
source§fn clone(&self) -> ExitStatus
fn clone(&self) -> ExitStatus
source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ExitStatus
impl Debug for ExitStatus
1.73.0 · source§impl Default for ExitStatus
impl Default for ExitStatus
The default value is one which indicates successful completion.
source§impl Display for ExitStatus
impl Display for ExitStatus
1.12.0 · source§impl ExitStatusExt for ExitStatus
Available on Windows only.
impl ExitStatusExt for ExitStatus
source§impl ExitStatusExt for ExitStatus
Available on Unix only.
impl ExitStatusExt for ExitStatus
source§fn from_raw(raw: i32) -> Self
fn from_raw(raw: i32) -> Self
ExitStatus
or ExitStatusError
from the raw underlying integer status
value from wait
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