rust/src/libcore/task/spawn_error.rs

62 lines
1.6 KiB
Rust

// Copyright 2018 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![unstable(feature = "futures_api",
reason = "futures in libcore are unstable",
issue = "50547")]
use fmt;
use mem;
use super::{TaskObj, LocalTaskObj};
/// Provides the reason that an executor was unable to spawn.
pub struct SpawnErrorKind {
_hidden: (),
}
impl fmt::Debug for SpawnErrorKind {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
f.debug_tuple("SpawnErrorKind")
.field(&"shutdown")
.finish()
}
}
impl SpawnErrorKind {
/// Spawning is failing because the executor has been shut down.
pub fn shutdown() -> SpawnErrorKind {
SpawnErrorKind { _hidden: () }
}
/// Check whether this error is the `shutdown` error.
pub fn is_shutdown(&self) -> bool {
true
}
}
/// The result of a failed spawn
#[derive(Debug)]
pub struct SpawnObjError {
/// The kind of error
pub kind: SpawnErrorKind,
/// The task for which spawning was attempted
pub task: TaskObj,
}
/// The result of a failed spawn
#[derive(Debug)]
pub struct SpawnLocalObjError {
/// The kind of error
pub kind: SpawnErrorKind,
/// The task for which spawning was attempted
pub task: LocalTaskObj,
}