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169 lines (145 loc) 路 4.48 KB
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#[cfg(not(any(
feature = "runtime-actix",
feature = "runtime-async-std",
feature = "runtime-tokio",
)))]
compile_error!(
"one of 'runtime-actix', 'runtime-async-std' or 'runtime-tokio' features must be enabled"
);
#[cfg(any(
all(feature = "runtime-actix", feature = "runtime-async-std"),
all(feature = "runtime-actix", feature = "runtime-tokio"),
all(feature = "runtime-async-std", feature = "runtime-tokio"),
))]
compile_error!(
"only one of 'runtime-actix', 'runtime-async-std' or 'runtime-tokio' features can be enabled"
);
pub use native_tls;
//
// Actix *OR* Tokio
//
#[cfg(all(
not(feature = "runtime-async-std"),
any(feature = "runtime-tokio", feature = "runtime-actix"),
))]
pub use tokio::{
self, fs, io::AsyncRead, io::AsyncReadExt, io::AsyncWrite, io::AsyncWriteExt, net::TcpStream,
task::spawn, task::yield_now, time::delay_for as sleep, time::timeout,
};
#[cfg(all(
unix,
not(feature = "runtime-async-std"),
any(feature = "runtime-tokio", feature = "runtime-actix"),
))]
pub use tokio::net::UnixStream;
//
// tokio
//
#[cfg(all(
feature = "runtime-tokio",
not(any(feature = "runtime-actix", feature = "runtime-async-std",))
))]
#[macro_export]
macro_rules! blocking {
($($expr:tt)*) => {
$crate::tokio::task::block_in_place(move || { $($expr)* })
};
}
#[cfg(all(feature = "tokio-native-tls", not(feature = "async-native-tls")))]
pub use tokio_native_tls::{TlsConnector, TlsStream};
#[cfg(all(feature = "tokio-native-tls", not(feature = "async-native-tls")))]
pub use native_tls::Error as TlsError;
//
// actix
//
#[cfg(feature = "runtime-actix")]
pub use {actix_rt, actix_threadpool};
#[cfg(all(
feature = "runtime-actix",
not(any(feature = "runtime-tokio", feature = "runtime-async-std",))
))]
#[macro_export]
macro_rules! blocking {
($($expr:tt)*) => {
$crate::actix_threadpool::run(move || { $($expr)* }).await.map_err(|err| match err {
$crate::actix_threadpool::BlockingError::Error(e) => e,
$crate::actix_threadpool::BlockingError::Canceled => panic!("{}", err)
})
};
}
//
// async-std
//
#[cfg(all(
feature = "runtime-async-std",
not(any(feature = "runtime-actix", feature = "runtime-tokio",))
))]
pub use async_std::{
self, fs, future::timeout, io::prelude::ReadExt as AsyncReadExt,
io::prelude::WriteExt as AsyncWriteExt, io::Read as AsyncRead, io::Write as AsyncWrite,
net::TcpStream, task::sleep, task::spawn, task::yield_now,
};
#[cfg(all(
feature = "runtime-async-std",
not(any(feature = "runtime-actix", feature = "runtime-tokio",))
))]
#[macro_export]
macro_rules! blocking {
($($expr:tt)*) => {
$crate::async_std::task::spawn_blocking(move || { $($expr)* }).await
};
}
#[cfg(all(
unix,
feature = "runtime-async-std",
not(any(feature = "runtime-actix", feature = "runtime-tokio",))
))]
pub use async_std::os::unix::net::UnixStream;
#[cfg(all(feature = "async-native-tls", not(feature = "tokio-native-tls")))]
pub use async_native_tls::{Error as TlsError, TlsConnector, TlsStream};
#[cfg(all(
feature = "runtime-async-std",
not(any(feature = "runtime-actix", feature = "runtime-tokio"))
))]
pub use async_std::task::block_on;
#[cfg(all(
feature = "runtime-async-std",
not(any(feature = "runtime-actix", feature = "runtime-tokio"))
))]
pub fn enter_runtime<F, R>(f: F) -> R
where
F: FnOnce() -> R,
{
// no-op for async-std
f()
}
#[cfg(all(
any(feature = "runtime-tokio", feature = "runtime-actix"),
not(feature = "runtime-async-std")
))]
pub use tokio_runtime::{block_on, enter_runtime};
#[cfg(any(feature = "runtime-tokio", feature = "runtime-actix"))]
mod tokio_runtime {
use once_cell::sync::Lazy;
use tokio::runtime::{self, Runtime};
// lazily initialize a global runtime once for multiple invocations of the macros
static RUNTIME: Lazy<Runtime> = Lazy::new(|| {
runtime::Builder::new()
// `.basic_scheduler()` requires calling `Runtime::block_on()` which needs mutability
.threaded_scheduler()
.enable_io()
.enable_time()
.build()
.expect("failed to initialize Tokio runtime")
});
#[cfg(any(feature = "runtime-tokio", feature = "runtime-actix"))]
pub fn block_on<F: std::future::Future>(future: F) -> F::Output {
RUNTIME.enter(|| RUNTIME.handle().block_on(future))
}
pub fn enter_runtime<F, R>(f: F) -> R
where
F: FnOnce() -> R,
{
RUNTIME.enter(f)
}
}