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Remove crossbeam-channel 

The standard library's std::sync::mpsc basically is a crossbeam channel,
and for the use case here will definitely suffice. This drops this
dependency from librustc_driver.
This commit is contained in:
Mark Rousskov 2024-01-07 19:13:04 -05:00
parent 75c68cfd2b
commit be0293f468
3 changed files with 8 additions and 10 deletions
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1
Cargo.lock
View File

@ -3797,7 +3797,6 @@ dependencies = [
name = "rustc_expand"
version = "0.0.0"
dependencies = [
"crossbeam-channel",
"rustc_ast",
"rustc_ast_passes",
"rustc_ast_pretty",

1
compiler/rustc_expand/Cargo.toml
View File

@ -9,7 +9,6 @@ doctest = false
[dependencies]
# tidy-alphabetical-start
crossbeam-channel = "0.5.0"
rustc_ast = { path = "../rustc_ast" }
rustc_ast_passes = { path = "../rustc_ast_passes" }
rustc_ast_pretty = { path = "../rustc_ast_pretty" }

16
compiler/rustc_expand/src/proc_macro.rs
View File

@ -13,16 +13,16 @@ use rustc_session::config::ProcMacroExecutionStrategy;
use rustc_span::profiling::SpannedEventArgRecorder;
use rustc_span::{Span, DUMMY_SP};
struct CrossbeamMessagePipe<T> {
tx: crossbeam_channel::Sender<T>,
rx: crossbeam_channel::Receiver<T>,
struct MessagePipe<T> {
tx: std::sync::mpsc::SyncSender<T>,
rx: std::sync::mpsc::Receiver<T>,
}
impl<T> pm::bridge::server::MessagePipe<T> for CrossbeamMessagePipe<T> {
impl<T> pm::bridge::server::MessagePipe<T> for MessagePipe<T> {
fn new() -> (Self, Self) {
let (tx1, rx1) = crossbeam_channel::bounded(1);
let (tx2, rx2) = crossbeam_channel::bounded(1);
(CrossbeamMessagePipe { tx: tx1, rx: rx2 }, CrossbeamMessagePipe { tx: tx2, rx: rx1 })
let (tx1, rx1) = std::sync::mpsc::sync_channel(1);
let (tx2, rx2) = std::sync::mpsc::sync_channel(1);
(MessagePipe { tx: tx1, rx: rx2 }, MessagePipe { tx: tx2, rx: rx1 })
}
fn send(&mut self, value: T) {
@ -35,7 +35,7 @@ impl<T> pm::bridge::server::MessagePipe<T> for CrossbeamMessagePipe<T> {
}
fn exec_strategy(ecx: &ExtCtxt<'_>) -> impl pm::bridge::server::ExecutionStrategy {
pm::bridge::server::MaybeCrossThread::<CrossbeamMessagePipe<_>>::new(
pm::bridge::server::MaybeCrossThread::<MessagePipe<_>>::new(
ecx.sess.opts.unstable_opts.proc_macro_execution_strategy
== ProcMacroExecutionStrategy::CrossThread,
)