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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-17 12:02:58 +0000 |
commit | 698f8c2f01ea549d77d7dc3338a12e04c11057b9 (patch) | |
tree | 173a775858bd501c378080a10dca74132f05bc50 /vendor/parking_lot_core-0.8.5/src/thread_parker/wasm.rs | |
parent | Initial commit. (diff) | |
download | rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.tar.xz rustc-698f8c2f01ea549d77d7dc3338a12e04c11057b9.zip |
Adding upstream version 1.64.0+dfsg1.upstream/1.64.0+dfsg1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'vendor/parking_lot_core-0.8.5/src/thread_parker/wasm.rs')
-rw-r--r-- | vendor/parking_lot_core-0.8.5/src/thread_parker/wasm.rs | 54 |
1 files changed, 54 insertions, 0 deletions
diff --git a/vendor/parking_lot_core-0.8.5/src/thread_parker/wasm.rs b/vendor/parking_lot_core-0.8.5/src/thread_parker/wasm.rs new file mode 100644 index 000000000..ba4118c01 --- /dev/null +++ b/vendor/parking_lot_core-0.8.5/src/thread_parker/wasm.rs @@ -0,0 +1,54 @@ +// Copyright 2016 Amanieu d'Antras +// +// Licensed under the Apache License, Version 2.0, <LICENSE-APACHE or +// http://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. + +//! The wasm platform can't park when atomic support is not available. +//! So this ThreadParker just panics on any attempt to park. + +use instant::Instant; +use std::thread; + +pub struct ThreadParker(()); + +impl super::ThreadParkerT for ThreadParker { + type UnparkHandle = UnparkHandle; + + const IS_CHEAP_TO_CONSTRUCT: bool = true; + + fn new() -> ThreadParker { + ThreadParker(()) + } + + unsafe fn prepare_park(&self) { + panic!("Parking not supported on this platform"); + } + + unsafe fn timed_out(&self) -> bool { + panic!("Parking not supported on this platform"); + } + + unsafe fn park(&self) { + panic!("Parking not supported on this platform"); + } + + unsafe fn park_until(&self, _timeout: Instant) -> bool { + panic!("Parking not supported on this platform"); + } + + unsafe fn unpark_lock(&self) -> UnparkHandle { + panic!("Parking not supported on this platform"); + } +} + +pub struct UnparkHandle(()); + +impl super::UnparkHandleT for UnparkHandle { + unsafe fn unpark(self) {} +} + +pub fn thread_yield() { + thread::yield_now(); +} |