ksync/
raw_userspace_mutex.rs

1// Copyright 2026 The Fuchsia Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5use super::RawLock;
6use lock_api::RawMutex as _;
7use pin_init::{PinInit, pin_init_from_closure};
8
9pub type RawMutex = fuchsia_sync::RawMutex;
10
11impl RawLock for fuchsia_sync::RawMutex {
12    type LockEntry = ();
13    type GuardState = ();
14
15    #[inline]
16    fn init() -> impl PinInit<Self, core::convert::Infallible> {
17        unsafe {
18            pin_init_from_closure(|slot| {
19                core::ptr::write(slot, fuchsia_sync::RawMutex::INIT);
20                Ok(())
21            })
22        }
23    }
24
25    #[inline]
26    fn as_mut_ptr(&self) -> *mut core::ffi::c_void {
27        core::ptr::null_mut()
28    }
29
30    #[inline]
31    unsafe fn acquire(
32        &self,
33        _lcid: *mut core::ffi::c_void,
34        _entry: *mut Self::LockEntry,
35    ) -> Self::GuardState {
36        self.lock();
37    }
38
39    #[inline]
40    unsafe fn release(&self, _entry: *mut Self::LockEntry, _state: Self::GuardState) {
41        // SAFETY: The raw lock is held by the current thread
42        unsafe {
43            self.unlock();
44        }
45    }
46}
ksync/raw_userspace_mutex.rs

ksync/
raw_userspace_mutex.rs
