64fe93e49d
This commit removes many unnecessary `unsafe impl` blocks as well as pushing the needed implementations to the lowest level possible. I noticed that the bounds for `RwLock` are a little off when reviewing #22574 and wanted to ensure that we had our story straight on these implementations.
55 lines
1.5 KiB
Rust
55 lines
1.5 KiB
Rust
// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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use prelude::v1::*;
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use cell::UnsafeCell;
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use sys::sync as ffi;
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pub struct RWLock { inner: UnsafeCell<ffi::SRWLOCK> }
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pub const RWLOCK_INIT: RWLock = RWLock {
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inner: UnsafeCell { value: ffi::SRWLOCK_INIT }
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};
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unsafe impl Send for RWLock {}
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unsafe impl Sync for RWLock {}
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impl RWLock {
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#[inline]
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pub unsafe fn read(&self) {
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ffi::AcquireSRWLockShared(self.inner.get())
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}
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#[inline]
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pub unsafe fn try_read(&self) -> bool {
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ffi::TryAcquireSRWLockShared(self.inner.get()) != 0
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}
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#[inline]
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pub unsafe fn write(&self) {
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ffi::AcquireSRWLockExclusive(self.inner.get())
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}
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#[inline]
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pub unsafe fn try_write(&self) -> bool {
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ffi::TryAcquireSRWLockExclusive(self.inner.get()) != 0
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}
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#[inline]
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pub unsafe fn read_unlock(&self) {
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ffi::ReleaseSRWLockShared(self.inner.get())
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}
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#[inline]
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pub unsafe fn write_unlock(&self) {
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ffi::ReleaseSRWLockExclusive(self.inner.get())
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}
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#[inline]
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pub unsafe fn destroy(&self) {
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// ...
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}
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}
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