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awesomeness
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2 changed files with 24 additions and 8 deletions
18
README.md
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18
README.md
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@ -0,0 +1,18 @@
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# pythonic_global_lock
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This crate provides a `GLock<T>`, that is globally locked. Every `GLock<T>` uses the same global lock, so locking on
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will lock all. Sounds like a dumb idea? One of the most popular programming implementations does it, so it must be
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smart.
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```rust
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fn main() {
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let lock1 = pythonic_global_lock::GLock::new(1);
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let lock2 = pythonic_global_lock::GLock::new(2);
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{
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let locked1 = lock1.lock();
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println!("{}", &*locked1)
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// locking lock2 here would be a deadlock
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}
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}
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```
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14
src/lib.rs
14
src/lib.rs
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@ -1,6 +1,4 @@
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//! This crate provides a `GLock<T>`, that is globally locked. Every `GLock<T>` uses the same
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//! global lock, so locking on will lock all. Sounds like a dumb idea? One of the most popular
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//! programming implementations does it, so it must be smart.
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#![doc = include_str!("../README.md")]
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use parking_lot::lock_api::{MutexGuard, RawMutex};
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use parking_lot::Mutex;
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@ -30,23 +28,23 @@ impl<T> GLock<T> {
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let value = unsafe { &mut *self.inner.get() };
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GLockGuard {
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value,
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global_guard,
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_global_guard: global_guard,
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}
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}
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pub const fn get_mut(&mut self) -> &mut T {
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pub fn get_mut(&mut self) -> &mut T {
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self.inner.get_mut()
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}
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pub const fn into_inner(self) -> T {
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pub fn into_inner(self) -> T {
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self.inner.into_inner()
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}
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}
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/// A guard that guards a globally locked value
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struct GLockGuard<'a, T> {
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pub struct GLockGuard<'a, T> {
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value: &'a mut T,
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global_guard: MutexGuard<'a, parking_lot::RawMutex, ()>,
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_global_guard: MutexGuard<'a, parking_lot::RawMutex, ()>,
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}
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impl<'a, T> Deref for GLockGuard<'a, T> {
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