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pub struct RwLockWriteGuard<'a, T, R = Spin>where
    T: 'a + ?Sized,
{ /* private fields */ }
Expand description

A guard that provides mutable data access.

When the guard falls out of scope it will release the lock.

Implementations

Downgrades the writable lock guard to a readable, shared lock guard. Cannot fail and is guaranteed not to spin.

let mylock = spin::RwLock::new(0);

let mut writable = mylock.write();
*writable = 1;

let readable = writable.downgrade(); // This is guaranteed not to spin
assert_eq!(*readable, 1);

Downgrades the writable lock guard to an upgradable, shared lock guard. Cannot fail and is guaranteed not to spin.

let mylock = spin::RwLock::new(0);

let mut writable = mylock.write();
*writable = 1;

let readable = writable.downgrade_to_upgradeable(); // This is guaranteed not to spin
assert_eq!(*readable, 1);

Leak the lock guard, yielding a mutable reference to the underlying data.

Note that this function will permanently lock the original lock.

let mylock = spin::RwLock::new(0);

let data: &mut i32 = spin::RwLockWriteGuard::leak(mylock.write());

*data = 1;
assert_eq!(*data, 1);

Trait Implementations

Formats the value using the given formatter. Read more
The resulting type after dereferencing.
Dereferences the value.
Mutably dereferences the value.
Formats the value using the given formatter. Read more
Executes the destructor for this type. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more
Immutably borrows from an owned value. Read more
Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

Converts the given value to a String. Read more
The type returned in the event of a conversion error.
Performs the conversion.
The type returned in the event of a conversion error.
Performs the conversion.