Struct ClaimedTokens 

pub(crate) struct ClaimedTokens<'a, I> {
    bucket: &'a mut TokenBucket<I>,
    count: u64,
}

A handle to a number of claimed tokens.

Dropping this handle will commit the claim.

Fields

bucket: &'a mut TokenBucket<I>

The bucket that the claim is for.

count: u64

How many tokens to remove from the bucket.

Implementations

impl<'a, I> ClaimedTokens<'a, I>

fn new(bucket: &'a mut TokenBucket<I>, count: u64) -> Self

Create a new ClaimedTokens that will remove count tokens from the token bucket when dropped.

pub(crate) fn commit(self) -> BecameEmpty

Commit the claimed tokens.

This is equivalent to just dropping the ClaimedTokens, but also returns whether the token bucket became empty or not.

pub(crate) fn reduce( &mut self, count: u64, ) -> Result<(), InsufficientTokensError>

Reduce the claim to a fewer number of tokens than the original claim.

If count is larger than the original claim, an error will be returned containing the current number of claimed tokens.

pub(crate) fn discard(self)

Discard the claim.

This does not remove any tokens from the token bucket.

fn commit_impl(&mut self) -> BecameEmpty

The commit implementation.

After calling commit_impl(), the ClaimedTokens should no longer be used and should be dropped immediately.

Trait Implementations

impl<'a, I: Debug> Debug for ClaimedTokens<'a, I>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a, I> Drop for ClaimedTokens<'a, I>

fn drop(&mut self)

Executes the destructor for this type.