keylock

package
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 Go to latest Published: Jun 11, 2026 License: AGPL-3.0 Imports: 2 Imported by: 0

Documentation

Overview

Package keylock provides per-key mutual-exclusion locks that honor context cancellation. A KeyMap[K] is a process-wide map of locks keyed by K; Acquire returns once the slot is free or ctx fires.

Index

Constants

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Variables

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Functions

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Types

type KeyMap 

type KeyMap[K comparable] struct {
	// contains filtered or unexported fields
}

KeyMap holds one lock per key value, allocated on first use.

func New 

func New[K comparable]() *KeyMap[K]

New constructs an empty KeyMap.

func (*KeyMap[K]) Acquire 

func (m *KeyMap[K]) Acquire(ctx context.Context, key K) (release func(), err error)

Acquire blocks until the lock for key is held by the caller, or ctx is done. Returns ctx.Err on cancellation (lock not held). On success returns a release func — call it (typically deferred) to free the lock.

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