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Constants ¶
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Variables ¶
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Functions ¶
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Types ¶
type KeyMutex ¶
type KeyMutex interface {
// Acquires a lock associated with the specified ID, creates the lock if one doesn't already exist.
LockKey(id string)
// Releases the lock associated with the specified ID.
// Returns an error if the specified ID doesn't exist.
UnlockKey(id string) error
}
KeyMutex is a thread-safe interface for acquiring locks on arbitrary strings.
func NewHashed ¶
NewHashed returns a new instance of KeyMutex which hashes arbitrary keys to a fixed set of locks. `n` specifies number of locks, if n <= 0, we use number of cpus. Note that because it uses fixed set of locks, different keys may share same lock, so it's possible to wait on same lock.
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