syncz

type Mutex ¶

type Mutex struct {
	// contains filtered or unexported fields
}

Mutex is a non-reentrant (like sync.Mutex) mutex that (unlike sync.Mutex) allows to acquire the mutex with a possibility to abort the attempt early if a context signals done.

A buffered channel of size 1 is used as the mutex. Think of it as of a box - the party that has put something into it has acquired the mutex. To unlock it, remove the contents from the box, so that someone else can use it. An empty box is created in the NewMutex() constructor.

TryLock, Lock, and Unlock provide memory access ordering guarantees by piggybacking on channel's "happens before" guarantees. See https://golang.org/ref/mem

func NewMutex() Mutex

func (m Mutex) Lock(ctx context.Context) bool

func (m Mutex) TryLock() bool

func (m Mutex) Unlock()

type RWMutex ¶

type RWMutex struct {
	// contains filtered or unexported fields
}

func NewRWMutex() RWMutex

func (m RWMutex) Lock(ctx context.Context) bool

func (m RWMutex) RLock(ctx context.Context) bool

func (m RWMutex) RUnlock()

func (m RWMutex) Unlock()

type Worker ¶ added in v16.1.3

type Worker interface {
	Run(context.Context)
}

type WorkerFunc ¶ added in v16.1.3

type WorkerFunc func(context.Context)

func (wf WorkerFunc) Run(ctx context.Context)

type WorkerHolder ¶ added in v16.1.3

type WorkerHolder[C any] struct {
	// contains filtered or unexported fields
}

WorkerHolder holds a worker and restarts it when configuration changes.

func NewComparableWorkerHolder[C comparable](factory func(C) Worker) *WorkerHolder[C]

func NewProtoWorkerHolder[C proto.Message](factory func(C) Worker) *WorkerHolder[C]

func NewWorkerHolder[C any](factory func(C) Worker, isEqual func(config1, config2 C) bool) *WorkerHolder[C]

func (w *WorkerHolder[C]) ApplyConfig(ctx context.Context, config C) bool

func (w *WorkerHolder[C]) StopAndWait()