Semaphore

class dsviper.Semaphore

Bases: object

A class used to represent a semaphore. Use the static factory method create(…) or open(…).

Note: Not directly instantiable.

static create(name: str) → Semaphore

Create a semaphore.

static exists(name: str) → bool

Return True is the name exist.

name() → str

Return the name.

static open(name: str) → Semaphore

Open an existing semaphore.

post() → bool

The semaphore is unlocked.

try_wait() → bool

The semaphore is locked.

static unlink(name: str) → bool

Unlink the shared memory object.

wait() → bool

The semaphore is locked.