Process ID

Process ID

Ein Process identifier (process ID, PID) ist ein einzigartiger Schlüssel, welcher der eindeutigen Identifikation von Prozessen dient. Der PID ändert sich während der Laufzeit des Prozesses nicht. Nach dem Beenden des Prozesses wird der PID wieder für neue Prozesse frei.

Die meisten Betriebssysteme (z. B. UNIX, Windows usw.) verwenden hierfür eine vorzeichenlose Ganzzahl. Process IDs werden hauptsächlich für die Interprozesskommunikation benötigt.


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