Go Cond

Internal

• The sync Package

Overview

Cond implements a condition variable, a rendezvous point for goroutines waiting for or announcing the occurrence of an event. Each Cond has an associated Locker L, commonly a *Mutex or *RWMutex, which must be held when changing the condition and when calling the Wait method. A Cond must not be copied after first use.

In the terminology of the Go memory model, Cond arranges that a call to Broadcast() or Signal() "synchronizes before" any Wait call that it unblocks. For many simple use cases, users will be better off using channels than a Cond (Broadcast() corresponds to closing a channel, and Signal corresponds to sending on a channel).