| IPC::CritSec | This class can be used to construct critical sections |
| IPC::Msg | System V message queue |
| IPC::MsgClient | This class uses TwoWayMsg for the client side of a single server/multiple client scenario |
| IPC::MsgServer | This class uses TwoWayMsg for the server side of a single server/multiple client scenario |
| IPC::Mutex | A single mutex semaphore |
| IPC::SemSet | System V IPC semaphore set |
| IPC::Shm | System V IPC shared memory |
| IPC::TwoWayMsg | This class allows for two-way communication |
1.2.13.1 written by Dimitri van Heesch,
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