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This chapter describes the NSPR API for using interprocess communication
semaphores.
NSPR provides an interprocess communication mechanism using a counting
semaphore model similar to that which is provided in Unix and Windows
platforms.
:::{note}
**Note:** See also [Named Shared Memory](Named_Shared_Memory)
:::
- [IPC Semaphore Functions](#IPC_Semaphore_Functions)
(ipc-semaphore-functions)=
# IPC Semaphore Functions
> - {ref}`PR_OpenSemaphore`
> - {ref}`PR_WaitSemaphore`
> - {ref}`PR_PostSemaphore`
> - {ref}`PR_CloseSemaphore`
> - {ref}`PR_DeleteSemaphore`