ReleaseSRWLockShared

ReleaseSRWLockShared releases an SRW lock previously acquired in shared mode. If other threads are waiting, the next waiter is awakened according to the queuing policy.

Syntax

Copy

VOID ReleaseSRWLockShared(   
    PSRWLOCK pSrwLock
);

Parameters

pSrwLock

A pointer to the SRW lock to release.

Return Value

This function does not return a value.

Remarks

This function must be called by a thread that acquired the lock in shared mode.
This function decrements the shared reference count.
When the last shared holder releases, exclusive waiters are awakened.
This function raises EXCEPTION_POSSIBLE_DEADLOCK if the lock is not in shared mode.
This function raises EXCEPTION_ACCESS_VIOLATION if pSrwLock is NULL.

Requirements

Minimum supported version	Header	Library
wRTOS 1.1 SDK	windows.h	wRTOS_rtss.lib

Example

Copy

AcquireSRWLockShared(&lock);
// Read-only operations
ReleaseSRWLockShared(&lock);