iofunc_unblock()

Updated: October 26, 2022

Unblock OCBs

Synopsis:

#include <sys/iofunc.h>

int iofunc_unblock( resmgr_context_t * ctp,
                    iofunc_attr_t * attr );

Arguments:

ctp
A pointer to a resmgr_context_t structure that the resource-manager library uses to pass context information between functions.
attr
A pointer to the iofunc_attr_t structure that describes the characteristics of the device that's associated with your resource manager.

Library:

libc

Use the -l c option to qcc to link against this library. This library is usually included automatically.

Description:

The iofunc_unblock() function unblocks any clients that are blocked on any internal resource manager structures.

Note: Currently, this involves only the advisory lock list that's maintained by the attribute.

If a client connection is found on the internal lists:

If no such client connection is found, iofunc_unblock() returns _RESMGR_DEFAULT. In this case, the user code must clean up and unblock the client.

Returns:

_RESMGR_DEFAULT
No client connection was found.
_RESMGR_NOREPLY
A client connection has been unblocked.

Classification:

QNX Neutrino

Safety:  
Cancellation point No
Interrupt handler No
Signal handler Yes
Thread Yes