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:
- that client is unblocked, and is replied to with the error EINTR
- iofunc_unblock() returns _RESMGR_NOREPLY
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 |