Resume processing of a message
int MsgCurrent( int rcvid ); int MsgCurrent_r( int rcvid );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The MsgCurrent() kernel call announces to the kernel that you are resuming the processing of a previously received message. The kernel checks that the thread identified by rcvid is still valid and is reply-blocked on the connection associated with that rcvid.
If the channel doesn't have _NTO_CHF_FIXED_PRIORITY set in its flags, then the appropriate priority adjustment will be made to the calling thread's priority.
Blocking states
None. If priority inheritance causes the priority of the calling thread to drop, other threads may run.
The only difference between the MsgCurrent() and MsgCurrent_r() functions is the way they indicate errors:
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | No |
Signal handler | Yes |
Thread | Yes |