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Resize the event buffer
int PtResizeEventMsg( PtAppContext_t app,
int msg_size );
ph
This function sets the size the Photon event buffer, which receives all
events on behalf of a Photon application. Using this function to
increase the acceptable message size allows larger non-Photon messages
to be received by the Photon application without requiring
MsgReadv()
(see the QNX Neutrino Library Reference).
|
PtResizeEventMsg() won't reduce the message buffer beyond
a certain minimum size. This is so that the widget library
will continue to function.
PtResizeEventMsg() doesn't actually reallocate any message buffers.
It just sets the size to be used for them. |
The app argument is the address of the application context, a
structure that manages all the data associated with this
application.
This must be specified as NULL,
so that the default context is used.
- 0
- Successful completion.
- -1
- An error occurred.
Photon
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
“Receiving QNX messages”
in the Interprocess Communications chapter of the
Photon Programmer's Guide
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