Read a message from a client
#include <sys/iofunc.h> #include <sys/resmgr.h> int resmgr_msgreadv( resmgr_context_t * ctp, iov_t * rmsg, int rparts, int offset );
Use the -l c option to qcc to link against this library. This library is usually included automatically.
This resmgr_msgreadv() function is a convenience function that you should use in a resource manager instead of MsgReadv().
You'll use resmgr_msgreadv() when handling combine messages, where the offset of the rest of the message that is to be read is additionally offset by previous combine message elements. For more information, see “Layers in a resource manager” in the Bones of a Resource Manager chapter of Writing a Resource Manager.
The same values as MsgReadv(): the number of bytes read, or -1 if an error occurs (errno is set).
MsgReadv(), resmgr_context_t, resmgr_msgread(), resmgr_msgreply(), resmgr_msgreplyv(), resmgr_msgwrite(), resmgr_msgwritev()
“Layers in a resource manager” in the Bones of a Resource Manager chapter of Writing a Resource Manager
Resource Managers chapter of Getting Started with QNX Neutrino