.if false
==================================================================================
- Copyright (c) 2019 Nokia
- Copyright (c) 2018-2019 AT&T Intellectual Property.
+ Copyright (c) 2019-2020 Nokia
+ Copyright (c) 2018-2020 AT&T Intellectual Property.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
==================================================================================
.fi
.if false
- Mnemonic rmr_send_msg_man.xfm
- Abstract The manual page for the rmr_send_msg function.
- Author E. Scott Daniels
- Date 28 January 2019
+ Mnemonic rmr_send_msg_man.xfm
+ Abstract The manual page for the rmr_send_msg function.
+ Author E. Scott Daniels
+ Date 28 January 2019
.fi
.gv e LIB lib
&h1(RMR Library Functions)
&h2(NAME)
- rmr_send_msg
+ rmr_send_msg
&h2(SYNOPSIS )
&indent
is known.
&space
-In the event of extreme failure, a NULL pointer is returned. In this case the value of
+In the event of extreme failure, a nil pointer is returned. In this case the value of
&cw(errno) might be of some use, for documentation, but there will be little that the
user application can do other than to move on.
&space
&beg_dlist(.75i : ^&bold_font )
-&di(RMR_RETRY) The message could not be sent, but the underlying transport mechanism
- indicates that the failure is temporary. If the send operation is tried again
- it might be successful.
-&di(RMR_SEND_FAILED) The send operation was not successful and the underlying transport
- mechanism indicates a permanent (hard) failure; retrying the send is not possible.
-&di(RMR_ERR_BADARG) The message buffer pointer did not refer to a valid message.
-&di(RMR_ERR_NOHDR) The header in the message buffer was not valid or corrupted.
-&di(RMR_ERR_NOENDPT) The message type in the message buffer did not map to a known endpoint.
+&ditem(RMR_RETRY) The message could not be sent, but the underlying transport mechanism
+ indicates that the failure is temporary. If the send operation is tried again
+ it might be successful.
+&ditem(RMR_SEND_FAILED) The send operation was not successful and the underlying transport
+ mechanism indicates a permanent (hard) failure; retrying the send is not possible.
+&ditem(RMR_ERR_BADARG) The message buffer pointer did not refer to a valid message.
+&ditem(RMR_ERR_NOHDR) The header in the message buffer was not valid or corrupted.
+&ditem(RMR_ERR_NOENDPT) The message type in the message buffer did not map to a known endpoint.
&end_dlist
&space
The following values may be assigned to &cw(errno) on failure.
&beg_dlist(.75i : ^&bold_font )
-&di(INVAL) Parameter(s) passed to the function were not valid, or the underlying message processing environment was unable to interpret the message.
+&ditem(INVAL) Parameter(s) passed to the function were not valid, or the underlying message processing environment was unable to interpret the message.
-&half_space
-&di(ENOKEY) The header information in the message buffer was invalid.
+&ditem(ENOKEY) The header information in the message buffer was invalid.
-&half_space
-&di(ENXIO) No known endpoint for the message could be found.
+&ditem(ENXIO) No known endpoint for the message could be found.
-&half_space
-&di(EMSGSIZE) The underlying transport refused to accept the message because of a size value issue (message was not attempted to be sent).
+&ditem(EMSGSIZE) The underlying transport refused to accept the message because of a size value issue (message was not attempted to be sent).
-&half_space
-&di(EFAULT) The message referenced by the message buffer is corrupt (NULL pointer or bad internal length).
+&ditem(EFAULT) The message referenced by the message buffer is corrupt (nil pointer or bad internal length).
-&half_space
-&di(EBADF) Internal RMR error; information provided to the message transport environment was not valid.
+&ditem(EBADF) Internal RMR error; information provided to the message transport environment was not valid.
-&half_space
-&di(ENOTSUP) Sending was not supported by the underlying message transport.
+&ditem(ENOTSUP) Sending was not supported by the underlying message transport.
-&half_space
-&di(EFSM) The device is not in a state that can accept the message.
+&ditem(EFSM) The device is not in a state that can accept the message.
-&half_space
-&di(EAGAIN) The device is not able to accept a message for sending. The user application should attempt to resend.
+&ditem(EAGAIN) The device is not able to accept a message for sending. The user application should attempt to resend.
-&half_space
-&di(EINTR) The operation was interrupted by delivery of a signal before the message was sent.
+&ditem(EINTR) The operation was interrupted by delivery of a signal before the message was sent.
-&half_space
-&di(ETIMEDOUT) The underlying message environment timed out during the send process.
+&ditem(ETIMEDOUT) The underlying message environment timed out during the send process.
-&half_space
-&di(ETERM) The underlying message environment is in a shutdown state.
+&ditem(ETERM) The underlying message environment is in a shutdown state.
&end_dlist
&h2(EXAMPLE)
msg_t* send_pm; // payload for send
msg_t* pm; // our message format in the received payload
- if( send_msg == NULL ) {
- send_msg = rmr_alloc_msg( mr, MAX_SIZE ); // new buffer to send
- }
+ if( send_msg == NULL ) {
+ send_msg = rmr_alloc_msg( mr, MAX_SIZE ); // new buffer to send
+ }
- // reference payload and fill in message type
+ // reference payload and fill in message type
pm = (msg_t*) send_msg->payload;
send_msg->mtype = MT_ANSWER;
msg->len = generate_data( pm ); // something that fills the payload in
msg = rmr_send_msg( mr, send_msg ); // ensure new pointer used after send
- if( ! msg ) {
- return ERROR;
- } else {
- if( msg->state != RMR_OK ) {
- // check for RMR_ERR_RETRY, and resend if needed
- // else return error
- }
- }
-
- return OK;
+ if( ! msg ) {
+ return ERROR;
+ } else {
+ if( msg->state != RMR_OK ) {
+ // check for RMR_ERR_RETRY, and resend if needed
+ // else return error
+ }
+ }
+ return OK;
&ex_end
Code Review / ric-plt / lib / rmr.git / blobdiff