if( msg == NULL ) {
msg = (rmr_mbuf_t *) malloc( sizeof *msg );
if( msg == NULL ) {
- fprintf( stderr, "[CRI] rmr_alloc_zc: cannot get memory for message\n" );
+ rmr_vlog( RMR_VL_CRIT, "rmr_alloc_zc: cannot get memory for message\n" );
exit( 1 );
}
} else {
memset( msg, 0, sizeof( *msg ) );
if( (state = nng_msg_alloc( (nng_msg **) &msg->tp_buf, mlen )) != 0 ) {
- fprintf( stderr, "[CRI] rmr_alloc_zc: cannot get memory for zero copy buffer: %d\n", ENOMEM );
+ rmr_vlog( RMR_VL_CRIT, "rmr_alloc_zc: cannot get memory for zero copy buffer: %d\n", ENOMEM );
abort( ); // toss out a core file for this
}
strncpy( (char *) ((uta_mhdr_t *)msg->header)->src, ctx->my_name, RMR_MAX_SRC );
strncpy( (char *) ((uta_mhdr_t *)msg->header)->srcip, ctx->my_ip, RMR_MAX_SRC );
- if( DEBUG > 1 ) fprintf( stderr, "[DBUG] alloc_zcmsg mlen=%ld size=%d mpl=%d flags=%02x\n", (long) mlen, size, ctx->max_plen, msg->flags );
+ if( DEBUG > 1 ) rmr_vlog( RMR_VL_DEBUG, "alloc_zcmsg mlen=%ld size=%d mpl=%d flags=%02x\n", (long) mlen, size, ctx->max_plen, msg->flags );
return msg;
}
msg = (rmr_mbuf_t *) malloc( sizeof *msg );
if( msg == NULL ) {
- fprintf( stderr, "[CRI] rmr_alloc_zc: cannot get memory for message\n" );
+ rmr_vlog( RMR_VL_CRIT, "rmr_alloc_zc: cannot get memory for message\n" );
exit( 1 );
}
nm = (rmr_mbuf_t *) malloc( sizeof *nm );
if( nm == NULL ) {
- fprintf( stderr, "[CRI] rmr_clone: cannot get memory for message buffer\n" );
+ rmr_vlog( RMR_VL_CRIT, "rmr_clone: cannot get memory for message buffer\n" );
exit( 1 );
}
memset( nm, 0, sizeof( *nm ) );
mlen = old_msg->alloc_len; // length allocated before
if( (state = nng_msg_alloc( (nng_msg **) &nm->tp_buf, mlen )) != 0 ) {
- fprintf( stderr, "[CRI] rmr_clone: cannot get memory for zero copy buffer: %d\n", ENOMEM );
+ rmr_vlog( RMR_VL_CRIT, "rmr_clone: cannot get memory for zero copy buffer: %d\n", ENOMEM );
exit( 1 );
}
v1hdr = (uta_v1mhdr_t *) old_msg->header; // v1 will work to dig header out of any version
switch( ntohl( v1hdr->rmr_ver ) ) {
case 1:
- memcpy( v1hdr, old_msg->header, sizeof( *v1hdr ) ); // copy complete header
+ hdr = nm->header;
+ memcpy( hdr, old_msg->header, sizeof( *v1hdr ) ); // copy complete header
nm->payload = (void *) v1hdr + sizeof( *v1hdr );
break;
default: // current message always caught here
hdr = nm->header;
- memcpy( hdr, old_msg->header, RMR_HDR_LEN( old_msg->header ) + RMR_TR_LEN( old_msg->header ) + RMR_D1_LEN( old_msg->header ) + RMR_D2_LEN( old_msg->header )); // copy complete header, trace and other data
+ memcpy( hdr, old_msg->header, RMR_HDR_LEN( old_msg->header ) ); // copy complete header, trace and other data
nm->payload = PAYLOAD_ADDR( hdr ); // at user payload
break;
}
nm->sub_id = old_msg->sub_id;
nm->len = old_msg->len; // length of data in the payload
nm->alloc_len = mlen; // length of allocated payload
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "clone values: mty=%d sid=%d len=%d alloc=%d\n", nm->mtype, nm->sub_id, nm->len, nm->alloc_len );
- nm->xaction = hdr->xid; // reference xaction
+ nm->xaction = &hdr->xid[0]; // point at transaction id in header area
nm->state = old_msg->state; // fill in caller's state (likely the state of the last operation)
nm->flags = old_msg->flags | MFL_ZEROCOPY; // this is a zerocopy sendable message
memcpy( nm->payload, old_msg->payload, old_msg->len );
nm = (rmr_mbuf_t *) malloc( sizeof *nm );
if( nm == NULL ) {
- fprintf( stderr, "[CRI] rmr_clone: cannot get memory for message buffer\n" );
+ rmr_vlog( RMR_VL_CRIT, "rmr_clone: cannot get memory for message buffer\n" );
exit( 1 );
}
memset( nm, 0, sizeof( *nm ) );
tr_old_len = RMR_TR_LEN( hdr ); // bytes in old header for trace
mlen = old_msg->alloc_len + (tr_len - tr_old_len); // new length with trace adjustment
- if( DEBUG ) fprintf( stderr, "[DBUG] tr_realloc old size=%d new size=%d new tr_len=%d\n", (int) old_msg->alloc_len, (int) mlen, (int) tr_len );
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "tr_realloc old size=%d new size=%d new tr_len=%d\n", (int) old_msg->alloc_len, (int) mlen, (int) tr_len );
if( (state = nng_msg_alloc( (nng_msg **) &nm->tp_buf, mlen )) != 0 ) {
- fprintf( stderr, "[CRI] rmr_clone: cannot get memory for zero copy buffer: %d\n", ENOMEM );
+ rmr_vlog( RMR_VL_CRIT, "rmr_clone: cannot get memory for zero copy buffer: %d\n", ENOMEM );
exit( 1 );
}
nm->len = old_msg->len; // length of data in the payload
nm->alloc_len = mlen; // length of allocated payload
- nm->xaction = hdr->xid; // reference xaction
+ nm->xaction = &hdr->xid[0]; // point at transaction id in header area
nm->state = old_msg->state; // fill in caller's state (likely the state of the last operation)
nm->flags = old_msg->flags | MFL_ZEROCOPY; // this is a zerocopy sendable message
memcpy( nm->payload, old_msg->payload, old_msg->len );
return nm;
}
+/*
+ Realloc the message such that the payload is at least payload_len bytes. If the current
+ payload size is large enough, no action is taken. If copy is false, the actual payload
+ bytes are NOT copied. This allows a caller to realloc for a response message (to retain
+ the source information which would be lost on a simple alloc) which has no need for the
+ original message.
+
+ The old message buffer will reference the new underlying transport, and the original payload
+ will be lost unless clone is set to true. If clone is true, the old message buffer will continue
+ to reference the original payload, and a new message buffer will be allocated (even if the
+ payload size in the old message was larger than requested).
+
+ The return value is a pointer to the message with at least payload_len bytes allocated. It
+ will be the same as the old_message if clone is false.
+
+ CAUTION:
+ If the message is not a message which was received, the mtype, sub-id, length values in the
+ RMR header in the allocated transport buffer will NOT be accurate and will cause the resulting
+ mbuffer information for mtype and subid to be reset even when copy is true. To avoid silently
+ resetting information in the mbuffer, this funciton will reset the mbuf values from the current
+ settings and NOT from the copied RMR header in transport buffer.
+*/
+static inline rmr_mbuf_t* realloc_payload( rmr_mbuf_t* old_msg, int payload_len, int copy, int clone ) {
+ rmr_mbuf_t* nm = NULL; // new message buffer when cloning
+ size_t mlen;
+ int state;
+ uta_mhdr_t* omhdr; // old message header
+ uta_v1mhdr_t* v1hdr;
+ int tr_old_len; // tr size in new buffer
+ int old_psize = 0; // current size of message for payload
+ int hdr_len = 0; // length of RMR header in old msg
+ void* old_tp_buf; // pointer to the old tp buffer
+ int free_tp = 1; // free the transport buffer (old) when done (when not cloning)
+ int old_mt; // msg type and sub-id from the message passed in
+ int old_sid;
+ int old_len;
+
+ if( old_msg == NULL || payload_len <= 0 ) {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ old_mt = old_msg->mtype;
+ old_sid = old_msg->sub_id;
+ old_len = old_msg->len;
+ old_psize = old_msg->alloc_len - RMR_HDR_LEN( old_msg->header ); // allocated transport size less the header and other data bits
+ if( !clone && payload_len <= old_psize ) { // old message is large enough, nothing to do
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "rmr_realloc_payload: old msg payload larger than requested: cur=%d need=%d\n", old_psize, payload_len );
+ return old_msg;
+ }
+
+ hdr_len = RMR_HDR_LEN( old_msg->header );
+ old_tp_buf = old_msg->tp_buf;
+
+ if( clone ) {
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "rmr_realloc_payload: cloning message\n" );
+ free_tp = 0;
+
+ nm = (rmr_mbuf_t *) malloc( sizeof( *nm ) );
+ if( nm == NULL ) {
+ rmr_vlog( RMR_VL_CRIT, "rmr_realloc_payload: cannot get memory for message buffer. bytes requested: %d\n", (int) sizeof(*nm) );
+ return NULL;
+ }
+ memset( nm, 0, sizeof( *nm ) );
+ } else {
+ nm = old_msg;
+ }
+
+ omhdr = old_msg->header;
+ mlen = hdr_len + (payload_len > old_psize ? payload_len : old_psize); // must have larger in case copy is true
+
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "reallocate for payload increase. new message size: %d\n", (int) mlen );
+ if( (state = nng_msg_alloc( (nng_msg **) &nm->tp_buf, mlen )) != 0 ) {
+ rmr_vlog( RMR_VL_CRIT, "rmr_realloc_payload: cannot get memory for zero copy buffer. bytes requested: %d\n", (int) mlen );
+ return NULL;
+ }
+
+ nm->header = nng_msg_body( nm->tp_buf ); // set and copy the header from old message
+ SET_HDR_LEN( nm->header );
+
+ if( copy ) { // if we need to copy the old payload too
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "rmr_realloc_payload: copy payload into new message: %d bytes\n", old_psize );
+ memcpy( nm->header, omhdr, sizeof( char ) * (old_psize + RMR_HDR_LEN( omhdr )) );
+ } else { // just need to copy header
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "rmr_realloc_payload: copy only header into new message: %d bytes\n", RMR_HDR_LEN( nm->header ) );
+ memcpy( nm->header, omhdr, sizeof( char ) * RMR_HDR_LEN( omhdr ) );
+ }
+
+ ref_tpbuf( nm, mlen ); // set payload and other pointers in the message to the new tp buffer
+
+ if( !copy ) {
+ nm->mtype = -1; // didn't copy payload, so mtype and sub-id are invalid
+ nm->sub_id = -1;
+ nm->len = 0; // and len is 0
+ } else {
+ nm->len = old_len; // we must force these to avoid losing info if msg wasn't a received message
+ nm->mtype = old_mt;
+ nm->sub_id = old_sid;
+ }
+
+ if( free_tp ) {
+ free( old_tp_buf ); // we did not clone, so free b/c no references
+ }
+
+ return nm;
+}
+
/*
This is the receive work horse used by the outer layer receive functions.
It waits for a message to be received on our listen socket. If old msg
hdr = (uta_mhdr_t *) msg->header;
msg->flags |= MFL_ADDSRC; // turn on so if user app tries to send this buffer we reset src
- if( DEBUG > 1 ) fprintf( stderr, "[DBUG] rcv_msg: got something: type=%d state=%d len=%d diff=%ld\n",
+ if( DEBUG > 1 ) rmr_vlog( RMR_VL_DEBUG, "rcv_msg: got something: type=%d state=%d len=%d diff=%ld\n",
msg->mtype, msg->state, msg->len, msg->payload - (unsigned char *) msg->header );
} else {
msg->state = RMR_ERR_EMPTY;
msg->payload = msg->header; // payload is the whole thing; no header
msg->xaction = NULL;
- if( DEBUG > 1 ) fprintf( stderr, "[DBUG] rcv_payload: got something: type=%d state=%d len=%d\n", msg->mtype, msg->state, msg->len );
+ if( DEBUG > 1 ) rmr_vlog( RMR_VL_DEBUG, "rcv_payload: got something: type=%d state=%d len=%d\n", msg->mtype, msg->state, msg->len );
return msg;
}
msg->state = xlate_nng_state( msg->state, RMR_ERR_SENDFAILED ); // xlate to our state and set errno
}
- if( DEBUG ) fprintf( stderr, "[DBUG] send failed: %d %s\n", (int) msg->state, strerror( msg->state ) );
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "send failed: %d %s\n", (int) msg->state, strerror( msg->state ) );
}
return msg;
if( (rte = uta_get_rte( ctx->rtable, msg->sub_id, msg->mtype, TRUE )) == NULL ) { // find the entry which matches subid/type allow fallback to type only key
if( ctx->flags & CTXFL_WARN ) {
- fprintf( stderr, "[WARN] no endpoint for mtype=%d sub_id=%d\n", msg->mtype, msg->sub_id );
+ rmr_vlog( RMR_VL_WARN, "no endpoint for mtype=%d sub_id=%d\n", msg->mtype, msg->sub_id );
}
msg->state = RMR_ERR_NOENDPT;
errno = ENXIO; // must ensure it's not eagain
send_again = 1; // force loop entry
group = 0; // always start with group 0
while( send_again ) {
- sock_ok = uta_epsock_rr( rte, group, &send_again, &nn_sock, &ep ); // select endpt from rr group and set again if more groups
+ if( rte->nrrgroups > 0 ) { // this is a round robin entry
+ sock_ok = uta_epsock_rr( rte, group, &send_again, &nn_sock, &ep ); // select endpt from rr group and set again if more groups
+ } else {
+ sock_ok = epsock_meid( ctx->rtable, msg, &nn_sock, &ep );
+ send_again = 0;
+ }
- if( DEBUG ) fprintf( stderr, "[DBUG] mtosend_msg: flgs=0x%04x type=%d again=%d group=%d len=%d sock_ok=%d\n",
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "mtosend_msg: flgs=0x%04x type=%d again=%d group=%d len=%d sock_ok=%d\n",
msg->flags, msg->mtype, send_again, group, msg->len, sock_ok );
group++;
errno = ENOMEM;
msg->tp_state = errno;
if( ctx->flags & CTXFL_WARN ) {
- fprintf( stderr, "[WARN] unable to clone message for multiple rr-group send\n" );
+ rmr_vlog( RMR_VL_WARN, "unable to clone message for multiple rr-group send\n" );
}
return msg;
}
- if( DEBUG ) fprintf( stderr, "[DBUG] msg cloned: type=%d len=%d\n", msg->mtype, msg->len );
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "msg cloned: type=%d len=%d\n", msg->mtype, msg->len );
msg->flags |= MFL_NOALLOC; // keep send from allocating a new message; we have a clone to use
msg = send_msg( ctx, msg, nn_sock, max_to ); // do the hard work, msg should be nil on success
msg = send_msg( ctx, msg, nn_sock, max_to ); // send the last, and allocate a new buffer; drops the clone if it was
if( DEBUG ) {
if( msg == NULL ) {
- fprintf( stderr, "[DBUG] mtosend_msg: send returned nil message!\n" );
+ rmr_vlog( RMR_VL_DEBUG, "mtosend_msg: send returned nil message!\n" );
}
}
}
}
} else {
if( ctx->flags & CTXFL_WARN ) {
- fprintf( stderr, "[WARN] invalid socket for rte, setting no endpoint err: mtype=%d sub_id=%d\n", msg->mtype, msg->sub_id );
+ rmr_vlog( RMR_VL_WARN, "invalid socket for rte, setting no endpoint err: mtype=%d sub_id=%d\n", msg->mtype, msg->sub_id );
}
msg->state = RMR_ERR_NOENDPT;
errno = ENXIO;
msg->state = RMR_OK;
}
- if( DEBUG ) fprintf( stderr, "[DBUG] final send stats: ok=%d group=%d state=%d\n\n", ok_sends, group, msg->state );
+ if( DEBUG ) rmr_vlog( RMR_VL_DEBUG, "final send stats: ok=%d group=%d state=%d\n\n", ok_sends, group, msg->state );
msg->tp_state = errno;
}
Code Review / ric-plt / lib / rmr.git / blobdiff