static struct mbuf *
rr_dequeue(struct dn_sch_inst *_si)
{
/* Access scheduler instance private data */
struct rr_si *si = (struct rr_si *)(_si + 1);
struct rr_queue *rrq;
uint64_t len;
while ( (rrq = si->head) ) {
struct mbuf *m = rrq->q.mq.head;
if ( m == NULL) {
/* empty queue, remove from list */
rr_remove_head(si);
continue;
}
len = m->m_pkthdr.len;
if (len > rrq->credit) {
/* Packet too big */
rrq->credit += rrq->quantum;
/* Try next queue */
next_pointer(si);
} else {
rrq->credit -= len;
return dn_dequeue(&rrq->q);
}
}
/* no packet to dequeue*/
return NULL;
}
int next_geometry(GEOSCommand *command, GEOSGeometry** geom) {
//long type;
void *geom_ptr;
if(next_pointer(command, 2, "ggeom", &geom_ptr)) {
return -1;
}
//read the geometry type for sanity purpose
/*
if(ei_decode_long(command->param_bytes, &command->index, &type)) {
return -1;
}
switch((int) type) {
case GEOS_POINT:
case GEOS_LINESTRING:
case GEOS_LINEARRING:
case GEOS_POLYGON:
case GEOS_MULTIPOINT:
case GEOS_MULTILINESTRING:
case GEOS_MULTIPOLYGON:
case GEOS_GEOMETRYCOLLECTION: break;
default:
return -1;
}*/
*geom = (GEOSGeometry *)geom_ptr;
return 0;
}
int next_wktwriter(GEOSCommand *command, GEOSWKTWriter** writer) {
void *writer_ptr;
if(next_pointer(command, 2, "gwktwriter", &writer_ptr)) {
return -1;
}
*writer = (GEOSWKTWriter *)writer_ptr;
return 0;
}
int next_coordsequence(GEOSCommand *command, GEOSCoordSequence** seq) {
void *seq_ptr;
if(next_pointer(command, 2, "gcoordseq", &seq_ptr)) {
return -1;
}
*seq = (GEOSCoordSequence *)seq_ptr;
return 0;
}
int next_prepared_geometry(GEOSCommand *command, GEOSPreparedGeometry** geom) {
void *geom_ptr;
if(next_pointer(command, 2, "gpreparedgeom", &geom_ptr)) {
return -1;
}
*geom = (GEOSPreparedGeometry *)geom_ptr;
return 0;
}
int next_wkbreader(GEOSCommand *command, GEOSWKBReader** reader) {
void *reader_ptr;
int p = next_pointer(command, 2, "gwkbreader", &reader_ptr);
if(p) {
return p;
}
*reader = (GEOSWKBReader *)reader_ptr;
return 0;
}