+ XCBGenericRep genrep;
+ int length = 32;
+ void *buf;
+ pending_reply *pend = 0;
+ struct event_list *event;
+
+ /* Wait for there to be enough data for us to read a whole packet */
+ if(c->in.queue_len < length)
+ return 0;
+
+ /* Get the response type, length, and sequence number. */
+ memcpy(&genrep, c->in.queue, sizeof(genrep));
+
+ /* Compute 32-bit sequence number of this packet. */
+ if((genrep.response_type & 0x7f) != XCBKeymapNotify)
+ {
+ int lastread = c->in.request_read;
+ c->in.request_read = (lastread & 0xffff0000) | genrep.sequence;
+ if(c->in.request_read < lastread)
+ c->in.request_read += 0x10000;
+ if(c->in.request_read > c->in.request_expected)
+ c->in.request_expected = c->in.request_read;
+
+ if(c->in.request_read != lastread)
+ {
+ if(c->in.current_reply)
+ {
+ _xcb_map_put(c->in.replies, lastread, c->in.current_reply);
+ c->in.current_reply = 0;
+ c->in.current_reply_tail = &c->in.current_reply;
+ }
+ c->in.request_completed = c->in.request_read - 1;
+ }
+ if(genrep.response_type != XCBReply) /* error or event */
+ c->in.request_completed = c->in.request_read; /* XXX: does event/error imply no more replies? */
+
+ while(c->in.pending_replies && c->in.pending_replies->request <= c->in.request_completed)
+ {
+ pending_reply *oldpend = c->in.pending_replies;
+ c->in.pending_replies = oldpend->next;
+ if(!oldpend->next)
+ c->in.pending_replies_tail = &c->in.pending_replies;
+ free(oldpend);
+ }
+ }
+
+ if(genrep.response_type == XCBError || genrep.response_type == XCBReply)
+ {
+ pend = c->in.pending_replies;
+ if(pend && pend->request != c->in.request_read)
+ pend = 0;
+ }
+
+ /* For reply packets, check that the entire packet is available. */
+ if(genrep.response_type == XCBReply)
+ {
+ if(pend && pend->workaround == WORKAROUND_GLX_GET_FB_CONFIGS_BUG)
+ {
+ CARD32 *p = (CARD32 *) c->in.queue;
+ genrep.length = p[2] * p[3] * 2;
+ }
+ length += genrep.length * 4;
+ }
+
+ buf = malloc(length + (genrep.response_type == XCBReply ? 0 : sizeof(CARD32)));
+ if(!buf)
+ return 0;
+ if(_xcb_in_read_block(c, buf, length) <= 0)
+ {
+ free(buf);
+ return 0;
+ }
+ if(pend && (pend->flags & XCB_REQUEST_DISCARD_REPLY))
+ {
+ free(buf);
+ return 1;
+ }
+
+ if(genrep.response_type != XCBReply)
+ ((XCBGenericEvent *) buf)->full_sequence = c->in.request_read;
+
+ /* reply, or checked error */
+ if( genrep.response_type == XCBReply ||
+ (genrep.response_type == XCBError && pend && (pend->flags & XCB_REQUEST_CHECKED)))
+ {
+ reader_list *reader;
+ struct reply_list *cur = malloc(sizeof(struct reply_list));
+ if(!cur)
+ return 0;
+ cur->reply = buf;
+ cur->next = 0;
+ *c->in.current_reply_tail = cur;
+ c->in.current_reply_tail = &cur->next;
+ for(reader = c->in.readers; reader && reader->request <= c->in.request_read; reader = reader->next)
+ if(reader->request == c->in.request_read)
+ {
+ pthread_cond_signal(reader->data);
+ break;
+ }
+ return 1;
+ }
+
+ /* event, or unchecked error */
+ event = malloc(sizeof(struct event_list));
+ if(!event)
+ {
+ free(buf);
+ return 0;
+ }
+ event->event = buf;
+ event->next = 0;
+ *c->in.events_tail = event;
+ c->in.events_tail = &event->next;
+ pthread_cond_signal(&c->in.event_cond);
+ return 1; /* I have something for you... */