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Comparing deliantra/server/socket/loop.C (file contents):
Revision 1.21 by root, Sat Dec 16 03:21:08 2006 UTC vs.
Revision 1.47 by root, Sat May 12 22:04:20 2007 UTC

1/* 1/*
2 CrossFire, A Multiplayer game for X-windows 2 * CrossFire, A Multiplayer game for X-windows
3 3 *
4 * Copyright (C) 2005, 2006, 2007 Marc Lehmann & Crossfire+ Development Team
4 Copyright (C) 2002-2003 Mark Wedel & The Crossfire Development Team 5 * Copyright (C) 2002-2003 Mark Wedel & The Crossfire Development Team
5 Copyright (C) 1992 Frank Tore Johansen 6 * Copyright (C) 1992 Frank Tore Johansen
6 7 *
7 This program is free software; you can redistribute it and/or modify 8 * This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by 9 * it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or 10 * the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version. 11 * (at your option) any later version.
11 12 *
12 This program is distributed in the hope that it will be useful, 13 * This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of 14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details. 16 * GNU General Public License for more details.
16 17 *
17 You should have received a copy of the GNU General Public License 18 * You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software 19 * along with this program; if not, write to the Free Software
19 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. 20 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 21 *
21 The author can be reached via e-mail to <crossfire@schmorp.de> 22 * The author can be reached via e-mail to <crossfire@schmorp.de>
22*/ 23 */
23 24
24/** 25/**
25 * \file 26 * \file
26 * Main client/server loops. 27 * Main client/server loops.
27 * 28 *
28 * \date 2003-12-02 29 * \date 2003-12-02
29 * 30 *
30 * loop.c mainly deals with initialization and higher level socket 31 * loop.c mainly deals with initialization and higher level socket
31 * maintenance (checking for lost connections and if data has arrived.) 32 * maintanance (checking for lost connections and if data has arrived.)
32 * The reading of data is handled in ericserver.c
33 */ 33 */
34 34
35#define BG_SCRUB_RATE 4 // how often to send a face in the background
35 36
36#include <global.h> 37#include <global.h>
37#include <sproto.h> 38#include <sproto.h>
38#include <sockproto.h> 39#include <sockproto.h>
39 40
… …
47#include <arpa/inet.h> 48#include <arpa/inet.h>
48 49
49#include <loader.h> 50#include <loader.h>
50 51
51#define MAX_QUEUE_DEPTH 500 //TODO 52#define MAX_QUEUE_DEPTH 500 //TODO
52#define MAX_QUEUE_BACKLOG 2 //TODO 53#define MAX_QUEUE_BACKLOG 3. //TODO
53 54
54void 55void
55client::reset_state () 56client::reset_state ()
56{ 57{
57 if (!pl) 58 if (!pl)
… …
70 { 71 {
71 //TODO: just disconnect here? 72 //TODO: just disconnect here?
72 reset_state (); 73 reset_state ();
73 send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED); 74 send_packet_printf ("drawinfo %d command queue overflow, ignoring.", NDI_RED);
74 } 75 }
75 else if (!cmd_queue.empty () && cmd_queue.front ().stamp + MAX_QUEUE_BACKLOG < stamp)
76 {
77 reset_state ();
78 send_packet_printf ("drawinfo %d too many commands in queue, ignoring.", NDI_RED);
79 }
80 else 76 else
77 {
81 cmd_queue.push_back (command ( 78 cmd_queue.push_back (command ());
82 stamp, handler, (char *)salloc (datalen, data), datalen 79 command &cmd = cmd_queue.back ();
83 )); 80 cmd.stamp = stamp;
81 cmd.handler = handler;
82 cmd.data = salloc<char> (datalen + 1, data);
83 cmd.datalen = datalen;
84 }
84} 85}
85 86
86bool 87bool
87client::handle_command () 88client::handle_command ()
88{ 89{
89 if (pl && pl->state == ST_PLAYING && pl->ob && pl->ob->speed_left < 0) 90 bool skipping = false;
90 return false;
91 91
92 if (cmd_queue.empty ()) 92 while (!cmd_queue.empty ()
93 return false; 93 && !(state == ST_PLAYING && pl->ob && pl->ob->speed_left <= 0.f))
94 94 {
95 command &cmd = cmd_queue.front (); 95 command &cmd = cmd_queue.front ();
96 96
97 if (cmd.stamp + MAX_QUEUE_BACKLOG < now ()) 97 if (cmd.stamp + MAX_QUEUE_BACKLOG < now ())
98 { 98 {
99 if (!skipping)
100 {
101 skipping = true;
99 reset_state (); 102 reset_state ();
100 send_packet_printf ("drawinfo %d ignoring delayed command.", NDI_RED); 103 send_packet_printf ("drawinfo %d ignoring delayed commands.", NDI_RED);
101 } 104 }
105
106 cmd_queue.pop_front ();
107 }
102 else 108 else
109 {
103 execute (cmd.handler, cmd.data, cmd.datalen); 110 execute (cmd.handler, cmd.data, cmd.datalen);
104
105 sfree (cmd.data, cmd.datalen);
106 cmd_queue.pop_front (); 111 cmd_queue.pop_front ();
107
108 return true; 112 return true;
113 }
114 }
115
116 return false;
109} 117}
110 118
111void 119void
112flush_sockets (void) 120flush_sockets (void)
113{ 121{
114 for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i) 122 for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i)
115 if ((*i)->status != Ns_Dead)
116 (*i)->flush (); 123 (*i)->flush ();
117} 124}
118 125
119/** 126/**
120 * This checks the sockets for input, does the right thing. 127 * This checks the sockets for input, does the right thing.
121 * 128 *
… …
129#ifdef CS_LOGSTATS 136#ifdef CS_LOGSTATS
130 if ((time (NULL) - cst_lst.time_start) >= CS_LOGTIME) 137 if ((time (NULL) - cst_lst.time_start) >= CS_LOGTIME)
131 write_cs_stats (); 138 write_cs_stats ();
132#endif 139#endif
133 140
134 /* Go through the players. Let the loop set the next pl value, 141 //TODO: should not be done here, either
135 * since we may remove some 142 for (unsigned i = 0; i < clients.size (); ++i)
143 {
144 client *ns = clients [i];
145
146 ns->tick ();
147 ns->refcnt_chk ();
148 }
149}
150
151void
152client::tick ()
153{
154 if (!pl || destroyed ())
155 return;
156
157 /* Update the players stats once per tick. More efficient than
158 * sending them whenever they change, and probably just as useful
136 */ 159 */
137 //TODO: must be handled cleanly elsewhere 160 esrv_update_stats (pl);
138 for (player *pl = first_player; pl; ) 161
162 if (last_weight != -1 && last_weight != WEIGHT (pl->ob))
163 {
164 esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob);
165 if (last_weight != WEIGHT (pl->ob))
166 LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n",
167 (unsigned long) last_weight, WEIGHT (pl->ob));
139 { 168 }
140 player *npl = pl->next;
141 169
142 //TODO: must be handled cleanly elsewhere 170 draw_client_map (pl->ob);
143 if (!pl->socket || pl->socket->status == Ns_Dead) 171
172 if (update_look)
173 esrv_draw_look (pl->ob);
174
175 if (askface.empty () && !partial_face_ofs)
176 {
177 // regularly send a new face when queue is empty
178 if (bg_scrub && !--bg_scrub && enable_bg_scrub)
179 while (scrub_idx < faces.size () - 1)
180 {
181 ++scrub_idx;
182 if (!faces_sent [scrub_idx])
183 {
184 send_face (scrub_idx);
185 flush_fx ();
186
187 bg_scrub = 1; // send up to one face per tick, unless an image was requested
188 break;
189 }
190 }
191
192 rate_avail = max_rate - outputbuffer_len ();
193 }
194 else
195 {
196 int ol = outputbuffer_len ();
197
198 rate_avail = min (max_rate, rate_avail + max_rate);
199 rate_avail -= ol;
200
201 int avail = rate_avail;
202
203 // if we can split images, transfer up to mss packets if possible
204 // but never more 768 bytes more.
205 if (fxix) avail += min (768, mss - (ol % mss));
206
207 bg_scrub = BG_SCRUB_RATE;
208
209 while (avail > 0)
144 { 210 {
145 save_player (pl->ob, 0); 211 if (partial_face_ofs)
146
147 if (!QUERY_FLAG (pl->ob, FLAG_REMOVED))
148 { 212 {
149 terminate_all_pets (pl->ob); 213 if (facedata *d = face_data (partial_face, faceset))
150 pl->ob->remove (); 214 {
215 // 9 bytes is enough for fx_FFFOOO, 40 leaves some room
216 int chunk = min (min (avail - 40, MAXSOCKBUF - 9), partial_face_ofs);
217
218 if (chunk <= 0)
219 break;
220
221 partial_face_ofs -= chunk;
222
223 packet sl ("ix");
224
225 sl << ber32 (partial_face)
226 << ber32 (partial_face_ofs)
227 << data (d->data.data () + partial_face_ofs, chunk);
228
229 send_packet (sl);
230 }
231 else
232 partial_face_ofs = 0;
151 } 233 }
234 else if (!askface.empty ())
235 {
236 // use a lifo to send most recently requested images
237 faceidx facenum = askface.back ();
238 askface.pop_back ();
152 239
153 leave (pl, 1); 240 if (fxix)
154 final_free_player (pl); 241 {
242 if (facedata *d = face_data (facenum, faceset))
243 {
244 partial_face = facenum;
245 partial_face_ofs = d->data.size ();
246 }
247 }
248 else
249 send_image (facenum);
250 }
251 else
252 break;
253
254 int consumed = ol - outputbuffer_len ();
255 avail -= consumed;
256 rate_avail -= consumed;
155 } 257 }
156
157 pl = npl;
158 }
159
160 for (sockvec::iterator i = clients.begin (); i != clients.end (); )
161 { 258 }
162 client *s = *i;
163
164 if (s->status == Ns_Dead)
165 {
166 clients.erase (i);
167 delete s;
168 }
169 else
170 ++i;
171 }
172
173 /* We need to do some of the processing below regardless */
174
175 /* Check for any input on the sockets */
176 for (sockvec::iterator i = clients.begin (); i != clients.end (); ++i)
177 {
178 client *s = *i;
179 player *pl = s->pl;
180
181 s->handle_packet ();
182 s->handle_command ();
183
184 //TODO: should not be done here, either
185 if (s->status != Ns_Dead && pl)
186 {
187 /* Update the players stats once per tick. More efficient than
188 * sending them whenever they change, and probably just as useful
189 */
190 esrv_update_stats (pl);
191
192 if (pl->last_weight != -1 && pl->last_weight != WEIGHT (pl->ob))
193 {
194 esrv_update_item (UPD_WEIGHT, pl->ob, pl->ob);
195 if (pl->last_weight != WEIGHT (pl->ob))
196 LOG (llevError, "esrv_update_item(UPD_WEIGHT) did not set player weight: is %lu, should be %lu\n",
197 (unsigned long) pl->last_weight, WEIGHT (pl->ob));
198 }
199
200 draw_client_map (pl->ob);
201
202 if (s->update_look)
203 esrv_draw_look (pl->ob);
204 }
205 }
206} 259}
207 260

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