San Mehat | a430b2b | 2014-09-23 08:30:51 -0700 | [diff] [blame] | 1 | /* |
| 2 | Copyright (C) 2002-2010 Karl J. Runge <runge@karlrunge.com> |
| 3 | All rights reserved. |
| 4 | |
| 5 | This file is part of x11vnc. |
| 6 | |
| 7 | x11vnc 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 | the Free Software Foundation; either version 2 of the License, or (at |
| 10 | your option) any later version. |
| 11 | |
| 12 | x11vnc is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with x11vnc; if not, write to the Free Software |
| 19 | Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA |
| 20 | or see <http://www.gnu.org/licenses/>. |
| 21 | |
| 22 | In addition, as a special exception, Karl J. Runge |
| 23 | gives permission to link the code of its release of x11vnc with the |
| 24 | OpenSSL project's "OpenSSL" library (or with modified versions of it |
| 25 | that use the same license as the "OpenSSL" library), and distribute |
| 26 | the linked executables. You must obey the GNU General Public License |
| 27 | in all respects for all of the code used other than "OpenSSL". If you |
| 28 | modify this file, you may extend this exception to your version of the |
| 29 | file, but you are not obligated to do so. If you do not wish to do |
| 30 | so, delete this exception statement from your version. |
| 31 | */ |
| 32 | |
| 33 | /* -- rates.c -- */ |
| 34 | |
| 35 | #include "x11vnc.h" |
| 36 | #include "xwrappers.h" |
| 37 | #include "scan.h" |
| 38 | |
| 39 | int measure_speeds = 1; |
| 40 | int speeds_net_rate = 0; |
| 41 | int speeds_net_rate_measured = 0; |
| 42 | int speeds_net_latency = 0; |
| 43 | int speeds_net_latency_measured = 0; |
| 44 | int speeds_read_rate = 0; |
| 45 | int speeds_read_rate_measured = 0; |
| 46 | |
| 47 | |
| 48 | int get_cmp_rate(void); |
| 49 | int get_raw_rate(void); |
| 50 | void initialize_speeds(void); |
| 51 | int get_read_rate(void); |
| 52 | int link_rate(int *latency, int *netrate); |
| 53 | int get_net_rate(void); |
| 54 | int get_net_latency(void); |
| 55 | void measure_send_rates(int init); |
| 56 | |
| 57 | |
| 58 | static void measure_display_hook(rfbClientPtr cl); |
| 59 | static int get_rate(int which); |
| 60 | static int get_latency(void); |
| 61 | |
| 62 | |
| 63 | static void measure_display_hook(rfbClientPtr cl) { |
| 64 | ClientData *cd = (ClientData *) cl->clientData; |
| 65 | if (! cd) { |
| 66 | return; |
| 67 | } |
| 68 | dtime0(&cd->timer); |
| 69 | } |
| 70 | |
| 71 | static int get_rate(int which) { |
| 72 | rfbClientIteratorPtr iter; |
| 73 | rfbClientPtr cl; |
| 74 | int irate, irate_min = 1; /* 1 KB/sec */ |
| 75 | int irate_max = 100000; /* 100 MB/sec */ |
| 76 | int count = 0; |
| 77 | double slowest = -1.0, rate; |
| 78 | static double save_rate = 1000 * NETRATE0; |
| 79 | |
| 80 | if (!screen) { |
| 81 | return 0; |
| 82 | } |
| 83 | |
| 84 | iter = rfbGetClientIterator(screen); |
| 85 | while( (cl = rfbClientIteratorNext(iter)) ) { |
| 86 | ClientData *cd = (ClientData *) cl->clientData; |
| 87 | |
| 88 | if (! cd) { |
| 89 | continue; |
| 90 | } |
| 91 | if (cl->state != RFB_NORMAL) { |
| 92 | continue; |
| 93 | } |
| 94 | if (cd->send_cmp_rate == 0.0 || cd->send_raw_rate == 0.0) { |
| 95 | continue; |
| 96 | } |
| 97 | count++; |
| 98 | |
| 99 | if (which == 0) { |
| 100 | rate = cd->send_cmp_rate; |
| 101 | } else { |
| 102 | rate = cd->send_raw_rate; |
| 103 | } |
| 104 | if (slowest == -1.0 || rate < slowest) { |
| 105 | slowest = rate; |
| 106 | } |
| 107 | |
| 108 | } |
| 109 | rfbReleaseClientIterator(iter); |
| 110 | |
| 111 | if (! count) { |
| 112 | return NETRATE0; |
| 113 | } |
| 114 | |
| 115 | if (slowest == -1.0) { |
| 116 | slowest = save_rate; |
| 117 | } else { |
| 118 | save_rate = slowest; |
| 119 | } |
| 120 | |
| 121 | irate = (int) (slowest/1000.0); |
| 122 | if (irate < irate_min) { |
| 123 | irate = irate_min; |
| 124 | } |
| 125 | if (irate > irate_max) { |
| 126 | irate = irate_max; |
| 127 | } |
| 128 | if (0) fprintf(stderr, "get_rate(%d) %d %.3f/%.3f\n", which, irate, save_rate, slowest); |
| 129 | |
| 130 | return irate; |
| 131 | } |
| 132 | |
| 133 | static int get_latency(void) { |
| 134 | rfbClientIteratorPtr iter; |
| 135 | rfbClientPtr cl; |
| 136 | int ilat, ilat_min = 1; /* 1 ms */ |
| 137 | int ilat_max = 2000; /* 2 sec */ |
| 138 | double slowest = -1.0, lat; |
| 139 | static double save_lat = ((double) LATENCY0)/1000.0; |
| 140 | int count = 0; |
| 141 | |
| 142 | if (!screen) { |
| 143 | return 0; |
| 144 | } |
| 145 | |
| 146 | iter = rfbGetClientIterator(screen); |
| 147 | while( (cl = rfbClientIteratorNext(iter)) ) { |
| 148 | ClientData *cd = (ClientData *) cl->clientData; |
| 149 | |
| 150 | if (! cd) { |
| 151 | continue; |
| 152 | } |
| 153 | if (cl->state != RFB_NORMAL) { |
| 154 | continue; |
| 155 | } |
| 156 | if (cd->latency == 0.0) { |
| 157 | continue; |
| 158 | } |
| 159 | count++; |
| 160 | |
| 161 | lat = cd->latency; |
| 162 | if (slowest == -1.0 || lat > slowest) { |
| 163 | slowest = lat; |
| 164 | } |
| 165 | } |
| 166 | rfbReleaseClientIterator(iter); |
| 167 | |
| 168 | if (! count) { |
| 169 | return LATENCY0; |
| 170 | } |
| 171 | |
| 172 | if (slowest == -1.0) { |
| 173 | slowest = save_lat; |
| 174 | } else { |
| 175 | save_lat = slowest; |
| 176 | } |
| 177 | |
| 178 | ilat = (int) (slowest * 1000.0); |
| 179 | if (ilat < ilat_min) { |
| 180 | ilat = ilat_min; |
| 181 | } |
| 182 | if (ilat > ilat_max) { |
| 183 | ilat = ilat_max; |
| 184 | } |
| 185 | |
| 186 | return ilat; |
| 187 | } |
| 188 | |
| 189 | int get_cmp_rate(void) { |
| 190 | return get_rate(0); |
| 191 | } |
| 192 | |
| 193 | int get_raw_rate(void) { |
| 194 | return get_rate(1); |
| 195 | } |
| 196 | |
| 197 | void initialize_speeds(void) { |
| 198 | char *s, *s_in, *p; |
| 199 | int i; |
| 200 | |
| 201 | speeds_read_rate = 0; |
| 202 | speeds_net_rate = 0; |
| 203 | speeds_net_latency = 0; |
| 204 | if (! speeds_str || *speeds_str == '\0') { |
| 205 | s_in = strdup(""); |
| 206 | } else { |
| 207 | s_in = strdup(speeds_str); |
| 208 | } |
| 209 | |
| 210 | if (!strcmp(s_in, "modem")) { |
| 211 | s = strdup("6,4,200"); |
| 212 | } else if (!strcmp(s_in, "dsl")) { |
| 213 | s = strdup("6,100,50"); |
| 214 | } else if (!strcmp(s_in, "lan")) { |
| 215 | s = strdup("6,5000,1"); |
| 216 | } else { |
| 217 | s = strdup(s_in); |
| 218 | } |
| 219 | |
| 220 | p = strtok(s, ","); |
| 221 | i = 0; |
| 222 | while (p) { |
| 223 | double val; |
| 224 | if (*p != '\0') { |
| 225 | val = atof(p); |
| 226 | if (i==0) { |
| 227 | speeds_read_rate = (int) 1000000 * val; |
| 228 | } else if (i==1) { |
| 229 | speeds_net_rate = (int) 1000 * val; |
| 230 | } else if (i==2) { |
| 231 | speeds_net_latency = (int) val; |
| 232 | } |
| 233 | } |
| 234 | i++; |
| 235 | p = strtok(NULL, ","); |
| 236 | } |
| 237 | free(s); |
| 238 | free(s_in); |
| 239 | |
| 240 | if (! speeds_read_rate) { |
| 241 | int n = 0; |
| 242 | double dt, timer; |
| 243 | #ifdef MACOSX |
| 244 | if (macosx_console && macosx_read_opengl && fullscreen) { |
| 245 | copy_image(fullscreen, 0, 0, 0, 0); |
| 246 | usleep(10 * 1000); |
| 247 | } |
| 248 | #endif |
| 249 | |
| 250 | dtime0(&timer); |
| 251 | if (fullscreen) { |
| 252 | copy_image(fullscreen, 0, 0, 0, 0); |
| 253 | n = fullscreen->bytes_per_line * fullscreen->height; |
| 254 | } else if (scanline) { |
| 255 | copy_image(scanline, 0, 0, 0, 0); |
| 256 | n = scanline->bytes_per_line * scanline->height; |
| 257 | } |
| 258 | dt = dtime(&timer); |
| 259 | if (n && dt > 0.0) { |
| 260 | double rate = ((double) n) / dt; |
| 261 | speeds_read_rate_measured = (int) (rate/1000000.0); |
| 262 | if (speeds_read_rate_measured < 1) { |
| 263 | speeds_read_rate_measured = 1; |
| 264 | } else { |
| 265 | rfbLog("fb read rate: %d MB/sec\n", |
| 266 | speeds_read_rate_measured); |
| 267 | } |
| 268 | } |
| 269 | } |
| 270 | } |
| 271 | |
| 272 | int get_read_rate(void) { |
| 273 | if (speeds_read_rate) { |
| 274 | return speeds_read_rate; |
| 275 | } |
| 276 | if (speeds_read_rate_measured) { |
| 277 | return speeds_read_rate_measured; |
| 278 | } |
| 279 | return 0; |
| 280 | } |
| 281 | |
| 282 | int link_rate(int *latency, int *netrate) { |
| 283 | *latency = get_net_latency(); |
| 284 | *netrate = get_net_rate(); |
| 285 | |
| 286 | if (speeds_str) { |
| 287 | if (!strcmp(speeds_str, "modem")) { |
| 288 | return LR_DIALUP; |
| 289 | } else if (!strcmp(speeds_str, "dsl")) { |
| 290 | return LR_BROADBAND; |
| 291 | } else if (!strcmp(speeds_str, "lan")) { |
| 292 | return LR_LAN; |
| 293 | } |
| 294 | } |
| 295 | |
| 296 | if (*latency == LATENCY0 && *netrate == NETRATE0) { |
| 297 | return LR_UNSET; |
| 298 | } else if (*latency > 150 || *netrate < 20) { |
| 299 | return LR_DIALUP; |
| 300 | } else if (*latency > 50 || *netrate < 150) { |
| 301 | return LR_BROADBAND; |
| 302 | } else if (*latency < 10 && *netrate > 300) { |
| 303 | return LR_LAN; |
| 304 | } else { |
| 305 | return LR_UNKNOWN; |
| 306 | } |
| 307 | } |
| 308 | |
| 309 | int get_net_rate(void) { |
| 310 | int spm = speeds_net_rate_measured; |
| 311 | if (speeds_net_rate) { |
| 312 | return speeds_net_rate; |
| 313 | } |
| 314 | if (! spm || spm == NETRATE0) { |
| 315 | speeds_net_rate_measured = get_cmp_rate(); |
| 316 | } |
| 317 | if (speeds_net_rate_measured) { |
| 318 | return speeds_net_rate_measured; |
| 319 | } |
| 320 | return 0; |
| 321 | } |
| 322 | |
| 323 | int get_net_latency(void) { |
| 324 | int spm = speeds_net_latency_measured; |
| 325 | if (speeds_net_latency) { |
| 326 | return speeds_net_latency; |
| 327 | } |
| 328 | if (! spm || spm == LATENCY0) { |
| 329 | speeds_net_latency_measured = get_latency(); |
| 330 | } |
| 331 | if (speeds_net_latency_measured) { |
| 332 | return speeds_net_latency_measured; |
| 333 | } |
| 334 | return 0; |
| 335 | } |
| 336 | |
| 337 | void measure_send_rates(int init) { |
| 338 | double cmp_rate, raw_rate; |
| 339 | static double now, start = 0.0; |
| 340 | static rfbDisplayHookPtr orig_display_hook = NULL; |
| 341 | double cmp_max = 1.0e+08; /* 100 MB/sec */ |
| 342 | double cmp_min = 1000.0; /* 9600baud */ |
| 343 | double lat_max = 5.0; /* 5 sec */ |
| 344 | double lat_min = .0005; /* 0.5 ms */ |
| 345 | int min_cmp = 10000, nclients; |
| 346 | rfbClientIteratorPtr iter; |
| 347 | rfbClientPtr cl0, cl; |
| 348 | int msg = 0, clcnt0 = 0, cc; |
| 349 | int db = 0, ouch_db = 0, ouch = 0; |
| 350 | |
| 351 | if (! measure_speeds) { |
| 352 | return; |
| 353 | } |
| 354 | if (speeds_net_rate && speeds_net_latency) { |
| 355 | return; |
| 356 | } |
| 357 | if (!client_count) { |
| 358 | return; |
| 359 | } |
| 360 | |
| 361 | if (! orig_display_hook) { |
| 362 | orig_display_hook = screen->displayHook; |
| 363 | } |
| 364 | |
| 365 | if (start == 0.0) { |
| 366 | dtime(&start); |
| 367 | } |
| 368 | |
| 369 | dtime0(&now); |
| 370 | if (now < last_client_gone+4.0) { |
| 371 | return; |
| 372 | } |
| 373 | now = now - start; |
| 374 | |
| 375 | nclients = 0; |
| 376 | |
| 377 | if (!screen) { |
| 378 | return; |
| 379 | } |
| 380 | |
| 381 | cl0 = NULL; |
| 382 | iter = rfbGetClientIterator(screen); |
| 383 | while( (cl = rfbClientIteratorNext(iter)) ) { |
| 384 | ClientData *cd = (ClientData *) cl->clientData; |
| 385 | |
| 386 | if (! cd) { |
| 387 | continue; |
| 388 | } |
| 389 | if (cd->send_cmp_rate > 0.0) { |
| 390 | continue; |
| 391 | } |
| 392 | if (cl->onHold) { |
| 393 | continue; |
| 394 | } |
| 395 | nclients++; |
| 396 | if (cl0 == NULL) { |
| 397 | cl0 = cl; |
| 398 | } |
| 399 | } |
| 400 | rfbReleaseClientIterator(iter); |
| 401 | |
| 402 | cl = cl0; |
| 403 | cc = 0; |
| 404 | |
| 405 | while (cl != NULL && cc++ == 0) { |
| 406 | int defer, i, cbs, rbs; |
| 407 | char *httpdir; |
| 408 | double dt, dt1 = 0.0, dt2, dt3; |
| 409 | double tm, spin_max = 15.0, spin_lat_max = 1.5; |
| 410 | int got_t2 = 0, got_t3 = 0; |
| 411 | ClientData *cd = (ClientData *) cl->clientData; |
| 412 | |
| 413 | #if 0 |
| 414 | for (i=0; i<MAX_ENCODINGS; i++) { |
| 415 | cbs += cl->bytesSent[i]; |
| 416 | } |
| 417 | rbs = cl->rawBytesEquivalent; |
| 418 | #else |
| 419 | #if LIBVNCSERVER_HAS_STATS |
| 420 | cbs = rfbStatGetSentBytes(cl); |
| 421 | rbs = rfbStatGetSentBytesIfRaw(cl); |
| 422 | #endif |
| 423 | #endif |
| 424 | |
| 425 | if (init) { |
| 426 | |
| 427 | if (db) fprintf(stderr, "%d client num rects req: %d mod: %d cbs: %d " |
| 428 | "rbs: %d dt1: %.3f t: %.3f\n", init, |
| 429 | (int) sraRgnCountRects(cl->requestedRegion), |
| 430 | (int) sraRgnCountRects(cl->modifiedRegion), cbs, rbs, dt1, now); |
| 431 | |
| 432 | cd->timer = dnow(); |
| 433 | cd->cmp_bytes_sent = cbs; |
| 434 | cd->raw_bytes_sent = rbs; |
| 435 | continue; |
| 436 | } |
| 437 | |
| 438 | /* first part of the bulk transfer of initial screen */ |
| 439 | dt1 = dtime(&cd->timer); |
| 440 | |
| 441 | if (db) fprintf(stderr, "%d client num rects req: %d mod: %d cbs: %d " |
| 442 | "rbs: %d dt1: %.3f t: %.3f\n", init, |
| 443 | (int) sraRgnCountRects(cl->requestedRegion), |
| 444 | (int) sraRgnCountRects(cl->modifiedRegion), cbs, rbs, dt1, now); |
| 445 | |
| 446 | if (dt1 <= 0.0) { |
| 447 | continue; |
| 448 | } |
| 449 | |
| 450 | cbs = cbs - cd->cmp_bytes_sent; |
| 451 | rbs = rbs - cd->raw_bytes_sent; |
| 452 | |
| 453 | if (cbs < min_cmp) { |
| 454 | continue; |
| 455 | } |
| 456 | |
| 457 | if (ouch_db) fprintf(stderr, "START-OUCH: %d\n", client_count); |
| 458 | clcnt0 = client_count; |
| 459 | #define OUCH ( ouch || (ouch = (!client_count || client_count != clcnt0 || dnow() < last_client_gone+4.0)) ) |
| 460 | |
| 461 | rfbPE(1000); |
| 462 | if (OUCH && ouch_db) fprintf(stderr, "***OUCH-A\n"); |
| 463 | if (OUCH) continue; |
| 464 | |
| 465 | if (use_threads) LOCK(cl->updateMutex); |
| 466 | |
| 467 | if (sraRgnCountRects(cl->modifiedRegion)) { |
| 468 | rfbPE(1000); |
| 469 | if (OUCH && ouch_db) fprintf(stderr, "***OUCH-B\n"); |
| 470 | if (use_threads) UNLOCK(cl->updateMutex); |
| 471 | if (OUCH) continue; |
| 472 | } |
| 473 | |
| 474 | if (use_threads) UNLOCK(cl->updateMutex); |
| 475 | |
| 476 | defer = screen->deferUpdateTime; |
| 477 | httpdir = screen->httpDir; |
| 478 | screen->deferUpdateTime = 0; |
| 479 | screen->httpDir = NULL; |
| 480 | |
| 481 | /* mark a small rectangle: */ |
| 482 | mark_rect_as_modified(0, 0, 16, 16, 1); |
| 483 | |
| 484 | dtime0(&tm); |
| 485 | |
| 486 | dt2 = 0.0; |
| 487 | dt3 = 0.0; |
| 488 | |
| 489 | if (dt1 < 0.25) { |
| 490 | /* try to cut it down to avoid long pauses. */ |
| 491 | spin_max = 5.0; |
| 492 | } |
| 493 | |
| 494 | /* when req1 = 1 mod1 == 0, end of 2nd part of bulk transfer */ |
| 495 | while (1) { |
| 496 | int req0, req1, mod0, mod1; |
| 497 | |
| 498 | if (OUCH && ouch_db) fprintf(stderr, "***OUCH-C1\n"); |
| 499 | if (OUCH) break; |
| 500 | |
| 501 | if (use_threads) LOCK(cl->updateMutex); |
| 502 | |
| 503 | req0 = sraRgnCountRects(cl->requestedRegion); |
| 504 | mod0 = sraRgnCountRects(cl->modifiedRegion); |
| 505 | |
| 506 | if (use_threads) UNLOCK(cl->updateMutex); |
| 507 | |
| 508 | if (use_threads) { |
| 509 | usleep(1000); |
| 510 | } else { |
| 511 | if (mod0) { |
| 512 | rfbPE(1000); |
| 513 | } else { |
| 514 | rfbCFD(1000); |
| 515 | } |
| 516 | } |
| 517 | dt = dtime(&tm); |
| 518 | dt2 += dt; |
| 519 | if (dt2 > spin_max) { |
| 520 | break; |
| 521 | } |
| 522 | |
| 523 | if (OUCH && ouch_db) fprintf(stderr, "***OUCH-C2\n"); |
| 524 | if (OUCH) break; |
| 525 | |
| 526 | if (use_threads) LOCK(cl->updateMutex); |
| 527 | |
| 528 | req1 = sraRgnCountRects(cl->requestedRegion); |
| 529 | mod1 = sraRgnCountRects(cl->modifiedRegion); |
| 530 | |
| 531 | if (use_threads) UNLOCK(cl->updateMutex); |
| 532 | |
| 533 | if (db) fprintf(stderr, "dt2 calc: num rects req: %d/%d mod: %d/%d " |
| 534 | "fbu-sent: %d dt: %.4f dt2: %.4f tm: %.4f\n", |
| 535 | req0, req1, mod0, mod1, |
| 536 | #if 0 |
| 537 | cl->framebufferUpdateMessagesSent, |
| 538 | #else |
| 539 | #if LIBVNCSERVER_HAS_STATS |
| 540 | rfbStatGetMessageCountSent(cl, rfbFramebufferUpdate), |
| 541 | #endif |
| 542 | #endif |
| 543 | dt, dt2, tm); |
| 544 | if (req1 != 0 && mod1 == 0) { |
| 545 | got_t2 = 1; |
| 546 | break; |
| 547 | } |
| 548 | } |
| 549 | if (OUCH && ouch_db) fprintf(stderr, "***OUCH-D\n"); |
| 550 | if (OUCH) goto ouch; |
| 551 | |
| 552 | if (! got_t2) { |
| 553 | dt2 = 0.0; |
| 554 | } else { |
| 555 | int tr, trm = 3; |
| 556 | double dts[10]; |
| 557 | |
| 558 | /* |
| 559 | * Note: since often select(2) cannot sleep |
| 560 | * less than 1/HZ (e.g. 10ms), the resolution |
| 561 | * of the latency may be messed up by something |
| 562 | * of this order. Effect may occur on both ends, |
| 563 | * i.e. the viewer may not respond immediately. |
| 564 | */ |
| 565 | |
| 566 | for (tr = 0; tr < trm; tr++) { |
| 567 | usleep(5000); |
| 568 | |
| 569 | /* mark a 2nd small rectangle: */ |
| 570 | mark_rect_as_modified(0, 0, 16, 16, 1); |
| 571 | i = 0; |
| 572 | dtime0(&tm); |
| 573 | dt3 = 0.0; |
| 574 | |
| 575 | /* |
| 576 | * when req1 > 0 and mod1 == 0, we say |
| 577 | * that is the "ping" time. |
| 578 | */ |
| 579 | while (1) { |
| 580 | int req0, req1, mod0, mod1; |
| 581 | |
| 582 | if (use_threads) LOCK(cl->updateMutex); |
| 583 | |
| 584 | req0 = sraRgnCountRects(cl->requestedRegion); |
| 585 | mod0 = sraRgnCountRects(cl->modifiedRegion); |
| 586 | |
| 587 | if (use_threads) UNLOCK(cl->updateMutex); |
| 588 | |
| 589 | if (i == 0) { |
| 590 | rfbPE(0); |
| 591 | } else { |
| 592 | if (use_threads) { |
| 593 | usleep(1000); |
| 594 | } else { |
| 595 | /* try to get it all */ |
| 596 | rfbCFD(1000*1000); |
| 597 | } |
| 598 | } |
| 599 | if (OUCH && ouch_db) fprintf(stderr, "***OUCH-E\n"); |
| 600 | if (OUCH) goto ouch; |
| 601 | dt = dtime(&tm); |
| 602 | i++; |
| 603 | |
| 604 | dt3 += dt; |
| 605 | if (dt3 > spin_lat_max) { |
| 606 | break; |
| 607 | } |
| 608 | |
| 609 | if (use_threads) LOCK(cl->updateMutex); |
| 610 | |
| 611 | req1 = sraRgnCountRects(cl->requestedRegion); |
| 612 | mod1 = sraRgnCountRects(cl->modifiedRegion); |
| 613 | |
| 614 | if (use_threads) UNLOCK(cl->updateMutex); |
| 615 | |
| 616 | if (db) fprintf(stderr, "dt3 calc: num rects req: %d/%d mod: %d/%d " |
| 617 | "fbu-sent: %d dt: %.4f dt3: %.4f tm: %.4f\n", |
| 618 | req0, req1, mod0, mod1, |
| 619 | #if 0 |
| 620 | cl->framebufferUpdateMessagesSent, |
| 621 | #else |
| 622 | #if LIBVNCSERVER_HAS_STATS |
| 623 | rfbStatGetMessageCountSent(cl, rfbFramebufferUpdate), |
| 624 | #endif |
| 625 | #endif |
| 626 | dt, dt3, tm); |
| 627 | |
| 628 | if (req1 != 0 && mod1 == 0) { |
| 629 | dts[got_t3++] = dt3; |
| 630 | break; |
| 631 | } |
| 632 | } |
| 633 | } |
| 634 | |
| 635 | if (! got_t3) { |
| 636 | dt3 = 0.0; |
| 637 | } else { |
| 638 | if (got_t3 == 1) { |
| 639 | dt3 = dts[0]; |
| 640 | } else if (got_t3 == 2) { |
| 641 | dt3 = dts[1]; |
| 642 | } else { |
| 643 | if (dts[2] > 0.0) { |
| 644 | double rat = dts[1]/dts[2]; |
| 645 | if (rat > 0.5 && rat < 2.0) { |
| 646 | dt3 = dts[1]+dts[2]; |
| 647 | dt3 *= 0.5; |
| 648 | } else { |
| 649 | dt3 = dts[1]; |
| 650 | } |
| 651 | } else { |
| 652 | dt3 = dts[1]; |
| 653 | } |
| 654 | } |
| 655 | } |
| 656 | } |
| 657 | |
| 658 | ouch: |
| 659 | |
| 660 | screen->deferUpdateTime = defer; |
| 661 | screen->httpDir = httpdir; |
| 662 | |
| 663 | if (OUCH && ouch_db) fprintf(stderr, "***OUCH-F\n"); |
| 664 | if (OUCH) break; |
| 665 | |
| 666 | dt = dt1 + dt2; |
| 667 | |
| 668 | |
| 669 | if (dt3 <= dt2/2.0) { |
| 670 | /* guess only 1/2 a ping for reply... */ |
| 671 | dt = dt - dt3/2.0; |
| 672 | } |
| 673 | |
| 674 | cmp_rate = cbs/dt; |
| 675 | raw_rate = rbs/dt; |
| 676 | |
| 677 | if (cmp_rate > cmp_max) { |
| 678 | cmp_rate = cmp_max; |
| 679 | } |
| 680 | if (cmp_rate <= cmp_min) { |
| 681 | cmp_rate = cmp_min; |
| 682 | } |
| 683 | |
| 684 | cd->send_cmp_rate = cmp_rate; |
| 685 | cd->send_raw_rate = raw_rate; |
| 686 | |
| 687 | if (dt3 > lat_max) { |
| 688 | dt3 = lat_max; |
| 689 | } |
| 690 | if (dt3 <= lat_min) { |
| 691 | dt3 = lat_min; |
| 692 | } |
| 693 | |
| 694 | cd->latency = dt3; |
| 695 | |
| 696 | rfbLog("client %d network rate %.1f KB/sec (%.1f eff KB/sec)\n", |
| 697 | cd->uid, cmp_rate/1000.0, raw_rate/1000.0); |
| 698 | rfbLog("client %d latency: %.1f ms\n", cd->uid, 1000.0*dt3); |
| 699 | rfbLog("dt1: %.4f, dt2: %.4f dt3: %.4f bytes: %d\n", |
| 700 | dt1, dt2, dt3, cbs); |
| 701 | msg = 1; |
| 702 | } |
| 703 | |
| 704 | if (msg) { |
| 705 | int link, latency, netrate; |
| 706 | char *str = "error"; |
| 707 | |
| 708 | link = link_rate(&latency, &netrate); |
| 709 | if (link == LR_UNSET) { |
| 710 | str = "LR_UNSET"; |
| 711 | } else if (link == LR_UNKNOWN) { |
| 712 | str = "LR_UNKNOWN"; |
| 713 | } else if (link == LR_DIALUP) { |
| 714 | str = "LR_DIALUP"; |
| 715 | } else if (link == LR_BROADBAND) { |
| 716 | str = "LR_BROADBAND"; |
| 717 | } else if (link == LR_LAN) { |
| 718 | str = "LR_LAN"; |
| 719 | } |
| 720 | rfbLog("link_rate: %s - %d ms, %d KB/s\n", str, latency, |
| 721 | netrate); |
| 722 | } |
| 723 | |
| 724 | if (init) { |
| 725 | if (nclients) { |
| 726 | screen->displayHook = measure_display_hook; |
| 727 | } |
| 728 | } else { |
| 729 | screen->displayHook = orig_display_hook; |
| 730 | } |
| 731 | } |
| 732 | |