static void measure_display_hook(rfbClientPtr cl) {
ClientData *cd = (ClientData *) cl->clientData;
if (! cd) {
return;
}
dtime0(&cd->timer);
}
double dnow(void) {
double t;
return dtime0(&t);
}
void measure_send_rates(int init) {
double cmp_rate, raw_rate;
static double now, start = 0.0;
static rfbDisplayHookPtr orig_display_hook = NULL;
double cmp_max = 1.0e+08; /* 100 MB/sec */
double cmp_min = 1000.0; /* 9600baud */
double lat_max = 5.0; /* 5 sec */
double lat_min = .0005; /* 0.5 ms */
int min_cmp = 10000, nclients;
rfbClientIteratorPtr iter;
rfbClientPtr cl0, cl;
int msg = 0, clcnt0 = 0, cc;
int db = 0, ouch_db = 0, ouch = 0;
if (! measure_speeds) {
return;
}
if (speeds_net_rate && speeds_net_latency) {
return;
}
if (!client_count) {
return;
}
if (! orig_display_hook) {
orig_display_hook = screen->displayHook;
}
if (start == 0.0) {
dtime(&start);
}
dtime0(&now);
if (now < last_client_gone+4.0) {
return;
}
now = now - start;
nclients = 0;
if (!screen) {
return;
}
cl0 = NULL;
iter = rfbGetClientIterator(screen);
while( (cl = rfbClientIteratorNext(iter)) ) {
ClientData *cd = (ClientData *) cl->clientData;
if (! cd) {
continue;
}
if (cd->send_cmp_rate > 0.0) {
continue;
}
if (cl->onHold) {
continue;
}
nclients++;
if (cl0 == NULL) {
cl0 = cl;
}
}
rfbReleaseClientIterator(iter);
cl = cl0;
cc = 0;
while (cl != NULL && cc++ == 0) {
int defer, i, cbs, rbs;
char *httpdir;
double dt, dt1 = 0.0, dt2, dt3;
double tm, spin_max = 15.0, spin_lat_max = 1.5;
int got_t2 = 0, got_t3 = 0;
ClientData *cd = (ClientData *) cl->clientData;
#if 0
for (i=0; i<MAX_ENCODINGS; i++) {
cbs += cl->bytesSent[i];
}
rbs = cl->rawBytesEquivalent;
#else
#if LIBVNCSERVER_HAS_STATS
cbs = rfbStatGetSentBytes(cl);
rbs = rfbStatGetSentBytesIfRaw(cl);
#endif
#endif
if (init) {
if (db) fprintf(stderr, "%d client num rects req: %d mod: %d cbs: %d "
"rbs: %d dt1: %.3f t: %.3f\n", init,
(int) sraRgnCountRects(cl->requestedRegion),
(int) sraRgnCountRects(cl->modifiedRegion), cbs, rbs, dt1, now);
cd->timer = dnow();
cd->cmp_bytes_sent = cbs;
cd->raw_bytes_sent = rbs;
continue;
}
/* first part of the bulk transfer of initial screen */
dt1 = dtime(&cd->timer);
if (db) fprintf(stderr, "%d client num rects req: %d mod: %d cbs: %d "
"rbs: %d dt1: %.3f t: %.3f\n", init,
(int) sraRgnCountRects(cl->requestedRegion),
(int) sraRgnCountRects(cl->modifiedRegion), cbs, rbs, dt1, now);
if (dt1 <= 0.0) {
continue;
}
cbs = cbs - cd->cmp_bytes_sent;
rbs = rbs - cd->raw_bytes_sent;
if (cbs < min_cmp) {
continue;
}
if (ouch_db) fprintf(stderr, "START-OUCH: %d\n", client_count);
clcnt0 = client_count;
#define OUCH ( ouch || (ouch = (!client_count || client_count != clcnt0 || dnow() < last_client_gone+4.0)) )
rfbPE(1000);
if (OUCH && ouch_db) fprintf(stderr, "***OUCH-A\n");
if (OUCH) continue;
if (use_threads) LOCK(cl->updateMutex);
if (sraRgnCountRects(cl->modifiedRegion)) {
rfbPE(1000);
if (OUCH && ouch_db) fprintf(stderr, "***OUCH-B\n");
if (use_threads) UNLOCK(cl->updateMutex);
if (OUCH) continue;
}
if (use_threads) UNLOCK(cl->updateMutex);
defer = screen->deferUpdateTime;
httpdir = screen->httpDir;
screen->deferUpdateTime = 0;
screen->httpDir = NULL;
/* mark a small rectangle: */
mark_rect_as_modified(0, 0, 16, 16, 1);
dtime0(&tm);
dt2 = 0.0;
dt3 = 0.0;
if (dt1 < 0.25) {
/* try to cut it down to avoid long pauses. */
spin_max = 5.0;
}
/* when req1 = 1 mod1 == 0, end of 2nd part of bulk transfer */
while (1) {
int req0, req1, mod0, mod1;
if (OUCH && ouch_db) fprintf(stderr, "***OUCH-C1\n");
if (OUCH) break;
if (use_threads) LOCK(cl->updateMutex);
req0 = sraRgnCountRects(cl->requestedRegion);
mod0 = sraRgnCountRects(cl->modifiedRegion);
if (use_threads) UNLOCK(cl->updateMutex);
if (use_threads) {
usleep(1000);
} else {
if (mod0) {
rfbPE(1000);
} else {
rfbCFD(1000);
}
}
dt = dtime(&tm);
dt2 += dt;
if (dt2 > spin_max) {
break;
}
if (OUCH && ouch_db) fprintf(stderr, "***OUCH-C2\n");
if (OUCH) break;
if (use_threads) LOCK(cl->updateMutex);
req1 = sraRgnCountRects(cl->requestedRegion);
mod1 = sraRgnCountRects(cl->modifiedRegion);
if (use_threads) UNLOCK(cl->updateMutex);
if (db) fprintf(stderr, "dt2 calc: num rects req: %d/%d mod: %d/%d "
"fbu-sent: %d dt: %.4f dt2: %.4f tm: %.4f\n",
req0, req1, mod0, mod1,
#if 0
cl->framebufferUpdateMessagesSent,
#else
#if LIBVNCSERVER_HAS_STATS
rfbStatGetMessageCountSent(cl, rfbFramebufferUpdate),
#endif
#endif
dt, dt2, tm);
if (req1 != 0 && mod1 == 0) {
got_t2 = 1;
break;
}
}
if (OUCH && ouch_db) fprintf(stderr, "***OUCH-D\n");
if (OUCH) goto ouch;
if (! got_t2) {
dt2 = 0.0;
} else {
int tr, trm = 3;
double dts[10];
/*
* Note: since often select(2) cannot sleep
* less than 1/HZ (e.g. 10ms), the resolution
* of the latency may be messed up by something
* of this order. Effect may occur on both ends,
* i.e. the viewer may not respond immediately.
*/
for (tr = 0; tr < trm; tr++) {
usleep(5000);
/* mark a 2nd small rectangle: */
mark_rect_as_modified(0, 0, 16, 16, 1);
i = 0;
dtime0(&tm);
dt3 = 0.0;
/*
* when req1 > 0 and mod1 == 0, we say
* that is the "ping" time.
*/
while (1) {
int req0, req1, mod0, mod1;
if (use_threads) LOCK(cl->updateMutex);
req0 = sraRgnCountRects(cl->requestedRegion);
mod0 = sraRgnCountRects(cl->modifiedRegion);
if (use_threads) UNLOCK(cl->updateMutex);
if (i == 0) {
rfbPE(0);
} else {
if (use_threads) {
usleep(1000);
} else {
/* try to get it all */
rfbCFD(1000*1000);
}
}
if (OUCH && ouch_db) fprintf(stderr, "***OUCH-E\n");
if (OUCH) goto ouch;
dt = dtime(&tm);
i++;
dt3 += dt;
if (dt3 > spin_lat_max) {
break;
}
if (use_threads) LOCK(cl->updateMutex);
req1 = sraRgnCountRects(cl->requestedRegion);
mod1 = sraRgnCountRects(cl->modifiedRegion);
if (use_threads) UNLOCK(cl->updateMutex);
if (db) fprintf(stderr, "dt3 calc: num rects req: %d/%d mod: %d/%d "
"fbu-sent: %d dt: %.4f dt3: %.4f tm: %.4f\n",
req0, req1, mod0, mod1,
#if 0
cl->framebufferUpdateMessagesSent,
#else
#if LIBVNCSERVER_HAS_STATS
rfbStatGetMessageCountSent(cl, rfbFramebufferUpdate),
#endif
#endif
dt, dt3, tm);
if (req1 != 0 && mod1 == 0) {
dts[got_t3++] = dt3;
break;
}
}
}
if (! got_t3) {
dt3 = 0.0;
} else {
if (got_t3 == 1) {
dt3 = dts[0];
} else if (got_t3 == 2) {
dt3 = dts[1];
} else {
if (dts[2] > 0.0) {
double rat = dts[1]/dts[2];
if (rat > 0.5 && rat < 2.0) {
dt3 = dts[1]+dts[2];
dt3 *= 0.5;
} else {
dt3 = dts[1];
}
} else {
dt3 = dts[1];
}
}
}
}
ouch:
screen->deferUpdateTime = defer;
screen->httpDir = httpdir;
if (OUCH && ouch_db) fprintf(stderr, "***OUCH-F\n");
if (OUCH) break;
dt = dt1 + dt2;
if (dt3 <= dt2/2.0) {
/* guess only 1/2 a ping for reply... */
dt = dt - dt3/2.0;
}
cmp_rate = cbs/dt;
raw_rate = rbs/dt;
if (cmp_rate > cmp_max) {
cmp_rate = cmp_max;
}
if (cmp_rate <= cmp_min) {
cmp_rate = cmp_min;
}
cd->send_cmp_rate = cmp_rate;
cd->send_raw_rate = raw_rate;
if (dt3 > lat_max) {
dt3 = lat_max;
}
if (dt3 <= lat_min) {
dt3 = lat_min;
}
cd->latency = dt3;
rfbLog("client %d network rate %.1f KB/sec (%.1f eff KB/sec)\n",
cd->uid, cmp_rate/1000.0, raw_rate/1000.0);
rfbLog("client %d latency: %.1f ms\n", cd->uid, 1000.0*dt3);
rfbLog("dt1: %.4f, dt2: %.4f dt3: %.4f bytes: %d\n",
dt1, dt2, dt3, cbs);
msg = 1;
}
if (msg) {
int link, latency, netrate;
char *str = "error";
link = link_rate(&latency, &netrate);
if (link == LR_UNSET) {
str = "LR_UNSET";
} else if (link == LR_UNKNOWN) {
str = "LR_UNKNOWN";
} else if (link == LR_DIALUP) {
str = "LR_DIALUP";
} else if (link == LR_BROADBAND) {
str = "LR_BROADBAND";
} else if (link == LR_LAN) {
str = "LR_LAN";
}
rfbLog("link_rate: %s - %d ms, %d KB/s\n", str, latency,
netrate);
}
if (init) {
if (nclients) {
screen->displayHook = measure_display_hook;
}
} else {
screen->displayHook = orig_display_hook;
}
}
void initialize_speeds(void) {
char *s, *s_in, *p;
int i;
speeds_read_rate = 0;
speeds_net_rate = 0;
speeds_net_latency = 0;
if (! speeds_str || *speeds_str == '\0') {
s_in = strdup("");
} else {
s_in = strdup(speeds_str);
}
if (!strcmp(s_in, "modem")) {
s = strdup("6,4,200");
} else if (!strcmp(s_in, "dsl")) {
s = strdup("6,100,50");
} else if (!strcmp(s_in, "lan")) {
s = strdup("6,5000,1");
} else {
s = strdup(s_in);
}
p = strtok(s, ",");
i = 0;
while (p) {
double val;
if (*p != '\0') {
val = atof(p);
if (i==0) {
speeds_read_rate = (int) 1000000 * val;
} else if (i==1) {
speeds_net_rate = (int) 1000 * val;
} else if (i==2) {
speeds_net_latency = (int) val;
}
}
i++;
p = strtok(NULL, ",");
}
free(s);
free(s_in);
if (! speeds_read_rate) {
int n = 0;
double dt, timer;
#ifdef MACOSX
if (macosx_console && macosx_read_opengl && fullscreen) {
copy_image(fullscreen, 0, 0, 0, 0);
usleep(10 * 1000);
}
#endif
dtime0(&timer);
if (fullscreen) {
copy_image(fullscreen, 0, 0, 0, 0);
n = fullscreen->bytes_per_line * fullscreen->height;
} else if (scanline) {
copy_image(scanline, 0, 0, 0, 0);
n = scanline->bytes_per_line * scanline->height;
}
dt = dtime(&timer);
if (n && dt > 0.0) {
double rate = ((double) n) / dt;
speeds_read_rate_measured = (int) (rate/1000000.0);
if (speeds_read_rate_measured < 1) {
speeds_read_rate_measured = 1;
} else {
rfbLog("fb read rate: %d MB/sec\n",
speeds_read_rate_measured);
}
}
}
}
int collect_xdamage(int scancnt, int call) {
#if HAVE_LIBXDAMAGE
XDamageNotifyEvent *dev;
XEvent ev;
sraRegionPtr tmpregion;
sraRegionPtr reg;
static int rect_count = 0;
int nreg, ccount = 0, dcount = 0, ecount = 0;
static time_t last_rpt = 0;
time_t now;
int x, y, w, h, x2, y2;
int i, dup, next = 0, dup_max = 0;
#define DUPSZ 32
int dup_x[DUPSZ], dup_y[DUPSZ], dup_w[DUPSZ], dup_h[DUPSZ];
double tm, dt;
int mark_all = 0, retries = 0, too_many = 1000, tot_ev = 0;
RAWFB_RET(0)
if (scancnt) {} /* unused vars warning: */
if (! xdamage_present || ! use_xdamage) {
return 0;
}
if (! xdamage) {
return 0;
}
if (! xdamage_base_event_type) {
return 0;
}
if (! xdamage_regions) {
return 0;
}
dtime0(&tm);
nreg = (xdamage_memory * NSCAN) + 1;
if (call == 0) {
xdamage_ticker = (xdamage_ticker+1) % nreg;
xdamage_direct_count = 0;
reg = xdamage_regions[xdamage_ticker];
if (reg != NULL) {
sraRgnMakeEmpty(reg);
}
} else {
if (xdamage_ticker < 0) {
xdamage_ticker = 0;
}
reg = xdamage_regions[xdamage_ticker];
}
if (reg == NULL) {
return 0;
}
X_LOCK;
if (0) XFlush_wr(dpy);
if (0) XEventsQueued(dpy, QueuedAfterFlush);
come_back_for_more:
while (XCheckTypedEvent(dpy, xdamage_base_event_type+XDamageNotify, &ev)) {
/*
* TODO max cut off time in this loop?
* Could check QLength and if huge just mark the whole
* screen.
*/
ecount++;
tot_ev++;
if (mark_all) {
continue;
}
if (ecount == too_many) {
int nqa = XEventsQueued(dpy, QueuedAlready);
if (nqa >= too_many) {
static double last_msg = 0.0;
tmpregion = sraRgnCreateRect(0, 0, dpy_x, dpy_y);
sraRgnOr(reg, tmpregion);
sraRgnDestroy(tmpregion);
if (dnow() > last_msg + xdamage_crazy_delay) {
rfbLog("collect_xdamage: too many xdamage events %d+%d\n", ecount, nqa);
last_msg = dnow();
}
mark_all = 1;
}
}
if (ev.type != xdamage_base_event_type + XDamageNotify) {
break;
}
dev = (XDamageNotifyEvent *) &ev;
if (dev->damage != xdamage) {
continue; /* not ours! */
}
x = dev->area.x;
y = dev->area.y;
w = dev->area.width;
h = dev->area.height;
/*
* we try to manually remove some duplicates because
* certain activities can lead to many 10's of dups
* in a row. The region work can be costly and reg is
* later used in xdamage_hint_skip loops, so it is good
* to skip them if possible.
*/
dup = 0;
for (i=0; i < dup_max; i++) {
if (dup_x[i] == x && dup_y[i] == y && dup_w[i] == w &&
dup_h[i] == h) {
dup = 1;
break;
}
}
if (dup) {
dcount++;
continue;
}
if (dup_max < DUPSZ) {
next = dup_max;
dup_max++;
} else {
next = (next+1) % DUPSZ;
}
dup_x[next] = x;
dup_y[next] = y;
dup_w[next] = w;
dup_h[next] = h;
/* translate if needed */
if (clipshift) {
/* set coords relative to fb origin */
if (0 && rootshift) {
/*
* Note: not needed because damage is
* relative to subwin, not rootwin.
*/
x = x - off_x;
y = y - off_y;
}
if (clipshift) {
x = x - coff_x;
y = y - coff_y;
}
x2 = x + w; /* upper point */
x = nfix(x, dpy_x); /* place both in fb area */
x2 = nfix(x2, dpy_x+1);
w = x2 - x; /* recompute w */
y2 = y + h;
y = nfix(y, dpy_y);
y2 = nfix(y2, dpy_y+1);
h = y2 - y;
if (w <= 0 || h <= 0) {
continue;
}
}
if (debug_xdamage > 2) {
fprintf(stderr, "xdamage: -> event %dx%d+%d+%d area:"
" %d dups: %d %s\n", w, h, x, y, w*h, dcount,
(w*h > xdamage_max_area) ? "TOO_BIG" : "");
}
record_desired_xdamage_rect(x, y, w, h);
tmpregion = sraRgnCreateRect(x, y, x + w, y + h);
sraRgnOr(reg, tmpregion);
sraRgnDestroy(tmpregion);
rect_count++;
ccount++;
}
if (mark_all) {
if (ecount + XEventsQueued(dpy, QueuedAlready) >= 3 * too_many && retries < 3) {
retries++;
XFlush_wr(dpy);
usleep(20 * 1000);
XFlush_wr(dpy);
ecount = 0;
goto come_back_for_more;
}
}
/* clear the whole damage region for next time. XXX check */
if (call == 1) {
XDamageSubtract(dpy, xdamage, None, None);
}
X_UNLOCK;
if (tot_ev > 20 * too_many) {
rfbLog("collect_xdamage: xdamage has gone crazy (screensaver or game?) ev: %d ret: %d\n", tot_ev, retries);
rfbLog("collect_xdamage: disabling xdamage for %d seconds.\n", (int) xdamage_crazy_delay);
destroy_xdamage_if_needed();
X_LOCK;
XSync(dpy, False);
while (XCheckTypedEvent(dpy, xdamage_base_event_type+XDamageNotify, &ev)) {
;
}
X_UNLOCK;
xdamage_crazy_time = dnow();
}
if (0 && xdamage_direct_count) {
fb_push();
}
dt = dtime(&tm);
if ((debug_tiles > 1 && ecount) || (debug_tiles && ecount > 200)
|| debug_xdamage > 1) {
fprintf(stderr, "collect_xdamage(%d): %.4f t: %.4f ev/dup/accept"
"/direct %d/%d/%d/%d\n", call, dt, tm - x11vnc_start, ecount,
dcount, ccount, xdamage_direct_count);
}
now = time(NULL);
if (! last_rpt) {
last_rpt = now;
}
if (now > last_rpt + 15) {
double rat = -1.0;
if (XD_tot) {
rat = ((double) XD_skip)/XD_tot;
}
if (debug_tiles || debug_xdamage) {
fprintf(stderr, "xdamage: == scanline skip/tot: "
"%04d/%04d =%.3f rects: %d desired: %d\n",
XD_skip, XD_tot, rat, rect_count, XD_des);
}
XD_skip = 0;
XD_tot = 0;
XD_des = 0;
rect_count = 0;
last_rpt = now;
}
#else
if (0) scancnt++; /* compiler warnings */
if (0) call++;
if (0) record_desired_xdamage_rect(0, 0, 0, 0);
#endif
return 0;
}
int collect_non_X_xdamage(int x_in, int y_in, int w_in, int h_in, int call) {
sraRegionPtr tmpregion;
sraRegionPtr reg;
static int rect_count = 0;
int nreg, ccount = 0, dcount = 0, ecount = 0;
static time_t last_rpt = 0;
time_t now;
double tm, dt;
int x, y, w, h, x2, y2;
if (call && debug_xdamage > 1) fprintf(stderr, "collect_non_X_xdamage: %d %d %d %d - %d / %d\n", x_in, y_in, w_in, h_in, call, use_xdamage);
if (! use_xdamage) {
return 0;
}
if (! xdamage_regions) {
return 0;
}
dtime0(&tm);
nreg = (xdamage_memory * NSCAN) + 1;
if (call == 0) {
xdamage_ticker = (xdamage_ticker+1) % nreg;
xdamage_direct_count = 0;
reg = xdamage_regions[xdamage_ticker];
if (reg != NULL) {
sraRgnMakeEmpty(reg);
}
} else {
if (xdamage_ticker < 0) {
xdamage_ticker = 0;
}
reg = xdamage_regions[xdamage_ticker];
}
if (reg == NULL) {
return 0;
}
if (x_in < 0) {
return 0;
}
x = x_in;
y = y_in;
w = w_in;
h = h_in;
/* translate if needed */
if (clipshift) {
/* set coords relative to fb origin */
if (0 && rootshift) {
/*
* Note: not needed because damage is
* relative to subwin, not rootwin.
*/
x = x - off_x;
y = y - off_y;
}
if (clipshift) {
x = x - coff_x;
y = y - coff_y;
}
x2 = x + w; /* upper point */
x = nfix(x, dpy_x); /* place both in fb area */
x2 = nfix(x2, dpy_x+1);
w = x2 - x; /* recompute w */
y2 = y + h;
y = nfix(y, dpy_y);
y2 = nfix(y2, dpy_y+1);
h = y2 - y;
if (w <= 0 || h <= 0) {
return 0;
}
}
if (debug_xdamage > 2) {
fprintf(stderr, "xdamage: -> event %dx%d+%d+%d area:"
" %d dups: %d %s reg: %p\n", w, h, x, y, w*h, dcount,
(w*h > xdamage_max_area) ? "TOO_BIG" : "", (void *)reg);
}
record_desired_xdamage_rect(x, y, w, h);
tmpregion = sraRgnCreateRect(x, y, x + w, y + h);
sraRgnOr(reg, tmpregion);
sraRgnDestroy(tmpregion);
rect_count++;
ccount++;
if (0 && xdamage_direct_count) {
fb_push();
}
dt = dtime(&tm);
if ((debug_tiles > 1 && ecount) || (debug_tiles && ecount > 200)
|| debug_xdamage > 1) {
fprintf(stderr, "collect_non_X_xdamage(%d): %.4f t: %.4f ev/dup/accept"
"/direct %d/%d/%d/%d\n", call, dt, tm - x11vnc_start, ecount,
dcount, ccount, xdamage_direct_count);
}
now = time(NULL);
if (! last_rpt) {
last_rpt = now;
}
if (now > last_rpt + 15) {
double rat = -1.0;
if (XD_tot) {
rat = ((double) XD_skip)/XD_tot;
}
if (debug_tiles || debug_xdamage) {
fprintf(stderr, "xdamage: == scanline skip/tot: "
"%04d/%04d =%.3f rects: %d desired: %d\n",
XD_skip, XD_tot, rat, rect_count, XD_des);
}
XD_skip = 0;
XD_tot = 0;
XD_des = 0;
rect_count = 0;
last_rpt = now;
}
return 0;
}