9 |
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*/ |
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#include "rholo.h" |
12 |
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#include <sys/types.h> |
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|
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#ifndef NFRAG2CHUNK |
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#define NFRAG2CHUNK 4096 /* number of fragments to start chunking */ |
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#endif |
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|
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#ifndef abs |
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#define abs(x) ((x) > 0 ? (x) : -(x)) |
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#endif |
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#ifndef sgn |
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#define sgn(x) ((x) > 0 ? 1 : (x) < 0 ? -1 : 0) |
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#endif |
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|
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#define rchunk(n) (((n)+(RPACKSIZ/2))/RPACKSIZ) |
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|
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extern time_t time(); |
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|
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static PACKHEAD *complist=NULL; /* list of beams to compute */ |
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static int complen=0; /* length of complist */ |
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static int listpos=0; /* current list position for next_packet */ |
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static int lastin= -1; /* last ordered position in list */ |
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static int chunky=0; /* clump beams together on disk */ |
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|
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|
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int |
37 |
< |
beamcmp(b0, b1) /* comparison for descending compute order */ |
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> |
beamcmp(b0, b1) /* comparison for compute order */ |
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register PACKHEAD *b0, *b1; |
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{ |
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< |
return( b1->nr*(b0->nc+1) - b0->nr*(b1->nc+1) ); |
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> |
BEAMI *bip0, *bip1; |
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> |
register long c; |
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/* first check desired quantities */ |
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if (chunky) |
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> |
c = rchunk(b1->nr)*(rchunk(b0->nc)+1L) - |
45 |
> |
rchunk(b0->nr)*(rchunk(b1->nc)+1L); |
46 |
> |
else |
47 |
> |
c = b1->nr*(b0->nc+1L) - b0->nr*(b1->nc+1L); |
48 |
> |
if (c > 0) return(1); |
49 |
> |
if (c < 0) return(-1); |
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/* only one file, so skip the following: */ |
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> |
#if 0 |
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/* next, check file descriptors */ |
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c = hdlist[b0->hd]->fd - hdlist[b1->hd]->fd; |
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> |
if (c) return(c); |
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> |
#endif |
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/* finally, check file positions */ |
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> |
bip0 = &hdlist[b0->hd]->bi[b0->bi]; |
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> |
bip1 = &hdlist[b1->hd]->bi[b1->bi]; |
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> |
/* put diskless beams last */ |
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> |
if (!bip0->nrd) |
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> |
return(bip1->nrd > 0); |
62 |
> |
if (!bip1->nrd) |
63 |
> |
return(-1); |
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> |
c = bip0->fo - bip1->fo; |
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> |
return(c < 0 ? -1 : c > 0); |
66 |
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} |
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|
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|
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int |
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< |
dispbeam(b, hp, bi) /* display a holodeck beam */ |
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beamidcmp(b0, b1) /* comparison for beam searching */ |
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> |
register PACKHEAD *b0, *b1; |
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> |
{ |
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> |
register int c = b0->hd - b1->hd; |
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> |
|
75 |
> |
if (c) return(c); |
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> |
return(b0->bi - b1->bi); |
77 |
> |
} |
78 |
> |
|
79 |
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|
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> |
int |
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> |
dispbeam(b, hb) /* display a holodeck beam */ |
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register BEAM *b; |
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< |
HOLO *hp; |
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int bi; |
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> |
register HDBEAMI *hb; |
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{ |
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static int n = 0; |
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static PACKHEAD *p = NULL; |
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/* assign packet fields */ |
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bcopy((char *)hdbray(b), (char *)packra(p), b->nrm*sizeof(RAYVAL)); |
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p->nr = p->nc = b->nrm; |
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for (p->hd = 0; hdlist[p->hd] != hp; p->hd++) |
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for (p->hd = 0; hdlist[p->hd] != hb->h; p->hd++) |
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if (hdlist[p->hd] == NULL) |
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error(CONSISTENCY, "unregistered holodeck in dispbeam"); |
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p->bi = bi; |
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p->bi = hb->b; |
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disp_packet(p); /* display it */ |
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} |
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|
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|
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bundle_set(op, clist, nents) /* bundle set operation */ |
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int op; |
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register PACKHEAD *clist; |
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PACKHEAD *clist; |
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int nents; |
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{ |
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int oldnr; |
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register int i, n; |
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/* look for common members */ |
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for (n = 0; n < nents; n++) { |
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for (i = 0; i < complen; i++) |
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if (clist[n].bi == complist[i].bi && |
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clist[n].hd == complist[i].hd) { |
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< |
oldnr = complist[i].nr; |
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clist[n].nc = complist[i].nc; |
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switch (op) { |
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< |
case BS_ADD: /* add to count */ |
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< |
complist[i].nr += clist[n].nr; |
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clist[n].nr = 0; |
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< |
break; |
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< |
case BS_ADJ: /* reset count */ |
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< |
complist[i].nr = clist[n].nr; |
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clist[n].nr = 0; |
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break; |
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< |
case BS_DEL: /* delete count */ |
132 |
< |
if (clist[n].nr == 0 || |
133 |
< |
clist[n].nr >= complist[i].nr) |
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complist[i].nr = 0; |
135 |
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else |
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< |
complist[i].nr -= clist[n].nr; |
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< |
break; |
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< |
} |
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< |
if (complist[i].nr != oldnr) |
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< |
lastin = -1; /* flag sort */ |
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< |
break; |
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< |
} |
143 |
< |
if (i >= complen) |
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< |
clist[n].nc = bnrays(hdlist[clist[n].hd], clist[n].bi); |
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> |
int oldnr, n; |
114 |
> |
HDBEAMI *hbarr; |
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> |
register PACKHEAD *csm; |
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> |
register int i; |
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> |
/* search for common members */ |
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> |
for (csm = clist+nents; csm-- > clist; ) |
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> |
csm->nc = -1; |
120 |
> |
qsort((char *)clist, nents, sizeof(PACKHEAD), beamidcmp); |
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> |
for (i = 0; i < complen; i++) { |
122 |
> |
csm = (PACKHEAD *)bsearch((char *)(complist+i), (char *)clist, |
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> |
nents, sizeof(PACKHEAD), beamidcmp); |
124 |
> |
if (csm == NULL) |
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> |
continue; |
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> |
oldnr = complist[i].nr; |
127 |
> |
csm->nc = complist[i].nc; |
128 |
> |
switch (op) { |
129 |
> |
case BS_ADD: /* add to count */ |
130 |
> |
complist[i].nr += csm->nr; |
131 |
> |
csm->nr = 0; |
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> |
break; |
133 |
> |
case BS_ADJ: /* reset count */ |
134 |
> |
complist[i].nr = csm->nr; |
135 |
> |
csm->nr = 0; |
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> |
break; |
137 |
> |
case BS_DEL: /* delete count */ |
138 |
> |
if (csm->nr == 0 || csm->nr >= complist[i].nr) |
139 |
> |
complist[i].nr = 0; |
140 |
> |
else |
141 |
> |
complist[i].nr -= csm->nr; |
142 |
> |
break; |
143 |
> |
} |
144 |
> |
if (complist[i].nr != oldnr) |
145 |
> |
lastin = -1; /* flag sort */ |
146 |
|
} |
147 |
+ |
/* record computed rays for uncommon beams */ |
148 |
+ |
for (csm = clist+nents; csm-- > clist; ) |
149 |
+ |
if (csm->nc < 0) |
150 |
+ |
csm->nc = bnrays(hdlist[csm->hd], csm->bi); |
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|
/* complete list operations */ |
152 |
|
switch (op) { |
153 |
|
case BS_NEW: /* new computation set */ |
154 |
< |
listpos = 0; |
101 |
< |
lastin = -1; |
154 |
> |
listpos = 0; lastin = -1; |
155 |
|
if (complen) /* free old list */ |
156 |
|
free((char *)complist); |
157 |
|
complist = NULL; |
169 |
|
sortcomplist(); /* sort updated list & new entries */ |
170 |
|
qsort((char *)clist, nents, sizeof(PACKHEAD), beamcmp); |
171 |
|
/* what can't we satisfy? */ |
172 |
< |
for (n = 0; n < nents && clist[n].nr > clist[n].nc; n++) |
172 |
> |
for (i = nents, csm = clist; i-- && csm->nr > csm->nc; csm++) |
173 |
|
; |
174 |
< |
if (op == BS_ADJ) |
175 |
< |
nents = n; |
174 |
> |
n = csm - clist; |
175 |
> |
if (op == BS_ADJ) { /* don't regenerate adjusted beams */ |
176 |
> |
for (++i; i-- && csm->nr > 0; csm++) |
177 |
> |
; |
178 |
> |
nents = csm - clist; |
179 |
> |
} |
180 |
|
if (n) { /* allocate space for merged list */ |
181 |
|
PACKHEAD *newlist; |
182 |
|
newlist = (PACKHEAD *)malloc( |
198 |
|
default: |
199 |
|
error(CONSISTENCY, "bundle_set called with unknown operation"); |
200 |
|
} |
201 |
< |
if (outdev != NULL) { /* load and display beams we have */ |
202 |
< |
register HDBEAMI *hb; |
203 |
< |
|
204 |
< |
hb = (HDBEAMI *)malloc(nents*sizeof(HDBEAMI)); |
205 |
< |
for (i = 0; i < nents; i++) { |
206 |
< |
hb[i].h = hdlist[clist[i].hd]; |
207 |
< |
hb[i].b = clist[i].bi; |
151 |
< |
} |
152 |
< |
hdloadbeams(hb, nents, dispbeam); |
153 |
< |
free((char *)hb); |
201 |
> |
if (outdev == NULL || !nents) /* nothing to display? */ |
202 |
> |
return; |
203 |
> |
/* load and display beams we have */ |
204 |
> |
hbarr = (HDBEAMI *)malloc(nents*sizeof(HDBEAMI)); |
205 |
> |
for (i = nents; i--; ) { |
206 |
> |
hbarr[i].h = hdlist[clist[i].hd]; |
207 |
> |
hbarr[i].b = clist[i].bi; |
208 |
|
} |
209 |
+ |
hdloadbeams(hbarr, nents, dispbeam); |
210 |
+ |
free((char *)hbarr); |
211 |
+ |
if (hdfragflags&FF_READ) { |
212 |
+ |
listpos = 0; |
213 |
+ |
lastin = -1; /* need to re-sort list */ |
214 |
+ |
} |
215 |
|
return; |
216 |
|
memerr: |
217 |
|
error(SYSTEM, "out of memory in bundle_set"); |
262 |
|
free((char *)complist); |
263 |
|
done_packets(flush_queue()); |
264 |
|
} |
265 |
+ |
/* reseed random number generator */ |
266 |
+ |
srandom(time(NULL)); |
267 |
|
/* allocate beam list */ |
268 |
|
complen = 0; |
269 |
|
for (j = 0; hdlist[j] != NULL; j++) |
291 |
|
else |
292 |
|
frac = 1024.*1024.*16384. / (wtotal*sizeof(RAYVAL)); |
293 |
|
while (k--) |
294 |
< |
complist[k].nr = frac * complist[k].nr; |
295 |
< |
listpos = 0; lastin = -1; /* flag initial sort */ |
294 |
> |
complist[k].nr = frac*complist[k].nr + 0.5; |
295 |
> |
listpos = 0; lastin = -1; /* perform initial sort */ |
296 |
> |
sortcomplist(); |
297 |
> |
/* no view vicinity */ |
298 |
> |
myeye.rng = 0; |
299 |
|
} |
300 |
|
|
301 |
|
|
325 |
|
sortcomplist() /* fix our list order */ |
326 |
|
{ |
327 |
|
PACKHEAD *list2; |
328 |
+ |
int listlen; |
329 |
|
register int i; |
330 |
|
|
331 |
|
if (complen <= 0) /* check to see if there is even a list */ |
332 |
|
return; |
333 |
+ |
if (!chunky) /* check to see if fragment list is full */ |
334 |
+ |
if (!hdfragOK(hdlist[0]->fd, &listlen, NULL) |
335 |
+ |
#if NFRAG2CHUNK |
336 |
+ |
|| listlen >= NFRAG2CHUNK |
337 |
+ |
#endif |
338 |
+ |
) { |
339 |
+ |
#ifdef DEBUG |
340 |
+ |
error(WARNING, "using chunky comparison mode"); |
341 |
+ |
#endif |
342 |
+ |
chunky++; /* use "chunky" comparison */ |
343 |
+ |
lastin = -1; /* need to re-sort list */ |
344 |
+ |
} |
345 |
+ |
#ifdef DEBUG |
346 |
+ |
else |
347 |
+ |
fprintf(stderr, "sortcomplist: %d fragments\n", |
348 |
+ |
listlen); |
349 |
+ |
#endif |
350 |
|
if (lastin < 0 || listpos*4 >= complen*3) |
351 |
|
qsort((char *)complist, complen, sizeof(PACKHEAD), beamcmp); |
352 |
|
else if (listpos) { /* else sort and merge sublist */ |
369 |
|
} else if (i < complen-1) { |
370 |
|
list2 = (PACKHEAD *)realloc((char *)complist, |
371 |
|
(i+1)*sizeof(PACKHEAD)); |
372 |
< |
if (list2 != NULL) { |
372 |
> |
if (list2 != NULL) |
373 |
|
complist = list2; |
374 |
< |
complen = i+1; |
292 |
< |
} |
374 |
> |
complen = i+1; |
375 |
|
} |
376 |
|
listpos = 0; lastin = i; |
377 |
|
} |
382 |
|
* more or less evenly distributed, such that computing a packet causes |
383 |
|
* a given bundle to move way down in the computation order. We keep |
384 |
|
* track of where the computed bundle with the highest priority would end |
385 |
< |
* up, and if we get further in our compute list than this, we resort the |
385 |
> |
* up, and if we get further in our compute list than this, we re-sort the |
386 |
|
* list and start again from the beginning. Since |
387 |
|
* a merge sort is used, the sorting costs are minimal. |
388 |
|
*/ |
402 |
|
p->nr = complist[listpos].nr - p->nc; |
403 |
|
if (p->nr <= 0) |
404 |
|
return(0); |
405 |
< |
#ifdef DEBUG |
406 |
< |
if (n < 1 | n > RPACKSIZ) |
325 |
< |
error(CONSISTENCY, "next_packet called with bad n value"); |
326 |
< |
#endif |
405 |
> |
DCHECK(n < 1 | n > RPACKSIZ, |
406 |
> |
CONSISTENCY, "next_packet called with bad n value"); |
407 |
|
if (p->nr > n) |
408 |
|
p->nr = n; |
409 |
|
complist[listpos].nc += p->nr; /* find where this one would go */ |
410 |
+ |
if (hdgetbeam(hdlist[p->hd], p->bi) != NULL) |
411 |
+ |
hdfreefrag(hdlist[p->hd], p->bi); |
412 |
|
while (lastin > listpos && |
413 |
|
beamcmp(complist+lastin, complist+listpos) > 0) |
414 |
|
lastin--; |