| 1 |
#ifndef lint
|
| 2 |
static const char RCSid[] = "$Id: RcontribSimulManager.cpp,v 2.17 2025/10/23 16:33:39 greg Exp $";
|
| 3 |
#endif
|
| 4 |
/*
|
| 5 |
* RcontribSimulManager.cpp
|
| 6 |
*
|
| 7 |
* Rcontrib simulation manager implementation
|
| 8 |
*
|
| 9 |
* Created by Greg Ward on 10/17/2024.
|
| 10 |
*/
|
| 11 |
|
| 12 |
#include <unistd.h>
|
| 13 |
#include <ctype.h>
|
| 14 |
#include "platform.h"
|
| 15 |
#include "selcall.h"
|
| 16 |
#include "RcontribSimulManager.h"
|
| 17 |
#include "func.h"
|
| 18 |
#include "resolu.h"
|
| 19 |
#include "source.h"
|
| 20 |
|
| 21 |
char RCCONTEXT[] = "RC.";
|
| 22 |
|
| 23 |
extern const char HDRSTR[];
|
| 24 |
extern const char BIGEND[];
|
| 25 |
extern const char FMTSTR[];
|
| 26 |
|
| 27 |
// new/exclusive, overwrite if exists, or recover data
|
| 28 |
int RSDOflags[] = {RDSwrite|RDSexcl|RDSextend, RDSwrite|RDSextend,
|
| 29 |
RDSread|RDSwrite};
|
| 30 |
|
| 31 |
static const char ROWZEROSTR[] = "NROWS=0000000000000000\n";
|
| 32 |
#define LNROWSTR 6
|
| 33 |
|
| 34 |
// Modifier channel for recording contributions (no constructor/destructor)
|
| 35 |
struct RcontribMod {
|
| 36 |
RcontribOutput * opl; // pointer to first output channel
|
| 37 |
char * params; // parameters string
|
| 38 |
EPNODE * binv; // bin expression (NULL if 1 bin)
|
| 39 |
int nbins; // bin count this modifier
|
| 40 |
int coffset; // column offset in bytes
|
| 41 |
DCOLORV cbin[1]; // bin accumulator (extends struct)
|
| 42 |
/// Access specific (spectral) color bin
|
| 43 |
DCOLORV * operator[](int n) {
|
| 44 |
if ((n < 0) | (n >= nbins)) return NULL;
|
| 45 |
return cbin + n*NCSAMP;
|
| 46 |
}
|
| 47 |
};
|
| 48 |
|
| 49 |
// Struct used to assign record calculation to child
|
| 50 |
struct RowAssignment {
|
| 51 |
uint32 row; // row to do
|
| 52 |
uint32 ac; // accumulation count
|
| 53 |
};
|
| 54 |
|
| 55 |
static const char ROW_DONE[] = "ROW FINISHED\n";
|
| 56 |
|
| 57 |
// allocate rcontrib accumulator
|
| 58 |
static RcontribMod *
|
| 59 |
NewRcMod(const char *prms, const char *binexpr, int ncbins)
|
| 60 |
{
|
| 61 |
if (binexpr && !*binexpr) binexpr = NULL;
|
| 62 |
if (!prms) prms = "";
|
| 63 |
if ((ncbins > 1) & !binexpr) {
|
| 64 |
error(USER, "missing bin expression");
|
| 65 |
return NULL;
|
| 66 |
}
|
| 67 |
if (ncbins < 1) ncbins = 1;
|
| 68 |
|
| 69 |
RcontribMod * mp = (RcontribMod *)ecalloc(1, sizeof(RcontribMod) +
|
| 70 |
sizeof(DCOLORV)*(NCSAMP*ncbins-1) +
|
| 71 |
strlen(prms)+1);
|
| 72 |
|
| 73 |
if (binexpr) { // get/check bin expression
|
| 74 |
mp->binv = eparse(const_cast<char *>(binexpr));
|
| 75 |
if (mp->binv->type == NUM) { // constant expression (0)?
|
| 76 |
if ((int)evalue(mp->binv) != 0) {
|
| 77 |
sprintf(errmsg, "illegal non-zero constant for bin (%s)",
|
| 78 |
binexpr);
|
| 79 |
error(USER, errmsg);
|
| 80 |
}
|
| 81 |
if (ncbins > 1) {
|
| 82 |
sprintf(errmsg, "bad bin count (%d should be 1)", ncbins);
|
| 83 |
error(USER, errmsg);
|
| 84 |
}
|
| 85 |
epfree(mp->binv, true);
|
| 86 |
mp->binv = NULL;
|
| 87 |
prms = "";
|
| 88 |
ncbins = 1;
|
| 89 |
}
|
| 90 |
}
|
| 91 |
mp->params = strcpy((char *)(mp->cbin + ncbins*NCSAMP), prms);
|
| 92 |
mp->nbins = ncbins;
|
| 93 |
return mp;
|
| 94 |
}
|
| 95 |
|
| 96 |
// Free an RcontribMod (public for RcontribSimulManager constructor)
|
| 97 |
void
|
| 98 |
FreeRcMod(void *p)
|
| 99 |
{
|
| 100 |
if (!p) return;
|
| 101 |
EPNODE * bep = (*(RcontribMod *)p).binv;
|
| 102 |
if (bep) epfree(bep, true);
|
| 103 |
efree(p);
|
| 104 |
}
|
| 105 |
|
| 106 |
// Get format identifier
|
| 107 |
const char *
|
| 108 |
formstr(int f)
|
| 109 |
{
|
| 110 |
switch (f) {
|
| 111 |
case 'a': return("ascii");
|
| 112 |
case 'f': return("float");
|
| 113 |
case 'd': return("double");
|
| 114 |
case 'c': return(NCSAMP==3 ? COLRFMT : SPECFMT);
|
| 115 |
}
|
| 116 |
return("unknown");
|
| 117 |
}
|
| 118 |
|
| 119 |
// Standard file data share function
|
| 120 |
RdataShare *
|
| 121 |
fileDataShare(const char *name, RCOutputOp op, size_t siz)
|
| 122 |
{
|
| 123 |
if (op == RCOrecover && access(name, R_OK|W_OK) < 0) {
|
| 124 |
sprintf(errmsg, "cannot recover from '%s'", name);
|
| 125 |
error(SYSTEM, errmsg);
|
| 126 |
return NULL;
|
| 127 |
}
|
| 128 |
return new RdataShareFile(name, RSDOflags[op], siz);
|
| 129 |
}
|
| 130 |
|
| 131 |
// Memory-mapped data share function
|
| 132 |
RdataShare *
|
| 133 |
mapDataShare(const char *name, RCOutputOp op, size_t siz)
|
| 134 |
{
|
| 135 |
if (op == RCOrecover && access(name, R_OK|W_OK) < 0) {
|
| 136 |
sprintf(errmsg, "cannot recover from '%s'", name);
|
| 137 |
error(SYSTEM, errmsg);
|
| 138 |
return NULL;
|
| 139 |
}
|
| 140 |
return new RdataShareMap(name, RSDOflags[op], siz);
|
| 141 |
}
|
| 142 |
|
| 143 |
// Set output format ('f', 'd', or 'c')
|
| 144 |
bool
|
| 145 |
RcontribSimulManager::SetDataFormat(int ty)
|
| 146 |
{
|
| 147 |
if (outList) {
|
| 148 |
error(INTERNAL, "cannot call SetDataFormat() after AddModifier()");
|
| 149 |
return false;
|
| 150 |
}
|
| 151 |
switch (ty) {
|
| 152 |
case 'f':
|
| 153 |
dsiz = sizeof(float)*NCSAMP;
|
| 154 |
break;
|
| 155 |
case 'd':
|
| 156 |
dsiz = sizeof(double)*NCSAMP;
|
| 157 |
break;
|
| 158 |
case 'c':
|
| 159 |
dsiz = LSCOLR;
|
| 160 |
break;
|
| 161 |
default:
|
| 162 |
sprintf(errmsg, "unsupported output format '%c'", ty);
|
| 163 |
error(INTERNAL, errmsg);
|
| 164 |
return false;
|
| 165 |
}
|
| 166 |
dtyp = ty;
|
| 167 |
return true;
|
| 168 |
}
|
| 169 |
|
| 170 |
// static call-back for rcontrib ray-tracing
|
| 171 |
int
|
| 172 |
RcontribSimulManager::RctCall(RAY *r, void *cd)
|
| 173 |
{
|
| 174 |
if (!r->ro || r->ro->omod == OVOID) // hit nothing?
|
| 175 |
return 0;
|
| 176 |
// shadow ray not on source?
|
| 177 |
if (r->rsrc >= 0 && source[r->rsrc].so != r->ro)
|
| 178 |
return 0;
|
| 179 |
|
| 180 |
const char * mname = objptr(r->ro->omod)->oname;
|
| 181 |
RcontribSimulManager * rcp = (RcontribSimulManager *)cd;
|
| 182 |
RcontribMod * mp = (RcontribMod *)lu_find(&rcp->modLUT,mname)->data;
|
| 183 |
if (!mp)
|
| 184 |
return 0; // not in our modifier list
|
| 185 |
|
| 186 |
int bi = 0; // get bin index
|
| 187 |
if (mp->binv) {
|
| 188 |
worldfunc(RCCONTEXT, r);
|
| 189 |
set_eparams(mp->params);
|
| 190 |
double bval = evalue(mp->binv);
|
| 191 |
if (bval <= -.5)
|
| 192 |
return 0; // silently ignore negative bin index
|
| 193 |
bi = int(bval + .5);
|
| 194 |
}
|
| 195 |
DCOLORV * dvp = (*mp)[bi];
|
| 196 |
if (!dvp) {
|
| 197 |
sprintf(errmsg, "bad bin number for '%s' (%d ignored)", mname, bi);
|
| 198 |
error(WARNING, errmsg);
|
| 199 |
return 0;
|
| 200 |
}
|
| 201 |
SCOLOR contr;
|
| 202 |
raycontrib(contr, r, PRIMARY); // compute coefficient
|
| 203 |
if (rcp->HasFlag(RCcontrib))
|
| 204 |
smultscolor(contr, r->rcol); // -> value contribution
|
| 205 |
|
| 206 |
for (int i = 0; i < NCSAMP; i++)
|
| 207 |
*dvp++ += contr[i]; // accumulate color/spectrum
|
| 208 |
return 1;
|
| 209 |
}
|
| 210 |
|
| 211 |
// check for given format type in string, return last char position
|
| 212 |
static int
|
| 213 |
hasFormat(const char *tst, const char *match)
|
| 214 |
{
|
| 215 |
static const char allPoss[] = "%diouxXfFeEgGaAcsb";
|
| 216 |
const char * s = tst;
|
| 217 |
while (*s) {
|
| 218 |
if (*s++ != '%')
|
| 219 |
continue;
|
| 220 |
while (!strchr(allPoss, *s))
|
| 221 |
s++;
|
| 222 |
if (strchr(match, *s))
|
| 223 |
break;
|
| 224 |
s++;
|
| 225 |
}
|
| 226 |
return (*s != '\0')*(s - tst);
|
| 227 |
}
|
| 228 |
|
| 229 |
// Add a modifier and arguments, opening output file(s)
|
| 230 |
bool
|
| 231 |
RcontribSimulManager::AddModifier(const char *modn, const char *outspec,
|
| 232 |
const char *prms, const char *binval, int bincnt)
|
| 233 |
{
|
| 234 |
if (!modn | !outspec || !*modn | !*outspec) {
|
| 235 |
error(WARNING, "ignoring bad call to AddModifier()");
|
| 236 |
return false;
|
| 237 |
}
|
| 238 |
if (*outspec == '!') {
|
| 239 |
error(USER, "command output not supported by RcontribSimulManager");
|
| 240 |
return false;
|
| 241 |
}
|
| 242 |
if (!nChan) { // initial call?
|
| 243 |
if ((xres < 0) | (yres <= 0)) {
|
| 244 |
error(USER, "xres, yres must be set before first modifier");
|
| 245 |
return false;
|
| 246 |
}
|
| 247 |
if (!SetDataFormat(dtyp))
|
| 248 |
return false;
|
| 249 |
nChan = NCSAMP;
|
| 250 |
} else if (nChan != NCSAMP) {
|
| 251 |
error(USER, "# spectral channels must be fixed in AddModifier()");
|
| 252 |
return false;
|
| 253 |
}
|
| 254 |
if (Ready()) {
|
| 255 |
error(INTERNAL, "call to AddModifier() after PrepOutput()");
|
| 256 |
return false;
|
| 257 |
}
|
| 258 |
LUENT * lp = lu_find(&modLUT, modn);
|
| 259 |
if (lp->data) {
|
| 260 |
sprintf(errmsg, "duplicate modifier '%s'", modn);
|
| 261 |
error(USER, errmsg);
|
| 262 |
return false;
|
| 263 |
}
|
| 264 |
if (!lp->key) // create new entry
|
| 265 |
lp->key = strcpy((char *)emalloc(strlen(modn)+1), modn);
|
| 266 |
|
| 267 |
RcontribMod * mp = NewRcMod(prms, binval, bincnt);
|
| 268 |
if (!mp) return false;
|
| 269 |
lp->data = (char *)mp;
|
| 270 |
const int modndx = hasFormat(outspec, "sb");
|
| 271 |
const int binndx = hasFormat(outspec, "diouxX");
|
| 272 |
int bin0 = 0;
|
| 273 |
char fnbuf[512];
|
| 274 |
if (!modndx || (binndx > 0) & (modndx > binndx))
|
| 275 |
sprintf(fnbuf, outspec, bin0, modn);
|
| 276 |
else
|
| 277 |
sprintf(fnbuf, outspec, modn, bin0);
|
| 278 |
RcontribOutput * olast = NULL;
|
| 279 |
RcontribOutput * op;
|
| 280 |
for (op = outList; op; op = (olast=op)->next) {
|
| 281 |
if (strcmp(op->GetName(), fnbuf))
|
| 282 |
continue;
|
| 283 |
if (modndx) { // this ain't right
|
| 284 |
sprintf(errmsg, "output name collision for '%s'", fnbuf);
|
| 285 |
error(USER, errmsg);
|
| 286 |
return false;
|
| 287 |
}
|
| 288 |
if ((binndx > 0) & (xres > 0)) {
|
| 289 |
sprintf(fnbuf, outspec, ++bin0);
|
| 290 |
continue; // each bin goes to another image
|
| 291 |
}
|
| 292 |
mp->coffset = op->rowBytes; // else add to what's there
|
| 293 |
break;
|
| 294 |
}
|
| 295 |
if (!op) { // create new output channel?
|
| 296 |
op = new RcontribOutput(fnbuf);
|
| 297 |
if (olast) olast->next = op;
|
| 298 |
else outList = op;
|
| 299 |
}
|
| 300 |
mp->opl = op; // first (maybe only) output channel
|
| 301 |
if (modndx) // remember modifier if part of name
|
| 302 |
op->omod = lp->key;
|
| 303 |
if (binndx) { // append output image/bin list
|
| 304 |
op->rowBytes += dsiz;
|
| 305 |
op->obin = bin0;
|
| 306 |
for (bincnt = 1; bincnt < mp->nbins; bincnt++) {
|
| 307 |
if (!modndx || (binndx > 0) & (modndx > binndx))
|
| 308 |
sprintf(fnbuf, outspec, bin0+bincnt, modn);
|
| 309 |
else
|
| 310 |
sprintf(fnbuf, outspec, modn, bin0+bincnt);
|
| 311 |
if (!op->next) {
|
| 312 |
olast = op;
|
| 313 |
olast->next = op = new RcontribOutput(fnbuf);
|
| 314 |
if (modndx) op->omod = lp->key;
|
| 315 |
op->obin = bin0+bincnt;
|
| 316 |
} else {
|
| 317 |
op = op->next;
|
| 318 |
CHECK(op->obin != bin0+bincnt, CONSISTENCY,
|
| 319 |
"bin number mismatch in AddModifier()");
|
| 320 |
}
|
| 321 |
CHECK(op->rowBytes != mp->coffset, CONSISTENCY,
|
| 322 |
"row offset mismatch in AddModifier()");
|
| 323 |
op->rowBytes += dsiz;
|
| 324 |
}
|
| 325 |
} else // else send all results to this channel
|
| 326 |
op->rowBytes += mp->nbins*dsiz;
|
| 327 |
return true;
|
| 328 |
}
|
| 329 |
|
| 330 |
// Add a file of modifiers with associated arguments
|
| 331 |
bool
|
| 332 |
RcontribSimulManager::AddModFile(const char *modfn, const char *outspec,
|
| 333 |
const char *prms,
|
| 334 |
const char *binval, int bincnt)
|
| 335 |
{
|
| 336 |
char * path = getpath(const_cast<char *>(modfn),
|
| 337 |
getrlibpath(), R_OK);
|
| 338 |
FILE * fp;
|
| 339 |
if (!path || !(fp = fopen(path, "r"))) {
|
| 340 |
sprintf(errmsg, "cannot %s modifier file '%s'",
|
| 341 |
path ? "open" : "find", modfn);
|
| 342 |
error(SYSTEM, errmsg);
|
| 343 |
return false;
|
| 344 |
}
|
| 345 |
char mod[MAXSTR];
|
| 346 |
while (fgetword(mod, sizeof(mod), fp))
|
| 347 |
if (!AddModifier(mod, outspec, prms, binval, bincnt)) {
|
| 348 |
fclose(fp);
|
| 349 |
return false;
|
| 350 |
}
|
| 351 |
fclose(fp);
|
| 352 |
return true;
|
| 353 |
}
|
| 354 |
|
| 355 |
// call-back to check if modifier has been loaded
|
| 356 |
static int
|
| 357 |
checkModExists(const LUENT *lp, void *p)
|
| 358 |
{
|
| 359 |
OBJECT mod = modifier(lp->key);
|
| 360 |
|
| 361 |
if ((mod != OVOID) & (mod < nsceneobjs))
|
| 362 |
return 1;
|
| 363 |
|
| 364 |
sprintf(errmsg, "tracked modifier '%s' not found in main scene", lp->key);
|
| 365 |
error(WARNING, errmsg);
|
| 366 |
return 0;
|
| 367 |
}
|
| 368 |
|
| 369 |
// Prepare output channels and return # completed rows
|
| 370 |
int
|
| 371 |
RcontribSimulManager::PrepOutput()
|
| 372 |
{
|
| 373 |
if (!outList || !RtraceSimulManager::Ready()) {
|
| 374 |
error(INTERNAL, "PrepOutput() called before octree & modifiers set");
|
| 375 |
return -1;
|
| 376 |
}
|
| 377 |
if (!cdsF) {
|
| 378 |
error(INTERNAL, "missing RdataShare constructor call (cdsF)");
|
| 379 |
return -1;
|
| 380 |
}
|
| 381 |
if (lu_doall(&modLUT, checkModExists, NULL) < 0)
|
| 382 |
return -1;
|
| 383 |
|
| 384 |
outList->nRows = yres * (xres + !xres); // all outputs have same #rows
|
| 385 |
int remWarnings = 20;
|
| 386 |
for (RcontribOutput *op = outList; op; op = op->next) {
|
| 387 |
if (op->rData) {
|
| 388 |
error(INTERNAL, "output channel already open in PrepOutput()");
|
| 389 |
return -1;
|
| 390 |
}
|
| 391 |
op->nRows = outList->nRows;
|
| 392 |
op->rData = (*cdsF)(op->ofname, outOp,
|
| 393 |
GetHeadLen()+1024 + op->nRows*op->rowBytes);
|
| 394 |
freeqstr(op->ofname); op->ofname = NULL;
|
| 395 |
if (outOp == RCOrecover) {
|
| 396 |
int rd = op->CheckHeader(this);
|
| 397 |
if (rd < 0)
|
| 398 |
return -1;
|
| 399 |
if (rd >= op->nRows) {
|
| 400 |
if (remWarnings > 0) {
|
| 401 |
sprintf(errmsg, "recovered output '%s' is complete",
|
| 402 |
op->GetName());
|
| 403 |
error(WARNING, --remWarnings ? errmsg : "etc...");
|
| 404 |
}
|
| 405 |
rd = op->nRows;
|
| 406 |
}
|
| 407 |
if (!rInPos | (rInPos > rd)) rInPos = rd;
|
| 408 |
} else if (!op->NewHeader(this))
|
| 409 |
return -1;
|
| 410 |
// make sure there's room
|
| 411 |
if (op->rData->GetSize() < op->begData + op->nRows*op->rowBytes &&
|
| 412 |
!op->rData->Resize(op->begData + op->nRows*op->rowBytes))
|
| 413 |
return -1; // calls error() for us
|
| 414 |
}
|
| 415 |
rowsDone.NewBitMap(outList->nRows); // create row completion map
|
| 416 |
rowsDone.ClearBits(0, rInPos, true);
|
| 417 |
return rInPos;
|
| 418 |
}
|
| 419 |
|
| 420 |
// Create header in open write-only channel
|
| 421 |
bool
|
| 422 |
RcontribOutput::NewHeader(const RcontribSimulManager *rcp)
|
| 423 |
{
|
| 424 |
int headlim = rcp->GetHeadLen() + 1024;
|
| 425 |
char * hdr = (char *)rData->GetMemory(0, headlim, 0);
|
| 426 |
int esiz;
|
| 427 |
const int etyp = rcp->GetFormat(&esiz);
|
| 428 |
|
| 429 |
strcpy(hdr, HDRSTR);
|
| 430 |
strcat(hdr, "RADIANCE\n");
|
| 431 |
begData = strlen(hdr);
|
| 432 |
strcpy(hdr+begData, rcp->GetHeadStr());
|
| 433 |
begData += rcp->GetHeadLen();
|
| 434 |
if (omod) {
|
| 435 |
sprintf(hdr+begData, "MODIFIER=%s\n", omod);
|
| 436 |
begData += strlen(hdr+begData);
|
| 437 |
}
|
| 438 |
if (obin >= 0) {
|
| 439 |
sprintf(hdr+begData, "BIN=%d\n", obin);
|
| 440 |
begData += strlen(hdr+begData);
|
| 441 |
}
|
| 442 |
strcpy(hdr+begData, ROWZEROSTR);
|
| 443 |
rowCountPos = begData+LNROWSTR;
|
| 444 |
begData += sizeof(ROWZEROSTR)-1;
|
| 445 |
if (!rcp->xres | (rowBytes > esiz)) {
|
| 446 |
sprintf(hdr+begData, "NCOLS=%d\n", int(rowBytes/esiz));
|
| 447 |
begData += strlen(hdr+begData);
|
| 448 |
}
|
| 449 |
sprintf(hdr+begData, "%s%d\n", NCOMPSTR, NCSAMP);
|
| 450 |
begData += strlen(hdr+begData);
|
| 451 |
if (NCSAMP > 3) {
|
| 452 |
sprintf(hdr+begData, "%s %f %f %f %f\n", WLSPLTSTR,
|
| 453 |
WLPART[0], WLPART[1], WLPART[2], WLPART[3]);
|
| 454 |
begData += strlen(hdr+begData);
|
| 455 |
}
|
| 456 |
if (etyp != 'c') {
|
| 457 |
sprintf(hdr+begData, "%s%d\n", BIGEND, nativebigendian());
|
| 458 |
begData += strlen(hdr+begData);
|
| 459 |
}
|
| 460 |
int align = 0;
|
| 461 |
switch (etyp) {
|
| 462 |
case 'f':
|
| 463 |
align = sizeof(float);
|
| 464 |
break;
|
| 465 |
case 'd':
|
| 466 |
align = sizeof(double);
|
| 467 |
break;
|
| 468 |
case 'c':
|
| 469 |
break;
|
| 470 |
default:
|
| 471 |
error(INTERNAL, "unsupported data type in NewHeader()");
|
| 472 |
return false;
|
| 473 |
}
|
| 474 |
strcpy(hdr+begData, FMTSTR); // write format string
|
| 475 |
begData += strlen(hdr+begData);
|
| 476 |
strcpy(hdr+begData, formstr(etyp));
|
| 477 |
begData += strlen(hdr+begData);
|
| 478 |
if (align) // align data at end of header
|
| 479 |
while ((begData+2) % align)
|
| 480 |
hdr[begData++] = ' ';
|
| 481 |
hdr[begData++] = '\n'; // EOL for data format
|
| 482 |
hdr[begData++] = '\n'; // end of nominal header
|
| 483 |
if ((rcp->xres > 0) & (rowBytes == esiz)) { // tack on resolution string?
|
| 484 |
sprintf(hdr+begData, PIXSTDFMT, rcp->yres, rcp->xres);
|
| 485 |
begData += strlen(hdr+begData);
|
| 486 |
}
|
| 487 |
return rData->ReleaseMemory(hdr, RDSwrite);
|
| 488 |
}
|
| 489 |
|
| 490 |
// find string argument in header for named variable
|
| 491 |
static const char *
|
| 492 |
findArgs(const char *hdr, const char *vnm, int len)
|
| 493 |
{
|
| 494 |
const char * npos = strnstr(hdr, vnm, len);
|
| 495 |
|
| 496 |
if (!npos) return NULL;
|
| 497 |
|
| 498 |
npos += strlen(vnm); // find start of (first) argument
|
| 499 |
len -= npos - hdr;
|
| 500 |
while (len-- > 0 && (*npos == '=') | isspace(*npos))
|
| 501 |
if (*npos++ == '\n')
|
| 502 |
return NULL;
|
| 503 |
|
| 504 |
return (len >= 0) ? npos : NULL;
|
| 505 |
}
|
| 506 |
|
| 507 |
// Load and check header in read/write channel
|
| 508 |
int
|
| 509 |
RcontribOutput::CheckHeader(const RcontribSimulManager *rcp)
|
| 510 |
{
|
| 511 |
int esiz;
|
| 512 |
const int etyp = rcp->GetFormat(&esiz);
|
| 513 |
const int maxlen = rcp->GetHeadLen() + 1024;
|
| 514 |
char * hdr = (char *)rData->GetMemory(0, maxlen, RDSread);
|
| 515 |
const char * cp;
|
| 516 |
// find end of header
|
| 517 |
if (!hdr || !(cp = strnstr(hdr, "\n\n", maxlen))) {
|
| 518 |
sprintf(errmsg, "cannot find end of header in '%s'", GetName());
|
| 519 |
error(USER, errmsg);
|
| 520 |
return -1;
|
| 521 |
}
|
| 522 |
begData = cp - hdr + 1; // increment again at end
|
| 523 |
// check # components
|
| 524 |
if (((cp = findArgs(hdr, NCOMPSTR, begData)) ? atoi(cp) : 3) != NCSAMP) {
|
| 525 |
sprintf(errmsg, "expected %s%d in '%s'", NCOMPSTR, NCSAMP, GetName());
|
| 526 |
error(USER, errmsg);
|
| 527 |
return -1;
|
| 528 |
}
|
| 529 |
// check format
|
| 530 |
if (!(cp = findArgs(hdr, FMTSTR, begData)) ||
|
| 531 |
strncmp(cp, formstr(etyp), strlen(formstr(etyp)))) {
|
| 532 |
sprintf(errmsg, "expected %s%s in '%s'", FMTSTR, formstr(etyp), GetName());
|
| 533 |
error(USER, errmsg);
|
| 534 |
return -1;
|
| 535 |
}
|
| 536 |
// check #columns
|
| 537 |
if (((cp = findArgs(hdr, "NCOLS=", begData)) && atoi(cp)*esiz != rowBytes) ||
|
| 538 |
!rcp->xres | (rowBytes > esiz)) {
|
| 539 |
sprintf(errmsg, "expected NCOLS=%d in '%s'",
|
| 540 |
int(rowBytes/esiz), GetName());
|
| 541 |
error(USER, errmsg);
|
| 542 |
return -1;
|
| 543 |
}
|
| 544 |
// find row count
|
| 545 |
if (!(cp = findArgs(hdr, "NROWS=", begData))) {
|
| 546 |
sprintf(errmsg, "missing NROWS in '%s'", GetName());
|
| 547 |
error(USER, errmsg);
|
| 548 |
return -1;
|
| 549 |
}
|
| 550 |
rowCountPos = cp - hdr;
|
| 551 |
int rlast = atoi(cp);
|
| 552 |
begData++; // advance past closing EOL
|
| 553 |
if ((rcp->xres > 0) & (rowBytes == esiz)) { // check/skip resolution string?
|
| 554 |
char rbuf[64];
|
| 555 |
sprintf(rbuf, PIXSTDFMT, rcp->yres, rcp->xres);
|
| 556 |
int rlen = strlen(rbuf);
|
| 557 |
if (strncmp(rbuf, hdr+begData, rlen)) {
|
| 558 |
sprintf(errmsg, "bad resolution string in '%s'", GetName());
|
| 559 |
error(USER, errmsg);
|
| 560 |
return -1;
|
| 561 |
}
|
| 562 |
begData += rlen;
|
| 563 |
}
|
| 564 |
// XXX assume the rest is OK: endianness, wavelength splits, modifier, bin
|
| 565 |
return rData->ReleaseMemory(hdr, 0) ? rlast : -1;
|
| 566 |
}
|
| 567 |
|
| 568 |
// Rewind calculation (previous results unchanged)
|
| 569 |
bool
|
| 570 |
RcontribSimulManager::ResetRow(int r)
|
| 571 |
{
|
| 572 |
if (!rowsDone.Length() | (0 > r) | (r >= rInPos)) {
|
| 573 |
error(WARNING, "ignoring bad call to ResetRow()");
|
| 574 |
return (r == rInPos);
|
| 575 |
}
|
| 576 |
FlushQueue(); // finish current and reset
|
| 577 |
for (RcontribOutput *op = outList; op; op = op->next)
|
| 578 |
if (!op->SetRowsDone(r))
|
| 579 |
return false;
|
| 580 |
|
| 581 |
rowsDone.ClearBits(r, rInPos-r, false);
|
| 582 |
rInPos = r;
|
| 583 |
return true;
|
| 584 |
}
|
| 585 |
|
| 586 |
// call-back for averaging each modifier's contributions to assigned channel(s)
|
| 587 |
static int
|
| 588 |
putModContrib(const LUENT *lp, void *p)
|
| 589 |
{
|
| 590 |
RcontribMod * mp = (RcontribMod *)lp->data;
|
| 591 |
const RcontribSimulManager * rcp = (const RcontribSimulManager *)p;
|
| 592 |
const double sca = 1./rcp->accum;
|
| 593 |
const DCOLORV * dvp = mp->cbin;
|
| 594 |
RcontribOutput * op = mp->opl;
|
| 595 |
int i, n;
|
| 596 |
|
| 597 |
switch (rcp->GetFormat()) { // conversion based on output type
|
| 598 |
case 'd': {
|
| 599 |
double * dvo = (double *)op->InsertionP(mp->coffset);
|
| 600 |
for (n = mp->nbins; n--; ) {
|
| 601 |
for (i = 0; i < NCSAMP; i++)
|
| 602 |
*dvo++ = *dvp++ * sca;
|
| 603 |
if ((op->obin >= 0) & (n > 0))
|
| 604 |
dvo = (double *)(op = op->Next())->InsertionP(mp->coffset);
|
| 605 |
}
|
| 606 |
} break;
|
| 607 |
case 'f': {
|
| 608 |
float * fvo = (float *)op->InsertionP(mp->coffset);
|
| 609 |
for (n = mp->nbins; n--; ) {
|
| 610 |
for (i = 0; i < NCSAMP; i++)
|
| 611 |
*fvo++ = float(*dvp++ * sca);
|
| 612 |
if ((op->obin >= 0) & (n > 0))
|
| 613 |
fvo = (float *)(op = op->Next())->InsertionP(mp->coffset);
|
| 614 |
}
|
| 615 |
} break;
|
| 616 |
case 'c': {
|
| 617 |
COLRV * cvo = (COLRV *)op->InsertionP(mp->coffset);
|
| 618 |
for (n = mp->nbins; n--; ) {
|
| 619 |
SCOLOR scol;
|
| 620 |
for (i = 0; i < NCSAMP; i++)
|
| 621 |
scol[i] = COLORV(*dvp++ * sca);
|
| 622 |
scolor_scolr(cvo, scol);
|
| 623 |
cvo += LSCOLR;
|
| 624 |
if ((op->obin >= 0) & (n > 0))
|
| 625 |
cvo = (COLRV *)(op = op->Next())->InsertionP(mp->coffset);
|
| 626 |
}
|
| 627 |
} break;
|
| 628 |
default:
|
| 629 |
error(CONSISTENCY, "unsupported output type in putModContrib()");
|
| 630 |
return -1;
|
| 631 |
}
|
| 632 |
// clear for next tally
|
| 633 |
memset(mp->cbin, 0, sizeof(DCOLORV)*NCSAMP*mp->nbins);
|
| 634 |
return 1;
|
| 635 |
}
|
| 636 |
|
| 637 |
// Add a ray/bundle to compute next record
|
| 638 |
int
|
| 639 |
RcontribSimulManager::ComputeRecord(const FVECT orig_direc[])
|
| 640 |
{
|
| 641 |
if (!Ready())
|
| 642 |
return 0;
|
| 643 |
if (rInPos >= outList->nRows) {
|
| 644 |
error(WARNING, "ComputeRecord() called after last record");
|
| 645 |
return 0;
|
| 646 |
}
|
| 647 |
if (nkids > 0) { // in parent process?
|
| 648 |
int k = GetChild(false); // updates output rows
|
| 649 |
if (k < 0) return -1; // someone died?
|
| 650 |
RowAssignment rass;
|
| 651 |
rass.row = kidRow[k] = rInPos++;
|
| 652 |
rass.ac = accum;
|
| 653 |
if (write(kid[k].w, &rass, sizeof(rass)) != sizeof(rass) ||
|
| 654 |
writebuf(kid[k].w, orig_direc, sizeof(FVECT)*2*accum)
|
| 655 |
!= sizeof(FVECT)*2*accum) {
|
| 656 |
error(SYSTEM, "cannot write to child; dead process?");
|
| 657 |
return -1;
|
| 658 |
}
|
| 659 |
return accum; // tracing/output happens in child
|
| 660 |
}
|
| 661 |
if (NCSAMP != nChan) {
|
| 662 |
error(INTERNAL, "number of color channels must remain fixed");
|
| 663 |
return -1;
|
| 664 |
}
|
| 665 |
// actual work is done here...
|
| 666 |
if (EnqueueBundle(orig_direc, accum) < 0)
|
| 667 |
return -1;
|
| 668 |
|
| 669 |
RcontribOutput * op; // prepare output buffers
|
| 670 |
for (op = outList; op; op = op->next)
|
| 671 |
if (!op->GetRow(rInPos))
|
| 672 |
return -1;
|
| 673 |
// convert averages & clear
|
| 674 |
if (lu_doall(&modLUT, putModContrib, this) < 0)
|
| 675 |
return -1;
|
| 676 |
// write buffers
|
| 677 |
for (op = outList; op; op = op->next)
|
| 678 |
op->DoneRow();
|
| 679 |
|
| 680 |
if (!nkids) // update row if solo process
|
| 681 |
UpdateRowsDone(rInPos++); // XXX increment here is critical
|
| 682 |
|
| 683 |
return accum;
|
| 684 |
}
|
| 685 |
|
| 686 |
// Get next available child, returning index or -1 if forceWait & idling
|
| 687 |
int
|
| 688 |
RcontribSimulManager::GetChild(bool forceWait)
|
| 689 |
{
|
| 690 |
if (nkids <= 0)
|
| 691 |
return -1;
|
| 692 |
// take inventory
|
| 693 |
int pn, n = 0;
|
| 694 |
fd_set readset, errset;
|
| 695 |
FD_ZERO(&readset); FD_ZERO(&errset);
|
| 696 |
for (pn = nkids; pn--; ) {
|
| 697 |
if (kidRow[pn] < 0) { // child already ready?
|
| 698 |
if (forceWait) continue;
|
| 699 |
return pn; // good enough
|
| 700 |
}
|
| 701 |
FD_SET(kid[pn].r, &readset); // will check on this one
|
| 702 |
FD_SET(kid[pn].r, &errset);
|
| 703 |
if (kid[pn].r >= n)
|
| 704 |
n = kid[pn].r + 1;
|
| 705 |
}
|
| 706 |
if (!n) // every child is idle?
|
| 707 |
return -1;
|
| 708 |
// wait on "busy" child(ren)
|
| 709 |
while ((n = select(n, &readset, NULL, &errset, NULL)) <= 0)
|
| 710 |
if (errno != EINTR) {
|
| 711 |
error(SYSTEM, "select call failed in GetChild()");
|
| 712 |
return -1;
|
| 713 |
}
|
| 714 |
char buf[sizeof(ROW_DONE)] = "X";
|
| 715 |
pn = -1; // get flags set by select
|
| 716 |
for (n = nkids; n--; )
|
| 717 |
if (kidRow[n] >= 0 &&
|
| 718 |
FD_ISSET(kid[n].r, &readset) |
|
| 719 |
FD_ISSET(kid[n].r, &errset)) {
|
| 720 |
// check for error
|
| 721 |
if (FD_ISSET(kid[n].r, &errset) ||
|
| 722 |
read(kid[n].r, buf, sizeof(ROW_DONE)) <= 0 ||
|
| 723 |
memcmp(buf, ROW_DONE, sizeof(ROW_DONE)))
|
| 724 |
return -1;
|
| 725 |
// update output row counts
|
| 726 |
UpdateRowsDone(kidRow[n]);
|
| 727 |
kidRow[n] = -1; // flag child available
|
| 728 |
pn = n;
|
| 729 |
}
|
| 730 |
return pn;
|
| 731 |
}
|
| 732 |
|
| 733 |
// Update row completion bitmap and update outputs (does not change rInPos)
|
| 734 |
bool
|
| 735 |
RcontribSimulManager::UpdateRowsDone(int r)
|
| 736 |
{
|
| 737 |
if (!rowsDone.TestAndSet(r)) {
|
| 738 |
error(WARNING, "redundant call to UpdateRowsDone()");
|
| 739 |
return false;
|
| 740 |
}
|
| 741 |
int nDone = GetRowFinished();
|
| 742 |
if (nDone <= r)
|
| 743 |
return true; // nothing to update, yet
|
| 744 |
for (RcontribOutput *op = outList; op; op = op->next)
|
| 745 |
if (!op->SetRowsDone(nDone))
|
| 746 |
return false;
|
| 747 |
return true; // up-to-date
|
| 748 |
}
|
| 749 |
|
| 750 |
// Run rcontrib child process (never returns)
|
| 751 |
void
|
| 752 |
RcontribSimulManager::RunChild()
|
| 753 |
{
|
| 754 |
FVECT * vecList = NULL;
|
| 755 |
RowAssignment rass;
|
| 756 |
ssize_t nr;
|
| 757 |
|
| 758 |
accum = 0;
|
| 759 |
errno = 0;
|
| 760 |
while ((nr = read(0, &rass, sizeof(rass))) == sizeof(rass)) {
|
| 761 |
if (!rass.ac) {
|
| 762 |
error(CONSISTENCY, "bad accumulator count in child");
|
| 763 |
exit(1);
|
| 764 |
}
|
| 765 |
if (rass.ac > accum) {
|
| 766 |
efree(vecList);
|
| 767 |
vecList = (FVECT *)emalloc(sizeof(FVECT)*2*rass.ac);
|
| 768 |
}
|
| 769 |
accum = rass.ac;
|
| 770 |
rInPos = rass.row;
|
| 771 |
|
| 772 |
if (readbuf(0, vecList, sizeof(FVECT)*2*accum) !=
|
| 773 |
sizeof(FVECT)*2*accum)
|
| 774 |
break;
|
| 775 |
|
| 776 |
if (ComputeRecord(vecList) <= 0)
|
| 777 |
exit(1);
|
| 778 |
// signal this row is done
|
| 779 |
if (write(1, ROW_DONE, sizeof(ROW_DONE)) != sizeof(ROW_DONE))
|
| 780 |
exit(1);
|
| 781 |
}
|
| 782 |
if (nr) {
|
| 783 |
error(SYSTEM, "read error in child process");
|
| 784 |
exit(1);
|
| 785 |
}
|
| 786 |
exit(0);
|
| 787 |
}
|
| 788 |
|
| 789 |
// Add child processes as indicated
|
| 790 |
bool
|
| 791 |
RcontribSimulManager::StartKids(int n2go)
|
| 792 |
{
|
| 793 |
if ((n2go <= 0) | (nkids + n2go <= 1))
|
| 794 |
return false;
|
| 795 |
|
| 796 |
if (!nkids)
|
| 797 |
cow_memshare(); // preload objects
|
| 798 |
|
| 799 |
n2go += nkids; // => desired brood size
|
| 800 |
kid = (SUBPROC *)erealloc(kid, sizeof(SUBPROC)*n2go);
|
| 801 |
kidRow = (int32 *)erealloc(kidRow, sizeof(int32)*n2go);
|
| 802 |
|
| 803 |
fflush(stdout); // shouldn't use, anyway
|
| 804 |
while (nkids < n2go) {
|
| 805 |
kid[nkids] = sp_inactive;
|
| 806 |
int rv = open_process(&kid[nkids], NULL);
|
| 807 |
if (!rv) { // in child process?
|
| 808 |
while (nkids-- > 0) {
|
| 809 |
close(kid[nkids].r);
|
| 810 |
close(kid[nkids].w);
|
| 811 |
}
|
| 812 |
free(kid); free(kidRow);
|
| 813 |
kid = NULL; kidRow = NULL;
|
| 814 |
RunChild(); // should never return
|
| 815 |
_exit(1);
|
| 816 |
}
|
| 817 |
if (rv < 0) {
|
| 818 |
error(SYSTEM, "cannot fork worker process");
|
| 819 |
return false;
|
| 820 |
}
|
| 821 |
kidRow[nkids++] = -1; // newborn is ready
|
| 822 |
}
|
| 823 |
return true;
|
| 824 |
}
|
| 825 |
|
| 826 |
// Reap the indicated number of children (all if 0)
|
| 827 |
int
|
| 828 |
RcontribSimulManager::StopKids(int n2end)
|
| 829 |
{
|
| 830 |
if (nkids <= 0)
|
| 831 |
return 0;
|
| 832 |
FlushQueue();
|
| 833 |
int status = 0;
|
| 834 |
if (!n2end | (n2end >= nkids)) { // end all subprocesses?
|
| 835 |
status = close_processes(kid, nkids);
|
| 836 |
free(kid); free(kidRow);
|
| 837 |
kid = NULL; kidRow = NULL;
|
| 838 |
nkids = 0;
|
| 839 |
} else { // else shrink family
|
| 840 |
int st;
|
| 841 |
while (n2end-- > 0)
|
| 842 |
if ((st = close_process(&kid[--nkids])) > 0)
|
| 843 |
status = st;
|
| 844 |
// could call realloc(), but it hardly matters
|
| 845 |
}
|
| 846 |
if (status) {
|
| 847 |
sprintf(errmsg, "non-zero (%d) status from child", status);
|
| 848 |
error(WARNING, errmsg);
|
| 849 |
}
|
| 850 |
return status;
|
| 851 |
}
|
| 852 |
|
| 853 |
// Set number of computation threads (0 => #cores)
|
| 854 |
int
|
| 855 |
RcontribSimulManager::SetThreadCount(int nt)
|
| 856 |
{
|
| 857 |
if (!Ready()) {
|
| 858 |
error(INTERNAL, "must call PrepOutput() before SetThreadCount()");
|
| 859 |
return 0;
|
| 860 |
}
|
| 861 |
if (nt < 0)
|
| 862 |
return NThreads();
|
| 863 |
if (!nt) nt = GetNCores();
|
| 864 |
int status = 0;
|
| 865 |
if (nt == 1)
|
| 866 |
status = StopKids();
|
| 867 |
else if (nt < nkids)
|
| 868 |
status = StopKids(nkids-nt);
|
| 869 |
else if (nt > nkids)
|
| 870 |
StartKids(nt-nkids);
|
| 871 |
if (status) {
|
| 872 |
sprintf(errmsg, "non-zero (%d) status from child", status);
|
| 873 |
error(WARNING, errmsg);
|
| 874 |
}
|
| 875 |
return NThreads();
|
| 876 |
}
|
