| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: RcontribSimulManager.cpp,v 2.15 2025/10/17 17:43:53 greg Exp $"; |
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#endif |
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/* |
| 5 |
* RcontribSimulManager.cpp |
| 6 |
* |
| 7 |
* Rcontrib simulation manager implementation |
| 8 |
* |
| 9 |
* Created by Greg Ward on 10/17/2024. |
| 10 |
*/ |
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|
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#include <unistd.h> |
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#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 |
|
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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 |
|
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// Modifier channel for recording contributions (no constructor/destructor) |
| 35 |
struct RcontribMod { |
| 36 |
RcontribOutput * opl; // pointer to first output channel |
| 37 |
char * params; // parameters string |
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EPNODE * binv; // bin expression (NULL if 1 bin) |
| 39 |
int nbins; // bin count this modifier |
| 40 |
int coffset; // column offset in bytes |
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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 |
} |
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}; |
| 48 |
|
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// Struct used to assign record calculation to child |
| 50 |
struct RowAssignment { |
| 51 |
uint32 row; // row to do |
| 52 |
uint32 ac; // accumulation count |
| 53 |
}; |
| 54 |
|
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static const char ROW_DONE[] = "ROW FINISHED\n"; |
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|
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// allocate rcontrib accumulator |
| 58 |
static RcontribMod * |
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NewRcMod(const char *prms, const char *binexpr, int ncbins) |
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{ |
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if (binexpr && !*binexpr) binexpr = NULL; |
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if (!prms) prms = ""; |
| 63 |
if ((ncbins > 1) & !binexpr) { |
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error(USER, "missing bin expression"); |
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return NULL; |
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} |
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if (ncbins < 1) ncbins = 1; |
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|
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RcontribMod * mp = (RcontribMod *)ecalloc(1, sizeof(RcontribMod) + |
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sizeof(DCOLORV)*(NCSAMP*ncbins-1) + |
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strlen(prms)+1); |
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|
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if (binexpr) { // get/check bin expression |
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mp->binv = eparse(const_cast<char *>(binexpr)); |
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if (mp->binv->type == NUM) { // constant expression (0)? |
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if ((int)evalue(mp->binv) != 0) { |
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sprintf(errmsg, "illegal non-zero constant for bin (%s)", |
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binexpr); |
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error(USER, errmsg); |
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} |
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if (ncbins > 1) { |
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sprintf(errmsg, "bad bin count (%d should be 1)", ncbins); |
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error(USER, errmsg); |
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} |
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epfree(mp->binv, true); |
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mp->binv = NULL; |
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prms = ""; |
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ncbins = 1; |
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} |
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} |
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mp->params = strcpy((char *)(mp->cbin + ncbins*NCSAMP), prms); |
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mp->nbins = ncbins; |
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return mp; |
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} |
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|
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// Free an RcontribMod (public for RcontribSimulManager constructor) |
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void |
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FreeRcMod(void *p) |
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{ |
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if (!p) return; |
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EPNODE * bep = (*(RcontribMod *)p).binv; |
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if (bep) epfree(bep, true); |
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efree(p); |
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} |
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|
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// Get format identifier |
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const char * |
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formstr(int f) |
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{ |
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switch (f) { |
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case 'a': return("ascii"); |
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case 'f': return("float"); |
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case 'd': return("double"); |
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case 'c': return(NCSAMP==3 ? COLRFMT : SPECFMT); |
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} |
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return("unknown"); |
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} |
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|
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// Our default data share function |
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RdataShare * |
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defDataShare(const char *name, RCOutputOp op, size_t siz) |
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{ |
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return new RdataShareMap(name, RSDOflags[op], siz); |
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} |
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|
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// Set output format ('f', 'd', or 'c') |
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bool |
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RcontribSimulManager::SetDataFormat(int ty) |
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{ |
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if (outList) { |
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error(INTERNAL, "cannot call SetDataFormat() after AddModifier()"); |
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return false; |
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} |
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switch (ty) { |
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case 'f': |
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dsiz = sizeof(float)*NCSAMP; |
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break; |
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case 'd': |
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dsiz = sizeof(double)*NCSAMP; |
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break; |
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case 'c': |
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dsiz = LSCOLR; |
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break; |
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default: |
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sprintf(errmsg, "unsupported output format '%c'", ty); |
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error(INTERNAL, errmsg); |
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return false; |
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} |
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dtyp = ty; |
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return true; |
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} |
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|
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// static call-back for rcontrib ray-tracing |
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int |
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RcontribSimulManager::RctCall(RAY *r, void *cd) |
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{ |
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if (!r->ro || r->ro->omod == OVOID) // hit nothing? |
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return 0; |
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// shadow ray not on source? |
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if (r->rsrc >= 0 && source[r->rsrc].so != r->ro) |
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return 0; |
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|
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const char * mname = objptr(r->ro->omod)->oname; |
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RcontribSimulManager * rcp = (RcontribSimulManager *)cd; |
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RcontribMod * mp = (RcontribMod *)lu_find(&rcp->modLUT,mname)->data; |
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if (!mp) |
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return 0; // not in our modifier list |
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|
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int bi = 0; // get bin index |
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if (mp->binv) { |
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worldfunc(RCCONTEXT, r); |
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set_eparams(mp->params); |
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double bval = evalue(mp->binv); |
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if (bval <= -.5) |
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return 0; // silently ignore negative bin index |
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bi = int(bval + .5); |
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} |
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DCOLORV * dvp = (*mp)[bi]; |
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if (!dvp) { |
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sprintf(errmsg, "bad bin number for '%s' (%d ignored)", mname, bi); |
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error(WARNING, errmsg); |
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return 0; |
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} |
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SCOLOR contr; |
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raycontrib(contr, r, PRIMARY); // compute coefficient |
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if (rcp->HasFlag(RCcontrib)) |
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smultscolor(contr, r->rcol); // -> value contribution |
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|
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for (int i = 0; i < NCSAMP; i++) |
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*dvp++ += contr[i]; // accumulate color/spectrum |
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return 1; |
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} |
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|
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// check for given format type in string, return last char position |
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static int |
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hasFormat(const char *tst, const char *match) |
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{ |
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static const char allPoss[] = "%diouxXfFeEgGaAcsb"; |
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const char * s = tst; |
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while (*s) { |
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if (*s++ != '%') |
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continue; |
| 203 |
while (!strchr(allPoss, *s)) |
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s++; |
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if (strchr(match, *s)) |
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break; |
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s++; |
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} |
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return (*s != '\0')*(s - tst); |
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} |
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|
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// Add a modifier and arguments, opening output file(s) |
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bool |
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RcontribSimulManager::AddModifier(const char *modn, const char *outspec, |
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const char *prms, const char *binval, int bincnt) |
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{ |
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if (!modn | !outspec || !*modn | !*outspec) { |
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error(WARNING, "ignoring bad call to AddModifier()"); |
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return false; |
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} |
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if (*outspec == '!') { |
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error(USER, "command output not supported by RcontribSimulManager"); |
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return false; |
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} |
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if (!nChan) { // initial call? |
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if ((xres < 0) | (yres <= 0)) { |
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error(USER, "xres, yres must be set before first modifier"); |
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return false; |
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} |
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if (!SetDataFormat(dtyp)) |
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return false; |
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nChan = NCSAMP; |
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} else if (nChan != NCSAMP) { |
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error(USER, "# spectral channels must be fixed in AddModifier()"); |
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return false; |
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} |
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if (Ready()) { |
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error(INTERNAL, "call to AddModifier() after PrepOutput()"); |
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return false; |
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} |
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LUENT * lp = lu_find(&modLUT, modn); |
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if (lp->data) { |
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sprintf(errmsg, "duplicate modifier '%s'", modn); |
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error(USER, errmsg); |
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return false; |
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} |
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if (!lp->key) // create new entry |
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lp->key = strcpy((char *)emalloc(strlen(modn)+1), modn); |
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|
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RcontribMod * mp = NewRcMod(prms, binval, bincnt); |
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if (!mp) return false; |
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lp->data = (char *)mp; |
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const int modndx = hasFormat(outspec, "sb"); |
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const int binndx = hasFormat(outspec, "diouxX"); |
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int bin0 = 0; |
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char fnbuf[512]; |
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if (!modndx || (binndx > 0) & (modndx > binndx)) |
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sprintf(fnbuf, outspec, bin0, modn); |
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else |
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sprintf(fnbuf, outspec, modn, bin0); |
| 261 |
RcontribOutput * olast = NULL; |
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RcontribOutput * op; |
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for (op = outList; op; op = (olast=op)->next) { |
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if (strcmp(op->GetName(), fnbuf)) |
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continue; |
| 266 |
if (modndx) { // this ain't right |
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sprintf(errmsg, "output name collision for '%s'", fnbuf); |
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error(USER, errmsg); |
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return false; |
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} |
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if ((binndx > 0) & (xres > 0)) { |
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sprintf(fnbuf, outspec, ++bin0); |
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continue; // each bin goes to another image |
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} |
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mp->coffset = op->rowBytes; // else add to what's there |
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break; |
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} |
| 278 |
if (!op) { // create new output channel? |
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op = new RcontribOutput(fnbuf); |
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if (olast) olast->next = op; |
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else outList = op; |
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} |
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mp->opl = op; // first (maybe only) output channel |
| 284 |
if (modndx) // remember modifier if part of name |
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op->omod = lp->key; |
| 286 |
if (binndx) { // append output image/bin list |
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op->rowBytes += dsiz; |
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op->obin = bin0; |
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for (bincnt = 1; bincnt < mp->nbins; bincnt++) { |
| 290 |
if (!modndx || (binndx > 0) & (modndx > binndx)) |
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sprintf(fnbuf, outspec, bin0+bincnt, modn); |
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else |
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sprintf(fnbuf, outspec, modn, bin0+bincnt); |
| 294 |
if (!op->next) { |
| 295 |
olast = op; |
| 296 |
olast->next = op = new RcontribOutput(fnbuf); |
| 297 |
if (modndx) op->omod = lp->key; |
| 298 |
op->obin = bin0+bincnt; |
| 299 |
} else { |
| 300 |
op = op->next; |
| 301 |
CHECK(op->obin != bin0+bincnt, CONSISTENCY, |
| 302 |
"bin number mismatch in AddModifier()"); |
| 303 |
} |
| 304 |
CHECK(op->rowBytes != mp->coffset, CONSISTENCY, |
| 305 |
"row offset mismatch in AddModifier()"); |
| 306 |
op->rowBytes += dsiz; |
| 307 |
} |
| 308 |
} else // else send all results to this channel |
| 309 |
op->rowBytes += mp->nbins*dsiz; |
| 310 |
return true; |
| 311 |
} |
| 312 |
|
| 313 |
// Add a file of modifiers with associated arguments |
| 314 |
bool |
| 315 |
RcontribSimulManager::AddModFile(const char *modfn, const char *outspec, |
| 316 |
const char *prms, |
| 317 |
const char *binval, int bincnt) |
| 318 |
{ |
| 319 |
char * path = getpath(const_cast<char *>(modfn), |
| 320 |
getrlibpath(), R_OK); |
| 321 |
FILE * fp; |
| 322 |
if (!path || !(fp = fopen(path, "r"))) { |
| 323 |
sprintf(errmsg, "cannot %s modifier file '%s'", |
| 324 |
path ? "open" : "find", modfn); |
| 325 |
error(SYSTEM, errmsg); |
| 326 |
return false; |
| 327 |
} |
| 328 |
char mod[MAXSTR]; |
| 329 |
while (fgetword(mod, sizeof(mod), fp)) |
| 330 |
if (!AddModifier(mod, outspec, prms, binval, bincnt)) { |
| 331 |
fclose(fp); |
| 332 |
return false; |
| 333 |
} |
| 334 |
fclose(fp); |
| 335 |
return true; |
| 336 |
} |
| 337 |
|
| 338 |
// call-back to check if modifier has been loaded |
| 339 |
static int |
| 340 |
checkModExists(const LUENT *lp, void *p) |
| 341 |
{ |
| 342 |
OBJECT mod = modifier(lp->key); |
| 343 |
|
| 344 |
if ((mod != OVOID) & (mod < nsceneobjs)) |
| 345 |
return 1; |
| 346 |
|
| 347 |
sprintf(errmsg, "tracked modifier '%s' not found in main scene", lp->key); |
| 348 |
error(WARNING, errmsg); |
| 349 |
return 0; |
| 350 |
} |
| 351 |
|
| 352 |
// Prepare output channels and return # completed rows |
| 353 |
int |
| 354 |
RcontribSimulManager::PrepOutput() |
| 355 |
{ |
| 356 |
if (!outList || !RtraceSimulManager::Ready()) { |
| 357 |
error(INTERNAL, "PrepOutput() called before octree & modifiers set"); |
| 358 |
return -1; |
| 359 |
} |
| 360 |
if (!cdsF) { |
| 361 |
error(INTERNAL, "missing RdataShare constructor call (cdsF)"); |
| 362 |
return -1; |
| 363 |
} |
| 364 |
if (lu_doall(&modLUT, checkModExists, NULL) < 0) |
| 365 |
return -1; |
| 366 |
|
| 367 |
outList->nRows = yres * (xres + !xres); // all outputs have same #rows |
| 368 |
int remWarnings = 20; |
| 369 |
for (RcontribOutput *op = outList; op; op = op->next) { |
| 370 |
if (op->rData) { |
| 371 |
error(INTERNAL, "output channel already open in PrepOutput()"); |
| 372 |
return -1; |
| 373 |
} |
| 374 |
op->nRows = outList->nRows; |
| 375 |
op->rData = (*cdsF)(op->ofname, outOp, |
| 376 |
GetHeadLen()+1024 + op->nRows*op->rowBytes); |
| 377 |
freeqstr(op->ofname); op->ofname = NULL; |
| 378 |
if (outOp == RCOrecover) { |
| 379 |
int rd = op->CheckHeader(this); |
| 380 |
if (rd < 0) |
| 381 |
return -1; |
| 382 |
if (rd >= op->nRows) { |
| 383 |
if (remWarnings >= 0) { |
| 384 |
sprintf(errmsg, "recovered output '%s' is complete", |
| 385 |
op->GetName()); |
| 386 |
error(WARNING, --remWarnings ? errmsg : "etc..."); |
| 387 |
} |
| 388 |
rd = op->nRows; |
| 389 |
} |
| 390 |
if (!rInPos | (rInPos > rd)) rInPos = rd; |
| 391 |
} else if (!op->NewHeader(this)) |
| 392 |
return -1; |
| 393 |
// make sure there's room |
| 394 |
if (op->rData->GetSize() < op->begData + op->nRows*op->rowBytes && |
| 395 |
!op->rData->Resize(op->begData + op->nRows*op->rowBytes)) |
| 396 |
return -1; // calls error() for us |
| 397 |
} |
| 398 |
rowsDone.NewBitMap(outList->nRows); // create row completion map |
| 399 |
rowsDone.ClearBits(0, rInPos, true); |
| 400 |
return rInPos; |
| 401 |
} |
| 402 |
|
| 403 |
// Create header in open write-only channel |
| 404 |
bool |
| 405 |
RcontribOutput::NewHeader(const RcontribSimulManager *rcp) |
| 406 |
{ |
| 407 |
int headlim = rcp->GetHeadLen() + 1024; |
| 408 |
char * hdr = (char *)rData->GetMemory(0, headlim, 0); |
| 409 |
int esiz; |
| 410 |
const int etyp = rcp->GetFormat(&esiz); |
| 411 |
|
| 412 |
strcpy(hdr, HDRSTR); |
| 413 |
strcat(hdr, "RADIANCE\n"); |
| 414 |
begData = strlen(hdr); |
| 415 |
strcpy(hdr+begData, rcp->GetHeadStr()); |
| 416 |
begData += rcp->GetHeadLen(); |
| 417 |
if (omod) { |
| 418 |
sprintf(hdr+begData, "MODIFIER=%s\n", omod); |
| 419 |
begData += strlen(hdr+begData); |
| 420 |
} |
| 421 |
if (obin >= 0) { |
| 422 |
sprintf(hdr+begData, "BIN=%d\n", obin); |
| 423 |
begData += strlen(hdr+begData); |
| 424 |
} |
| 425 |
strcpy(hdr+begData, ROWZEROSTR); |
| 426 |
rowCountPos = begData+LNROWSTR; |
| 427 |
begData += sizeof(ROWZEROSTR)-1; |
| 428 |
if (!rcp->xres | (rowBytes > esiz)) { |
| 429 |
sprintf(hdr+begData, "NCOLS=%d\n", int(rowBytes/esiz)); |
| 430 |
begData += strlen(hdr+begData); |
| 431 |
} |
| 432 |
sprintf(hdr+begData, "%s%d\n", NCOMPSTR, NCSAMP); |
| 433 |
begData += strlen(hdr+begData); |
| 434 |
if (NCSAMP > 3) { |
| 435 |
sprintf(hdr+begData, "%s %f %f %f %f\n", WLSPLTSTR, |
| 436 |
WLPART[0], WLPART[1], WLPART[2], WLPART[3]); |
| 437 |
begData += strlen(hdr+begData); |
| 438 |
} |
| 439 |
if (etyp != 'c') { |
| 440 |
sprintf(hdr+begData, "%s%d\n", BIGEND, nativebigendian()); |
| 441 |
begData += strlen(hdr+begData); |
| 442 |
} |
| 443 |
int align = 0; |
| 444 |
switch (etyp) { |
| 445 |
case 'f': |
| 446 |
align = sizeof(float); |
| 447 |
break; |
| 448 |
case 'd': |
| 449 |
align = sizeof(double); |
| 450 |
break; |
| 451 |
case 'c': |
| 452 |
break; |
| 453 |
default: |
| 454 |
error(INTERNAL, "unsupported data type in NewHeader()"); |
| 455 |
return false; |
| 456 |
} |
| 457 |
strcpy(hdr+begData, FMTSTR); // write format string |
| 458 |
begData += strlen(hdr+begData); |
| 459 |
strcpy(hdr+begData, formstr(etyp)); |
| 460 |
begData += strlen(hdr+begData); |
| 461 |
if (align) // align data at end of header |
| 462 |
while ((begData+2) % align) |
| 463 |
hdr[begData++] = ' '; |
| 464 |
hdr[begData++] = '\n'; // EOL for data format |
| 465 |
hdr[begData++] = '\n'; // end of nominal header |
| 466 |
if ((rcp->xres > 0) & (rowBytes == esiz)) { // tack on resolution string? |
| 467 |
sprintf(hdr+begData, PIXSTDFMT, rcp->yres, rcp->xres); |
| 468 |
begData += strlen(hdr+begData); |
| 469 |
} |
| 470 |
return rData->ReleaseMemory(hdr, RDSwrite); |
| 471 |
} |
| 472 |
|
| 473 |
// find string argument in header for named variable |
| 474 |
static const char * |
| 475 |
findArgs(const char *hdr, const char *vnm, int len) |
| 476 |
{ |
| 477 |
const char * npos = strnstr(hdr, vnm, len); |
| 478 |
|
| 479 |
if (!npos) return NULL; |
| 480 |
|
| 481 |
npos += strlen(vnm); // find start of (first) argument |
| 482 |
len -= npos - hdr; |
| 483 |
while (len-- > 0 && (*npos == '=') | isspace(*npos)) |
| 484 |
if (*npos++ == '\n') |
| 485 |
return NULL; |
| 486 |
|
| 487 |
return (len >= 0) ? npos : NULL; |
| 488 |
} |
| 489 |
|
| 490 |
// Load and check header in read/write channel |
| 491 |
int |
| 492 |
RcontribOutput::CheckHeader(const RcontribSimulManager *rcp) |
| 493 |
{ |
| 494 |
int esiz; |
| 495 |
const int etyp = rcp->GetFormat(&esiz); |
| 496 |
const int maxlen = rcp->GetHeadLen() + 1024; |
| 497 |
char * hdr = (char *)rData->GetMemory(0, maxlen, RDSread); |
| 498 |
const char * cp; |
| 499 |
// find end of header |
| 500 |
if (!hdr || !(cp = strnstr(hdr, "\n\n", maxlen))) { |
| 501 |
sprintf(errmsg, "cannot find end of header in '%s'", GetName()); |
| 502 |
error(USER, errmsg); |
| 503 |
return -1; |
| 504 |
} |
| 505 |
begData = cp - hdr + 1; // increment again at end |
| 506 |
// check # components |
| 507 |
if (((cp = findArgs(hdr, NCOMPSTR, begData)) ? atoi(cp) : 3) != NCSAMP) { |
| 508 |
sprintf(errmsg, "expected %s%d in '%s'", NCOMPSTR, NCSAMP, GetName()); |
| 509 |
error(USER, errmsg); |
| 510 |
return -1; |
| 511 |
} |
| 512 |
// check format |
| 513 |
if (!(cp = findArgs(hdr, FMTSTR, begData)) || |
| 514 |
strncmp(cp, formstr(etyp), strlen(formstr(etyp)))) { |
| 515 |
sprintf(errmsg, "expected %s%s in '%s'", FMTSTR, formstr(etyp), GetName()); |
| 516 |
error(USER, errmsg); |
| 517 |
return -1; |
| 518 |
} |
| 519 |
// check #columns |
| 520 |
if (((cp = findArgs(hdr, "NCOLS=", begData)) && atoi(cp)*esiz != rowBytes) || |
| 521 |
!rcp->xres | (rowBytes > esiz)) { |
| 522 |
sprintf(errmsg, "expected NCOLS=%d in '%s'", |
| 523 |
int(rowBytes/esiz), GetName()); |
| 524 |
error(USER, errmsg); |
| 525 |
return -1; |
| 526 |
} |
| 527 |
// find row count |
| 528 |
if (!(cp = findArgs(hdr, "NROWS=", begData))) { |
| 529 |
sprintf(errmsg, "missing NROWS in '%s'", GetName()); |
| 530 |
error(USER, errmsg); |
| 531 |
return -1; |
| 532 |
} |
| 533 |
rowCountPos = cp - hdr; |
| 534 |
int rlast = atoi(cp); |
| 535 |
begData++; // advance past closing EOL |
| 536 |
if ((rcp->xres > 0) & (rowBytes == esiz)) { // check/skip resolution string? |
| 537 |
char rbuf[64]; |
| 538 |
sprintf(rbuf, PIXSTDFMT, rcp->yres, rcp->xres); |
| 539 |
int rlen = strlen(rbuf); |
| 540 |
if (strncmp(rbuf, hdr+begData, rlen)) { |
| 541 |
sprintf(errmsg, "bad resolution string in '%s'", GetName()); |
| 542 |
error(USER, errmsg); |
| 543 |
return -1; |
| 544 |
} |
| 545 |
begData += rlen; |
| 546 |
} |
| 547 |
// XXX assume the rest is OK: endianness, wavelength splits, modifier, bin |
| 548 |
return rData->ReleaseMemory(hdr, 0) ? rlast : -1; |
| 549 |
} |
| 550 |
|
| 551 |
// Rewind calculation (previous results unchanged) |
| 552 |
bool |
| 553 |
RcontribSimulManager::ResetRow(int r) |
| 554 |
{ |
| 555 |
if (!rowsDone.Length() | (0 > r) | (r >= rInPos)) { |
| 556 |
error(WARNING, "ignoring bad call to ResetRow()"); |
| 557 |
return (r == rInPos); |
| 558 |
} |
| 559 |
FlushQueue(); // finish current and reset |
| 560 |
for (RcontribOutput *op = outList; op; op = op->next) |
| 561 |
if (!op->SetRowsDone(r)) |
| 562 |
return false; |
| 563 |
|
| 564 |
rowsDone.ClearBits(r, rInPos-r, false); |
| 565 |
rInPos = r; |
| 566 |
return true; |
| 567 |
} |
| 568 |
|
| 569 |
// call-back for averaging each modifier's contributions to assigned channel(s) |
| 570 |
static int |
| 571 |
putModContrib(const LUENT *lp, void *p) |
| 572 |
{ |
| 573 |
RcontribMod * mp = (RcontribMod *)lp->data; |
| 574 |
const RcontribSimulManager * rcp = (const RcontribSimulManager *)p; |
| 575 |
const double sca = 1./rcp->accum; |
| 576 |
const DCOLORV * dvp = mp->cbin; |
| 577 |
RcontribOutput * op = mp->opl; |
| 578 |
int i, n; |
| 579 |
|
| 580 |
switch (rcp->GetFormat()) { // conversion based on output type |
| 581 |
case 'd': { |
| 582 |
double * dvo = (double *)op->InsertionP(mp->coffset); |
| 583 |
for (n = mp->nbins; n--; ) { |
| 584 |
for (i = 0; i < NCSAMP; i++) |
| 585 |
*dvo++ = *dvp++ * sca; |
| 586 |
if ((op->obin >= 0) & (n > 0)) |
| 587 |
dvo = (double *)(op = op->Next())->InsertionP(mp->coffset); |
| 588 |
} |
| 589 |
} break; |
| 590 |
case 'f': { |
| 591 |
float * fvo = (float *)op->InsertionP(mp->coffset); |
| 592 |
for (n = mp->nbins; n--; ) { |
| 593 |
for (i = 0; i < NCSAMP; i++) |
| 594 |
*fvo++ = float(*dvp++ * sca); |
| 595 |
if ((op->obin >= 0) & (n > 0)) |
| 596 |
fvo = (float *)(op = op->Next())->InsertionP(mp->coffset); |
| 597 |
} |
| 598 |
} break; |
| 599 |
case 'c': { |
| 600 |
COLRV * cvo = (COLRV *)op->InsertionP(mp->coffset); |
| 601 |
for (n = mp->nbins; n--; ) { |
| 602 |
SCOLOR scol; |
| 603 |
for (i = 0; i < NCSAMP; i++) |
| 604 |
scol[i] = COLORV(*dvp++ * sca); |
| 605 |
scolor_scolr(cvo, scol); |
| 606 |
cvo += LSCOLR; |
| 607 |
if ((op->obin >= 0) & (n > 0)) |
| 608 |
cvo = (COLRV *)(op = op->Next())->InsertionP(mp->coffset); |
| 609 |
} |
| 610 |
} break; |
| 611 |
default: |
| 612 |
error(CONSISTENCY, "unsupported output type in putModContrib()"); |
| 613 |
return -1; |
| 614 |
} |
| 615 |
// clear for next tally |
| 616 |
memset(mp->cbin, 0, sizeof(DCOLORV)*NCSAMP*mp->nbins); |
| 617 |
return 1; |
| 618 |
} |
| 619 |
|
| 620 |
// Add a ray/bundle to compute next record |
| 621 |
int |
| 622 |
RcontribSimulManager::ComputeRecord(const FVECT orig_direc[]) |
| 623 |
{ |
| 624 |
if (!Ready()) |
| 625 |
return 0; |
| 626 |
if (rInPos >= outList->nRows) { |
| 627 |
error(WARNING, "ComputeRecord() called after last record"); |
| 628 |
return 0; |
| 629 |
} |
| 630 |
if (nkids > 0) { // in parent process? |
| 631 |
int k = GetChild(false); // updates output rows |
| 632 |
if (k < 0) return -1; // someone died? |
| 633 |
RowAssignment rass; |
| 634 |
rass.row = kidRow[k] = rInPos++; |
| 635 |
rass.ac = accum; |
| 636 |
if (write(kid[k].w, &rass, sizeof(rass)) != sizeof(rass) || |
| 637 |
writebuf(kid[k].w, orig_direc, sizeof(FVECT)*2*accum) |
| 638 |
!= sizeof(FVECT)*2*accum) { |
| 639 |
error(SYSTEM, "cannot write to child; dead process?"); |
| 640 |
return -1; |
| 641 |
} |
| 642 |
return accum; // tracing/output happens in child |
| 643 |
} |
| 644 |
if (NCSAMP != nChan) { |
| 645 |
error(INTERNAL, "number of color channels must remain fixed"); |
| 646 |
return -1; |
| 647 |
} |
| 648 |
// actual work is done here... |
| 649 |
if (EnqueueBundle(orig_direc, accum) < 0) |
| 650 |
return -1; |
| 651 |
|
| 652 |
RcontribOutput * op; // prepare output buffers |
| 653 |
for (op = outList; op; op = op->next) |
| 654 |
if (!op->GetRow(rInPos)) |
| 655 |
return -1; |
| 656 |
// convert averages & clear |
| 657 |
if (lu_doall(&modLUT, putModContrib, this) < 0) |
| 658 |
return -1; |
| 659 |
// write buffers |
| 660 |
for (op = outList; op; op = op->next) |
| 661 |
op->DoneRow(); |
| 662 |
|
| 663 |
if (!nkids) // update row if solo process |
| 664 |
UpdateRowsDone(rInPos++); // XXX increment here is critical |
| 665 |
|
| 666 |
return accum; |
| 667 |
} |
| 668 |
|
| 669 |
// Get next available child, returning index or -1 if forceWait & idling |
| 670 |
int |
| 671 |
RcontribSimulManager::GetChild(bool forceWait) |
| 672 |
{ |
| 673 |
if (nkids <= 0) |
| 674 |
return -1; |
| 675 |
// take inventory |
| 676 |
int pn, n = 0; |
| 677 |
fd_set readset, errset; |
| 678 |
FD_ZERO(&readset); FD_ZERO(&errset); |
| 679 |
for (pn = nkids; pn--; ) { |
| 680 |
if (kidRow[pn] < 0) { // child already ready? |
| 681 |
if (forceWait) continue; |
| 682 |
return pn; // good enough |
| 683 |
} |
| 684 |
FD_SET(kid[pn].r, &readset); // will check on this one |
| 685 |
FD_SET(kid[pn].r, &errset); |
| 686 |
if (kid[pn].r >= n) |
| 687 |
n = kid[pn].r + 1; |
| 688 |
} |
| 689 |
if (!n) // every child is idle? |
| 690 |
return -1; |
| 691 |
// wait on "busy" child(ren) |
| 692 |
while ((n = select(n, &readset, NULL, &errset, NULL)) <= 0) |
| 693 |
if (errno != EINTR) { |
| 694 |
error(SYSTEM, "select call failed in GetChild()"); |
| 695 |
return -1; |
| 696 |
} |
| 697 |
char buf[sizeof(ROW_DONE)] = "X"; |
| 698 |
pn = -1; // get flags set by select |
| 699 |
for (n = nkids; n--; ) |
| 700 |
if (kidRow[n] >= 0 && |
| 701 |
FD_ISSET(kid[n].r, &readset) | |
| 702 |
FD_ISSET(kid[n].r, &errset)) { |
| 703 |
// check for error |
| 704 |
if (FD_ISSET(kid[n].r, &errset) || |
| 705 |
read(kid[n].r, buf, sizeof(ROW_DONE)) <= 0 || |
| 706 |
memcmp(buf, ROW_DONE, sizeof(ROW_DONE))) |
| 707 |
return -1; |
| 708 |
// update output row counts |
| 709 |
UpdateRowsDone(kidRow[n]); |
| 710 |
kidRow[n] = -1; // flag child available |
| 711 |
pn = n; |
| 712 |
} |
| 713 |
return pn; |
| 714 |
} |
| 715 |
|
| 716 |
// Update row completion bitmap and update outputs (does not change rInPos) |
| 717 |
bool |
| 718 |
RcontribSimulManager::UpdateRowsDone(int r) |
| 719 |
{ |
| 720 |
if (!rowsDone.TestAndSet(r)) { |
| 721 |
error(WARNING, "redundant call to UpdateRowsDone()"); |
| 722 |
return false; |
| 723 |
} |
| 724 |
int nDone = GetRowFinished(); |
| 725 |
if (nDone <= r) |
| 726 |
return true; // nothing to update, yet |
| 727 |
for (RcontribOutput *op = outList; op; op = op->next) |
| 728 |
if (!op->SetRowsDone(nDone)) |
| 729 |
return false; |
| 730 |
return true; // up-to-date |
| 731 |
} |
| 732 |
|
| 733 |
// Run rcontrib child process (never returns) |
| 734 |
void |
| 735 |
RcontribSimulManager::RunChild() |
| 736 |
{ |
| 737 |
FVECT * vecList = NULL; |
| 738 |
RowAssignment rass; |
| 739 |
ssize_t nr; |
| 740 |
|
| 741 |
accum = 0; |
| 742 |
errno = 0; |
| 743 |
while ((nr = read(0, &rass, sizeof(rass))) == sizeof(rass)) { |
| 744 |
if (!rass.ac) { |
| 745 |
error(CONSISTENCY, "bad accumulator count in child"); |
| 746 |
exit(1); |
| 747 |
} |
| 748 |
if (rass.ac > accum) { |
| 749 |
efree(vecList); |
| 750 |
vecList = (FVECT *)emalloc(sizeof(FVECT)*2*rass.ac); |
| 751 |
} |
| 752 |
accum = rass.ac; |
| 753 |
rInPos = rass.row; |
| 754 |
|
| 755 |
if (readbuf(0, vecList, sizeof(FVECT)*2*accum) != |
| 756 |
sizeof(FVECT)*2*accum) |
| 757 |
break; |
| 758 |
|
| 759 |
if (ComputeRecord(vecList) <= 0) |
| 760 |
exit(1); |
| 761 |
// signal this row is done |
| 762 |
if (write(1, ROW_DONE, sizeof(ROW_DONE)) != sizeof(ROW_DONE)) |
| 763 |
exit(1); |
| 764 |
} |
| 765 |
if (nr) { |
| 766 |
error(SYSTEM, "read error in child process"); |
| 767 |
exit(1); |
| 768 |
} |
| 769 |
exit(0); |
| 770 |
} |
| 771 |
|
| 772 |
// Add child processes as indicated |
| 773 |
bool |
| 774 |
RcontribSimulManager::StartKids(int n2go) |
| 775 |
{ |
| 776 |
if ((n2go <= 0) | (nkids + n2go <= 1)) |
| 777 |
return false; |
| 778 |
|
| 779 |
if (!nkids) |
| 780 |
cow_memshare(); // preload objects |
| 781 |
|
| 782 |
n2go += nkids; // => desired brood size |
| 783 |
kid = (SUBPROC *)erealloc(kid, sizeof(SUBPROC)*n2go); |
| 784 |
kidRow = (int32 *)erealloc(kidRow, sizeof(int32)*n2go); |
| 785 |
|
| 786 |
fflush(stdout); // shouldn't use, anyway |
| 787 |
while (nkids < n2go) { |
| 788 |
kid[nkids] = sp_inactive; |
| 789 |
int rv = open_process(&kid[nkids], NULL); |
| 790 |
if (!rv) { // in child process? |
| 791 |
while (nkids-- > 0) { |
| 792 |
close(kid[nkids].r); |
| 793 |
close(kid[nkids].w); |
| 794 |
} |
| 795 |
free(kid); free(kidRow); |
| 796 |
kid = NULL; kidRow = NULL; |
| 797 |
RunChild(); // should never return |
| 798 |
_exit(1); |
| 799 |
} |
| 800 |
if (rv < 0) { |
| 801 |
error(SYSTEM, "cannot fork worker process"); |
| 802 |
return false; |
| 803 |
} |
| 804 |
kidRow[nkids++] = -1; // newborn is ready |
| 805 |
} |
| 806 |
return true; |
| 807 |
} |
| 808 |
|
| 809 |
// Reap the indicated number of children (all if 0) |
| 810 |
int |
| 811 |
RcontribSimulManager::StopKids(int n2end) |
| 812 |
{ |
| 813 |
if (nkids <= 0) |
| 814 |
return 0; |
| 815 |
FlushQueue(); |
| 816 |
int status = 0; |
| 817 |
if (!n2end | (n2end >= nkids)) { // end all subprocesses? |
| 818 |
status = close_processes(kid, nkids); |
| 819 |
free(kid); free(kidRow); |
| 820 |
kid = NULL; kidRow = NULL; |
| 821 |
nkids = 0; |
| 822 |
} else { // else shrink family |
| 823 |
int st; |
| 824 |
while (n2end-- > 0) |
| 825 |
if ((st = close_process(&kid[--nkids])) > 0) |
| 826 |
status = st; |
| 827 |
// could call realloc(), but it hardly matters |
| 828 |
} |
| 829 |
if (status) { |
| 830 |
sprintf(errmsg, "non-zero (%d) status from child", status); |
| 831 |
error(WARNING, errmsg); |
| 832 |
} |
| 833 |
return status; |
| 834 |
} |
| 835 |
|
| 836 |
// Set number of computation threads (0 => #cores) |
| 837 |
int |
| 838 |
RcontribSimulManager::SetThreadCount(int nt) |
| 839 |
{ |
| 840 |
if (!Ready()) { |
| 841 |
error(INTERNAL, "must call PrepOutput() before SetThreadCount()"); |
| 842 |
return 0; |
| 843 |
} |
| 844 |
if (nt < 0) |
| 845 |
return NThreads(); |
| 846 |
if (!nt) nt = GetNCores(); |
| 847 |
int status = 0; |
| 848 |
if (nt == 1) |
| 849 |
status = StopKids(); |
| 850 |
else if (nt < nkids) |
| 851 |
status = StopKids(nkids-nt); |
| 852 |
else if (nt > nkids) |
| 853 |
StartKids(nt-nkids); |
| 854 |
if (status) { |
| 855 |
sprintf(errmsg, "non-zero (%d) status from child", status); |
| 856 |
error(WARNING, errmsg); |
| 857 |
} |
| 858 |
return NThreads(); |
| 859 |
} |
