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pmapdiag.c
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Sun, May 11, 20:12

pmapdiag.c
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#ifndef lint
static const char RCSid[] = "$Id: pmapdiag.c,v 2.7 2016/05/17 17:39:47 rschregle Exp $";
#endif
/*
==================================================================
Photon map diagnostic output and progress reports
Roland Schregle (roland.schregle@{hslu.ch, gmail.com})
(c) Fraunhofer Institute for Solar Energy Systems,
(c) Lucerne University of Applied Sciences and Arts,
supported by the Swiss National Science Foundation (SNSF, #147053)
==================================================================
$Id: pmapdiag.c,v 2.7 2016/05/17 17:39:47 rschregle Exp $
*/
#include "pmapdiag.h"
#include "pmapdata.h"
#include "standard.h"
time_t repStartTime, repLastTime = 0; /* Time at start & last report */
unsigned long repProgress, /* Report progress counter */
repComplete, /* Report completion count */
repEmitted; /* Num emitted photons */
static char* biasCompStats (const PhotonMap *pmap, PhotonMapType type,
char *stats)
/* Dump bias compensation statistics */
{
unsigned avgBwidth;
float avgErr;
stats [0] = '\0';
/* Check if photon map is valid and bias compensated */
if (pmap && pmap -> maxGather > pmap -> minGather) {
avgBwidth = pmap -> numDensity
? pmap -> totalGathered / pmap -> numDensity : 0,
avgErr = pmap -> numDensity
? sqrt(pmap -> rmsError / pmap -> numDensity) : 0;
sprintf(stats, "%d/%d/%d %s photon bwidth (%.1f/%.1f/%.1f%% error), ",
pmap -> minGathered, pmap -> maxGathered, avgBwidth,
pmapName [type],
100 * pmap -> minError, 100 * pmap -> maxError, 100 * avgErr);
return stats;
}
return NULL;
}
void pmapBiasCompReport (char *stats)
/* Append full bias compensation statistics to stats; interface to rpict's
* report() */
{
char tmp [512];
unsigned t;
stats [0] = '\0';
for (t = 0; t < NUM_PMAP_TYPES; t++)
if (biasCompStats(photonMaps [t], t, tmp))
strcat(stats, tmp);
}
#ifdef PMAP_OOC
static char* oocCacheStats (const PhotonMap *pmap, PhotonMapType type,
char *stats)
/* Dump OOC I/O cache statistics */
{
const OOC_Cache *cache;
stats [0] = '\0';
/* Check for photon map is valid and caching enabled */
if (pmap && (cache = pmap -> store.cache) && cache -> numReads) {
sprintf(stats, "%ld %s photons cached in %d/%d pages "
"(%.1f%% hit, %.1f%% rept, %.1f coll), ",
(unsigned long)cache -> pageCnt * cache -> recPerPage,
pmapName [type], cache -> pageCnt, cache -> numPages,
100.0 * cache -> numHits / cache -> numReads,
100.0 * cache -> numRept / cache -> numReads,
(float)cache -> numColl / cache -> numReads);
return stats;
}
return NULL;
}
void pmapOOCCacheReport (char *stats)
/* Append full OOC I/O cache statistics to stats; interface to rpict's
* report() */
{
char tmp [512];
unsigned t;
stats [0] = '\0';
for (t = 0; t < NUM_PMAP_TYPES; t++)
if (oocCacheStats(photonMaps [t], t, tmp))
strcat(stats, tmp);
}
#endif
#ifndef NON_POSIX
void pmapPreCompReport()
/* Report global photon precomputation progress */
{
extern char *myhostname();
float u, s;
char tmp [512];
#ifdef BSD
struct rusage rubuf;
#else
struct tms tbuf;
float period;
#endif
repLastTime = time(NULL);
#ifdef BSD
getrusage(RUSAGE_SELF, &rubuf);
u = rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec / 1e6;
s = rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec / 1e6;
getrusage(RUSAGE_CHILDREN, &rubuf);
u += rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec / 1e6;
s += rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec / 1e6;
#else
times(&tbuf);
#ifdef _SC_CLK_TCK
period = 1.0 / sysconf(_SC_CLK_TCK);
#else
period = 1.0 / 60;
#endif
u = (tbuf.tms_utime + tbuf.tms_cutime) * period;
s = (tbuf.tms_stime + tbuf.tms_cstime) * period;
#endif
sprintf(errmsg, "%lu precomputed, ", repProgress);
/* Append bias compensation stats */
biasCompStats(preCompPmap, PMAP_TYPE_PRECOMP, tmp);
strcat(errmsg, tmp);
sprintf(tmp, "%4.2f%% after %.3fu %.3fs %.3fr hours on %s\n",
100.0 * repProgress / repComplete, u / 3600, s / 3600,
(repLastTime - repStartTime) / 3600.0, myhostname());
strcat(errmsg, tmp);
eputs(errmsg);
fflush(stderr);
#ifdef SIGCONT
signal(SIGCONT, pmapPreCompReport);
#endif
}
void pmapDistribReport()
/* Report photon distribution progress */
{
extern char *myhostname();
float u, s;
unsigned t;
char tmp [512];
#ifdef BSD
struct rusage rubuf;
#else
struct tms tbuf;
float period;
#endif
repLastTime = time(NULL);
#ifdef BSD
getrusage(RUSAGE_SELF, &rubuf);
u = rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec / 1e6;
s = rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec / 1e6;
getrusage(RUSAGE_CHILDREN, &rubuf);
u += rubuf.ru_utime.tv_sec + rubuf.ru_utime.tv_usec / 1e6;
s += rubuf.ru_stime.tv_sec + rubuf.ru_stime.tv_usec / 1e6;
#else
times(&tbuf);
#ifdef _SC_CLK_TCK
period = 1.0 / sysconf(_SC_CLK_TCK);
#else
period = 1.0 / 60;
#endif
u = (tbuf.tms_utime + tbuf.tms_cutime) * period;
s = (tbuf.tms_stime + tbuf.tms_cstime) * period;
#endif
sprintf(errmsg, "%lu emitted, ", repEmitted);
for (t = 0; t < NUM_PMAP_TYPES; t++)
if (photonMaps [t]) {
sprintf(tmp, "%lu %s, ", photonMaps [t] -> numPhotons,
pmapName [t]);
strcat(errmsg, tmp);
}
sprintf(tmp, "%4.2f%% after %.3fu %.3fs %.3fr hours on %s\n",
100.0 * repProgress / repComplete, u / 3600, s / 3600,
(repLastTime - repStartTime) / 3600.0, myhostname());
strcat(errmsg, tmp);
eputs(errmsg);
fflush(stderr);
#ifndef SIGCONT
signal(SIGCONT, pmapDistribReport);
#endif
}
#else /* POSIX */
void pmapPreCompReport()
/* Report global photon precomputation progress */
{
char tmp [512];
repLastTime = time(NULL);
sprintf(errmsg, "%lu precomputed, ", repProgress);
/* Append bias compensation stats */
biasCompStats(preCompPmap, PMAP_TYPE_PRECOMP, tmp);
strcat(errmsg, tmp);
sprintf(tmp, "%4.2f%% after %5.4f hours\n",
100.0 * repProgress / repComplete,
(repLastTime - repStartTime) / 3600.0);
strcat(errmsg, tmp);
eputs(errmsg);
fflush(stderr);
}
void pmapDistribReport()
/* Report photon distribution progress */
{
char tmp [512];
unsigned t;
repLastTime = time(NULL);
sprintf(errmsg, "%lu emitted, ", repEmitted);
for (t = 0; t < NUM_PMAP_TYPES; t++)
if (photonMaps [t]) {
sprintf(tmp, "%lu %s, ", photonMaps [t] -> numPhotons,
pmapName [t]);
strcat(errmsg, tmp);
}
sprintf(tmp, "%4.2f%% after %5.4f hours\n",
100.0 * repProgress / repComplete,
(repLastTime - repStartTime) / 3600.0);
strcat(errmsg, tmp);
eputs(errmsg);
fflush(stderr);
}
#endif

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