src/rt/rtmain.c

#ifndef lint
static const char       RCSid[] = "$Id: rtmain.c,v 2.36 2022/04/06 15:28:18 greg Exp $";
#endif
/*
 *  rtmain.c - main for rtrace per-ray calculation program
 */

#include "copyright.h"

#include  <signal.h>

#include  "platform.h"
#include  "rtprocess.h" /* getpid() */
#include  "resolu.h"
#include  "ray.h"
#include  "source.h"
#include  "ambient.h"
#include  "random.h"
#include  "paths.h"
#include  "pmapray.h"

extern char     *progname;              /* global argv[0] */

extern char     *shm_boundary;          /* boundary of shared memory */

                                        /* persistent processes define */
#ifdef  F_SETLKW
#define  PERSIST        1               /* normal persist */
#define  PARALLEL       2               /* parallel persist */
#define  PCHILD         3               /* child of normal persist */
#endif

char  *sigerr[NSIG];                    /* signal error messages */
char  *errfile = NULL;                  /* error output file */

int  nproc = 1;                         /* number of processes */

extern char  *formstr(int f);           /* string from format */
extern int  setrtoutput(void);          /* set output values */

int  inform = 'a';                      /* input format */
int  outform = 'a';                     /* output format */
char  *outvals = "v";                   /* output specification */

int  hresolu = 0;                       /* horizontal (scan) size */
int  vresolu = 0;                       /* vertical resolution */

extern int  castonly;                   /* only doing ray-casting? */

int  imm_irrad = 0;                     /* compute immediate irradiance? */
int  lim_dist = 0;                      /* limit distance? */

#ifndef MAXMODLIST
#define MAXMODLIST      1024            /* maximum modifiers we'll track */
#endif

extern void  (*addobjnotify[])();       /* object notification calls */
extern void  tranotify(OBJECT obj);

char  *tralist[MAXMODLIST];             /* list of modifers to trace (or no) */
int  traincl = -1;                      /* include == 1, exclude == 0 */

static int  loadflags = ~IO_FILES;      /* what to load from octree */

static void onsig(int  signo);
static void sigdie(int  signo, char  *msg);
static void printdefaults(void);


int
main(int  argc, char  *argv[])
{
#define  check(ol,al)           if (argv[i][ol] || \
                                badarg(argc-i-1,argv+i+1,al)) \
                                goto badopt
#define  check_bool(olen,var)           switch (argv[i][olen]) { \
                                case '\0': var = !var; break; \
                                case 'y': case 'Y': case 't': case 'T': \
                                case '+': case '1': var = 1; break; \
                                case 'n': case 'N': case 'f': case 'F': \
                                case '-': case '0': var = 0; break; \
                                default: goto badopt; }
        extern char  *octname;
        int  persist = 0;
        char  *octnm = NULL;
        char  **tralp = NULL;
        int  duped1 = -1;
        int  rval;
        int  i;
                                        /* global program name */
        progname = argv[0] = fixargv0(argv[0]);
                                        /* add trace notify function */
        for (i = 0; addobjnotify[i] != NULL; i++)
                ;
        addobjnotify[i] = tranotify;
                                        /* option city */
        for (i = 1; i < argc; i++) {
                                                /* expand arguments */
                while ((rval = expandarg(&argc, &argv, i)) > 0)
                        ;
                if (rval < 0) {
                        sprintf(errmsg, "cannot expand '%s'", argv[i]);
                        error(SYSTEM, errmsg);
                }
                if (argv[i] == NULL || argv[i][0] != '-')
                        break;                  /* break from options */
                if (!strcmp(argv[i], "-version")) {
                        puts(VersionID);
                        quit(0);
                }
                if (!strcmp(argv[i], "-defaults") ||
                                !strcmp(argv[i], "-help")) {
                        printdefaults();
                        quit(0);
                }
                rval = getrenderopt(argc-i, argv+i);
                if (rval >= 0) {
                        i += rval;
                        continue;
                }
                switch (argv[i][1]) {
                case 'n':                               /* number of cores */
                        check(2,"i");
                        nproc = atoi(argv[++i]);
                        if (nproc <= 0)
                                error(USER, "bad number of processes");
                        break;
                case 'x':                               /* x resolution */
                        check(2,"i");
                        hresolu = atoi(argv[++i]);
                        break;
                case 'y':                               /* y resolution */
                        check(2,"i");
                        vresolu = atoi(argv[++i]);
                        break;
                case 'w':                               /* warnings */
                        rval = erract[WARNING].pf != NULL;
                        check_bool(2,rval);
                        if (rval) erract[WARNING].pf = wputs;
                        else erract[WARNING].pf = NULL;
                        break;
                case 'e':                               /* error file */
                        check(2,"s");
                        errfile = argv[++i];
                        break;
                case 'l':                               /* limit distance */
                        if (argv[i][2] != 'd')
                                goto badopt;
                        check_bool(3,lim_dist);
                        break;
                case 'I':                               /* immed. irradiance */
                        check_bool(2,imm_irrad);
                        break;
                case 'f':                               /* format i/o */
                        switch (argv[i][2]) {
                        case 'a':                               /* ascii */
                        case 'f':                               /* float */
                        case 'd':                               /* double */
                                inform = argv[i][2];
                                break;
                        default:
                                goto badopt;
                        }
                        switch (argv[i][3]) {
                        case '\0':
                                outform = inform;
                                break;
                        case 'a':                               /* ascii */
                        case 'f':                               /* float */
                        case 'd':                               /* double */
                        case 'c':                               /* color */
                                check(4,"");
                                outform = argv[i][3];
                                break;
                        default:
                                goto badopt;
                        }
                        break;
                case 'o':                               /* output */
                        outvals = argv[i]+2;
                        break;
                case 'h':                               /* header output */
                        rval = loadflags & IO_INFO;
                        check_bool(2,rval);
                        loadflags = rval ? loadflags | IO_INFO :
                                        loadflags & ~IO_INFO;
                        break;
                case 't':                               /* trace */
                        switch (argv[i][2]) {
                        case 'i':                               /* include */
                        case 'I':
                                check(3,"s");
                                if (traincl != 1) {
                                        traincl = 1;
                                        tralp = tralist;
                                }
                                if (argv[i][2] == 'I') {        /* file */
                                        rval = wordfile(tralp, MAXMODLIST-(tralp-tralist),
                                        getpath(argv[++i],getrlibpath(),R_OK));
                                        if (rval < 0) {
                                                sprintf(errmsg,
                                "cannot open trace include file \"%s\"",
                                                                argv[i]);
                                                error(SYSTEM, errmsg);
                                        }
                                        tralp += rval;
                                } else {
                                        *tralp++ = argv[++i];
                                        *tralp = NULL;
                                }
                                break;
                        case 'e':                               /* exclude */
                        case 'E':
                                check(3,"s");
                                if (traincl != 0) {
                                        traincl = 0;
                                        tralp = tralist;
                                }
                                if (argv[i][2] == 'E') {        /* file */
                                        rval = wordfile(tralp, MAXMODLIST-(tralp-tralist),
                                        getpath(argv[++i],getrlibpath(),R_OK));
                                        if (rval < 0) {
                                                sprintf(errmsg,
                                "cannot open trace exclude file \"%s\"",
                                                                argv[i]);
                                                error(SYSTEM, errmsg);
                                        }
                                        tralp += rval;
                                } else {
                                        *tralp++ = argv[++i];
                                        *tralp = NULL;
                                }
                                break;
                        default:
                                goto badopt;
                        }
                        break;
#ifdef  PERSIST
                case 'P':                               /* persist file */
                        if (argv[i][2] == 'P') {
                                check(3,"s");
                                persist = PARALLEL;
                        } else {
                                check(2,"s");
                                persist = PERSIST;
                        }
                        persistfile(argv[++i]);
                        break;
#endif
                default:
                        goto badopt;
                }
        }
        if (nproc > 1 && persist)
                error(USER, "multiprocessing incompatible with persist file");
                                        /* initialize object types */
        initotypes();
                                        /* initialize urand */
        if (rand_samp) {
                srandom((long)time(0));
                initurand(0);
        } else {
                srandom(0L);
                initurand(2048);
        }
                                        /* set up signal handling */
        sigdie(SIGINT, "Interrupt");
#ifdef SIGHUP
        sigdie(SIGHUP, "Hangup");
#endif
        sigdie(SIGTERM, "Terminate");
#ifdef SIGPIPE
        sigdie(SIGPIPE, "Broken pipe");
#endif
#ifdef SIGALRM
        sigdie(SIGALRM, "Alarm clock");
#endif
#ifdef  SIGXCPU
        sigdie(SIGXCPU, "CPU limit exceeded");
        sigdie(SIGXFSZ, "File size exceeded");
#endif
                                        /* open error file */
        if (errfile != NULL) {
                if (freopen(errfile, "a", stderr) == NULL)
                        quit(2);
                fprintf(stderr, "**************\n*** PID %5d: ",
                                getpid());
                printargs(argc, argv, stderr);
                putc('\n', stderr);
                fflush(stderr);
        }
#ifdef  NICE
        nice(NICE);                     /* lower priority */
#endif
                                        /* get octree */
        if (i == argc)
                octnm = NULL;
        else if (i == argc-1)
                octnm = argv[i];
        else
                goto badopt;
        if (octnm == NULL)
                error(USER, "missing octree argument");
                                        /* set up output */
#ifdef  PERSIST
        if (persist) {
                duped1 = dup(fileno(stdout));   /* don't lose our output */
                openheader();
        }
#endif
        if (outform != 'a')
                SET_FILE_BINARY(stdout);
        rval = setrtoutput();
        readoct(octname = octnm, loadflags, &thescene, NULL);
        nsceneobjs = nobjects;

        if (loadflags & IO_INFO) {      /* print header */
                printargs(i, argv, stdout);
                printf("SOFTWARE= %s\n", VersionID);
                fputnow(stdout);
                if (rval > 0)           /* saved from setrtoutput() call */
                        printf("NCOMP=%d\n", rval);
                if ((outform == 'f') | (outform == 'd'))
                        fputendian(stdout);
                fputformat(formstr(outform), stdout);
                putchar('\n');
        }

        if (!castonly) {        /* any actual ray traversal to do? */

                ray_init_pmap();        /* PMAP: set up & load photon maps */
                
                marksources();          /* find and mark sources */

                setambient();           /* initialize ambient calculation */
        } else
                distantsources();       /* else mark only distant sources */

        fflush(stdout);                 /* in case we're duplicating header */

#ifdef  PERSIST
        if (persist) {
                                                /* reconnect stdout */
                dup2(duped1, fileno(stdout));
                close(duped1);
                if (persist == PARALLEL) {      /* multiprocessing */
                        preload_objs();         /* preload scene */
                        shm_boundary = (char *)malloc(16);
                        strcpy(shm_boundary, "SHM_BOUNDARY");
                        while ((rval=fork()) == 0) {    /* keep on forkin' */
                                pflock(1);
                                pfhold();
                                ambsync();              /* load new values */
                        }
                        if (rval < 0)
                                error(SYSTEM, "cannot fork child for persist function");
                        pfdetach();             /* parent will run then exit */
                }
        }
runagain:
        if (persist)
                dupheader();                    /* send header to stdout */
#endif
                                        /* trace rays */
        rtrace(NULL, nproc);
                                        /* flush ambient file */
        ambsync();
#ifdef  PERSIST
        if (persist == PERSIST) {       /* first run-through */
                if ((rval=fork()) == 0) {       /* child loops until killed */
                        pflock(1);
                        persist = PCHILD;
                } else {                        /* original process exits */
                        if (rval < 0)
                                error(SYSTEM, "cannot fork child for persist function");
                        pfdetach();             /* parent exits */
                }
        }
        if (persist == PCHILD) {        /* wait for a signal then go again */
                pfhold();
                raynum = nrays = 0;             /* reinitialize */
                goto runagain;
        }
#endif

        ray_done_pmap();           /* PMAP: free photon maps */
        
        quit(0);

badopt:
        sprintf(errmsg, "command line error at '%s'", argv[i]);
        error(USER, errmsg);
        return 1; /* pro forma return */

#undef  check
#undef  check_bool
}


void
wputs(                          /* warning output function */
        char    *s
)
{
        int  lasterrno = errno;
        eputs(s);
        errno = lasterrno;
}


void
eputs(                          /* put string to stderr */
        register char  *s
)
{
        static int  midline = 0;

        if (!*s)
                return;
        if (!midline++) {
                fputs(progname, stderr);
                fputs(": ", stderr);
        }
        fputs(s, stderr);
        if (s[strlen(s)-1] == '\n') {
                fflush(stderr);
                midline = 0;
        }
}


static void
onsig(                          /* fatal signal */
        int  signo
)
{
        static int  gotsig = 0;

        if (gotsig++)                   /* two signals and we're gone! */
                _exit(signo);

#ifdef SIGALRM
        alarm(15);                      /* allow 15 seconds to clean up */
        signal(SIGALRM, SIG_DFL);       /* make certain we do die */
#endif
        eputs("signal - ");
        eputs(sigerr[signo]);
        eputs("\n");
        quit(3);
}


static void
sigdie(                 /* set fatal signal */
        int  signo,
        char  *msg
)
{
        if (signal(signo, onsig) == SIG_IGN)
                signal(signo, SIG_IGN);
        sigerr[signo] = msg;
}


static void
printdefaults(void)                     /* print default values to stdout */
{
        register char  *cp;

        if (imm_irrad)
                printf("-I+\t\t\t\t# immediate irradiance on\n");
        printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc);
        printf("-x %-9d\t\t\t# %s\n", hresolu,
                        vresolu && hresolu ? "x resolution" : "flush interval");
        printf("-y %-9d\t\t\t# y resolution\n", vresolu);
        printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" :
                        "-ld-\t\t\t\t# limit distance off\n");
        printf("-h%c\t\t\t\t# %s header\n", loadflags & IO_INFO ? '+' : '-',
                        loadflags & IO_INFO ? "output" : "no");
        printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
                        inform, outform, formstr(inform), formstr(outform));
        printf("-o%-9s\t\t\t# output", outvals);
        for (cp = outvals; *cp; cp++)
                switch (*cp) {
                case 't': case 'T': printf(" trace"); break;
                case 'o': printf(" origin"); break;
                case 'd': printf(" direction"); break;
                case 'r': printf(" reflect_contrib"); break;
                case 'R': printf(" reflect_length"); break;
                case 'x': printf(" unreflect_contrib"); break;
                case 'X': printf(" unreflect_length"); break;
                case 'v': printf(" value"); break;
                case 'V': printf(" contribution"); break;
                case 'l': printf(" length"); break;
                case 'L': printf(" first_length"); break;
                case 'p': printf(" point"); break;
                case 'n': printf(" normal"); break;
                case 'N': printf(" unperturbed_normal"); break;
                case 's': printf(" surface"); break;
                case 'w': printf(" weight"); break;
                case 'W': printf(" coefficient"); break;
                case 'm': printf(" modifier"); break;
                case 'M': printf(" material"); break;
                case '~': printf(" tilde"); break;
                }
        putchar('\n');
        printf(erract[WARNING].pf != NULL ?
                        "-w+\t\t\t\t# warning messages on\n" :
                        "-w-\t\t\t\t# warning messages off\n");
        print_rdefaults();
}
Revision:	2.37
Committed:	Tue Oct 18 18:07:50 2022 UTC (18 months, 3 weeks ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.36:	+2 -2 lines
Log Message:	fix(rtrace): corrected defaults reporting with tilde
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	greg	2.37	static const char RCSid[] = "$Id: rtmain.c,v 2.36 2022/04/06 15:28:18 greg Exp $";
3	greg	2.1	#endif
4			/*
5			* rtmain.c - main for rtrace per-ray calculation program
6			*/
7
8	greg	2.2	#include "copyright.h"
9	greg	2.1
10	schorsch	2.4	#include <signal.h>
11
12			#include "platform.h"
13	schorsch	2.7	#include "rtprocess.h" /* getpid() */
14	schorsch	2.9	#include "resolu.h"
15	greg	2.1	#include "ray.h"
16			#include "source.h"
17			#include "ambient.h"
18			#include "random.h"
19			#include "paths.h"
20	greg	2.23	#include "pmapray.h"
21	greg	2.1
22	greg	2.18	extern char progname; / global argv[0] */
23
24			extern char shm_boundary; / boundary of shared memory */
25
26	greg	2.1	/* persistent processes define */
27			#ifdef F_SETLKW
28			#define PERSIST 1 /* normal persist */
29			#define PARALLEL 2 /* parallel persist */
30			#define PCHILD 3 /* child of normal persist */
31			#endif
32
33			char sigerr[NSIG]; / signal error messages */
34			char errfile = NULL; / error output file */
35
36	greg	2.18	int nproc = 1; /* number of processes */
37
38	greg	2.31	extern char formstr(int f); / string from format */
39			extern int setrtoutput(void); /* set output values */
40	greg	2.32
41	greg	2.18	int inform = 'a'; /* input format */
42			int outform = 'a'; /* output format */
43			char outvals = "v"; / output specification */
44	greg	2.1
45	greg	2.18	int hresolu = 0; /* horizontal (scan) size */
46			int vresolu = 0; /* vertical resolution */
47	greg	2.1
48	greg	2.33	extern int castonly; /* only doing ray-casting? */
49	greg	2.32
50	greg	2.18	int imm_irrad = 0; /* compute immediate irradiance? */
51			int lim_dist = 0; /* limit distance? */
52
53			#ifndef MAXMODLIST
54			#define MAXMODLIST 1024 /* maximum modifiers we'll track */
55			#endif
56	greg	2.1
57	greg	2.18	extern void (addobjnotify[])(); / object notification calls */
58			extern void tranotify(OBJECT obj);
59
60			char tralist[MAXMODLIST]; / list of modifers to trace (or no) */
61			int traincl = -1; /* include == 1, exclude == 0 */
62	greg	2.1
63	greg	2.10	static int loadflags = ~IO_FILES; /* what to load from octree */
64
65	schorsch	2.9	static void onsig(int signo);
66			static void sigdie(int signo, char *msg);
67			static void printdefaults(void);
68	greg	2.1
69
70			int
71	schorsch	2.9	main(int argc, char *argv[])
72	greg	2.1	{
73			#define check(ol,al) if (argv[i][ol] \|\| \
74			badarg(argc-i-1,argv+i+1,al)) \
75			goto badopt
76	schorsch	2.26	#define check_bool(olen,var) switch (argv[i][olen]) { \
77	greg	2.1	case '\0': var = !var; break; \
78			case 'y': case 'Y': case 't': case 'T': \
79			case '+': case '1': var = 1; break; \
80			case 'n': case 'N': case 'f': case 'F': \
81			case '-': case '0': var = 0; break; \
82			default: goto badopt; }
83	greg	2.25	extern char *octname;
84	greg	2.1	int persist = 0;
85	greg	2.18	char *octnm = NULL;
86	greg	2.22	char **tralp = NULL;
87			int duped1 = -1;
88	greg	2.1	int rval;
89			int i;
90			/* global program name */
91			progname = argv[0] = fixargv0(argv[0]);
92	greg	2.18	/* add trace notify function */
93			for (i = 0; addobjnotify[i] != NULL; i++)
94			;
95			addobjnotify[i] = tranotify;
96	greg	2.1	/* option city */
97			for (i = 1; i < argc; i++) {
98			/* expand arguments */
99			while ((rval = expandarg(&argc, &argv, i)) > 0)
100			;
101			if (rval < 0) {
102			sprintf(errmsg, "cannot expand '%s'", argv[i]);
103			error(SYSTEM, errmsg);
104			}
105			if (argv[i] == NULL \|\| argv[i][0] != '-')
106			break; /* break from options */
107			if (!strcmp(argv[i], "-version")) {
108			puts(VersionID);
109			quit(0);
110			}
111			if (!strcmp(argv[i], "-defaults") \|\|
112			!strcmp(argv[i], "-help")) {
113			printdefaults();
114			quit(0);
115			}
116			rval = getrenderopt(argc-i, argv+i);
117			if (rval >= 0) {
118			i += rval;
119			continue;
120			}
121			switch (argv[i][1]) {
122	greg	2.18	case 'n': /* number of cores */
123			check(2,"i");
124			nproc = atoi(argv[++i]);
125			if (nproc <= 0)
126			error(USER, "bad number of processes");
127			break;
128	greg	2.1	case 'x': /* x resolution */
129			check(2,"i");
130			hresolu = atoi(argv[++i]);
131			break;
132			case 'y': /* y resolution */
133			check(2,"i");
134			vresolu = atoi(argv[++i]);
135			break;
136			case 'w': /* warnings */
137			rval = erract[WARNING].pf != NULL;
138	schorsch	2.26	check_bool(2,rval);
139	greg	2.1	if (rval) erract[WARNING].pf = wputs;
140			else erract[WARNING].pf = NULL;
141			break;
142			case 'e': /* error file */
143			check(2,"s");
144			errfile = argv[++i];
145			break;
146			case 'l': /* limit distance */
147			if (argv[i][2] != 'd')
148			goto badopt;
149	schorsch	2.26	check_bool(3,lim_dist);
150	greg	2.1	break;
151			case 'I': /* immed. irradiance */
152	schorsch	2.26	check_bool(2,imm_irrad);
153	greg	2.1	break;
154			case 'f': /* format i/o */
155			switch (argv[i][2]) {
156			case 'a': /* ascii */
157			case 'f': /* float */
158			case 'd': /* double */
159			inform = argv[i][2];
160			break;
161			default:
162			goto badopt;
163			}
164			switch (argv[i][3]) {
165			case '\0':
166			outform = inform;
167			break;
168			case 'a': /* ascii */
169			case 'f': /* float */
170			case 'd': /* double */
171			case 'c': /* color */
172			check(4,"");
173			outform = argv[i][3];
174			break;
175			default:
176			goto badopt;
177			}
178			break;
179			case 'o': /* output */
180			outvals = argv[i]+2;
181			break;
182			case 'h': /* header output */
183			rval = loadflags & IO_INFO;
184	schorsch	2.26	check_bool(2,rval);
185	greg	2.1	loadflags = rval ? loadflags \| IO_INFO :
186			loadflags & ~IO_INFO;
187			break;
188			case 't': /* trace */
189			switch (argv[i][2]) {
190			case 'i': /* include */
191			case 'I':
192			check(3,"s");
193			if (traincl != 1) {
194			traincl = 1;
195			tralp = tralist;
196			}
197			if (argv[i][2] == 'I') { /* file */
198	greg	2.27	rval = wordfile(tralp, MAXMODLIST-(tralp-tralist),
199	greg	2.3	getpath(argv[++i],getrlibpath(),R_OK));
200	greg	2.1	if (rval < 0) {
201			sprintf(errmsg,
202			"cannot open trace include file \"%s\"",
203			argv[i]);
204			error(SYSTEM, errmsg);
205			}
206			tralp += rval;
207			} else {
208			*tralp++ = argv[++i];
209			*tralp = NULL;
210			}
211			break;
212			case 'e': /* exclude */
213			case 'E':
214			check(3,"s");
215			if (traincl != 0) {
216			traincl = 0;
217			tralp = tralist;
218			}
219			if (argv[i][2] == 'E') { /* file */
220	greg	2.27	rval = wordfile(tralp, MAXMODLIST-(tralp-tralist),
221	greg	2.3	getpath(argv[++i],getrlibpath(),R_OK));
222	greg	2.1	if (rval < 0) {
223			sprintf(errmsg,
224			"cannot open trace exclude file \"%s\"",
225			argv[i]);
226			error(SYSTEM, errmsg);
227			}
228			tralp += rval;
229			} else {
230			*tralp++ = argv[++i];
231			*tralp = NULL;
232			}
233			break;
234			default:
235			goto badopt;
236			}
237			break;
238			#ifdef PERSIST
239			case 'P': /* persist file */
240			if (argv[i][2] == 'P') {
241			check(3,"s");
242			persist = PARALLEL;
243			} else {
244			check(2,"s");
245			persist = PERSIST;
246			}
247			persistfile(argv[++i]);
248			break;
249			#endif
250			default:
251			goto badopt;
252			}
253			}
254	greg	2.34	if (nproc > 1 && persist)
255			error(USER, "multiprocessing incompatible with persist file");
256	greg	2.1	/* initialize object types */
257			initotypes();
258			/* initialize urand */
259	greg	2.14	if (rand_samp) {
260			srandom((long)time(0));
261			initurand(0);
262			} else {
263			srandom(0L);
264			initurand(2048);
265			}
266	greg	2.1	/* set up signal handling */
267			sigdie(SIGINT, "Interrupt");
268	schorsch	2.5	#ifdef SIGHUP
269	greg	2.1	sigdie(SIGHUP, "Hangup");
270	schorsch	2.5	#endif
271	greg	2.1	sigdie(SIGTERM, "Terminate");
272	schorsch	2.5	#ifdef SIGPIPE
273	greg	2.1	sigdie(SIGPIPE, "Broken pipe");
274	schorsch	2.5	#endif
275			#ifdef SIGALRM
276	greg	2.1	sigdie(SIGALRM, "Alarm clock");
277	schorsch	2.5	#endif
278	greg	2.1	#ifdef SIGXCPU
279			sigdie(SIGXCPU, "CPU limit exceeded");
280			sigdie(SIGXFSZ, "File size exceeded");
281			#endif
282			/* open error file */
283			if (errfile != NULL) {
284			if (freopen(errfile, "a", stderr) == NULL)
285			quit(2);
286			fprintf(stderr, "************\n* PID %5d: ",
287			getpid());
288			printargs(argc, argv, stderr);
289			putc('\n', stderr);
290			fflush(stderr);
291			}
292			#ifdef NICE
293			nice(NICE); /* lower priority */
294			#endif
295			/* get octree */
296			if (i == argc)
297	greg	2.18	octnm = NULL;
298	greg	2.1	else if (i == argc-1)
299	greg	2.18	octnm = argv[i];
300	greg	2.1	else
301			goto badopt;
302	greg	2.18	if (octnm == NULL)
303	greg	2.1	error(USER, "missing octree argument");
304			/* set up output */
305			#ifdef PERSIST
306			if (persist) {
307			duped1 = dup(fileno(stdout)); /* don't lose our output */
308			openheader();
309			}
310			#endif
311			if (outform != 'a')
312	schorsch	2.4	SET_FILE_BINARY(stdout);
313	greg	2.31	rval = setrtoutput();
314	greg	2.24	readoct(octname = octnm, loadflags, &thescene, NULL);
315	greg	2.1	nsceneobjs = nobjects;
316
317			if (loadflags & IO_INFO) { /* print header */
318			printargs(i, argv, stdout);
319			printf("SOFTWARE= %s\n", VersionID);
320			fputnow(stdout);
321	greg	2.31	if (rval > 0) /* saved from setrtoutput() call */
322			printf("NCOMP=%d\n", rval);
323	greg	2.30	if ((outform == 'f') \| (outform == 'd'))
324			fputendian(stdout);
325	greg	2.1	fputformat(formstr(outform), stdout);
326			putchar('\n');
327			}
328
329	greg	2.32	if (!castonly) { /* any actual ray traversal to do? */
330
331			ray_init_pmap(); /* PMAP: set up & load photon maps */
332
333			marksources(); /* find and mark sources */
334
335			setambient(); /* initialize ambient calculation */
336	greg	2.33	} else
337			distantsources(); /* else mark only distant sources */
338	greg	2.35
339	greg	2.36	fflush(stdout); /* in case we're duplicating header */
340	greg	2.35
341	greg	2.1	#ifdef PERSIST
342			if (persist) {
343			/* reconnect stdout */
344			dup2(duped1, fileno(stdout));
345			close(duped1);
346			if (persist == PARALLEL) { /* multiprocessing */
347			preload_objs(); /* preload scene */
348			shm_boundary = (char *)malloc(16);
349			strcpy(shm_boundary, "SHM_BOUNDARY");
350			while ((rval=fork()) == 0) { /* keep on forkin' */
351			pflock(1);
352			pfhold();
353	greg	2.15	ambsync(); /* load new values */
354	greg	2.1	}
355			if (rval < 0)
356			error(SYSTEM, "cannot fork child for persist function");
357	greg	2.15	pfdetach(); /* parent will run then exit */
358	greg	2.1	}
359			}
360			runagain:
361			if (persist)
362			dupheader(); /* send header to stdout */
363			#endif
364			/* trace rays */
365	greg	2.19	rtrace(NULL, nproc);
366	greg	2.1	/* flush ambient file */
367			ambsync();
368			#ifdef PERSIST
369			if (persist == PERSIST) { /* first run-through */
370			if ((rval=fork()) == 0) { /* child loops until killed */
371			pflock(1);
372			persist = PCHILD;
373			} else { /* original process exits */
374			if (rval < 0)
375			error(SYSTEM, "cannot fork child for persist function");
376			pfdetach(); /* parent exits */
377			}
378			}
379			if (persist == PCHILD) { /* wait for a signal then go again */
380			pfhold();
381			raynum = nrays = 0; /* reinitialize */
382			goto runagain;
383			}
384			#endif
385	greg	2.23
386			ray_done_pmap(); /* PMAP: free photon maps */
387
388	greg	2.1	quit(0);
389
390			badopt:
391			sprintf(errmsg, "command line error at '%s'", argv[i]);
392			error(USER, errmsg);
393	schorsch	2.9	return 1; /* pro forma return */
394	greg	2.1
395			#undef check
396	schorsch	2.26	#undef check_bool
397	greg	2.1	}
398
399
400			void
401	schorsch	2.9	wputs( /* warning output function */
402			char *s
403			)
404	greg	2.1	{
405			int lasterrno = errno;
406			eputs(s);
407			errno = lasterrno;
408			}
409
410
411			void
412	schorsch	2.9	eputs( /* put string to stderr */
413			register char *s
414			)
415	greg	2.1	{
416			static int midline = 0;
417
418			if (!*s)
419			return;
420			if (!midline++) {
421			fputs(progname, stderr);
422			fputs(": ", stderr);
423			}
424			fputs(s, stderr);
425			if (s[strlen(s)-1] == '\n') {
426			fflush(stderr);
427			midline = 0;
428			}
429			}
430
431
432	schorsch	2.9	static void
433			onsig( /* fatal signal */
434			int signo
435			)
436	greg	2.1	{
437			static int gotsig = 0;
438
439			if (gotsig++) /* two signals and we're gone! */
440			_exit(signo);
441
442	schorsch	2.5	#ifdef SIGALRM
443	greg	2.1	alarm(15); /* allow 15 seconds to clean up */
444			signal(SIGALRM, SIG_DFL); /* make certain we do die */
445	schorsch	2.5	#endif
446	greg	2.1	eputs("signal - ");
447			eputs(sigerr[signo]);
448			eputs("\n");
449			quit(3);
450			}
451
452
453	schorsch	2.9	static void
454			sigdie( /* set fatal signal */
455			int signo,
456			char *msg
457			)
458	greg	2.1	{
459			if (signal(signo, onsig) == SIG_IGN)
460			signal(signo, SIG_IGN);
461			sigerr[signo] = msg;
462			}
463
464
465	schorsch	2.9	static void
466	schorsch	2.8	printdefaults(void) /* print default values to stdout */
467	greg	2.1	{
468			register char *cp;
469
470			if (imm_irrad)
471			printf("-I+\t\t\t\t# immediate irradiance on\n");
472	greg	2.18	printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc);
473	greg	2.21	printf("-x %-9d\t\t\t# %s\n", hresolu,
474			vresolu && hresolu ? "x resolution" : "flush interval");
475	greg	2.16	printf("-y %-9d\t\t\t# y resolution\n", vresolu);
476	greg	2.1	printf(lim_dist ? "-ld+\t\t\t\t# limit distance on\n" :
477			"-ld-\t\t\t\t# limit distance off\n");
478	greg	2.10	printf("-h%c\t\t\t\t# %s header\n", loadflags & IO_INFO ? '+' : '-',
479			loadflags & IO_INFO ? "output" : "no");
480	greg	2.1	printf("-f%c%c\t\t\t\t# format input/output = %s/%s\n",
481			inform, outform, formstr(inform), formstr(outform));
482	greg	2.10	printf("-o%-9s\t\t\t# output", outvals);
483	greg	2.1	for (cp = outvals; *cp; cp++)
484			switch (*cp) {
485	greg	2.10	case 't': case 'T': printf(" trace"); break;
486	greg	2.1	case 'o': printf(" origin"); break;
487			case 'd': printf(" direction"); break;
488	greg	2.28	case 'r': printf(" reflect_contrib"); break;
489			case 'R': printf(" reflect_length"); break;
490			case 'x': printf(" unreflect_contrib"); break;
491			case 'X': printf(" unreflect_length"); break;
492	greg	2.1	case 'v': printf(" value"); break;
493	greg	2.13	case 'V': printf(" contribution"); break;
494	greg	2.1	case 'l': printf(" length"); break;
495			case 'L': printf(" first_length"); break;
496			case 'p': printf(" point"); break;
497			case 'n': printf(" normal"); break;
498			case 'N': printf(" unperturbed_normal"); break;
499			case 's': printf(" surface"); break;
500			case 'w': printf(" weight"); break;
501	greg	2.13	case 'W': printf(" coefficient"); break;
502	greg	2.1	case 'm': printf(" modifier"); break;
503	greg	2.10	case 'M': printf(" material"); break;
504	greg	2.37	case '~': printf(" tilde"); break;
505	greg	2.1	}
506			putchar('\n');
507			printf(erract[WARNING].pf != NULL ?
508			"-w+\t\t\t\t# warning messages on\n" :
509			"-w-\t\t\t\t# warning messages off\n");
510			print_rdefaults();
511			}