src/rt/raypwin.c

#ifndef lint
static const char RCSid[] = "$Id: raypwin.c,v 2.2 2008/02/09 00:17:51 greg Exp $";
#endif
/*
 *  raypwin.c - interface for parallel rendering using Radiance (Windows ver)
 *
 *  External symbols declared in ray.h
 */

#include "copyright.h"

/*
 * See raypcalls.c for an explanation of these routines.
 */

/***** XXX CURRENTLY, THIS IS JUST A COLLECTION OF IMPOTENT STUBS XXX *****/

#include  "ray.h"

int             ray_pnprocs = 0;        /* number of child processes */
int             ray_pnidle = 0;         /* number of idle children */

static RAY      queued_ray;

extern void
ray_pinit(              /* initialize ray-tracing processes */
        char    *otnm,
        int     nproc
)
{
        ray_pdone(0);
        ray_init(otnm);
        ray_popen(nproc);
}


extern void
ray_psend(                      /* add a ray to our send queue */
        RAY     *r
)
{
        if (r == NULL)
                return;
        if (ray_pnidle <= 0)
                error(INTERNAL, "illegal call to ray_psend");
        queued_ray = *r;
        ray_pnidle = 0;
}


extern int
ray_pqueue(                     /* queue a ray for computation */
        RAY     *r
)
{
        if (r == NULL)
                return(0);
        ray_value(r);
        return(1);
}


extern int
ray_presult(            /* check for a completed ray */
        RAY     *r,
        int     poll
)
{
        if (r == NULL)
                return(0);
        if (ray_pnidle <= 0) {
                ray_value(&queued_ray);
                *r = queued_ray;
                ray_pnidle = 1;
                return(1);
        }
        return(0);
}


extern void
ray_pdone(              /* reap children and free data */
        int     freall
)
{
        ray_done(freall);
        ray_pnprocs = ray_pnidle = 0;
}


extern void
ray_popen(                      /* open the specified # processes */
        int     nadd
)
{
        if (ray_pnprocs + nadd > 1) {
                error(WARNING, "Only single process supported");
                nadd = 1 - ray_pnprocs;
        }
        ray_pnprocs += nadd;
        ray_pnidle += nadd;
}


extern void
ray_pclose(             /* close one or more child processes */
        int     nsub
)
{
        if (nsub > ray_pnprocs)
                nsub = ray_pnprocs;
        ray_pnprocs -= nsub;
        if ((ray_pnidle -= nsub) < 0)
                ray_pnidle = 0;
}


void
quit(ec)                        /* make sure exit is called */
int     ec;
{
        exit(ec);
}
Revision:	2.3
Committed:	Mon Feb 11 21:17:25 2008 UTC (16 years, 2 months ago) by greg
Content type:	text/plain
Branch:	MAIN
Changes since 2.2:	+2 -4 lines
Log Message:	Minor fixes
#	User	Rev	Content
1	greg	2.1	#ifndef lint
2	greg	2.3	static const char RCSid[] = "$Id: raypwin.c,v 2.2 2008/02/09 00:17:51 greg Exp $";
3	greg	2.1	#endif
4			/*
5			* raypwin.c - interface for parallel rendering using Radiance (Windows ver)
6			*
7			* External symbols declared in ray.h
8			*/
9
10			#include "copyright.h"
11
12			/*
13			* See raypcalls.c for an explanation of these routines.
14			*/
15
16	greg	2.2	/*** XXX CURRENTLY, THIS IS JUST A COLLECTION OF IMPOTENT STUBS XXX ***/
17	greg	2.1
18			#include "ray.h"
19
20	greg	2.2	int ray_pnprocs = 0; /* number of child processes */
21			int ray_pnidle = 0; /* number of idle children */
22
23			static RAY queued_ray;
24	greg	2.1
25			extern void
26			ray_pinit( /* initialize ray-tracing processes */
27			char *otnm,
28			int nproc
29			)
30			{
31	greg	2.2	ray_pdone(0);
32			ray_init(otnm);
33			ray_popen(nproc);
34	greg	2.1	}
35
36
37			extern void
38			ray_psend( /* add a ray to our send queue */
39			RAY *r
40			)
41			{
42	greg	2.2	if (r == NULL)
43			return;
44			if (ray_pnidle <= 0)
45			error(INTERNAL, "illegal call to ray_psend");
46			queued_ray = *r;
47			ray_pnidle = 0;
48	greg	2.1	}
49
50
51			extern int
52			ray_pqueue( /* queue a ray for computation */
53			RAY *r
54			)
55			{
56	greg	2.2	if (r == NULL)
57			return(0);
58			ray_value(r);
59			return(1);
60	greg	2.1	}
61
62
63			extern int
64			ray_presult( /* check for a completed ray */
65			RAY *r,
66			int poll
67			)
68			{
69	greg	2.2	if (r == NULL)
70			return(0);
71	greg	2.3	if (ray_pnidle <= 0) {
72	greg	2.2	ray_value(&queued_ray);
73			*r = queued_ray;
74			ray_pnidle = 1;
75			return(1);
76			}
77			return(0);
78	greg	2.1	}
79
80
81			extern void
82			ray_pdone( /* reap children and free data */
83			int freall
84			)
85			{
86	greg	2.2	ray_done(freall);
87			ray_pnprocs = ray_pnidle = 0;
88	greg	2.1	}
89
90
91			extern void
92			ray_popen( /* open the specified # processes */
93			int nadd
94			)
95			{
96	greg	2.2	if (ray_pnprocs + nadd > 1) {
97			error(WARNING, "Only single process supported");
98			nadd = 1 - ray_pnprocs;
99			}
100			ray_pnprocs += nadd;
101			ray_pnidle += nadd;
102	greg	2.1	}
103
104
105			extern void
106			ray_pclose( /* close one or more child processes */
107			int nsub
108			)
109			{
110	greg	2.2	if (nsub > ray_pnprocs)
111			nsub = ray_pnprocs;
112			ray_pnprocs -= nsub;
113			if ((ray_pnidle -= nsub) < 0)
114			ray_pnidle = 0;
115	greg	2.1	}
116
117
118			void
119			quit(ec) /* make sure exit is called */
120			int ec;
121			{
122			exit(ec);
123			}