| 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 |
|
|
}
|
