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- /* bms.c - batch-mode MandelSpawn main program */
-
- /* This file is part of MandelSpawn, a parallel Mandelbrot program.
-
- Copyright (C) 1990, 1991 Andreas Gustafsson
-
- MandelSpawn is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License, version 1,
- as published by the Free Software Foundation.
-
- MandelSpawn is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License,
- version 1, along with this program; if not, write to the Free
- Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
- */
-
- /* bsd43 is defined on Sonys, but not on MtXinu more/bsd. You can't win. */
- #ifdef bsd43
- #ifndef NO_MALLOC_H
- #define NO_MALLOC_H
- #endif
- #endif
-
- #ifdef _AIX
- #ifndef NEED_SYS_SELECT_H
- #define NEED_SYS_SELECT_H
- #endif
- #endif
-
- /* 4.3 BSD wants these two for select() */
- #include <sys/types.h>
- #include <sys/time.h>
-
- #include <stdio.h>
- #include <string.h>
- #include <errno.h>
- extern int errno; /* argh */
- #ifndef NO_MALLOC_H
- #include <malloc.h>
- #else
- char *malloc(), *realloc(); void free(); /* double argh */
- #endif
- #include <math.h> /* for atof() */
- #ifdef NEED_SYS_SELECT_H
- #include <sys/select.h>
- #endif
-
- #include "work.h"
- #include "mspawn.h"
- #include "version.h"
-
- #define TIMEOUT 15000 /* default computation server timeout in millisecs */
-
- /* number of pixels to print on each line in the portable graymap file */
- /* (watch out for line length limit of 70 characters) */
- #define PGM_NPL 8
-
-
- char *me; /* name of program */
-
-
- /* various global mode flags */
-
- int done = 0; /* set when all chunks have arrived */
- int verbose = 0; /* verbosity level */
- int statistics = 0; /* print statistics if set */
- int pgm_ascii = 0; /* force ASCII graymap format */
- int nooutput = 0; /* generate no output (for testing only) */
-
-
- /* structure for global data */
-
- typedef struct bms_state
- { ms_state ms;
- union
- { unsigned char *bytes;
- unsigned short *shorts;
- } frame;
- } bms_state;
-
-
- /* report a fatal error and die */
-
- void error(s) char *s;
- { fprintf(stderr, "%s: %s\n", me, s);
- exit(1);
- }
-
-
- /* handle input from a computation server by drawing in an in-core buffer */
-
- void ms_draw(client, client_data, data) /*ARGSUSED*/
- char *client; /* unused */
- char *client_data;
- char *data;
- { ms_client_info *the_info = (ms_client_info *) client_data;
- bms_state *b = (bms_state *) client;
- unsigned int x, y, width, height;
- unsigned int i, j;
- if(verbose)
- { putc('.', stderr);
- fflush(stderr);
- }
- x=the_info->s.x;
- y=the_info->s.y;
- width=the_info->s.width;
- height=the_info->s.height;
-
- switch(b->ms.bytes_per_count)
- { case 1:
- { unsigned char *datap = (unsigned char *) data;
- unsigned char *bufp_left= (unsigned char *)
- b->frame.bytes + b->ms.width * y + x;
- for(j=0; j<height; j++)
- { unsigned char *bufp= bufp_left;
- for(i=0; i<width; i++)
- { *bufp++ = *datap++;
- }
- bufp_left += b->ms.width;
- }
- }
- break;
- case 2:
- { unsigned short *datap = (unsigned short *) data;
- unsigned short *bufp_left= (unsigned short *)
- b->frame.shorts + b->ms.width * y + x;
- for(j=0; j<height; j++)
- { unsigned short *bufp= bufp_left;
- for(i=0; i<width; i++)
- { *bufp++ = *datap++;
- }
- bufp_left += b->ms.width;
- }
- }
- break;
- default:
- error("bad iteration count size");
- break;
- }
-
- b->ms.chunks_out--; /* one less to go */
-
- if(b->ms.chunks_out == 0)
- done=1;
- }
-
-
- /* provide memory allocation and error reporting services to the */
- /* workforce module */
-
- char *wf_alloc(size) unsigned size;
- { char *r = malloc(size);
- if(!r)
- error("malloc");
- return(r);
- }
-
- char *wf_realloc(p, size) char *p; unsigned size;
- { char *r = realloc(p, size);
- if(!r)
- error("realloc");
- return(r);
- }
-
- void wf_free(p) char *p;
- { free(p);
- }
-
- void wf_error(s) char *s;
- { error(s);
- }
-
- void wf_warn(s) char *s;
- { fprintf(stderr, "warning: %s\n", s);
- }
-
-
- /* unique values to identify options */
-
- enum bms_opt
- { opt_height, opt_width, opt_x, opt_y, opt_range,
- opt_julia, opt_colours, opt_cx, opt_cy,
- opt_chunk_width, opt_chunk_height, opt_verbose,
- opt_nooutput, opt_statistics, opt_version, opt_ascii
- };
-
- struct option
- { enum bms_opt id;
- char *name;
- int has_arg;
- };
-
- struct option options[] =
- { { opt_height, "height", 1 },
- { opt_width, "width", 1 },
- { opt_x, "x", 1 },
- { opt_y, "y", 1 },
- { opt_range, "range", 1 },
- { opt_julia, "julia", 0 },
- { opt_colours, "colours", 1 },
- { opt_colours, "colors", 1 },
- { opt_colours, "iterations", 1 },
- { opt_cx, "cx", 1 },
- { opt_cy, "cy", 1 },
- { opt_chunk_width, "chunk_width", 1 },
- { opt_chunk_height, "chunk_height", 1 },
- { opt_verbose, "verbose", 0 },
- { opt_nooutput, "nooutput", 0 },
- { opt_statistics, "statistics", 0 },
- { opt_version, "version", 0 },
- { opt_ascii, "ascii", 0 }
- };
-
-
- int main(argc, argv)
- int argc; char **argv;
- { bms_state bms;
- wf_state *workforce;
- int isock;
- int i,j;
- char *optarg;
- fd_set readfds;
- struct timeval tv, zero_tv;
-
- me=argv[0];
-
- /* defaults */
- bms.ms.width = 64;
- bms.ms.height = 24;
- bms.ms.center_x = -0.5;
- bms.ms.center_y = 0.0;
- bms.ms.xrange = 4.0;
- bms.ms.julia = 0;
- /* bms.ms.c_x...*/
- bms.ms.job.iteration_limit=250;
-
- bms.ms.chunk_height = bms.ms.chunk_width = 32;
-
- for(i=1; i<argc; i++)
- { char *arg = argv[i];
- if(*arg == '-')
- for(j=0; j<sizeof(options)/sizeof(options[0]); j++)
- { if(strcmp(arg+1, options[j].name) == 0)
- { if(options[j].has_arg)
- { if(argc < i)
- error("option requires argument");
- optarg = argv[++i];
- }
- switch(options[j].id)
- { case opt_width: bms.ms.width=atoi(optarg); break;
- case opt_height: bms.ms.height=atoi(optarg); break;
- case opt_x: bms.ms.center_x=atof(optarg); break;
- case opt_y: bms.ms.center_y=atof(optarg); break;
- case opt_range: bms.ms.xrange=atof(optarg); break;
- case opt_julia: bms.ms.julia=1; break;
- case opt_colours: bms.ms.job.iteration_limit=atoi(optarg); break;
- case opt_cx: bms.ms.c_x=atof(optarg); break;
- case opt_cy: bms.ms.c_y=atof(optarg); break;
- case opt_chunk_width: bms.ms.chunk_width=atoi(optarg); break;
- case opt_chunk_height: bms.ms.chunk_height=atoi(optarg); break;
- case opt_verbose: verbose++; break;
- case opt_nooutput: nooutput++; break;
- case opt_statistics: statistics++; break;
- case opt_version:
- printf("bms version %s\n", ms_version);
- exit(0);
- break;
- case opt_ascii: pgm_ascii++; break;
- default: error("internal option procesing error");
- }
- goto nextopt;
- } /* if !strcmp */
- } /* for j */
- error("unrecognized option");
- nextopt: ;
- } /* for i */
-
- bms.ms.bytes_per_count = (bms.ms.job.iteration_limit > 256 ? 2 : 1);
-
- ms_init(&bms.ms, workforce = wf_init(TIMEOUT));
- isock=wf_socket(workforce);
-
- ms_calculate_job_parameters(&bms.ms, &bms.ms.job);
-
- /* allocate memory for frame buffer */
- switch(bms.ms.bytes_per_count)
- { case 1:
- bms.frame.bytes = (unsigned char *)
- malloc(bms.ms.width * bms.ms.height * sizeof(unsigned char));
- break;
- case 2:
- bms.frame.shorts = (unsigned short *)
- malloc(bms.ms.width * bms.ms.height * sizeof(unsigned short));
- break;
- default:
- error("bad iteration count size"); break;
- }
-
- ms_dispatch_rect(&bms.ms, (char *) &bms, 0, 0, bms.ms.width, bms.ms.height);
-
- zero_tv.tv_sec=0;
- zero_tv.tv_usec=0;
- tv.tv_sec=1;
- tv.tv_usec=0;
-
- /* main loop: receive replies and build the picture in memory */
- while(! done)
- { int nready;
-
- /* keep polling as long as there is data; it's no use bothering */
- /* with timeouts if we're fully occupied handling incoming data */
- do
- {
- redo_1:
- FD_ZERO(&readfds);
- FD_SET(isock, &readfds);
- nready=select(isock+1, &readfds, NULL, NULL, &zero_tv);
- if(nready== -1)
- { if(errno==EINTR)
- goto redo_1;
- error("select");
- }
- else if(nready>0 && FD_ISSET(isock, &readfds))
- wf_handle_socket_input(workforce, (char *) 0);
- } while(nready);
-
- /* no more data; handle any pending timeouts and then go to sleep for */
- /* a second or until new data arrive */
- wf_tick(workforce);
-
- redo_2:
- FD_ZERO(&readfds);
- FD_SET(isock, &readfds);
- nready=select(isock+1, &readfds, NULL, NULL, &tv);
- if(nready== -1)
- { if(errno==EINTR)
- goto redo_2;
- error("select");
- }
- else if(nready>0 && FD_ISSET(isock, &readfds))
- wf_handle_socket_input(workforce, (char *) 0);
- }
-
- /* we have received all the replies; write out the finished picture */
- if(! nooutput)
- {
- if(verbose)
- { putc('\n', stderr);
- }
- if(bms.ms.bytes_per_count > 1 || pgm_ascii) /* ASCII pgm format */
- { unsigned i, j;
- printf("P2\n%d %d\n%d\n",
- bms.ms.width, bms.ms.height, bms.ms.job.iteration_limit-1);
- for(j=0; j<bms.ms.height; j++)
- { for(i=0; i<bms.ms.width; i++)
- printf("%d%c",
- bms.ms.bytes_per_count == 2 ?
- bms.frame.shorts[j*bms.ms.width+i] :
- bms.frame.bytes[j*bms.ms.width+i],
- i%PGM_NPL==(PGM_NPL-1) ? '\n' : ' ');
- if(i%PGM_NPL)
- putchar('\n');
- }
- }
- else /* binary pgm format */
- { unsigned i, j;
- printf("P5\n%d %d\n%d\n",
- bms.ms.width, bms.ms.height, bms.ms.job.iteration_limit-1);
- #ifdef PARANOIA
- for(j=0; j<bms.ms.height; j++)
- for(i=0; i<bms.ms.width; i++)
- putchar(bms.frame.bytes[j*bms.ms.width+i]);
- #else
- /* we happen to use the same internal representation for the image */
- /* as the data part of a binary pgm file, so we can dump it as such */
- fwrite(bms.frame.bytes, sizeof(char),
- bms.ms.width*bms.ms.height, stdout);
- #endif
- }
- }
- if(statistics)
- { wf_print_stats(workforce, stderr);
- }
- exit(0);
- }
-