4 * this program tries helping to understand the amorphous depuration
5 * and recrystallization of SiCx while ion implanation. hopefully the program
6 * will simulate the stabilization of the selforganizing structure in the
10 * - J. K. N. Lindner. Habilationsschrift, Universitaet Augsburg.
11 * - Maik Haeberlen. Diplomarbeit, Universitaet Augsburg.
18 #include <sys/types.h>
23 /* important defines */
26 /* function prototypes */
30 /* global variables */
31 u32 *rand_buf,*rand_current;
32 char random_file[MAX_CHARS_RANDOM_FILE];
34 int random_fd; /* /dev/urandom file descriptor */
40 printf("-a <value> \t slope of nuclear energy loss (default %d)\n",DEFAULT_SLOPE_NEL);
41 printf("-c <value> \t nuclear enery loss at depths 0 (default %d)\n",DEFAULT_START_NEL);
42 printf("-x <value> \t # x cells (default %d)\n",DEFAULT_X_SEG);
43 printf("-y <value> \t # y cells (default %d)\n",DEFAULT_Y_SEG);
44 printf("-z <value> \t # z cells (default %d)\n",DEFAULT_Z_SEG);
45 printf("-s <value> \t # steps to calculate (default %d)\n",DEFAULT_STEPS);
46 puts("-X <value> \t display area intercept point x (default # x celss / 2)");
47 puts("-Y <value> \t display area intercept point y (default # y cells / 2)");
48 puts("-Z <value> \t display area intercept point z (default # z cells / 2)");
49 printf("-d <value> \t refresh every <value> loops (default %d)\n",DEFAULT_DISPLAY_REF_RATE);
50 printf("-r <value> \t pressure range from amorphous SiCx (default %d)\n",DEFAULT_A_P_RANGE);
51 printf("-f <value> \t faktor for pressure from amorphous SiCx (default %f)\n",DEFAULT_A_P_FAKTOR);
52 printf("-p <value> \t p0 for probability of cell getting amorph (default %f)\n",DEFAULT_A_P_P0);
53 printf("-C <value> \t C start concentration (default %d)\n",DEFAULT_C_DIST_START_CONC);
54 printf("-S <value> \t slope of linear C distribution (default %d)\n",DEFAULT_C_DIST_SLOPE);
55 puts("-R <file> \t read random data from file (default not used)");
56 puts("-D <file> \t dump cell info into <file> (default not used)");
57 puts("-L <file> \t load cell info and display it (default no)");
61 int make_amorph(cell *cell)
67 int make_cryst(cell *cell)
69 cell->status&=~AMORPH;
73 int load_from_file(char *file,display *display)
77 if((load_file_fd=open(file,O_RDONLY))<0)
79 puts("cannot open load file");
82 if(read(load_file_fd,&(display->max_x),sizeof(u32))<sizeof(u32))
84 puts("failed reading max x");
87 if(read(load_file_fd,&(display->max_y),sizeof(u32))<sizeof(u32))
89 puts("failed reading max y");
92 if(read(load_file_fd,&(display->max_z),sizeof(u32))<sizeof(u32))
94 puts("failed reading max z");
97 if(read(load_file_fd,display->cell_p,display->max_x*display->max_y*display->max_z*sizeof(cell))<display->max_x*display->max_y*display->max_z*sizeof(cell))
99 puts("failed reading cell info from file");
107 int save_to_file(char *file,display *display)
111 if((save_file_fd=open(file,O_CREAT|O_WRONLY|O_TRUNC))<0)
113 puts("cannot open save file");
116 if(write(save_file_fd,&(display->max_x),sizeof(u32))<sizeof(u32))
118 puts("failed saving max x");
121 if(write(save_file_fd,&(display->max_y),sizeof(u32))<sizeof(u32))
123 puts("failed saving max y");
126 if(write(save_file_fd,&(display->max_z),sizeof(u32))<sizeof(u32))
128 puts("failed saving max z");
131 if(write(save_file_fd,display->cell_p,display->max_x*display->max_y*display->max_z*sizeof(cell))!=display->max_x*display->max_y*display->max_z*sizeof(cell))
133 puts("saving file failed");
141 int distrib_c_conc(cell *cell_p,int c_c0,int c_slope,u32 c_conc,u32 x_max,u32 y_max,u32 z_max)
144 u32 area,c_area,total,count;
149 sum_c_z=c_c0*z_max+c_slope*gr;
154 c_area=(c_conc*(c_c0+(i+1)*c_slope))/sum_c_z;
157 if(!(cell_p+j+i*area)->status&AMORPH) count++;
161 if(!(cell_p+j+i*area)->status&AMORPH)
163 (cell_p+j+i*area)->conc=c_area/count;
168 while(j<c_area%count)
172 if(!(cell_p+x+y*x_max+i*area)->status&AMORPH)
174 (cell_p+x+y*x_max+i*area)->conc+=1;
181 while(i<c_conc-total)
185 z=rand_get_lgp(c_slope,c_c0,z_max);
186 if(!(cell_p+x+y*x_max+z*area)->status&AMORPH)
188 (cell_p+x+y*x_max+z*area)->conc+=1;
195 /* look at cell ... */
196 int process_cell(cell *cell_p,u32 x,u32 y,u32 z,u32 x_max,u32 y_max,u32 z_max,int range,double faktor,double p0,u32 *c_conc)
202 this_cell=cell_p+x+y*x_max+z*x_max*y_max;
203 pressure=p0*URAND_2BYTE_MAX;
205 for(i=-range;i<=range;i++)
207 for(j=-range;j<=range;j++)
209 // z relaxation, no pressure in z direction
210 // for(k=-range;k<=range;k++)
212 if(!(i==0 && j==0)) // && k==0))
214 // if((cell_p+((x+x_max+i)%x_max)+((y+j+y_max)%y_max)*x_max+((z+k+z_max)%z_max)*x_max*y_max)->status&AMORPH) pressure+=faktor*URAND_2BYTE_MAX/(i*i+j*j+k*k);
215 if((cell_p+((x+x_max+i)%x_max)+((y+j+y_max)%y_max)*x_max+z*x_max*y_max)->status&AMORPH) pressure+=faktor*URAND_2BYTE_MAX/(i*i+j*j);
220 pressure*=this_cell->conc;
221 if(this_cell->status&AMORPH)
223 /* wrong probability! just test by now ...*/
224 if(rand_get(URAND_2BYTE_MAX)>pressure)
226 make_cryst(this_cell);
227 *c_conc=*c_conc+1+this_cell->conc;
231 if(rand_get(URAND_2BYTE_MAX)<=pressure)
233 make_amorph(this_cell);
234 *c_conc=*c_conc+1-this_cell->conc;
240 int main(int argc,char **argv)
242 u32 x_cell,y_cell,z_cell; /* amount of segments */
243 u32 x,y,z; /* cells */
244 int i; /* for counting */
245 int slope_nel,start_nel; /* nuclear energy loss: slope, constant */
246 int a_p_range; /* p. range of amorphous sic */
247 double a_p_faktor,a_p_p0; /* p0 and faktor of amorphous sic */
248 int c_dist_c0,c_dist_slope; /* c start concentration and linear slope of c distribution */
250 int steps; /* # steps */
252 struct __display display;
253 u32 display_x,display_y,display_z; /* intercept point of diplayed areas */
254 u32 display_refresh_rate; /* refresh rate for display */
255 int quit=0; /* continue/quit status */
256 char save_file[MAX_CHARS_SAVE_FILE];
257 char load_file[MAX_CHARS_LOAD_FILE];
259 printfd("debug: sizeof my u32 variable: %d\n",sizeof(u32));
260 printfd("debug: sizeof my cell struct: %d\n",sizeof(cell));
263 x_cell=DEFAULT_X_SEG;
264 y_cell=DEFAULT_Y_SEG;
265 z_cell=DEFAULT_Z_SEG;
266 slope_nel=DEFAULT_SLOPE_NEL;
267 start_nel=DEFAULT_START_NEL;
268 a_p_range=DEFAULT_A_P_RANGE;
269 a_p_faktor=DEFAULT_A_P_FAKTOR;
270 a_p_p0=DEFAULT_A_P_P0;
271 c_dist_c0=DEFAULT_C_DIST_START_CONC;
272 c_dist_slope=DEFAULT_C_DIST_SLOPE;
278 display_refresh_rate=DEFAULT_DISPLAY_REF_RATE;
279 strcpy(random_file,"");
280 strcpy(save_file,"");
281 strcpy(load_file,"");
283 /* parse command args */
295 slope_nel=atoi(argv[++i]);
298 start_nel=atoi(argv[++i]);
301 x_cell=atoi(argv[++i]);
304 y_cell=atoi(argv[++i]);
307 z_cell=atoi(argv[++i]);
310 steps=atoi(argv[++i]);
313 display_x=atoi(argv[++i]);
316 display_y=atoi(argv[++i]);
319 display_z=atoi(argv[++i]);
322 display_refresh_rate=atoi(argv[++i]);
325 a_p_range=atoi(argv[++i]);
328 a_p_faktor=atof(argv[++i]);
331 a_p_p0=atof(argv[++i]);
334 c_conc=atoi(argv[++i]);
337 c_dist_c0=atoi(argv[++i]);
340 c_dist_slope=atoi(argv[++i]);
343 strcpy(random_file,argv[++i]);
346 strcpy(save_file,argv[++i]);
349 strcpy(load_file,argv[++i]);
359 if(!strcmp(random_file,""))
361 if((random_fd=open("/dev/urandom",O_RDONLY))<0)
363 puts("cannot open /dev/urandom");
368 if((random_fd=open(random_file,O_RDONLY))<0)
370 puts("cannot open random file");
374 /* allocate random number buffer */
375 printf("malloc will free %d bytes now ...\n",RAND_BUF_SIZE);
376 if((rand_buf=(u32 *)malloc(RAND_BUF_SIZE))==NULL)
378 puts("failed allocating memory for random numbers");
381 rand_current=rand_buf+RAND_BUF_SIZE;
383 /* calculate gr one time! */
385 for(i=1;i<=z_cell;i++) gr+=i;
386 printfd("debug: gr = %d\n",gr);
389 printf("malloc will free %d bytes now ...\n",x_cell*y_cell*z_cell*sizeof(cell));
390 if((cell_p=(cell *)malloc(x_cell*y_cell*z_cell*sizeof(cell)))==NULL)
392 puts("failed allocating memory for cells");
395 memset(cell_p,0,x_cell*y_cell*z_cell*sizeof(cell));
398 if(strcmp(load_file,""))
400 display.cell_p=cell_p;
401 load_from_file(load_file,&display);
402 x_cell=display.max_x;
403 y_cell=display.max_y;
404 z_cell=display.max_z;
408 printfd("debug: init display now ...\n");
409 display_init(x_cell,y_cell,z_cell,&display,cell_p,&argc,argv);
413 /* did we load from file? */
414 if(!strcmp(load_file,""))
417 printfd("debug: starting main routine ...\n");
418 for(display.step=0;display.step<steps;display.step++)
422 z=rand_get_lgp(slope_nel,start_nel,z_cell);
424 /* distribute c concentration */
425 distrib_c_conc(cell_p,c_dist_c0,c_dist_slope,c_conc,x_cell,y_cell,z_cell);
427 process_cell(cell_p,x,y,z,x_cell,y_cell,z_cell,a_p_range,a_p_faktor,a_p_p0,&c_conc);
430 if((display.step%display_refresh_rate)==0)
431 display_draw(&display,display_x,display_y,display_z);
436 if(strcmp(save_file,"")) save_to_file(save_file,&display);
438 printfd("debug: main routine finished!\n");
440 /* display again and listen for events */
441 display_draw(&display,display_x,display_y,display_z);
442 display_event_init(&display);
446 display_scan_event(&display,&display_x,&display_y,&display_z,&quit);
447 display_draw(&display,display_x,display_y,display_z);
450 display_release(&display);