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#define _POSIX_C_SOURCE 200112L
#define _XOPEN_SOURCE 600
#include <stdio.h>
#include <stdlib.h>
#include <malloc.h>
#include <errno.h>
#include <sys/time.h>
#include <ctype.h>
#include <stdarg.h>
#include <math.h>
#include <pthread.h>
#include <stdint.h>
#include <string.h>
#include <limits.h>
#include <getopt.h>
#include "process.h"
extern int counter;
enum {
OPT_SLICE = 's',
OPT_HELP
};
static struct option long_options[] = {
{"help", no_argument, 0, OPT_HELP },
{"slice", required_argument, 0, OPT_SLICE },
{ 0, 0, 0, 0 }
};
static void Usage(int argc, char *argv[], const char *format, ...) {
if (format) {
va_list ap;
va_start(ap, format);
printf("Error %i: ", errno);
vprintf(format, ap);
printf("\n");
va_end(ap);
printf("\n");
}
printf(
"Usage:\n"
" %s [options]\n"
"\n"
"Options:\n"
" -s [slice] - slice number\n"
"\n\n",
argv[0]);
exit(0);
}
static int isnumber(const char *str) {
int i = 0;
for (i = 0; str[i]; i++)
if (!isdigit(str[i])) return 0;
return 1;
}
void main(int argc, char *argv[]) {
int n_threads = 1;
int alignment = 256;
long n_proj = 3600;
long n_elements = 2000;
float cor = 1060. / 16;
float d = 1060;
float detector_size = 400;
float pixel_size = 400. / 2000;
float cor_offset = 0;
float detector_offset_u = 0, detector_offset_v = 0, detector_offset_z = 0;
float source[] = {0, 0, 0};
float u_detector[] = {1, 0, 0};
float v_detector[] = {0, 1, 0};
float n_detector[] = {0, 0, 1};
float *out_volume, *projections, *slice_x, *slice_y, *slice_coord_z;
int err;
int i, j;
int tnum, m;
struct thread_info *t_info;
void *res;
struct timeval start, end;
long duration;
err = posix_memalign((void**)&out_volume, alignment, n_elements * n_elements * n_elements * sizeof(float));
if (!err) err = posix_memalign((void**)&projections, alignment, n_elements * n_elements * n_proj * sizeof(float));
if (!err) err = posix_memalign((void**)&slice_x, alignment, n_elements * n_elements * sizeof(float));
if (!err) err = posix_memalign((void**)&slice_y, alignment, n_elements * n_elements * sizeof(float));
if (!err) err = posix_memalign((void**)&slice_coord_z, alignment, n_elements * sizeof(float));
if (err) {
printf("Can not allocate memory");
exit(-1);
}
for (i = 0; i < n_elements; i++) {
slice_coord_z[i] = (pixel_size / 16) * ((i + 1) - (n_elements + 1.) / 2);
for (j = 0; j < n_elements; j++) {
slice_x[i * n_elements + j] = (pixel_size / 16) * ((i + 1) - (n_elements + 1.)/2);
slice_y[i * n_elements + j] = (pixel_size / 16) * ((n_elements - j) - (n_elements + 1.)/2);
}
}
/* allocate memory for threads */
t_info = (struct thread_info*) calloc(n_threads, sizeof(struct thread_info));
if (t_info == NULL)
{
printf("Structure t_info memory allocation error\n");
exit(-1);
}
/* fill tread_info structure and create threads */
counter = n_elements / 2;
unsigned char c;
while ((c = getopt_long(argc, argv, "s:", long_options, NULL)) != (unsigned char)-1) {
extern int optind;
switch (c) {
case OPT_HELP:
Usage(argc, argv, NULL);
break;
case OPT_SLICE:
if ((!isnumber(optarg))||(sscanf(optarg, "%i", &counter) != 1)||(counter < 0)||(counter >= n_elements)) {
Usage(argc, argv, "Invalid slice is specified (%s)", optarg);
}
break;
default:
Usage(argc, argv, "Unknown option (%s) with argument (%s)", optarg?argv[optind-2]:argv[optind-1], optarg?optarg:"(null)");
}
}
gettimeofday(&start, NULL);
for (tnum = 0; tnum < n_threads; tnum++)
{
t_info[tnum].thread_num = tnum; /* Application-defined thread # */
t_info[tnum].n_elements = n_elements;
t_info[tnum].n_proj = n_proj;
t_info[tnum].cor = cor;
t_info[tnum].d = d;
t_info[tnum].detector_size = detector_size;
t_info[tnum].pixel_size = pixel_size;
t_info[tnum].cor_offset = cor_offset;
t_info[tnum].detector_offset_u = detector_offset_u;
t_info[tnum].detector_offset_v = detector_offset_v;
t_info[tnum].detector_offset_z = detector_offset_z;
t_info[tnum].source = source;
t_info[tnum].u_detector = u_detector;
t_info[tnum].v_detector = v_detector;
t_info[tnum].n_detector = n_detector;
t_info[tnum].projections = projections;
t_info[tnum].slice_x = slice_x;
t_info[tnum].slice_y = slice_y;
t_info[tnum].slice_coord_z = slice_coord_z;
t_info[tnum].out_volume = out_volume;
t_info[tnum].slices_per_iter = n_elements;
if (n_threads > 1) {
m = pthread_create(&t_info[tnum].thread_id, NULL, &process, &t_info[tnum]);
if (m != 0)
{
printf("Cannot create thread with error %i\n", m);
exit(-1);
}
} else {
process(&t_info[tnum]);
}
}
if (n_threads > 1) {
/* join threads */
for (tnum = 0; tnum < n_threads; tnum++)
{
m = pthread_join(t_info[tnum].thread_id, &res);
if (m != 0)
{
printf("Cannot join threads with error %i\n", m);
exit(-1);
}
}
}
gettimeofday(&end, NULL);
duration = (end.tv_sec - start.tv_sec) * 1000000 + end.tv_usec - start.tv_usec;
printf("Time: %2u:%2u:%2u (%6u)\n", duration/3600000000, (duration%3600000000)/60000000, (duration%60000000)/1000000, (duration%1000000));
free(t_info);
free(slice_coord_z);
free(slice_y);
free(slice_x);
free(projections);
free(out_volume);
}
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