40 lines
806 B
C
40 lines
806 B
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/stat.h>
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#include "util.h"
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/* read file named FILENAME into an array of *len bytes,
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returning NULL on error */
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uint8_t *readfile(const char *filename, size_t *len)
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{
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*len = 0;
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struct stat st;
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if (0 != stat(filename, &st)) return NULL;
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*len = st.st_size;
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FILE *f = fopen(filename, "r");
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if (!f) return NULL;
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uint8_t *s = (uint8_t *) malloc(sizeof(uint8_t) * *len);
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if (!s) return NULL;
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if (fread(s, 1, *len, f) != *len) {
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free(s);
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s = NULL;
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}
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fclose(f);
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return s;
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}
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mytime gettime(void) {
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mytime t;
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gettimeofday(&t, NULL);
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return t;
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}
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/* time difference in seconds */
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double elapsed(mytime t1, mytime t0)
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{
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return (double)(t1.tv_sec - t0.tv_sec) +
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(double)(t1.tv_usec - t0.tv_usec) * 1.0E-6;
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}
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