// test overwritten data with bfreef()
int main() {
static char sarr[SARRSIZ];
char *sarr_ptr = __ptralign(sarr,HSIZE) + HSIZE; // new pointer
char *str = mallocf(STRSIZ);
int i;
strncpy(str, "This is a test.", STRSIZ);
str[STRSIZ-1] = '\0';
strncpy(sarr, "This is data from a static array.", SARRSIZ);
sarr[SARRSIZ-1] = '\0';
printf("str = %s\n", str);
printf("sarr position = %p (%s)\n", sarr,
(unsigned long)sarr%HSIZE ? "unaligned" : "aligned");
printf("sarr = %s\n", sarr);
bfreef(sarr, SARRSIZ);
freef(str);
printf("sarr = %s\n", sarr);
printf("sarr_ptr position = %p\n", sarr_ptr);
printf("sarr =\n");
for (i=0; i<SARRSIZ; ++i)
printf("0x%02x%c", (unsigned char) sarr[i],
(i+1)*5%80 ?' ' : '\n');
while (str != sarr_ptr) // assumption is that sarr size % 16 == 0
str = mallocf(SARRSIZ-HSIZE); // egregious memory leak
printf("found str = sarr_ptr\n");
strncpy(str, "This is data that overwrites static data.",
SARRSIZ-HSIZE);
str[SARRSIZ-HSIZE-1] = '\0';
printf("str = %s\n", str);
printf("sarr =\n");
for (i=0; i<SARRSIZ; ++i)
printf("0x%02x%c", (unsigned char) sarr[i],
(i+1)*5%80 ?' ' : '\n');
freef(str);
return 0;
}
int
main(void) {
int width = 2560;
int height = 1440;
int i;
int frames = 200;
char fpath[100];
char **grid;
/* init */
grid = allocf(width, height);
double scale = 50.0;
double offset = 1.0;
double offset2 = 1.0;
double offset3 = 1.0;
double offset4 = 1.0;
for (i = 0; i < frames; i++) {
snprintf(fpath, 100, "plt_pbm_%05d.pbm", i);
FILE *pbmf = fopen(fpath, "w");
clearf(grid, width, height);
draw_sin(grid, width, height, scale, offset);
draw_cos(grid, width, height, scale, offset2);
draw_sin(grid, width, height, scale, offset3);
draw_cos(grid, width, height, scale, offset4);
offset += 0.09;
offset2 += 0.11;
offset3 += 0.13;
offset4 += 0.16;
pbmgrid(grid, width, height, pbmf);
fclose(pbmf);
fprintf(stderr, "i: %d\n", i);
}
/* clean up */
freef(grid, width);
return 0;
}
void hash_free(hashp h, void (*freef)( ))
{
hashindex *o, *f;
int i;
for (i = 0; i < 27; i++) {
o = h->list[i];
while(o != NULL) {
f = o;
o = o->next;
free(f->data);
if(freef != NULL)
freef(f->info);
free(f);
}
h->list[i] = NULL;
}
}
