// Initialize the buffer-cache in a shared memory block
buffcach *bc_ini() {
int i, j;
// avoid debugging file on init
dbm = 0;
// ensure key files existence
close(creat(_SHMKEYPATH_BC_, 0666));
close(creat(_SEMKEYPATH_BC_, 0666));
// allocate buffer-cache in shared memory
bc = (buffcach *)shmalloc(&bcshmid, _SHMKEY_BC_, _SIZE_BC_, 1);
// initialize free list
bc->header.freestart = 0;
bc->header.freeend = MAXBUFF - 1;
// initialize hash list
for (i = 0; i < MAXHASH; i++)
bc->header.hash[i] = -1;
// initialize slept list
for (i = 0; i < MAXSLPT; i++)
bc->header.slept[i] = -1;
// initialize buffers and link free list nodes
for (i = 0; i < MAXBUFF; i++) {
BS_CLR(bc->buffers[i].status, BS_LOCKED);
BS_CLR(bc->buffers[i].status, BS_VALID);
BS_CLR(bc->buffers[i].status, BS_DELAYED);
if (i > 0)
bc->buffers[i].freeprev = i - 1;
if (i < MAXBUFF - 1)
bc->buffers[i].freenext = i + 1;
bc->buffers[i].hashnext = -1;
for (j = 0; j < MAXSLPT; j++)
bc->buffers[i].slept[j] = -1;
}
bc->buffers[0].freeprev = -1;
bc->buffers[MAXBUFF - 1].freenext = -1;
// initialize mutex semaphore
semid = semInit(_SEMKEY_BC_, (short)1);
// initialize files table
ft_ini();
// return initialized buffer-cache structure
return bc;
}
int main(int argc, char **argv)
{
t_en e;
if (argc != 2)
ft_putendl("error");
if (argc != 2)
return (0);
ft_ini(&e);
ft_parse(argv[1], &e);
draw(&e);
// mlx_put_image_to_window(e.mlx, e.win_para, e.img_para, 0, 0);
mlx_hook(e.win_para, 2, 3, key, &e);
mlx_hook(e.win_iso, 2, 3, key, &e);
mlx_loop_hook(e.mlx, (void *)draw, &e);
mlx_loop(e.mlx);
return (0);
}
