/**
* main - tbus server entry point
*/
int main(int argc, char **argv)
{
int ret;
ret = tbus_init();
if (ret < 0)
exit(EXIT_FAILURE);
tbus_mainloop();
tbus_exit();
return 0;
}
int main(int argc, char**argv)
{
int opt;
const char *arg = NULL;
size_t size = 0;
size_t number = 0;
size_t shm_size = 0;
key_t shm_key = 0;
int shm_id = 0;
void *shm_ptr = NULL;
tbus_t *tbus_ptr = NULL;
char *endptr;
while((opt = getopt_long (argc, argv, short_options, long_options, NULL)) != -1)
{
switch(opt)
{
case 'h':
help();
exit(0);
case 'v':
version();
exit(0);
case 'd':
{
tbus_t *tb = NULL;
arg = optarg;
uint32_t head, tail, size;
errno = 0;
shm_key = (key_t)strtol(arg, &endptr, 10);
if(errno != 0)
{
fprintf(stderr, "strtol(\"%s\", &endptr, 10) returned an errno[%d], %s.\n", arg, errno, strerror(errno));
exit(1);
}
tb = tbus_at(shm_key);
if(tb == NULL)
{
fprintf(stderr, "tbus_at(%d) failed, errno(%d), %s.\n", shm_key, errno, strerror(errno));
goto error_free_memory;
}
head = tb->head_offset;
tail = tb->tail_offset;
if(head <= tail)
{
size = tail - head;
}
else
{
size = head - tail;
size = tb->size - size;
}
fprintf(stdout, "used : %u, total : %u, percent : %.2lf%%.\n", size, tb->size, (double)size * 100 / (double)tb->size);
exit(0);
}
case 's':
{
arg = optarg;
errno = 0;
size = (size_t)strtoull(arg, &endptr, 10);
if(errno != 0)
{
fprintf(stderr, "strtoull(\"%s\", &endptr, 10) returned an errno[%d], %s.\n", arg, errno , strerror(errno));
exit(1);
}
if(endptr == arg)
{
fprintf(stderr, "strtoull(\"%s\", &endptr, 10) return %zu, first invalid character[%c].\n", arg, size, *endptr);
exit(1);
}
break;
}
case 'n':
{
arg = optarg;
errno = 0;
number = (size_t)strtoull(arg, &endptr, 10);
if(errno != 0)
{
fprintf(stderr, "strtoull(\"%s\", &endptr, 10) returned an errno[%d], %s.\n", arg, errno , strerror(errno));
exit(1);
}
if(endptr == arg)
{
fprintf(stderr, "strtoull(\"%s\", &endptr, 10) return %zu, first invalid character[%c].\n", arg, number, *endptr);
exit(1);
}
break;
}
case 'w':
{
arg = optarg;
errno = 0;
shm_key = (key_t)strtol(arg, &endptr, 10);
if(errno != 0)
{
fprintf(stderr, "strtol(\"%s\", &endptr, 10) returned an errno[%d], %s.\n", arg, errno, strerror(errno));
exit(1);
}
if(endptr == arg)
{
fprintf(stderr, "strtoull(\"%s\", &endptr, 10) return %zu, first invalid character[%c].\n", arg, shm_size, *endptr);
exit(1);
}
shm_size = tbus_size(size, number);
errno = 0;
shm_id = shmget(shm_key, shm_size, 0664 | IPC_CREAT|IPC_EXCL);
if(shm_id == -1)
{
fprintf(stderr, "shmget(%d, %zu, IPC_CREAT|IPC_EXCL) returned an errno[%d], %s.\n", shm_key, shm_size, errno, strerror(errno));
exit(1);
}
shm_ptr = shmat(shm_id, NULL, 0);
if(shm_ptr == NULL)
{
fprintf(stderr, "shmat(%d, NULL, 0) returned an errno[%d], %s.\n", shm_id, errno, strerror(errno));
goto error_free_memory;
}
tbus_ptr = (tbus_t*)shm_ptr;
tbus_init(tbus_ptr, size, number);
fprintf(stdout, "tbus_init succeed, shm_key = [%d] shm_size = [%zu].\n", shm_key, shm_size);
return 0;
error_free_memory:
shmctl(shm_id, IPC_RMID, 0);
exit(1);
}
default:
{
fprintf(stderr, "Unrecognized option: \"%s\"\n", argv[optind]);
help();
exit(1);
}
}
}
fprintf(stderr, "Missing --write\n");
help();
return 1;
}
