static int async_ioloop_worker()
{
int status = 0;
while (mlist_len (s_waiters) && status >= 0)
{
ASSERT (mlist_len (s_pollfd_list) == mlist_len (s_pollfd_ptrs));
ASSERT (mlist_len (s_pollfd_list) == mlist_len (s_waiters));
int list_len = mlist_len (s_pollfd_list);
int nfds = poll (s_pollfd_list, list_len, -1);
if (nfds == -1 && errno == EINTR) continue;
if (nfds == -1) return -1;
size_t i, proc;
for (i = 0, proc = 0; i < list_len && proc < nfds; ++i)
{
if (s_pollfd_list[i].revents != 0)
{
*s_pollfd_ptrs[i] = s_pollfd_list[i];
int cont_status = async_run_stack (s_waiters[i], NULL);
if (cont_status < 0) status = -1;
++proc;
}
}
for (i = list_len; i --> 0; )
{
if (s_pollfd_list[i].revents != 0)
{
mlist_remove (s_pollfd_list, i);
mlist_remove (s_pollfd_ptrs, i);
mlist_remove (s_waiters, i);
}
}
}
return status;
}
/* Parse a single option. */
static int opts_parse_opt(const char *cmd,
int key, char *arg, struct opts *opts)
{
struct event event;
struct event *event_node;
memset(&event, 0, sizeof(event));
switch (key) {
case 'T':
_req_opt('T')->cnt++;
opts->htime = arg ? atoi(arg) : -1;
break;
case 'P':
_req_opt('T')->cnt++;
opts->ptime = arg ? atoi(arg) : -1;
break;
case 'c':
_req_opt('c')->cnt++;
strncpy(opts->ftrace_clock, arg, NAME_MAX);
break;
case 's':
_req_opt('s')->cnt++;
opts->ftrace_buffsz = arg ? atoi(arg) : -1;
break;
case 'v':
_req_opt('v')->cnt++;
if (arg[0] >= '0' && arg[0] <= '9')
*opts->loglevel = arg ? atoi(arg) : 0;
else {
int ok;
*opts->loglevel = str2loglevel(arg, &ok);
if (!ok)
LOGW("loglevel [%s] invalid. Falling back to default\n",
arg);
}
break;
case 'z':
_req_opt('z')->cnt++;
opts->daemon = 1;
break;
case 'm':
_req_opt('m')->cnt++;
strncpy(opts->debugfs_path, arg, PATH_MAX);
break;
case 'w':
_req_opt('w')->cnt++;
strncpy(opts->workdir, arg, PATH_MAX);
break;
case 'o':
_req_opt('o')->cnt++;
strncpy(opts->outfname, arg, PATH_MAX);
break;
case 'p':
_req_opt('p')->cnt++;
opts->pid = arg ? atoi(arg) : 0;
break;
case 't':
_req_opt('t')->cnt++;
opts->threads = 1;
break;
case 'e':
_req_opt('e')->cnt++;
strncpy(event.name, arg, PATH_MAX);
event.id = uq_eid++;
assert_np(mlist_add_last(etrace.event_list, &event));
break;
case 'f':
_req_opt('f')->cnt++;
assert_np(event_node = mdata_curr(etrace.event_list));
if (event_node->filter
&& strnlen(event_node->filter, FILTER_MAX) > 0) {
LOGE("Filer [%s] is overwritten by [%s] for event [%s] (#%d)",
event_node->filter, arg, event_node->name,
mlist_len(etrace.event_list));
LOGE("Check order for options -e and -f\n");
return E_OPT_USAGE;
}
event_node->filter = strndup(arg, FILTER_MAX);
break;
case 'i':
_req_opt('i')->cnt++;
opts->rid = arg ? atoi(arg) : 0;
break;
case 'u':
_req_opt('u')->cnt++;
opts_help(stdout, HELP_USAGE | HELP_EXIT);
break;
case 'h':
_req_opt('h')->cnt++;
opts_help(stdout, HELP_LONG | HELP_EXIT);
break;
case 'D':
_req_opt('D')->cnt++;
doc_print();
etrace_exit(0);
break;
case '?':
/* getopt_long already printed an error message. */
opts_help(stderr, HELP_TRY | HELP_EXIT_ERR);
break;
case ':':
/* getopt_long already printed an error message. */
fprintf(stderr, "%s: option `-%c' requires an argument\n",
cmd, optopt);
opts_help(stderr, HELP_TRY | HELP_EXIT_ERR);
break;
case 'V':
_req_opt('V')->cnt++;
opts_help(stdout, HELP_VERSION | HELP_EXIT);
break;
default:
fprintf(stderr, "etrace: unrecognized option '-%c'\n", (char)key);
opts_help(stderr, HELP_TRY | HELP_EXIT_ERR);
break;
}
return OPT_OK;
}
