/**
* parse_events - parse a perf style string with events
* @el: List of events allocated earlier
* @events: Comma separated lists of events. {} style groups are legal.
*
* JSON events are supported, if the event lists are downloaded first.
*/
int parse_events(struct eventlist *el, char *events)
{
char *s, *tmp;
events = strdup(events);
if (! events) return -1;
for (s = strtok_r(events, ",", &tmp);
s;
s = strtok_r(NULL, ",", &tmp)) {
bool group_leader = false, end_group = false;
int len;
if (s[0] == '{') {
s++;
group_leader = true;
} else if (len = strlen(s), len > 0 && s[len - 1] == '}') {
s[len - 1] = 0;
end_group = true;
}
struct event *e = new_event(el, s);
e->group_leader = group_leader;
e->end_group = end_group;
if (resolve_event(s, &e->attr) < 0) {
fprintf(stderr, "Cannot resolve %s\n", e->event);
return -1;
}
}
free(events);
return 0;
}
int main(int ac, char **av)
{
int test = 0;
int ret = 0;
while (*++av) {
if (!strcmp(*av, "--test")) {
test = 1;
continue;
}
struct perf_event_attr attr;
if (resolve_event(*av, &attr) < 0) {
fprintf(stderr, "Cannot resolve %s\n", *av);
ret = 1;
continue;
}
char *ev = format_raw_event(&attr, *av);
printf("%s\n", ev);
free(ev);
if (test) {
if (syscall(__NR_perf_event_open, &attr, 0, -1, -1, 0) < 0)
perror("perf_event_open");
}
}
return ret;
}
