Function get_task_group

src/bthread/butex.cpp:293–295

if tag is same return tls_task_group else choose one group with tag

// if tag is same return tls_task_group else choose one group with tag
inline TaskGroup* get_task_group(TaskControl* c, bthread_tag_t tag) {
    return is_same_tag(tag) ? tls_task_group : c->choose_one_group(tag);
}

inline void run_in_local_task_group(TaskGroup* g, TaskMeta* next_meta, bool nosignal) {
    if (!nosignal) {