Function bthread_id_cancel

src/bthread/id.cpp:489–511

}

int bthread_id_cancel(bthread_id_t id) {
    bthread::Id* const meta = address_resource(bthread::get_slot(id));
    if (!meta) {
        return EINVAL;
    }
    uint32_t* butex = meta->butex;
    const uint32_t id_ver = bthread::get_version(id);
    meta->mutex.lock();
    if (!meta->has_version(id_ver)) {
        meta->mutex.unlock();
        return EINVAL;
    }
    if (*butex != meta->first_ver) {
        meta->mutex.unlock();
        return EPERM;
    }       
    *butex = meta->end_ver();
    meta->first_ver = *butex;
    meta->locked_ver = *butex;
    meta->mutex.unlock();
    return_resource(bthread::get_slot(id));
    return 0;
}

int bthread_id_join(bthread_id_t id) {
    const bthread::IdResourceId slot = bthread::get_slot(id);