C++ (Cpp) monitor_get_domcap_ownerの例

コード例 #1

ファイル: retrieve.c プロジェクト: achreto/barrelfish

void
capops_retrieve(struct domcapref cap,
                move_result_handler_t result_handler,
                void *st)
{
    errval_t err;

    distcap_state_t state;
    err = dom_cnode_get_state(cap, &state);
    GOTO_IF_ERR(err, report_error);
    if (distcap_state_is_busy(state)) {
        err = MON_ERR_REMOTE_CAP_RETRY;
    }
    if (distcap_state_is_foreign(state)) {
        err = MON_ERR_CAP_FOREIGN;
    }
    GOTO_IF_ERR(err, report_error);

    err = monitor_lock_cap(cap.croot, cap.cptr, cap.bits);
    GOTO_IF_ERR(err, report_error);

    struct retrieve_rpc_st *rst = NULL;
    err = calloce(1, sizeof(*rst), &rst);
    GOTO_IF_ERR(err, unlock_cap);

    rst->cap = cap;
    rst->result_handler = result_handler;
    rst->st = st;

    err = monitor_get_domcap_owner(cap, &rst->prev_owner);
    GOTO_IF_ERR(err, free_st);

    if (rst->prev_owner == my_core_id) {
        err = SYS_ERR_OK;
        goto free_st;
    }

    retrieve_owner__enq(rst);

    return;

free_st:
    free(rst);

unlock_cap:
    caplock_unlock(cap);

report_error:
    result_handler(err, st);
}

コード例 #2

ファイル: capsend.c プロジェクト: XuNazgul/cmpe295A

errval_t
capsend_owner(struct domcapref capref, struct msg_queue_elem *queue_elem)
{
    errval_t err;

    // read cap owner
    coreid_t owner;
    err = monitor_get_domcap_owner(capref, &owner);
    if (err_is_fail(err)) {
        return err;
    }

    // enqueue to owner
    return capsend_target(owner, queue_elem);
}