Exemplos de lnet_res_lock_current em C++ (Cpp)

Exemplo n.º 1

Arquivo: lib-md.c Projeto: asmalldev/linux

/**
 * Create a "free floating" memory descriptor - a MD that is not associated
 * with a ME. Such MDs are usually used in LNetPut() and LNetGet() operations.
 *
 * \param umd,unlink See the discussion for LNetMDAttach().
 * \param handle On successful returns, a handle to the newly created MD is
 * saved here. This handle can be used later in LNetMDUnlink(), LNetPut(),
 * and LNetGet() operations.
 *
 * \retval 0       On success.
 * \retval -EINVAL If \a umd is not valid.
 * \retval -ENOMEM If new MD cannot be allocated.
 * \retval -ENOENT \a umd.eq_handle does not point to a valid EQ. Note that
 * it's OK to supply a NULL \a umd.eq_handle by calling
 * LNetInvalidateHandle() on it.
 */
int
LNetMDBind(struct lnet_md umd, enum lnet_unlink unlink,
	   struct lnet_handle_md *handle)
{
	struct lnet_libmd *md;
	int cpt;
	int rc;

	LASSERT(the_lnet.ln_refcount > 0);

	if (lnet_md_validate(&umd))
		return -EINVAL;

	if ((umd.options & (LNET_MD_OP_GET | LNET_MD_OP_PUT))) {
		CERROR("Invalid option: GET|PUT illegal on active MDs\n");
		return -EINVAL;
	}

	md = lnet_md_alloc(&umd);
	if (!md)
		return -ENOMEM;

	rc = lnet_md_build(md, &umd, unlink);
	if (rc)
		goto out_free;

	cpt = lnet_res_lock_current();

	rc = lnet_md_link(md, umd.eq_handle, cpt);
	if (rc)
		goto out_unlock;

	lnet_md2handle(handle, md);

	lnet_res_unlock(cpt);
	return 0;

out_unlock:
	lnet_res_unlock(cpt);
out_free:
	lnet_md_free(md);

	return rc;
}

Exemplo n.º 2

Arquivo: lib-md.c Projeto: ORNL-TechInt/lustre

/**
 * Create a "free floating" memory descriptor - a MD that is not associated
 * with a ME. Such MDs are usually used in LNetPut() and LNetGet() operations.
 *
 * \param umd,unlink See the discussion for LNetMDAttach().
 * \param handle On successful returns, a handle to the newly created MD is
 * saved here. This handle can be used later in LNetMDUnlink(), LNetPut(),
 * and LNetGet() operations.
 *
 * \retval 0       On success.
 * \retval -EINVAL If \a umd is not valid.
 * \retval -ENOMEM If new MD cannot be allocated.
 * \retval -ENOENT \a umd.eq_handle does not point to a valid EQ. Note that
 * it's OK to supply a NULL \a umd.eq_handle by calling
 * LNetInvalidateHandle() on it.
 */
int
LNetMDBind(lnet_md_t umd, lnet_unlink_t unlink, lnet_handle_md_t *handle)
{
	lnet_libmd_t	*md;
	int		cpt;
	int		rc;

        LASSERT (the_lnet.ln_init);
        LASSERT (the_lnet.ln_refcount > 0);

        if (lnet_md_validate(&umd) != 0)
                return -EINVAL;

        if ((umd.options & (LNET_MD_OP_GET | LNET_MD_OP_PUT)) != 0) {
                CERROR("Invalid option: GET|PUT illegal on active MDs\n");
                return -EINVAL;
        }

        md = lnet_md_alloc(&umd);
        if (md == NULL)
                return -ENOMEM;

	rc = lnet_md_build(md, &umd, unlink);

	cpt = lnet_res_lock_current();
	if (rc != 0)
		goto failed;

	rc = lnet_md_link(md, umd.eq_handle, cpt);
	if (rc != 0)
		goto failed;

	lnet_md2handle(handle, md);

	lnet_res_unlock(cpt);
	return 0;

 failed:
	lnet_md_free_locked(md);

	lnet_res_unlock(cpt);
	return rc;
}