/**
* Shallow cloning of extended message, result is referencing the same data.
*/
static pmsg_t *
pmsg_clone_ext(pmsg_ext_t *mb)
{
pmsg_ext_t *nmb;
pmsg_ext_check_consistency(mb);
WALLOC(nmb);
*nmb = *mb; /* Struct copy */
nmb->pmsg.m_refcnt = 1;
pdata_addref(nmb->pmsg.m_data);
return cast_to_pmsg(nmb);
}
/**
* Shallow cloning of message, making sure we have a plain clone even if
* the original was extended.
*/
pmsg_t *
pmsg_clone_plain(const pmsg_t *mb)
{
pmsg_t *nmb;
pmsg_check_consistency(mb);
WALLOC(nmb);
memcpy(nmb, mb, sizeof *nmb);
nmb->magic = PMSG_MAGIC; /* Force plain message */
nmb->m_flags &= ~PMSG_PF_EXT; /* In case original was extended */
nmb->m_refcnt = 1;
pdata_addref(nmb->m_data);
return nmb;
}
/**
* Shallow cloning of message, result is referencing the same data.
*
* This is not the same thing as pmsg_ref() because here a new message block
* is created (albeit the data are shared with the original message).
*/
pmsg_t *
pmsg_clone(pmsg_t *mb)
{
if (pmsg_is_extended(mb)) {
return pmsg_clone_ext(cast_to_pmsg_ext(mb));
} else {
pmsg_t *nmb;
pmsg_check_consistency(mb);
WALLOC(nmb);
*nmb = *mb; /* Struct copy */
nmb->m_refcnt = 1;
pdata_addref(nmb->m_data);
return nmb;
}
}
/**
* Extended cloning of message, adds a free routine callback.
*/
pmsg_t *
pmsg_clone_extend(pmsg_t *mb, pmsg_free_t free_cb, void *arg)
{
pmsg_ext_t *nmb;
pmsg_check_consistency(mb);
WALLOC(nmb);
nmb->pmsg = *mb; /* Struct copy */
nmb->pmsg.magic = PMSG_EXT_MAGIC;
pdata_addref(nmb->pmsg.m_data);
nmb->pmsg.m_flags |= PMSG_PF_EXT;
nmb->pmsg.m_refcnt = 1;
nmb->m_free = free_cb;
nmb->m_arg = arg;
return cast_to_pmsg(nmb);
}
