static STATUS xsem_delete(struct wind_sem *sem)
{
struct syncstate syns;
struct service svc;
int ret = OK;
if (threadobj_irq_p())
return S_intLib_NOT_ISR_CALLABLE;
CANCEL_DEFER(svc);
if (syncobj_lock(&sem->u.xsem.sobj, &syns)) {
ret = S_objLib_OBJ_ID_ERROR;
goto out;
}
sem->magic = ~sem_magic; /* Prevent further reference. */
syncobj_destroy(&sem->u.xsem.sobj, &syns);
out:
CANCEL_RESTORE(svc);
return ret;
}
/**
* @fn int rt_buffer_delete(RT_BUFFER *bf)
* @brief Delete an IPC buffer.
*
* This routine deletes a buffer object previously created by a call
* to rt_buffer_create().
*
* @param bf The descriptor address of the deleted buffer.
*
* @return Zero is returned upon success. Otherwise:
*
* - -EINVAL is returned if @a bf is not a valid buffer descriptor.
*
* - -EPERM is returned if this service was called from an
* asynchronous context.
*
* Valid calling context:
*
* - Regular POSIX threads
* - Xenomai threads
*/
int rt_buffer_delete(RT_BUFFER *bf)
{
struct alchemy_buffer *bcb;
struct syncstate syns;
struct service svc;
int ret = 0;
if (threadobj_irq_p())
return -EPERM;
CANCEL_DEFER(svc);
bcb = get_alchemy_buffer(bf, &syns, &ret);
if (bcb == NULL)
goto out;
syncluster_delobj(&alchemy_buffer_table, &bcb->cobj);
bcb->magic = ~buffer_magic;
syncobj_destroy(&bcb->sobj, &syns);
out:
CANCEL_RESTORE(svc);
return ret;
}