common/mdesc/mdesc_getproparcs.c

a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire/*
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a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire *
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a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire *
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a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire */
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire/*
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * Use is subject to license terms.
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire */
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire#pragma ident   "%Z%%M% %I% %E% SMI"
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire#include <sys/types.h>
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen#include <sys/mdesc.h>
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire#include <sys/mdesc_impl.h>
f4b3ec61df05330d25f55a36b975b4d7519fdeb1dh
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguirestatic int md_find_node_arcs(md_impl_t *, mde_cookie_t, mde_str_cookie_t, int,
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen    mde_cookie_t *, size_t);
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen/*
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * Return an array containing the node indexes for the arcs in
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * the given node.  The array is allocated using the allocator
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * defined at machine description initialization time and the
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * number of arcs found returned.
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen *
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * Input        Description
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * -------------------  ----------------------------------------
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * md_t *       Pointer to md session
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * mde_cookie_t     Node containing arcs
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * char *       Arc name to count (e.g. "fwd" or "back")
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * mde_cookie_t *   Buffer to store indexes, or NULL
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * size_t       Size of buffer
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen *
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * Output       Description
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * -------------------  ----------------------------------------
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen * int          Count of arcs in node
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen */
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyenint
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyenmd_get_prop_arcs(md_t *ptr, mde_cookie_t node, char *namep, mde_cookie_t *arcp,
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen    size_t arcsize)
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen{
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen    int      result;
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen    mde_str_cookie_t prop_name;
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen    md_impl_t   *mdp;
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen    mdp = (md_impl_t *)ptr;
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen    if (node == MDE_INVAL_ELEM_COOKIE) {
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen        return (-1);
eb1a34638eba7c5add1421327f3eb225a8ea7518Truong Nguyen    }
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    prop_name = md_find_name(ptr, namep);
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    if (prop_name == MDE_INVAL_STR_COOKIE) {
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire        return (-1);
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    }
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    result = md_find_node_arcs(mdp, node, prop_name, MDET_PROP_ARC, arcp,
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire        arcsize);
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    return (result);
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire}
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire/*
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire * Find the number of arcs in the node of the requested prop_name.  If storage
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire * is given in arcp, store the first arcsize number of node indexes.
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire */
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguirestatic int
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguiremd_find_node_arcs(md_impl_t *mdp, mde_cookie_t node,
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    mde_str_cookie_t prop_name, int tag_type, mde_cookie_t *arcp,
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    size_t arcsize)
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire{
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    int     result;
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    md_element_t    *mdep;
794ca8fa32f239770e58f592fc80eceff7ec92f0amaguire    int     idx;
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
794ca8fa32f239770e58f592fc80eceff7ec92f0amaguire    /* Get the private node information from session data */
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    idx = (int)node;
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    mdep = &(mdp->mdep[idx]);
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    /* Make sure the cookie is in fact a node */
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    if (MDE_TAG(mdep) != MDET_NODE) {
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire        return (-1);
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    }
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    /*
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire     * Walk the elements in the node and find all the arcs of the
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire     * requested type, and store them in an array.
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire     */
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    result = 0;
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    for (idx++, mdep++; MDE_TAG(mdep) != MDET_NODE_END; idx++, mdep++) {
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire        if ((MDE_TAG(mdep) == tag_type) &&
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire            (MDE_NAME(mdep) == prop_name)) {
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire            if (arcp != NULL && result < arcsize) {
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire                arcp[result] =
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire                    (mde_cookie_t)MDE_PROP_INDEX(mdep);
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire            }
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire            /* Increment the count of arcs found */
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire            result++;
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire        }
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    }
794ca8fa32f239770e58f592fc80eceff7ec92f0amaguire
794ca8fa32f239770e58f592fc80eceff7ec92f0amaguire    /* Return the total count of arcs in the node */
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire    return (result);
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire}
a192e900f6d2b0e1a822e3252c0dfd795ed49d76amaguire