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/*
* Copyright (c) 2001-2002 The Trustees of Indiana University.
* All rights reserved.
* Copyright (c) 1998-2001 University of Notre Dame.
* All rights reserved.
* Copyright (c) 1994-1998 The Ohio State University.
* All rights reserved.
*
* This file is part of the LAM/MPI software package. For license
* information, see the LICENSE file in the top level directory of the
* LAM/MPI source distribution.
*
* $HEADER$
*
* $Id: getnodes.c,v 6.9 2002/12/12 22:55:38 jsquyres Exp $
*
* Function: - multiple node route matching
*/
#include <lam_config.h>
#include <etc_misc.h>
#include <events.h>
#include <net.h>
#include <rreq.h>
#include <typical.h>
#include <errno.h>
#include <unistd.h>
/*
* getnodes
*
* Function: - gets matching node IDs from local router
* Accepts: - node array
* - # array elements
* - node type
* - node type mask
* Returns: - 0 or ERROR
*/
int
getnodes(int4 *pnodes, int4 nnodes, int4 nodetype, int4 typemask)
{
struct rreq *request; /* router request */
struct rreply *reply; /* router reply */
struct nmsg nhreq; /* request message */
struct nmsg nhreply; /* reply message */
LAM_ZERO_ME(nhreq);
LAM_ZERO_ME(nhreply);
/*
* Set up the router request.
*/
request = (struct rreq *) nhreq.nh_data;
request->rq_src_event = -lam_getpid();
request->rq_request = RQGETNODES;
request->rq_pid = lam_getpid(); /* for sa_rtr */
request->rq_nodetype = nodetype;
request->rq_typemask = typemask;
nhreq.nh_dl_event = EVROUTER;
nhreq.nh_node = LOCAL;
nhreq.nh_event = EVROUTER;
nhreq.nh_type = RSMART;
nhreq.nh_flags = 0;
nhreq.nh_length = 0;
nhreq.nh_msg = 0;
nhreply.nh_event = -lam_getpid();
nhreply.nh_type = 0;
nhreply.nh_flags = 0;
nhreply.nh_length = nnodes * sizeof(int);
nhreply.nh_msg = (char *) pnodes;
if (dsfr(&nhreq, &nhreply)) {
return(ERROR);
}
reply = (struct rreply *) nhreply.nh_data;
if (reply->rr_reply) {
errno = reply->rr_reply;
return(ERROR);
} else {
return(0);
}
}
/*
* getntype
*
* Returns: - # of nodes with types satisfying the
* given type in all bits that are set
* in the given mask
* Accepts: - nodetype bitfield value
* - nodetype bitfield mask
*/
int4
getntype(int4 node_type, int4 type_mask)
{
struct rreq *request; /* router request */
struct rreply *reply; /* router reply */
struct nmsg nhreq; /* request message */
struct nmsg nhreply; /* reply message */
LAM_ZERO_ME(nhreq);
LAM_ZERO_ME(nhreply);
/*
* Set up the router request.
*/
request = (struct rreq *) nhreq.nh_data;
request->rq_src_event = -lam_getpid();
request->rq_request = RQGETNTYPE;
request->rq_nodetype = node_type;
request->rq_typemask = type_mask;
nhreq.nh_dl_event = EVROUTER;
nhreq.nh_node = LOCAL;
nhreq.nh_event = EVROUTER;
nhreq.nh_type = RSMART;
nhreq.nh_flags = 0;
nhreq.nh_length = 0;
nhreq.nh_msg = 0;
nhreply.nh_event = -lam_getpid();
nhreply.nh_type = 0;
nhreply.nh_flags = 0;
nhreply.nh_length = 0;
nhreply.nh_msg = 0;
if (dsfr(&nhreq, &nhreply)) {
return(ERROR);
}
reply = (struct rreply *) nhreply.nh_data;
if (reply->rr_reply) {
errno = reply->rr_reply;
return(ERROR);
} else {
return(reply->rr_ntype);
}
}
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