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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: testsome.c,v 6.6 2002/12/11 19:15:14 jsquyres Exp $
*
* Function: - check if at least one request completed
* - return info on all completed requests
* Accepts: - # of requests
* - array of requests
* - output count (out)
* - array of indices (out)
* - array of status structures (out)
* Returns: - MPI_SUCCESS or error code
*/
#include <blktype.h>
#include <mpi.h>
#include <mpisys.h>
#include <mpitrace.h>
#include <rpisys.h>
/*@
MPI_Testsome - Tests for some given communications to complete
Input Parameters:
+ count - length of array_of_requests (integer)
- reqs - array of requests (array of handles)
Output Parameters:
+ outcount - number of completed requests (integer)
. indices - array of indices of operations that
completed (array of integers)
- stats - array of status objects for operations that completed (array
of Status), or the MPI constant 'MPI_STATUSES_IGNORE'
.N waitstatus
.N fortran
.N Errors
.N MPI_SUCCESS
.N MPI_ERR_COUNT
.N MPI_ERR_ARG
.N MPI_ERR_IN_STATUS
.N ACK
@*/
int MPI_Testsome(int count, MPI_Request *reqs,
int *outcount, int *indices, MPI_Status *stats)
{
int i; /* favourite index */
int fl_done; /* request done flag */
int fl_err; /* error flag */
int err; /* error code */
int fl_trace; /* do tracing? */
MPI_Status *p; /* ptr status */
lam_initerr_m();
lam_setfunc_m(BLKMPITESTSOME);
/*
* Check the arguments.
*/
if (count < 0) {
return(lam_errfunc(MPI_COMM_WORLD, BLKMPITESTSOME,
lam_mkerr(MPI_ERR_COUNT, EINVAL)));
}
if ((count > 0) && ((reqs == 0) || (indices == 0))) {
return(lam_errfunc(MPI_COMM_WORLD, BLKMPITESTSOME,
lam_mkerr(MPI_ERR_ARG, EINVAL)));
}
if (outcount == 0) {
return(lam_errfunc(MPI_COMM_WORLD, BLKMPITESTSOME,
lam_mkerr(MPI_ERR_ARG, EINVAL)));
}
/*
* Generate a start wrapper trace.
*/
fl_trace = ((_kio.ki_rtf & RTF_TRON) == RTF_TRON);
if (fl_trace) {
lam_tr_wrapstart(BLKMPITESTSOME);
}
/*
* Initialize all status members.
*/
if (stats != MPI_STATUSES_IGNORE) {
for (i = 0, p = stats; i < count; ++i, ++p) {
lam_emptystat(p);
}
}
/*
* Loop testing all requests.
* Skip inactive requests.
*/
*outcount = MPI_UNDEFINED;
fl_err = 0;
for (i = 0; i < count; ++i, ++reqs) {
if ((*reqs == MPI_REQUEST_NULL) ||
((*reqs)->rq_state == LAM_RQSINIT)) continue;
if (*outcount == MPI_UNDEFINED) {
*outcount = 0;
}
err = MPI_Test(reqs, &fl_done, stats);
if ((err != MPI_SUCCESS) || fl_done) {
++(*outcount);
*indices++ = i;
if (err != MPI_SUCCESS) {
if (stats != MPI_STATUSES_IGNORE) {
stats->MPI_ERROR = err;
}
fl_err = 1;
}
if (stats != MPI_STATUSES_IGNORE) {
++stats;
}
}
}
/*
* Generate an end wrapper trace.
*/
if (fl_trace) {
lam_tr_wrapend(BLKMPITESTSOME);
}
if (fl_err) {
return(lam_errfunc(MPI_COMM_WORLD, BLKMPITESTSOME,
lam_mkerr(MPI_ERR_IN_STATUS, EINVAL)));
}
lam_resetfunc_m(BLKMPITESTSOME);
return(MPI_SUCCESS);
}
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