85 строки
1.8 KiB
C
85 строки
1.8 KiB
C
/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
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/*
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*
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* Copyright (C) 2003 University of Chicago.
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* See COPYRIGHT notice in top-level directory.
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*/
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#include "mpioimpl.h"
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#ifdef HAVE_WEAK_SYMBOLS
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#if defined(HAVE_PRAGMA_WEAK)
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#pragma weak MPIO_Waitany = PMPIO_Waitany
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#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
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#pragma _HP_SECONDARY_DEF PMPIO_Waitany MPIO_Waitany
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#elif defined(HAVE_PRAGMA_CRI_DUP)
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#pragma _CRI duplicate MPIO_Waitany as PMPIO_Waitany
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/* end of weak pragmas */
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#endif
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/* Include mapping from MPI->PMPI */
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#define MPIO_BUILD_PROFILING
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#include "mpioprof.h"
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#endif
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/*
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This is a temporary function until we switch to using MPI-2's generalized
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requests.
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*/
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int MPIO_Waitany(int count, MPIO_Request requests[], int *index,
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MPI_Status *status)
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{
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int i, flag, err;
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MPIU_THREADPRIV_DECL;
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MPIU_THREAD_CS_ENTER(ALLFUNC,);
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if (count == 1) {
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err = MPIO_Wait( requests, status );
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if (!err) *index = 0;
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goto fn_exit;
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}
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/* Check for no active requests */
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for (i=0; i<count; i++) {
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if (requests[i] != MPIO_REQUEST_NULL) {
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break;
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}
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}
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if (i == count) {
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*index = MPI_UNDEFINED;
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#ifdef MPICH
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/* need to set empty status */
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if (status != MPI_STATUS_IGNORE) {
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status->MPI_SOURCE = MPI_ANY_SOURCE;
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status->MPI_TAG = MPI_ANY_TAG;
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MPIR_STATUS_SET_COUNT(*status, 0);
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MPIR_STATUS_SET_CANCEL_BIT(*status, 0);
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}
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#endif
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err = MPI_SUCCESS;
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goto fn_exit;
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}
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err = MPI_SUCCESS;
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do {
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flag = 0;
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for (i=0; i<count; i++) {
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if (requests[i] != MPIO_REQUEST_NULL) {
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err = MPIO_Test( &requests[i], &flag, status );
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if (flag) {
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if (!err) *index = i;
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break;
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}
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}
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}
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} while (flag == 0);
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fn_exit:
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MPIU_THREAD_CS_EXIT(ALLFUNC,);
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return err;
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}
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