/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
 *
 *   Copyright (C) 2003 University of Chicago.
 *   See COPYRIGHT notice in top-level directory.
 */

#include "mpioimpl.h"

#ifdef HAVE_WEAK_SYMBOLS

#if defined(HAVE_PRAGMA_WEAK)
#pragma weak MPIO_Waitall = PMPIO_Waitall
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPIO_Waitall MPIO_Waitall
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPIO_Waitall as PMPIO_Waitall
/* end of weak pragmas */
#endif

/* Include mapping from MPI->PMPI */
#define MPIO_BUILD_PROFILING
#include "mpioprof.h"
#endif

/*
  This is a temporary function until we switch to using MPI-2's generalized
  requests.
*/

int MPIO_Waitall(int count, MPIO_Request requests[], MPI_Status statuses[])
{
    int notdone, i, flag, err;

    ROMIO_THREAD_CS_ENTER();

    if (count == 1) {
        err = MPIO_Wait(requests, statuses);
        goto fn_exit;
    }


    do {
        notdone = 0;
        for (i = 0; i < count; i++) {
            if (requests[i] != MPIO_REQUEST_NULL) {
                err = MPIO_Test(&requests[i], &flag, &statuses[i]);
                if (!flag)
                    notdone = 1;
                if (err)
                    goto fn_exit;
            } else {
#ifdef MPICH
                /* need to set empty status */
                if (statuses != MPI_STATUSES_IGNORE) {
                    statuses[i].MPI_SOURCE = MPI_ANY_SOURCE;
                    statuses[i].MPI_TAG = MPI_ANY_TAG;
                    MPIR_STATUS_SET_COUNT(statuses[i], 0);
                    MPIR_STATUS_SET_CANCEL_BIT(statuses[i], 0);
                }
#else
                ;
#endif
            }
        }
    } while (notdone);

    err = MPI_SUCCESS;
  fn_exit:

    ROMIO_THREAD_CS_EXIT();
    return err;
}