/* -*- 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_Testall = PMPIO_Testall
#elif defined(HAVE_PRAGMA_HP_SEC_DEF)
#pragma _HP_SECONDARY_DEF PMPIO_Testall MPIO_Testall
#elif defined(HAVE_PRAGMA_CRI_DUP)
#pragma _CRI duplicate MPIO_Testall as PMPIO_Testall
/* 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_Testall(int count, MPIO_Request requests[], int *flag, MPI_Status statuses[])
{
    int done, i, err;

    ROMIO_THREAD_CS_ENTER();
    if (count == 1) {
        err = MPIO_Test(requests, flag, statuses);
        goto fn_exit;
    }

    /* This is actually very difficult to do.  We can't use MPIO_Test,
     * since we must change the requests only if *ALL* requests are complete
     */
    /* FIXME: THIS IS NOT CORRECT (see above).  But most applications won't
     * care */
    done = 1;
    for (i = 0; i < count; i++) {
        if (requests[i] != MPIO_REQUEST_NULL) {
            err = MPIO_Test(&requests[i], flag, &statuses[i]);
            if (!*flag)
                done = 0;
            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
        }
    }

    *flag = done;

    err = MPI_SUCCESS;
  fn_exit:
    ROMIO_THREAD_CS_EXIT();
    return err;
}
