/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */

/*

 *

 *  (C) 2001 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include "mpiimpl.h"

/* -- Begin Profiling Symbol Block for routine MPI_Test */

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Test = PMPI_Test

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Test  MPI_Test

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Test as PMPI_Test

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Test(MPI_Request * request, int *flag, MPI_Status * status)

    __attribute__ ((weak, alias("PMPI_Test")));

#endif

/* -- End Profiling Symbol Block */

/* Define MPICH_MPI_FROM_PMPI if weak symbols are not supported to build

   the MPI routines */

#ifndef MPICH_MPI_FROM_PMPI

#undef MPI_Test

#define MPI_Test PMPI_Test

#undef FUNCNAME

#define FUNCNAME MPIR_Test_impl

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

int MPIR_Test_impl(MPIR_Request * request_ptr, int *flag, MPI_Status * status)

{

    int mpi_errno = MPI_SUCCESS;

    mpi_errno = MPID_Progress_test();

    if (mpi_errno)

        MPIR_ERR_POP(mpi_errno);

    if (MPIR_Request_has_poll_fn(request_ptr)) {

        mpi_errno = MPIR_Grequest_poll(request_ptr, status);

        if (mpi_errno)

            MPIR_ERR_POP(mpi_errno);

    }

    if (MPIR_Request_is_complete(request_ptr))

        *flag = TRUE;

    else

        *flag = FALSE;

  fn_exit:

    return mpi_errno;

  fn_fail:

    goto fn_exit;

}

#undef FUNCNAME

#define FUNCNAME MPIR_Test

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

int MPIR_Test(MPI_Request * request, int *flag, MPI_Status * status)

{

    int mpi_errno = MPI_SUCCESS;

    int active_flag;

    MPIR_Request *request_ptr = NULL;

    /* If this is a null request handle, then return an empty status */

    if (*request == MPI_REQUEST_NULL) {

        MPIR_Status_set_empty(status);

        *flag = TRUE;

        goto fn_exit;

    }

    MPIR_Request_get_ptr(*request, request_ptr);

    MPIR_Assert(request_ptr != NULL);

    mpi_errno = MPID_Test(request_ptr, flag, status);

    if (mpi_errno)

        MPIR_ERR_POP(mpi_errno);

    if (*flag) {

        mpi_errno = MPIR_Request_completion_processing(request_ptr, status, &active_flag);

        if (!MPIR_Request_is_persistent(request_ptr)) {

            MPIR_Request_free(request_ptr);

            *request = MPI_REQUEST_NULL;

        }

        if (mpi_errno)

            MPIR_ERR_POP(mpi_errno);

        /* Fall through to the exit */

    } else if (unlikely(MPIR_Request_is_anysrc_mismatched(request_ptr))) {

        MPIR_ERR_SET(mpi_errno, MPIX_ERR_PROC_FAILED_PENDING, "**failure_pending");

        if (status != MPI_STATUS_IGNORE)

            status->MPI_ERROR = mpi_errno;

        goto fn_fail;

    }

  fn_exit:

    return mpi_errno;

  fn_fail:

    goto fn_exit;

}

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Test

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

/*@

    MPI_Test  - Tests for the completion of a request

Input Parameters:

. request - MPI request (handle)

Output Parameters:

+ flag - true if operation completed (logical)

- status - status object (Status).  May be 'MPI_STATUS_IGNORE'.

.N ThreadSafe

.N waitstatus

.N Fortran

.N FortranStatus

.N Errors

.N MPI_SUCCESS

.N MPI_ERR_REQUEST

.N MPI_ERR_ARG

@*/

int MPI_Test(MPI_Request * request, int *flag, MPI_Status * status)

{

    int mpi_errno = MPI_SUCCESS;

    MPIR_Request *request_ptr = NULL;

    MPIR_Comm *comm_ptr = NULL;

    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_TEST);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPID_THREAD_CS_ENTER(VNI_GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    MPIR_FUNC_TERSE_REQUEST_ENTER(MPID_STATE_MPI_TEST);

    /* Validate parameters, especially handles needing to be converted */

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            MPIR_ERRTEST_ARGNULL(request, "request", mpi_errno);

            MPIR_ERRTEST_REQUEST_OR_NULL(*request, mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

    MPIR_Request_get_ptr(*request, request_ptr);

    /* Validate parameters and objects (post conversion) */

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            if (*request != MPI_REQUEST_NULL) {

                /* Validate request_ptr */

                MPIR_Request_valid_ptr(request_ptr, mpi_errno);

                if (mpi_errno)

                    goto fn_fail;

            }

            MPIR_ERRTEST_ARGNULL(flag, "flag", mpi_errno);

            /* NOTE: MPI_STATUS_IGNORE != NULL */

            MPIR_ERRTEST_ARGNULL(status, "status", mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

    /* ... body of routine ...  */

    /* MPIR_Test may free request_ptr, so make a copy of comm_ptr before calling MPIR_Test.

     * comm_ptr will be used later at fn_fail when MPIR_Test returns an error. */

    if (request_ptr)

        comm_ptr = request_ptr->comm;

    mpi_errno = MPIR_Test(request, flag, status);

    if (mpi_errno)

        goto fn_fail;

    /* ... end of body of routine ... */

  fn_exit:

    MPIR_FUNC_TERSE_REQUEST_EXIT(MPID_STATE_MPI_TEST);

    MPID_THREAD_CS_EXIT(VNI_GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    return mpi_errno;

  fn_fail:

    /* --BEGIN ERROR HANDLING-- */

#ifdef HAVE_ERROR_CHECKING

    {

        mpi_errno =

            MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,

                                 "**mpi_test", "**mpi_test %p %p %p", request, flag, status);

    }

#endif

    mpi_errno = MPIR_Err_return_comm(comm_ptr, FCNAME, mpi_errno);

    goto fn_exit;

    /* --END ERROR HANDLING-- */

}