/* -*- 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_Initialized */

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Initialized = PMPI_Initialized

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Initialized  MPI_Initialized

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Initialized as PMPI_Initialized

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Initialized(int *flag) __attribute__ ((weak, alias("PMPI_Initialized")));

#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_Initialized

#define MPI_Initialized PMPI_Initialized

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Initialized

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

/*@

   MPI_Initialized - Indicates whether 'MPI_Init' has been called.

Output Parameters:

. flag - Flag is true if 'MPI_Init' or 'MPI_Init_thread' has been called and

         false otherwise.

   Notes:

.N Fortran

.N Errors

.N MPI_SUCCESS

@*/

int MPI_Initialized(int *flag)

{

    int mpi_errno = MPI_SUCCESS;

    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_INITIALIZED);

    MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_INITIALIZED);

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            /* Should check that flag is not null */

            if (flag == NULL) {

                mpi_errno = MPI_ERR_ARG;

                goto fn_fail;

            }

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

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

    *flag = (OPA_load_int(&MPIR_Process.mpich_state) >= MPICH_MPI_STATE__POST_INIT);

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

#ifdef HAVE_ERROR_CHECKING

  fn_exit:

#endif

    MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_INITIALIZED);

    return mpi_errno;

    /* --BEGIN ERROR HANDLING-- */

#ifdef HAVE_ERROR_CHECKING

  fn_fail:

    if (OPA_load_int(&MPIR_Process.mpich_state) == MPICH_MPI_STATE__IN_INIT ||

        OPA_load_int(&MPIR_Process.mpich_state) == MPICH_MPI_STATE__POST_INIT) {

        {

            mpi_errno = MPIR_Err_create_code(mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__,

                                             MPI_ERR_OTHER, "**mpi_initialized",

                                             "**mpi_initialized %p", flag);

        }

        mpi_errno = MPIR_Err_return_comm(0, FCNAME, mpi_errno);

    }

    goto fn_exit;

#endif

    /* --END ERROR HANDLING-- */

}