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

/*

 *  (C) 2011 by Argonne National Laboratory.

 *      See COPYRIGHT in top-level directory.

 */

#include "mpiimpl.h"

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

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_T_cvar_get_num = PMPI_T_cvar_get_num

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_T_cvar_get_num  MPI_T_cvar_get_num

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_T_cvar_get_num as PMPI_T_cvar_get_num

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_T_cvar_get_num(int *num_cvar) __attribute__((weak,alias("PMPI_T_cvar_get_num")));

#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_T_cvar_get_num

#define MPI_T_cvar_get_num PMPI_T_cvar_get_num

#endif /* MPICH_MPI_FROM_PMPI */

#undef FUNCNAME

#define FUNCNAME MPI_T_cvar_get_num

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

/*@

MPI_T_cvar_get_num - Get the number of control variables

Output Parameters:

. num_cvar - returns number of control variables (integer)

.N ThreadSafe

.N Errors

.N MPI_SUCCESS

.N MPI_T_ERR_NOT_INITIALIZED

@*/

int MPI_T_cvar_get_num(int *num_cvar)

{

    int mpi_errno = MPI_SUCCESS;

    MPID_MPI_STATE_DECL(MPID_STATE_MPI_T_CVAR_GET_NUM);

    MPIR_ERRTEST_MPIT_INITIALIZED(mpi_errno);

    MPIR_T_THREAD_CS_ENTER();

    MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_T_CVAR_GET_NUM);

    /* Validate parameters */

#   ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS

        {

            MPIR_ERRTEST_ARGNULL(num_cvar, "num_cvar", mpi_errno);

        }

        MPID_END_ERROR_CHECKS

    }

#   endif /* HAVE_ERROR_CHECKING */

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

    *num_cvar = utarray_len(cvar_table);

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

fn_exit:

    MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_T_CVAR_GET_NUM);

    MPIR_T_THREAD_CS_EXIT();

    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_t_cvar_get_num", "**mpi_t_cvar_get_num %p", num_cvar);

    }

#   endif

    mpi_errno = MPIR_Err_return_comm(NULL, FCNAME, mpi_errno);

    goto fn_exit;

    /* --END ERROR HANDLING-- */

}