/* -*- 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"

#include "attr.h"

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

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Win_free_keyval = PMPI_Win_free_keyval

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Win_free_keyval  MPI_Win_free_keyval

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Win_free_keyval as PMPI_Win_free_keyval

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Win_free_keyval(int *win_keyval) __attribute__((weak,alias("PMPI_Win_free_keyval")));

#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_Win_free_keyval

#define MPI_Win_free_keyval PMPI_Win_free_keyval

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Win_free_keyval

/*@

   MPI_Win_free_keyval - Frees an attribute key for MPI RMA windows

Input Parameters:

. win_keyval - key value (integer) 

.N ThreadSafe

.N Fortran

.N Errors

.N MPI_SUCCESS

.N MPI_ERR_WIN

.N MPI_ERR_OTHER

.N MPI_ERR_KEYVAL

@*/

int MPI_Win_free_keyval(int *win_keyval)

{

#ifdef HAVE_ERROR_CHECKING

    static const char FCNAME[] = "MPI_Win_free_keyval";

#endif

    int mpi_errno = MPI_SUCCESS;

    MPID_Keyval *keyval_ptr = NULL;

    int          in_use;

    MPID_MPI_STATE_DECL(MPID_STATE_MPI_WIN_FREE_KEYVAL);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_WIN_FREE_KEYVAL);

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

#   ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

	    MPIR_ERRTEST_ARGNULL(*win_keyval, "win_keyval", mpi_errno);

	    MPIR_ERRTEST_KEYVAL(*win_keyval, MPID_WIN, "window", mpi_errno);

	    MPIR_ERRTEST_KEYVAL_PERM(*win_keyval, mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#   endif

    /* Convert MPI object handles to object pointers */

    MPID_Keyval_get_ptr( *win_keyval, keyval_ptr );

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

#   ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

	    MPID_Keyval_valid_ptr( keyval_ptr, mpi_errno );

            if (mpi_errno) goto fn_fail;

        }

        MPID_END_ERROR_CHECKS;

    }

#   endif /* HAVE_ERROR_CHECKING */

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

    if (!keyval_ptr->was_freed) {

        keyval_ptr->was_freed = 1;

        MPIR_Keyval_release_ref( keyval_ptr, &in_use);

        if (!in_use) {

            MPIU_Handle_obj_free( &MPID_Keyval_mem, keyval_ptr );

        }

    }

    *win_keyval = MPI_KEYVAL_INVALID;

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

#ifdef HAVE_ERROR_CHECKING

  fn_exit:

#endif

    MPID_MPI_FUNC_EXIT(MPID_STATE_MPI_WIN_FREE_KEYVAL);

    MPID_THREAD_CS_EXIT(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    return mpi_errno;

    /* --BEGIN ERROR HANDLING-- */

#   ifdef HAVE_ERROR_CHECKING

  fn_fail:

    {

	mpi_errno = MPIR_Err_create_code(

	    mpi_errno, MPIR_ERR_RECOVERABLE, FCNAME, __LINE__, MPI_ERR_OTHER,

	    "**mpi_win_free_keyval", 

	    "**mpi_win_free_keyval %p", win_keyval);

    }

    mpi_errno = MPIR_Err_return_comm( NULL, FCNAME, mpi_errno );

    goto fn_exit;

#   endif

    /* --END ERROR HANDLING-- */

}