/* -*- 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_set_attr */

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Win_set_attr = PMPI_Win_set_attr

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Win_set_attr  MPI_Win_set_attr

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Win_set_attr as PMPI_Win_set_attr

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Win_set_attr(MPI_Win win, int win_keyval, void *attribute_val)

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

#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_set_attr

#define MPI_Win_set_attr PMPI_Win_set_attr

#undef FUNCNAME

#define FUNCNAME MPII_Win_set_attr

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

int MPII_Win_set_attr(MPI_Win win, int win_keyval, void *attribute_val, MPIR_Attr_type attrType)

{

    int mpi_errno = MPI_SUCCESS;

    MPIR_Win *win_ptr = NULL;

    MPII_Keyval *keyval_ptr = NULL;

    MPIR_Attribute *p, **old_p;

    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPIR_WIN_SET_ATTR);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    /* The thread lock prevents a valid attr delete on the same window

     * but in a different thread from causing problems */

    MPID_THREAD_CS_ENTER(GLOBAL, MPIR_THREAD_GLOBAL_ALLFUNC_MUTEX);

    MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPIR_WIN_SET_ATTR);

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

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            MPIR_ERRTEST_WIN(win, mpi_errno);

            MPIR_ERRTEST_KEYVAL(win_keyval, MPIR_WIN, "window", mpi_errno);

            MPIR_ERRTEST_KEYVAL_PERM(win_keyval, mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#endif

    /* Convert MPI object handles to object pointers */

    MPIR_Win_get_ptr(win, win_ptr);

    MPII_Keyval_get_ptr(win_keyval, keyval_ptr);

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

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            /* Validate win_ptr */

            MPIR_Win_valid_ptr(win_ptr, mpi_errno);

            /* If win_ptr is not valid, it will be reset to null */

            /* Validate keyval */

            MPII_Keyval_valid_ptr(keyval_ptr, mpi_errno);

            if (mpi_errno)

                goto fn_fail;

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

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

    /* Look for attribute.  They are ordered by keyval handle.  This uses

     * a simple linear list algorithm because few applications use more than a

     * handful of attributes */

    old_p = &win_ptr->attributes;

    p = win_ptr->attributes;

    while (p) {

        if (p->keyval->handle == keyval_ptr->handle) {

            /* If found, call the delete function before replacing the

             * attribute */

            mpi_errno = MPIR_Call_attr_delete(win, p);

            /* --BEGIN ERROR HANDLING-- */

            if (mpi_errno) {

                /* FIXME : communicator of window? */

                goto fn_fail;

            }

            /* --END ERROR HANDLING-- */

            p->value = (MPII_Attr_val_t) (intptr_t) attribute_val;

            p->attrType = attrType;

            /* Does not change the reference count on the keyval */

            break;

        } else if (p->keyval->handle > keyval_ptr->handle) {

            MPIR_Attribute *new_p = MPID_Attr_alloc();

            MPIR_ERR_CHKANDJUMP1(!new_p, mpi_errno, MPI_ERR_OTHER,

                                 "**nomem", "**nomem %s", "MPIR_Attribute");

            new_p->keyval = keyval_ptr;

            new_p->attrType = attrType;

            new_p->pre_sentinal = 0;

            new_p->value = (MPII_Attr_val_t) (intptr_t) attribute_val;

            new_p->post_sentinal = 0;

            new_p->next = p->next;

            MPII_Keyval_add_ref(keyval_ptr);

            p->next = new_p;

            break;

        }

        old_p = &p->next;

        p = p->next;

    }

    if (!p) {

        MPIR_Attribute *new_p = MPID_Attr_alloc();

        MPIR_ERR_CHKANDJUMP1(!new_p, mpi_errno, MPI_ERR_OTHER,

                             "**nomem", "**nomem %s", "MPIR_Attribute");

        /* Did not find in list.  Add at end */

        new_p->attrType = attrType;

        new_p->keyval = keyval_ptr;

        new_p->pre_sentinal = 0;

        new_p->value = (MPII_Attr_val_t) (intptr_t) attribute_val;

        new_p->post_sentinal = 0;

        new_p->next = 0;

        MPII_Keyval_add_ref(keyval_ptr);

        *old_p = new_p;

    }

    /* Here is where we could add a hook for the device to detect attribute

     * value changes, using something like

     * MPID_Win_attr_hook(win_ptr, keyval, attribute_val);

     */

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

  fn_exit:

    MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPIR_WIN_SET_ATTR);

    MPID_THREAD_CS_EXIT(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_win_set_attr", "**mpi_win_set_attr %W %d %p", win,

                                 win_keyval, attribute_val);

    }

#endif

    mpi_errno = MPIR_Err_return_win(win_ptr, FCNAME, mpi_errno);

    goto fn_exit;

    /* --END ERROR HANDLING-- */

}

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Win_set_attr

#undef FCNAME

#define FCNAME MPL_QUOTE(FUNCNAME)

/*@

   MPI_Win_set_attr - Stores attribute value associated with a key

Input Parameters:

+ win - MPI window object to which attribute will be attached (handle)

. win_keyval - key value, as returned by  'MPI_Win_create_keyval' (integer)

- attribute_val - attribute value

Notes:

The type of the attribute value depends on whether C or Fortran is being used.

In C, an attribute value is a pointer ('void *'); in Fortran, it is an

address-sized integer.

If an attribute is already present, the delete function (specified when the

corresponding keyval was created) will be called.

.N ThreadSafe

.N Fortran

.N Errors

.N MPI_SUCCESS

.N MPI_ERR_WIN

.N MPI_ERR_KEYVAL

@*/

int MPI_Win_set_attr(MPI_Win win, int win_keyval, void *attribute_val)

{

    int mpi_errno = MPI_SUCCESS;

    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_WIN_SET_ATTR);

    MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_WIN_SET_ATTR);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

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

    mpi_errno = MPII_Win_set_attr(win, win_keyval, attribute_val, MPIR_ATTR_PTR);

    if (mpi_errno)

        goto fn_fail;

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

  fn_exit:

    MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_WIN_SET_ATTR);

    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_win_set_attr", "**mpi_win_set_attr %W %d %p", win,

                                 win_keyval, attribute_val);

    }

#endif

    goto fn_exit;

    /* --END ERROR HANDLING-- */

}