/* -*- 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_Win_call_errhandler */

#if defined(HAVE_PRAGMA_WEAK)

#pragma weak MPI_Win_call_errhandler = PMPI_Win_call_errhandler

#elif defined(HAVE_PRAGMA_HP_SEC_DEF)

#pragma _HP_SECONDARY_DEF PMPI_Win_call_errhandler  MPI_Win_call_errhandler

#elif defined(HAVE_PRAGMA_CRI_DUP)

#pragma _CRI duplicate MPI_Win_call_errhandler as PMPI_Win_call_errhandler

#elif defined(HAVE_WEAK_ATTRIBUTE)

int MPI_Win_call_errhandler(MPI_Win win, int errorcode)

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

#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_call_errhandler

#define MPI_Win_call_errhandler PMPI_Win_call_errhandler

#endif

#undef FUNCNAME

#define FUNCNAME MPI_Win_call_errhandler

#undef FCNAME

#define FCNAME "MPI_Win_call_errhander"

/*@

   MPI_Win_call_errhandler - Call the error handler installed on a

   window object

Input Parameters:

+ win - window with error handler (handle)

- errorcode - error code (integer)

 Note:

 Assuming the input parameters are valid, when the error handler is set to

 MPI_ERRORS_RETURN, this routine will always return MPI_SUCCESS.

.N ThreadSafeNoUpdate

.N Fortran

.N Errors

.N MPI_SUCCESS

.N MPI_ERR_WIN

@*/

int MPI_Win_call_errhandler(MPI_Win win, int errorcode)

{

    int mpi_errno = MPI_SUCCESS;

    MPIR_Win *win_ptr = NULL;

    int in_cs = FALSE;

    MPIR_FUNC_TERSE_STATE_DECL(MPID_STATE_MPI_WIN_CALL_ERRHANDLER);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPIR_FUNC_TERSE_ENTER(MPID_STATE_MPI_WIN_CALL_ERRHANDLER);

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

#ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            MPIR_ERRTEST_WIN(win, mpi_errno);

        }

        MPID_END_ERROR_CHECKS;

    }

#endif

    /* Convert MPI object handles to object pointers */

    MPIR_Win_get_ptr(win, win_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 */

            if (mpi_errno)

                goto fn_fail;

        }

        MPID_END_ERROR_CHECKS;

    }

#endif /* HAVE_ERROR_CHECKING */

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

    MPID_THREAD_CS_ENTER(POBJ, MPIR_THREAD_POBJ_WIN_MUTEX(win_ptr));

    in_cs = TRUE;

    if (!win_ptr->errhandler || win_ptr->errhandler->handle == MPI_ERRORS_ARE_FATAL) {

        mpi_errno = MPIR_Err_return_win(win_ptr, "MPI_Win_call_errhandler", errorcode);

        goto fn_exit;

    }

    if (win_ptr->errhandler->handle == MPI_ERRORS_RETURN) {

        /* MPI_ERRORS_RETURN should always return MPI_SUCCESS */

        goto fn_exit;

    }

    /* Check for the special case of errors-throw-exception.  In this case

     * return the error code; the C++ wrapper will cause an exception to

     * be thrown.

     */

#ifdef HAVE_CXX_BINDING

    if (win_ptr->errhandler->handle == MPIR_ERRORS_THROW_EXCEPTIONS) {

        mpi_errno = errorcode;

        goto fn_exit;

    }

#endif

    switch (win_ptr->errhandler->language) {

        case MPIR_LANG__C:

            (*win_ptr->errhandler->errfn.C_Win_Handler_function) (&win_ptr->handle, &errorcode);

            break;

#ifdef HAVE_CXX_BINDING

        case MPIR_LANG__CXX:

            MPIR_Process.cxx_call_errfn(2, &win_ptr->handle,

                                        &errorcode,

                                        (void (*)(void)) win_ptr->errhandler->

                                        errfn.C_Win_Handler_function);

            break;

#endif

#ifdef HAVE_FORTRAN_BINDING

        case MPIR_LANG__FORTRAN90:

        case MPIR_LANG__FORTRAN:

            {

                /* If int and MPI_Fint aren't the same size, we need to

                 * convert.  As this is not performance critical, we

                 * do this even if MPI_Fint and int are the same size. */

                MPI_Fint ferr = errorcode;

                MPI_Fint winhandle = win_ptr->handle;

                (*win_ptr->errhandler->errfn.F77_Handler_function) (&winhandle, &ferr);

            }

            break;

#endif

    }

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

  fn_exit:

    if (in_cs)

        MPID_THREAD_CS_EXIT(POBJ, MPIR_THREAD_POBJ_WIN_MUTEX(win_ptr));

    MPIR_FUNC_TERSE_EXIT(MPID_STATE_MPI_WIN_CALL_ERRHANDLER);

    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_call_errhandler", "**mpi_win_call_errhandler %W %d",

                                 win, errorcode);

    }

    mpi_errno = MPIR_Err_return_win(win_ptr, FCNAME, mpi_errno);

    goto fn_exit;

#endif

    /* --END ERROR HANDLING-- */

}