/* -*- 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;

    MPID_Win *win_ptr = NULL;

    int in_cs = FALSE;

    MPID_THREADPRIV_DECL;

    MPID_MPI_STATE_DECL(MPID_STATE_MPI_WIN_CALL_ERRHANDLER);

    MPIR_ERRTEST_INITIALIZED_ORDIE();

    MPID_MPI_FUNC_ENTER(MPID_STATE_MPI_WIN_CALL_ERRHANDLER);

    MPID_THREADPRIV_GET;

    /* 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 */

    MPID_Win_get_ptr( win, win_ptr );

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

#   ifdef HAVE_ERROR_CHECKING

    {

        MPID_BEGIN_ERROR_CHECKS;

        {

            /* Validate win_ptr */

            MPID_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 MPID_LANG_C:

	(*win_ptr->errhandler->errfn.C_Win_Handler_function)( 

	    &win_ptr->handle, &errorcode );

	break;

#ifdef HAVE_CXX_BINDING

    case MPID_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 MPID_LANG_FORTRAN90:

    case MPID_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));

    MPID_MPI_FUNC_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-- */

}