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/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil -*- */
/*
* Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
* University Research and Technology
* Corporation. All rights reserved.
* Copyright (c) 2004-2007 The University of Tennessee and The University
* of Tennessee Research Foundation. All rights
* reserved.
* Copyright (c) 2004-2005 High Performance Computing Center Stuttgart,
* University of Stuttgart. All rights reserved.
* Copyright (c) 2004-2005 The Regents of the University of California.
* All rights reserved.
* Copyright (c) 2006-2012 Cisco Systems, Inc. All rights reserved.
* Copyright (c) 2009 Sun Microsystems, Inc. All rights reserved.
* Copyright (c) 2013-2015 Los Alamos National Security, LLC. All rights
* reserved.
* $COPYRIGHT$
*
* Additional copyrights may follow
*
* $HEADER$
*/
#ifndef OMPI_WIN_H
#define OMPI_WIN_H
#include "ompi_config.h"
#include "mpi.h"
#include "opal/class/opal_object.h"
#include "opal/class/opal_hash_table.h"
#include "ompi/errhandler/errhandler.h"
#include "ompi/info/info.h"
#include "ompi/communicator/communicator.h"
#include "ompi/group/group.h"
#include "ompi/mca/osc/osc.h"
BEGIN_C_DECLS
/* flags */
#define OMPI_WIN_FREED 0x00000001
#define OMPI_WIN_INVALID 0x00000002
#define OMPI_WIN_NO_LOCKS 0x00000004
#define OMPI_WIN_SAME_DISP 0x00000008
#define OMPI_WIN_SAME_SIZE 0x00000010
enum ompi_win_accumulate_ops_t {
OMPI_WIN_ACCUMULATE_OPS_SAME_OP_NO_OP,
OMPI_WIN_ACCUMULATE_OPS_SAME_OP,
};
typedef enum ompi_win_accumulate_ops_t ompi_win_accumulate_ops_t;
OMPI_DECLSPEC extern mca_base_var_enum_t *ompi_win_accumulate_ops;
OMPI_DECLSPEC extern opal_pointer_array_t ompi_mpi_windows;
struct ompi_win_t {
opal_object_t w_base;
opal_mutex_t w_lock;
char w_name[MPI_MAX_OBJECT_NAME];
/* Group associated with this window. */
ompi_group_t *w_group;
/* Information about the state of the window. */
uint16_t w_flags;
/** Window flavor */
uint16_t w_flavor;
/** Accumulate ops */
ompi_win_accumulate_ops_t w_acc_ops;
/* Attributes */
opal_hash_table_t *w_keyhash;
/* index in Fortran <-> C translation array */
int w_f_to_c_index;
/* Error handling. This field does not have the "w_" prefix so
that the OMPI_ERRHDL_* macros can find it, regardless of
whether it's a comm, window, or file. */
ompi_errhandler_t *error_handler;
ompi_errhandler_type_t errhandler_type;
/* one sided interface */
ompi_osc_base_module_t *w_osc_module;
};
typedef struct ompi_win_t ompi_win_t;
OMPI_DECLSPEC OBJ_CLASS_DECLARATION(ompi_win_t);
/**
* Padded struct to maintain back compatibiltiy.
* See ompi/communicator/communicator.h comments with struct ompi_communicator_t
* for full explanation why we chose the following padding construct for predefines.
*/
#define PREDEFINED_WIN_PAD (sizeof(void*) * 64)
struct ompi_predefined_win_t {
struct ompi_win_t win;
char padding[PREDEFINED_WIN_PAD - sizeof(ompi_win_t)];
};
typedef struct ompi_predefined_win_t ompi_predefined_win_t;
OMPI_DECLSPEC extern ompi_predefined_win_t ompi_mpi_win_null;
OMPI_DECLSPEC extern ompi_predefined_win_t *ompi_mpi_win_null_addr;
int ompi_win_init(void);
int ompi_win_finalize(void);
int ompi_win_create(void *base, size_t size, int disp_unit,
ompi_communicator_t *comm, ompi_info_t *info,
ompi_win_t **newwin);
int ompi_win_allocate(size_t size, int disp_unit, ompi_info_t *info,
ompi_communicator_t *comm, void *baseptr, ompi_win_t **newwin);
int ompi_win_allocate_shared(size_t size, int disp_unit, ompi_info_t *info,
ompi_communicator_t *comm, void *baseptr, ompi_win_t **newwin);
int ompi_win_create_dynamic(ompi_info_t *info, ompi_communicator_t *comm, ompi_win_t **newwin);
int ompi_win_free(ompi_win_t *win);
OMPI_DECLSPEC int ompi_win_set_name(ompi_win_t *win, const char *win_name);
OMPI_DECLSPEC int ompi_win_get_name(ompi_win_t *win, char *win_name, int *length);
OMPI_DECLSPEC int ompi_win_group(ompi_win_t *win, ompi_group_t **group);
/* Note that the defintion of an "invalid" window is closely related
to the defintion of an "invalid" communicator. See a big comment
in ompi/communicator/communicator.h about this. */
static inline int ompi_win_invalid(ompi_win_t *win) {
if (NULL == win ||
MPI_WIN_NULL == win ||
(OMPI_WIN_INVALID & win->w_flags) ||
(OMPI_WIN_FREED & win->w_flags)) {
return true;
} else {
return false;
}
}
static inline int ompi_win_peer_invalid(ompi_win_t *win, int peer) {
if (win->w_group->grp_proc_count <= peer) return true;
return false;
}
static inline int ompi_win_rank(ompi_win_t *win) {
return win->w_group->grp_my_rank;
}
static inline bool ompi_win_allow_locks(ompi_win_t *win) {
return (0 == (win->w_flags & OMPI_WIN_NO_LOCKS));
}
END_C_DECLS
#endif
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