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/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
* GObject introspection: Helper functions for ffi integration
*
* Copyright (C) 2008 Red Hat, Inc
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 02111-1307, USA.
*/
#pragma once
#if !defined (__GIREPOSITORY_H_INSIDE__) && !defined (GI_COMPILATION)
#error "Only <girepository.h> can be included directly."
#endif
#include <ffi.h>
#include "girepository.h"
G_BEGIN_DECLS
/**
* GIFFIClosureCallback:
* @cif: the `ffi_cif` passed to
* [method@GIRepository.CallableInfo.create_closure]
* @ret: (out caller-allocates): a pointer to the memory used for the function’s
* return value
* @args: a vector of pointers to memory holding the arguments to the function
* @user_data: the user data passed to
* [method@GIRepository.CallableInfo.create_closure]
*
* The function which will be called when a closure created with
* [method@GIRepository.CallableInfo.create_closure] is invoked.
*
* The value of @ret is undefined if the function returns `void`.
*
* Since: 2.80
*/
typedef void (*GIFFIClosureCallback) (ffi_cif *cif,
void *ret,
void **args,
void *user_data);
/**
* GIFunctionInvoker:
* @cif: the cif
* @native_address: the native address
*
* Structure containing the data necessary to invoke a callable function.
*
* Since: 2.80
*/
typedef struct {
ffi_cif cif;
void *native_address;
/*< private >*/
void *padding[3];
} GIFunctionInvoker;
/**
* GIFFIReturnValue:
*
* The type of a return value from a callable invocation closure.
*
* Since: 2.80
*/
typedef GIArgument GIFFIReturnValue;
GI_AVAILABLE_IN_ALL
ffi_type * gi_type_tag_get_ffi_type (GITypeTag type_tag, gboolean is_pointer);
GI_AVAILABLE_IN_ALL
ffi_type * gi_type_info_get_ffi_type (GITypeInfo *info);
GI_AVAILABLE_IN_ALL
void gi_type_info_extract_ffi_return_value (GITypeInfo *return_info,
GIFFIReturnValue *ffi_value,
GIArgument *arg);
GI_AVAILABLE_IN_ALL
void gi_type_tag_extract_ffi_return_value (GITypeTag return_tag,
GType interface_type,
GIFFIReturnValue *ffi_value,
GIArgument *arg);
GI_AVAILABLE_IN_ALL
gboolean gi_function_info_prep_invoker (GIFunctionInfo *info,
GIFunctionInvoker *invoker,
GError **error);
GI_AVAILABLE_IN_ALL
gboolean gi_function_invoker_new_for_address (void *addr,
GICallableInfo *info,
GIFunctionInvoker *invoker,
GError **error);
GI_AVAILABLE_IN_ALL
void gi_function_invoker_clear (GIFunctionInvoker *invoker);
G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC (GIFunctionInvoker, gi_function_invoker_clear)
GI_AVAILABLE_IN_ALL
ffi_closure * gi_callable_info_create_closure (GICallableInfo *callable_info,
ffi_cif *cif,
GIFFIClosureCallback callback,
void *user_data);
GI_AVAILABLE_IN_ALL
void ** gi_callable_info_get_closure_native_address (GICallableInfo *callable_info,
ffi_closure *closure);
GI_AVAILABLE_IN_ALL
void gi_callable_info_destroy_closure (GICallableInfo *callable_info,
ffi_closure *closure);
G_END_DECLS
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