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Review and update the documentation, making sure it’s complete, formatted in gi-docgen format, and has all appropriate GIR annotations and `Since:` lines. Signed-off-by: Philip Withnall <pwithnall@gnome.org> Helps: #3155
129 lines
4.7 KiB
C
129 lines
4.7 KiB
C
/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*-
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* GObject introspection: Helper functions for ffi integration
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*
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* Copyright (C) 2008 Red Hat, Inc
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*
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* SPDX-License-Identifier: LGPL-2.1-or-later
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#pragma once
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#if !defined (__GIREPOSITORY_H_INSIDE__) && !defined (GI_COMPILATION)
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#error "Only <girepository.h> can be included directly."
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#endif
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#include <ffi.h>
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#include "girepository.h"
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G_BEGIN_DECLS
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/**
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* GIFFIClosureCallback:
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* @cif: the `ffi_cif` passed to
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* [method@GIRepository.CallableInfo.create_closure]
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* @ret: (out caller-allocates): a pointer to the memory used for the function’s
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* return value
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* @args: a vector of pointers to memory holding the arguments to the function
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* @user_data: the user data passed to
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* [method@GIRepository.CallableInfo.create_closure]
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*
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* The function which will be called when a closure created with
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* [method@GIRepository.CallableInfo.create_closure] is invoked.
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*
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* The value of @ret is undefined if the function returns `void`.
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*
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* Since: 2.80
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*/
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typedef void (*GIFFIClosureCallback) (ffi_cif *cif,
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void *ret,
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void **args,
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void *user_data);
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/**
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* GIFunctionInvoker:
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* @cif: the cif
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* @native_address: the native address
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*
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* Structure containing the data necessary to invoke a callable function.
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*
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* Since: 2.80
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*/
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typedef struct {
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ffi_cif cif;
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gpointer native_address;
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/*< private >*/
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gpointer padding[3];
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} GIFunctionInvoker;
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/**
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* GIFFIReturnValue:
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*
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* The type of a return value from a callable invocation closure.
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*
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* Since: 2.80
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*/
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typedef GIArgument GIFFIReturnValue;
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GI_AVAILABLE_IN_ALL
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ffi_type * gi_type_tag_get_ffi_type (GITypeTag type_tag, gboolean is_pointer);
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GI_AVAILABLE_IN_ALL
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ffi_type * gi_type_info_get_ffi_type (GITypeInfo *info);
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GI_AVAILABLE_IN_ALL
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void gi_type_info_extract_ffi_return_value (GITypeInfo *return_info,
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GIFFIReturnValue *ffi_value,
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GIArgument *arg);
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GI_AVAILABLE_IN_ALL
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void gi_type_tag_extract_ffi_return_value (GITypeTag return_tag,
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GIInfoType interface_type,
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GIFFIReturnValue *ffi_value,
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GIArgument *arg);
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GI_AVAILABLE_IN_ALL
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gboolean gi_function_info_prep_invoker (GIFunctionInfo *info,
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GIFunctionInvoker *invoker,
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GError **error);
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GI_AVAILABLE_IN_ALL
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gboolean gi_function_invoker_new_for_address (gpointer addr,
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GICallableInfo *info,
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GIFunctionInvoker *invoker,
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GError **error);
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GI_AVAILABLE_IN_ALL
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void gi_function_invoker_destroy (GIFunctionInvoker *invoker);
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GI_AVAILABLE_IN_ALL
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ffi_closure * gi_callable_info_create_closure (GICallableInfo *callable_info,
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ffi_cif *cif,
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GIFFIClosureCallback callback,
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gpointer user_data);
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GI_AVAILABLE_IN_ALL
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gpointer * gi_callable_info_get_closure_native_address (GICallableInfo *callable_info,
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ffi_closure *closure);
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GI_AVAILABLE_IN_ALL
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void gi_callable_info_destroy_closure (GICallableInfo *callable_info,
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ffi_closure *closure);
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G_END_DECLS
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