girffi

Synopsis

void                (*GIFFIClosureCallback)             (ffi_cif *Param1,
                                                         void *Param2,
                                                         void **Param3,
                                                         void *Param4);
struct              GIFunctionInvoker;
void                gi_cclosure_marshal_generic         (GClosure *closure,
                                                         GValue *return_gvalue,
                                                         guint n_param_values,
                                                         const GValue *param_values,
                                                         gpointer invocation_hint,
                                                         gpointer marshal_data);
ffi_type *          g_type_info_get_ffi_type            (GITypeInfo *info);
gboolean            g_function_info_prep_invoker        (GIFunctionInfo *info,
                                                         GIFunctionInvoker *invoker,
                                                         GError **error);
void                g_function_invoker_destroy          (GIFunctionInvoker *invoker);
ffi_closure *       g_callable_info_prepare_closure     (GICallableInfo *callable_info,
                                                         ffi_cif *cif,
                                                         GIFFIClosureCallback callback,
                                                         gpointer user_data);
void                g_callable_info_free_closure        (GICallableInfo *callable_info,
                                                         ffi_closure *closure);

Description

Details

GIFFIClosureCallback ()

void                (*GIFFIClosureCallback)             (ffi_cif *Param1,
                                                         void *Param2,
                                                         void **Param3,
                                                         void *Param4);

`Param1` :
`Param2` :
`Param3` :
`Param4` :

struct GIFunctionInvoker

struct GIFunctionInvoker {
  ffi_cif cif;
  gpointer native_address;
};

ffi_cif `cif`;	the cif
gpointer `native_address`;	the native adress

gi_cclosure_marshal_generic ()

void                gi_cclosure_marshal_generic         (GClosure *closure,
                                                         GValue *return_gvalue,
                                                         guint n_param_values,
                                                         const GValue *param_values,
                                                         gpointer invocation_hint,
                                                         gpointer marshal_data);

`closure` :
`return_gvalue` :
`n_param_values` :
`param_values` :
`invocation_hint` :
`marshal_data` :

g_type_info_get_ffi_type ()

ffi_type *          g_type_info_get_ffi_type            (GITypeInfo *info);

`info` :	A GITypeInfo
Returns :	A ffi_type corresponding to the platform default C ABI for `info`.

g_function_info_prep_invoker ()

gboolean            g_function_info_prep_invoker        (GIFunctionInfo *info,
                                                         GIFunctionInvoker *invoker,
                                                         GError **error);

Initialize the caller-allocated invoker structure with a cache of information needed to invoke the C function corresponding to info with the platform's default ABI.

A primary intent of this function is that a dynamic structure allocated by a language binding could contain a GIFunctionInvoker structure inside the binding's function mapping.

`info` :	A GIFunctionInfo
`invoker` :	Output invoker structure
`error` :	A GError
Returns :	`TRUE` on success, `FALSE` otherwise with `error` set.

g_function_invoker_destroy ()

void                g_function_invoker_destroy          (GIFunctionInvoker *invoker);

invoker :

g_callable_info_prepare_closure ()

ffi_closure *       g_callable_info_prepare_closure     (GICallableInfo *callable_info,
                                                         ffi_cif *cif,
                                                         GIFFIClosureCallback callback,
                                                         gpointer user_data);

Prepares a callback for ffi invocation.

`callable_info` :	a callable info from a typelib
`cif` :	a ffi_cif structure
`callback` :	the ffi callback
`user_data` :	data to be passed into the callback
Returns :	the ffi_closure or NULL on error. The return value should be freed by calling `g_callable_info_free_closure()`.

g_callable_info_free_closure ()

void                g_callable_info_free_closure        (GICallableInfo *callable_info,
                                                         ffi_closure *closure);

Frees a ffi_closure returned from g_callable_info_prepare_closure()

`callable_info` :	a callable info from a typelib
`closure` :	ffi closure

			GObject Introspection Reference Manual
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