PyObject *
pygi_invoke_c_callable (PyGIFunctionCache *function_cache,
PyGIInvokeState *state,
PyObject *py_args,
PyObject *py_kwargs)
{
PyGICallableCache *cache = (PyGICallableCache *) function_cache;
GIFFIReturnValue ffi_return_value = {0};
PyObject *ret = NULL;
if (!_invoke_state_init_from_cache (state, function_cache,
py_args, py_kwargs))
goto err;
if (!_invoke_marshal_in_args (state, function_cache))
goto err;
Py_BEGIN_ALLOW_THREADS;
ffi_call (&function_cache->invoker.cif,
state->function_ptr,
(void *) &ffi_return_value,
(void **) state->ffi_args);
Py_END_ALLOW_THREADS;
/* If the callable throws, the address of state->error will be bound into
* the state->args as the last value. When the callee sets an error using
* the state->args passed, it will have the side effect of setting
* state->error allowing for easy checking here.
*/
if (state->error != NULL) {
if (pygi_error_check (&state->error)) {
/* even though we errored out, the call itself was successful,
so we assume the call processed all of the parameters */
pygi_marshal_cleanup_args_from_py_marshal_success (state, cache);
goto err;
}
}
if (cache->return_cache) {
gi_type_info_extract_ffi_return_value (cache->return_cache->type_info,
&ffi_return_value,
&state->return_arg);
}
ret = _invoke_marshal_out_args (state, function_cache);
pygi_marshal_cleanup_args_from_py_marshal_success (state, cache);
if (ret != NULL)
pygi_marshal_cleanup_args_to_py_marshal_success (state, cache);
err:
_invoke_state_clear (state, function_cache);
return ret;
}
/**
* g_callable_info_invoke:
* @info: TODO
* @function: TODO
* @in_args: TODO
* @n_in_args: TODO
* @out_args: TODO
* @n_out_args: TODO
* @return_value: TODO
* @is_method: TODO
* @throws: TODO
* @error: TODO
*
* TODO
*/
gboolean
g_callable_info_invoke (GIFunctionInfo *info,
gpointer function,
const GIArgument *in_args,
int n_in_args,
const GIArgument *out_args,
int n_out_args,
GIArgument *return_value,
gboolean is_method,
gboolean throws,
GError **error)
{
ffi_cif cif;
ffi_type *rtype;
ffi_type **atypes;
GITypeInfo *tinfo;
GITypeInfo *rinfo;
GITypeTag rtag;
GIArgInfo *ainfo;
gint n_args, n_invoke_args, in_pos, out_pos, i;
gpointer *args;
gboolean success = FALSE;
GError *local_error = NULL;
gpointer error_address = &local_error;
GIFFIReturnValue ffi_return_value;
gpointer return_value_p; /* Will point inside the union return_value */
rinfo = g_callable_info_get_return_type ((GICallableInfo *)info);
rtype = g_type_info_get_ffi_type (rinfo);
rtag = g_type_info_get_tag(rinfo);
in_pos = 0;
out_pos = 0;
n_args = g_callable_info_get_n_args ((GICallableInfo *)info);
if (is_method)
{
if (n_in_args == 0)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"in\" arguments (handling this)");
goto out;
}
n_invoke_args = n_args+1;
in_pos++;
}
else
n_invoke_args = n_args;
if (throws)
/* Add an argument for the GError */
n_invoke_args ++;
atypes = g_alloca (sizeof (ffi_type*) * n_invoke_args);
args = g_alloca (sizeof (gpointer) * n_invoke_args);
if (is_method)
{
atypes[0] = &ffi_type_pointer;
args[0] = (gpointer) &in_args[0];
}
for (i = 0; i < n_args; i++)
{
int offset = (is_method ? 1 : 0);
ainfo = g_callable_info_get_arg ((GICallableInfo *)info, i);
switch (g_arg_info_get_direction (ainfo))
{
case GI_DIRECTION_IN:
tinfo = g_arg_info_get_type (ainfo);
atypes[i+offset] = g_type_info_get_ffi_type (tinfo);
g_base_info_unref ((GIBaseInfo *)tinfo);
if (in_pos >= n_in_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"in\" arguments (handling in)");
goto out;
}
args[i+offset] = (gpointer)&in_args[in_pos];
in_pos++;
break;
case GI_DIRECTION_OUT:
atypes[i+offset] = &ffi_type_pointer;
if (out_pos >= n_out_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"out\" arguments (handling out)");
goto out;
}
args[i+offset] = (gpointer)&out_args[out_pos];
out_pos++;
break;
case GI_DIRECTION_INOUT:
atypes[i+offset] = &ffi_type_pointer;
if (in_pos >= n_in_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"in\" arguments (handling inout)");
goto out;
}
if (out_pos >= n_out_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too few \"out\" arguments (handling inout)");
goto out;
}
args[i+offset] = (gpointer)&in_args[in_pos];
in_pos++;
out_pos++;
break;
default:
g_assert_not_reached ();
}
g_base_info_unref ((GIBaseInfo *)ainfo);
}
if (throws)
{
args[n_invoke_args - 1] = &error_address;
atypes[n_invoke_args - 1] = &ffi_type_pointer;
}
if (in_pos < n_in_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too many \"in\" arguments (at end)");
goto out;
}
if (out_pos < n_out_args)
{
g_set_error (error,
G_INVOKE_ERROR,
G_INVOKE_ERROR_ARGUMENT_MISMATCH,
"Too many \"out\" arguments (at end)");
goto out;
}
if (ffi_prep_cif (&cif, FFI_DEFAULT_ABI, n_invoke_args, rtype, atypes) != FFI_OK)
goto out;
g_return_val_if_fail (return_value, FALSE);
/* See comment for GIFFIReturnValue above */
switch (rtag)
{
case GI_TYPE_TAG_FLOAT:
return_value_p = &ffi_return_value.v_float;
break;
case GI_TYPE_TAG_DOUBLE:
return_value_p = &ffi_return_value.v_double;
break;
case GI_TYPE_TAG_INT64:
case GI_TYPE_TAG_UINT64:
return_value_p = &ffi_return_value.v_uint64;
break;
default:
return_value_p = &ffi_return_value.v_long;
}
ffi_call (&cif, function, return_value_p, args);
if (local_error)
{
g_propagate_error (error, local_error);
success = FALSE;
}
else
{
gi_type_info_extract_ffi_return_value (rinfo, &ffi_return_value, return_value);
success = TRUE;
}
out:
g_base_info_unref ((GIBaseInfo *)rinfo);
return success;
}
