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wayland/egl/wayland-egl-abi-check.c
Emil Velikov 9fa60983b5 wayland-egl: rename wl_egl_window::private to driver_private 
private is a reserved keyword in C++. Thus if one is to have a backend
driver written in said language build will fail as below:

.../wayland-egl-backend.h:56:8: expected unqualified-id before ‘private’

Rename it to driver_private and update the test.

NOTE: version bump is not required since:
 - this is a pure API change, ABI is identical
 - hardware drivers already require [minor] changes to move to the
upstream wayland-egl-backend.h

Cc: Arnaud Vrac <rawoul@gmail.com>
Cc: Miguel A . Vico <mvicomoya@nvidia.com>
Suggested-by: Arnaud Vrac <rawoul@gmail.com>
Signed-off-by: Emil Velikov <emil.velikov@collabora.com>
Reviewed-by: Miguel A Vico Moya <mvicomoya@nvidia.com>
2018-02-09 17:34:19 +00:00

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/*
* Copyright (c) 2017, NVIDIA CORPORATION. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <stddef.h> /* offsetof */
#include <stdio.h> /* printf */
#include "wayland-egl-backend.h" /* Current struct wl_egl_window implementation */
/*
* Following are previous implementations of wl_egl_window.
*
* DO NOT EVER CHANGE!
*/
/* From: 214fc6e850 - Benjamin Franzke : egl: Implement libwayland-egl */
struct wl_egl_window_v0 {
struct wl_surface *surface;
int width;
int height;
int dx;
int dy;
int attached_width;
int attached_height;
};
/* From: ca3ed3e024 - Ander Conselvan de Oliveira : egl/wayland: Don't invalidate drawable on swap buffers */
struct wl_egl_window_v1 {
struct wl_surface *surface;
int width;
int height;
int dx;
int dy;
int attached_width;
int attached_height;
void *private;
void (*resize_callback)(struct wl_egl_window *, void *);
};
/* From: 690ead4a13 - Stencel, Joanna : egl/wayland-egl: Fix for segfault in dri2_wl_destroy_surface. */
#define WL_EGL_WINDOW_VERSION_v2 2
struct wl_egl_window_v2 {
struct wl_surface *surface;
int width;
int height;
int dx;
int dy;
int attached_width;
int attached_height;
void *private;
void (*resize_callback)(struct wl_egl_window *, void *);
void (*destroy_window_callback)(void *);
};
/* From: 2d5d61bc49 - Miguel A. Vico : wayland-egl: Make wl_egl_window a versioned struct */
#define WL_EGL_WINDOW_VERSION_v3 3
struct wl_egl_window_v3 {
const intptr_t version;
int width;
int height;
int dx;
int dy;
int attached_width;
int attached_height;
void *driver_private;
void (*resize_callback)(struct wl_egl_window *, void *);
void (*destroy_window_callback)(void *);
struct wl_surface *surface;
};
/* This program checks we keep a backwards-compatible struct wl_egl_window
* definition whenever it is modified in wayland-egl-backend.h.
*
* The previous definition should be added above as a new struct
* wl_egl_window_vN, and the appropriate checks should be added below
*/
#define MEMBER_SIZE(type, member) sizeof(((type *)0)->member)
#define CHECK_RENAMED_MEMBER(a_ver, b_ver, a_member, b_member) \
do { \
if (offsetof(struct wl_egl_window ## a_ver, a_member) != \
offsetof(struct wl_egl_window ## b_ver, b_member)) { \
printf("Backards incompatible change detected!\n " \
"offsetof(struct wl_egl_window" #a_ver "::" #a_member ") != " \
"offsetof(struct wl_egl_window" #b_ver "::" #b_member ")\n"); \
return 1; \
} \
\
if (MEMBER_SIZE(struct wl_egl_window ## a_ver, a_member) != \
MEMBER_SIZE(struct wl_egl_window ## b_ver, b_member)) { \
printf("Backards incompatible change detected!\n " \
"MEMBER_SIZE(struct wl_egl_window" #a_ver "::" #a_member ") != " \
"MEMBER_SIZE(struct wl_egl_window" #b_ver "::" #b_member ")\n"); \
return 1; \
} \
} while (0)
#define CHECK_MEMBER(a_ver, b_ver, member) CHECK_RENAMED_MEMBER(a_ver, b_ver, member, member)
#define CHECK_MEMBER_CURRENT(a_ver, member) CHECK_MEMBER(a_ver,, member)
#define CHECK_SIZE(a_ver, b_ver) \
do { \
if (sizeof(struct wl_egl_window ## a_ver) > \
sizeof(struct wl_egl_window ## b_ver)) { \
printf("Backards incompatible change detected!\n " \
"sizeof(struct wl_egl_window" #a_ver ") > " \
"sizeof(struct wl_egl_window" #b_ver ")\n"); \
return 1; \
} \
} while (0)
#define CHECK_SIZE_CURRENT(a_ver) \
do { \
if (sizeof(struct wl_egl_window ## a_ver) != \
sizeof(struct wl_egl_window)) { \
printf("Backards incompatible change detected!\n " \
"sizeof(struct wl_egl_window" #a_ver ") != " \
"sizeof(struct wl_egl_window)\n"); \
return 1; \
} \
} while (0)
#define CHECK_VERSION(a_ver, b_ver) \
do { \
if ((WL_EGL_WINDOW_VERSION ## a_ver) >= \
(WL_EGL_WINDOW_VERSION ## b_ver)) { \
printf("Backards incompatible change detected!\n " \
"WL_EGL_WINDOW_VERSION" #a_ver " >= " \
"WL_EGL_WINDOW_VERSION" #b_ver "\n"); \
return 1; \
} \
} while (0)
#define CHECK_VERSION_CURRENT(a_ver) \
do { \
if ((WL_EGL_WINDOW_VERSION ## a_ver) != \
(WL_EGL_WINDOW_VERSION)) { \
printf("Backards incompatible change detected!\n " \
"WL_EGL_WINDOW_VERSION" #a_ver " != " \
"WL_EGL_WINDOW_VERSION\n"); \
return 1; \
} \
} while (0)
int main(int argc, char **argv)
{
/* Check wl_egl_window_v1 ABI against wl_egl_window_v0 */
CHECK_MEMBER(_v0, _v1, surface);
CHECK_MEMBER(_v0, _v1, width);
CHECK_MEMBER(_v0, _v1, height);
CHECK_MEMBER(_v0, _v1, dx);
CHECK_MEMBER(_v0, _v1, dy);
CHECK_MEMBER(_v0, _v1, attached_width);
CHECK_MEMBER(_v0, _v1, attached_height);
CHECK_SIZE(_v0, _v1);
/* Check wl_egl_window_v2 ABI against wl_egl_window_v1 */
CHECK_MEMBER(_v1, _v2, surface);
CHECK_MEMBER(_v1, _v2, width);
CHECK_MEMBER(_v1, _v2, height);
CHECK_MEMBER(_v1, _v2, dx);
CHECK_MEMBER(_v1, _v2, dy);
CHECK_MEMBER(_v1, _v2, attached_width);
CHECK_MEMBER(_v1, _v2, attached_height);
CHECK_MEMBER(_v1, _v2, private);
CHECK_MEMBER(_v1, _v2, resize_callback);
CHECK_SIZE(_v1, _v2);
/* Check wl_egl_window_v3 ABI against wl_egl_window_v2 */
CHECK_RENAMED_MEMBER(_v2, _v3, surface, version);
CHECK_MEMBER (_v2, _v3, width);
CHECK_MEMBER (_v2, _v3, height);
CHECK_MEMBER (_v2, _v3, dx);
CHECK_MEMBER (_v2, _v3, dy);
CHECK_MEMBER (_v2, _v3, attached_width);
CHECK_MEMBER (_v2, _v3, attached_height);
CHECK_RENAMED_MEMBER(_v2, _v3, private, driver_private);
CHECK_MEMBER (_v2, _v3, resize_callback);
CHECK_MEMBER (_v2, _v3, destroy_window_callback);
CHECK_SIZE (_v2, _v3);
CHECK_VERSION(_v2, _v3);
/* Check current wl_egl_window ABI against wl_egl_window_v3 */
CHECK_MEMBER_CURRENT(_v3, version);
CHECK_MEMBER_CURRENT(_v3, width);
CHECK_MEMBER_CURRENT(_v3, height);
CHECK_MEMBER_CURRENT(_v3, dx);
CHECK_MEMBER_CURRENT(_v3, dy);
CHECK_MEMBER_CURRENT(_v3, attached_width);
CHECK_MEMBER_CURRENT(_v3, attached_height);
CHECK_MEMBER_CURRENT(_v3, driver_private);
CHECK_MEMBER_CURRENT(_v3, resize_callback);
CHECK_MEMBER_CURRENT(_v3, destroy_window_callback);
CHECK_MEMBER_CURRENT(_v3, surface);
CHECK_SIZE_CURRENT (_v3);
CHECK_VERSION_CURRENT(_v3);
return 0;
}
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