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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-priv.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. */
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 *);
};
/* This program checks we keep a backwards-compatible struct wl_egl_window
* definition whenever it is modified in wayland-egl-priv.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_MEMBERS(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_MEMBERS(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)
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 current wl_egl_window ABI against wl_egl_window_v2 */
CHECK_MEMBER_CURRENT(_v2, surface);
CHECK_MEMBER_CURRENT(_v2, width);
CHECK_MEMBER_CURRENT(_v2, height);
CHECK_MEMBER_CURRENT(_v2, dx);
CHECK_MEMBER_CURRENT(_v2, dy);
CHECK_MEMBER_CURRENT(_v2, attached_width);
CHECK_MEMBER_CURRENT(_v2, attached_height);
CHECK_MEMBER_CURRENT(_v2, private);
CHECK_MEMBER_CURRENT(_v2, resize_callback);
CHECK_MEMBER_CURRENT(_v2, destroy_window_callback);
CHECK_SIZE_CURRENT(_v2);
return 0;
}
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