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Diffstat (limited to 'test/xcb-stress-cache.c')
| -rw-r--r-- | test/xcb-stress-cache.c | 118 |
1 files changed, 0 insertions, 118 deletions
diff --git a/test/xcb-stress-cache.c b/test/xcb-stress-cache.c deleted file mode 100644 index 3e3d0a289..000000000 --- a/test/xcb-stress-cache.c +++ /dev/null @@ -1,118 +0,0 @@ -/* - * Copyright © 2011 Uli Schlachter - * - * 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. - * - * Author: Uli Schlachter <psychon@znc.in> - */ - -#include "cairo-test.h" - -#define WIDTH 512 -#define HEIGHT 512 - -/* This is a random pick. This results in 512 (width) * 512 (height) * - * 2 (surfaces per run) * 4 (ARGB32) * ITERATIONS = 200 MiB of image data. */ -#define ITERATIONS 100 - -/* This tries to trigger a bug in the xcb backend where a Picture is freed to - * early. It goes something like this: - * - * - _composite_mask calls _cairo_xcb_picture_for_pattern to get a xcb_picture_t - * for the source. - * - _cairo_xcb_picture_for_pattern calls _cairo_xcb_surface_picture which calls - * _cairo_xcb_screen_store_surface_picture which adds the picture to a cache. - * - _cairo_xcb_surface_picture also attached the picture as a snapshot to - * the source surface using cairo_surface_finish as detach_func. - * - _composite_mask calls _cairo_xcb_picture_for_pattern to get a xcb_picture_t - * for the mask. - * - The resulting picture surface is added to the cache again, but the cache is - * already full, so a random cache entry is picked and removed. - * - The surface that was added before is picked and gets fed to - * _surface_cache_entry_destroy. - * - This calls _cairo_surface_detach_snapshot which causes the - * detach_func from above to be called, so the surface is finished and the - * associated picture is FreePicture'd. - * - _composite_mask now uses a Picture that was already freed. - * - * So this depends on the screen's surface cache to be full which is why we do - * all this looping. - */ - -static cairo_surface_t * -create_image (void) -{ - cairo_surface_t *surface; - cairo_t *cr; - - surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, WIDTH, HEIGHT); - /* Paint something random to the image */ - cr = cairo_create (surface); - cairo_paint (cr); - cairo_set_source_rgb (cr, 0, 1, 1); - cairo_rectangle (cr, 0, 0, WIDTH/2.0, HEIGHT/2.0); - cairo_fill (cr); - cairo_set_source_rgb (cr, 1, 0, 1); - cairo_rectangle (cr, WIDTH/2.0, HEIGHT/2.0, WIDTH/2.0, HEIGHT/2.0); - cairo_fill (cr); - cairo_destroy (cr); - - return surface; -} - -static cairo_surface_t * -dirty_cache (cairo_t *cr) -{ - cairo_surface_t *surface; - - /* Set a source surface... */ - surface = create_image (); - cairo_set_source_surface (cr, surface, 0, 0); - cairo_surface_destroy (surface); - /* ...and create a mask surface, so that we can hit the early FreePicture */ - surface = create_image (); - cairo_mask_surface (cr, surface, 0, 0); - - return surface; -} - -static cairo_test_status_t -draw (cairo_t *cr, int width, int height) -{ - int i; - cairo_surface_t *array[ITERATIONS]; - - /* We have to keep the associated cairo_surface_t alive so that they aren't - * removed from the cache */ - for (i = 0; i < ITERATIONS; i++) - array[i] = dirty_cache (cr); - for (i = 0; i < ITERATIONS; i++) - cairo_surface_destroy (array[i]); - - return CAIRO_TEST_SUCCESS; -} - -CAIRO_TEST (xcb_stress_cache, - "Stress test for a image surface cache in cairo-xcb", - "xcb, stress", /* keywords */ - NULL, /* requirements */ - 2, 2, - NULL, draw) |