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-rw-r--r--test/pthread-same-source.c192
1 files changed, 192 insertions, 0 deletions
diff --git a/test/pthread-same-source.c b/test/pthread-same-source.c
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+/*
+ * Copyright 2009 Benjamin Otte
+ *
+ * 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: Benjamin Otte <otte@gnome.org>
+ */
+
+#define GENERATE_REFERENCE 0
+
+#include "cairo-test.h"
+#if !GENERATE_REFERENCE
+#include <pthread.h>
+#endif
+
+#define N_THREADS 8
+
+#define WIDTH 64
+#define HEIGHT 8
+
+typedef struct {
+ cairo_surface_t *target;
+ cairo_surface_t *source;
+ int id;
+} thread_data_t;
+
+static void *
+draw_thread (void *arg)
+{
+ thread_data_t *thread_data = arg;
+ cairo_surface_t *surface;
+ cairo_pattern_t *pattern;
+ cairo_matrix_t pattern_matrix = { 2, 0, 0, 2, 0, 0 };
+ cairo_t *cr;
+ int x, y;
+
+ cr = cairo_create (thread_data->target);
+ cairo_surface_destroy (thread_data->target);
+
+ pattern = cairo_pattern_create_for_surface (thread_data->source);
+ cairo_surface_destroy (thread_data->source);
+ cairo_pattern_set_extend (pattern, thread_data->id % 4);
+ cairo_pattern_set_filter (pattern, thread_data->id >= 4 ? CAIRO_FILTER_BILINEAR : CAIRO_FILTER_NEAREST);
+ cairo_pattern_set_matrix (pattern, &pattern_matrix);
+
+ for (y = 0; y < HEIGHT; y++) {
+ for (x = 0; x < WIDTH; x++) {
+ cairo_save (cr);
+ cairo_translate (cr, 4 * x + 1, 4 * y + 1);
+ cairo_rectangle (cr, 0, 0, 2, 2);
+ cairo_set_source (cr, pattern);
+ cairo_fill (cr);
+ cairo_restore (cr);
+ }
+ }
+ cairo_pattern_destroy (pattern);
+
+ surface = cairo_surface_reference (cairo_get_target (cr));
+ cairo_destroy (cr);
+
+ return surface;
+}
+
+static cairo_surface_t *
+create_source (cairo_surface_t *similar)
+{
+ cairo_surface_t *source;
+ cairo_t *cr;
+ double colors[4][3] = {
+ { 0.75, 0, 0 },
+ { 0, 0.75, 0 },
+ { 0, 0, 0.75 },
+ { 0.75, 0.75, 0 }
+ };
+ int i;
+
+ source = cairo_surface_create_similar (similar,
+ CAIRO_CONTENT_COLOR_ALPHA,
+ 2, 2);
+
+ cr = cairo_create (source);
+ cairo_surface_destroy (source);
+
+ for (i = 0; i < 4; i++) {
+ cairo_set_source_rgb (cr, colors[i][0], colors[i][1], colors[i][2]);
+ cairo_rectangle (cr, i % 2, i / 2, 1, 1);
+ cairo_fill (cr);
+ }
+
+ source = cairo_surface_reference (cairo_get_target (cr));
+ cairo_destroy (cr);
+
+ return source;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+#if !GENERATE_REFERENCE
+ pthread_t threads[N_THREADS];
+#endif
+ thread_data_t thread_data[N_THREADS];
+ cairo_test_status_t test_status = CAIRO_TEST_SUCCESS;
+ cairo_surface_t *source;
+ cairo_status_t status;
+ int i;
+
+ source = create_source (cairo_get_target (cr));
+ status = cairo_surface_status (source);
+ if (status) {
+ cairo_surface_destroy (source);
+ return cairo_test_status_from_status (cairo_test_get_context (cr),
+ status);
+ }
+
+ cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
+ cairo_paint (cr);
+
+ for (i = 0; i < N_THREADS; i++) {
+ thread_data[i].target = cairo_surface_create_similar (cairo_get_target (cr),
+ CAIRO_CONTENT_COLOR_ALPHA,
+ 4 * WIDTH, 4 * HEIGHT);
+ thread_data[i].source = cairo_surface_reference (source);
+ thread_data[i].id = i;
+#if !GENERATE_REFERENCE
+ if (pthread_create (&threads[i], NULL, draw_thread, &thread_data[i]) != 0) {
+ threads[i] = pthread_self (); /* to indicate error */
+ cairo_surface_destroy (thread_data[i].target);
+ cairo_surface_destroy (thread_data[i].source);
+ test_status = CAIRO_TEST_FAILURE;
+ break;
+ }
+#else
+ {
+ cairo_surface_t *surface = draw_thread(&thread_data[i]);
+ cairo_set_source_surface (cr, surface, 0, 0);
+ cairo_surface_destroy (surface);
+ cairo_paint (cr);
+
+ cairo_translate (cr, 0, 4 * HEIGHT);
+ }
+#endif
+ }
+
+ cairo_surface_destroy (source);
+
+#if !GENERATE_REFERENCE
+ for (i = 0; i < N_THREADS; i++) {
+ void *surface;
+
+ if (pthread_equal (threads[i], pthread_self ()))
+ break;
+
+ if (pthread_join (threads[i], &surface) == 0) {
+ cairo_set_source_surface (cr, surface, 0, 0);
+ cairo_surface_destroy (surface);
+ cairo_paint (cr);
+
+ cairo_translate (cr, 0, 4 * HEIGHT);
+ } else {
+ test_status = CAIRO_TEST_FAILURE;
+ }
+ }
+#endif
+
+ return test_status;
+}
+
+CAIRO_TEST (pthread_same_source,
+ "Use the same source for drawing in different threads",
+ "threads", /* keywords */
+ NULL, /* requirements */
+ 4 * WIDTH, 4 * HEIGHT * N_THREADS,
+ NULL, draw)