1 files changed, 142 insertions, 0 deletions
diff --git a/libs/cairo-1.16.0/test/pthread-show-text.c b/libs/cairo-1.16.0/test/pthread-show-text.c
new file mode 100644
index 0000000..0f076cb
--- /dev/null
+++ b/libs/cairo-1.16.0/test/pthread-show-text.c
@@ -0,0 +1,142 @@
+/*
+ * Copyright © 2005 Red Hat, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software
+ * and its documentation for any purpose is hereby granted without
+ * fee, provided that the above copyright notice appear in all copies
+ * and that both that copyright notice and this permission notice
+ * appear in supporting documentation, and that the name of
+ * Red Hat, Inc. not be used in advertising or publicity pertaining to
+ * distribution of the software without specific, written prior
+ * permission. Red Hat, Inc. makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as
+ * is" without express or implied warranty.
+ *
+ * RED HAT, INC. DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
+ * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ * FITNESS, IN NO EVENT SHALL RED HAT, INC. BE LIABLE FOR ANY SPECIAL,
+ * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
+ * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
+ * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author: Carl D. Worth <cworth@cworth.org>
+ */
+
+/* Test case for bug #4299:
+
+   Assertion fails in "cairo-font.c" when using multithreads
+   https://bugs.freedesktop.org/show_bug.cgi?id=4299
+*/
+
+#include "cairo-test.h"
+
+#include <string.h>
+#include <stdlib.h>
+#include <pthread.h>
+
+#define N_THREADS 8
+#define NUM_ITERATIONS 40
+
+#define WIDTH 400
+#define HEIGHT 42
+
+typedef struct {
+  cairo_surface_t *target;
+  int id;
+} thread_data_t;
+
+static void *
+draw_thread (void *arg)
+{
+    const char *text = "Hello world. ";
+    thread_data_t *thread_data = arg;
+    cairo_surface_t *surface;
+    cairo_font_extents_t extents;
+    cairo_t *cr;
+    int i;
+
+    cr = cairo_create (thread_data->target);
+    cairo_surface_destroy (thread_data->target);
+
+    cairo_set_source_rgb (cr, 1, 1, 1);
+    cairo_paint (cr);
+    cairo_set_source_rgb (cr, 0, 0, 0);
+
+    cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Serif",
+			    CAIRO_FONT_SLANT_NORMAL,
+			    CAIRO_FONT_WEIGHT_NORMAL);
+    cairo_set_font_size (cr, NUM_ITERATIONS);
+    cairo_font_extents (cr, &extents);
+
+    cairo_move_to (cr, 1, HEIGHT - extents.descent - 1);
+
+    for (i = 0; i < NUM_ITERATIONS; i++) {
+	char buf[2];
+
+	cairo_select_font_face (cr, CAIRO_TEST_FONT_FAMILY " Serif",
+				CAIRO_FONT_SLANT_NORMAL,
+				CAIRO_FONT_WEIGHT_NORMAL);
+	cairo_set_font_size (cr, i);
+
+	buf[0] = text[i%strlen(text)];
+	buf[1] = '\0';
+	cairo_show_text (cr, buf);
+    }
+
+    surface = cairo_surface_reference (cairo_get_target (cr));
+    cairo_destroy (cr);
+
+    return surface;
+}
+
+static cairo_test_status_t
+draw (cairo_t *cr, int width, int height)
+{
+    pthread_t threads[N_THREADS];
+    thread_data_t thread_data[N_THREADS];
+    cairo_test_status_t test_status = CAIRO_TEST_SUCCESS;
+    int i;
+
+    for (i = 0; i < N_THREADS; i++) {
+        thread_data[i].target = cairo_surface_create_similar (cairo_get_target (cr),
+							      cairo_surface_get_content (cairo_get_target (cr)),
+							      WIDTH, HEIGHT);
+        thread_data[i].id = i;
+        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);
+            test_status = CAIRO_TEST_FAILURE;
+	    break;
+        }
+    }
+
+    cairo_set_source_rgb (cr, 0.5, 0.5, 0.5);
+    cairo_paint (cr);
+
+    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, HEIGHT);
+	} else {
+            test_status = CAIRO_TEST_FAILURE;
+	}
+    }
+
+    return test_status;
+}
+
+CAIRO_TEST (pthread_show_text,
+	    "Concurrent stress test of the cairo_show_text().",
+	    "thread, text", /* keywords */
+	    NULL, /* requirements */
+	    WIDTH, HEIGHT * N_THREADS,
+	    NULL, draw)