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/*
* 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, "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, "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)
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