#include "cairo-test.h"
#include <pthread.h>
#define N_THREADS 8
#define WIDTH 64
#define HEIGHT 8
static void *
draw_thread (void *arg)
{
cairo_surface_t *surface = arg;
cairo_t *cr;
int x, y;
cr = cairo_create (surface);
cairo_surface_destroy (surface);
for (y = 0; y < HEIGHT; y++) {
for (x = 0; x < WIDTH; x++) {
cairo_rectangle (cr, x, y, 1, 1);
cairo_set_source_rgba (cr, 0, 0.75, 0.75, (double) x / WIDTH);
cairo_fill (cr);
}
}
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];
cairo_test_status_t test_status = CAIRO_TEST_SUCCESS;
int i;
for (i = 0; i < N_THREADS; i++) {
cairo_surface_t *surface;
surface = cairo_surface_create_similar (cairo_get_target (cr),
CAIRO_CONTENT_COLOR,
WIDTH, HEIGHT);
if (pthread_create (&threads[i], NULL, draw_thread, surface) != 0) {
threads[i] = pthread_self ();
test_status = cairo_test_status_from_status (cairo_test_get_context (cr),
cairo_surface_status (surface));
cairo_surface_destroy (surface);
break;
}
}
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_similar,
"Draw lots of 1x1 rectangles on similar surfaces in lots of threads",
"threads",
NULL,
WIDTH, HEIGHT * N_THREADS,
NULL, draw)