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display-test: test if threads are woken up on EAGAIN

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When wl_connection_read() in wl_display_read_events() returns with EAGAIN,
we want the sleeping threads to be woken up. Test it!

Signed-off-by: Marek Chalupa <mchqwerty@gmail.com>
Reviewed-by: Pekka Paalanen <pekka.paalanen@collabora.co.uk>
This commit is contained in:
Marek Chalupa 2014-09-10 12:47:12 +02:00 • committed by Pekka Paalanen
parent d837741166
commit 65d02b7a83
1 changed files with 39 additions and 0 deletions
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39
tests/display-test.c
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@ -495,6 +495,45 @@ TEST(threading_cancel_read_tst)
display_destroy(d);
}
static void
threading_read_eagain(void)
{
struct client *c = client_connect();
pthread_t th1, th2, th3;
register_reading(c->wl_display);
th1 = create_thread(c, thread_prepare_and_read);
th2 = create_thread(c, thread_prepare_and_read);
th3 = create_thread(c, thread_prepare_and_read);
/* All the threads are sleeping, waiting until read or cancel
* is called. Since we have no data on socket waiting,
* the wl_connection_read should end up with error and set errno
* to EAGAIN. Check if the threads are woken up in this case. */
assert(wl_display_read_events(c->wl_display) == 0);
/* errno should be still set to EAGAIN if wl_connection_read
* set it - check if we're testing the right case */
assert(errno == EAGAIN);
alarm(3);
pthread_join(th1, NULL);
pthread_join(th2, NULL);
pthread_join(th3, NULL);
client_disconnect(c);
}
TEST(threading_read_eagain_tst)
{
struct display *d = display_create();
client_create(d, threading_read_eagain);
display_run(d);
display_destroy(d);
}
static void *
thread_prepare_and_read2(void *data)
{