static void
test_rwlock3 (void)
{
static GRWLock lock;
gboolean ret;
ret = g_rw_lock_writer_trylock (&lock);
g_assert (ret);
ret = g_rw_lock_writer_trylock (&lock);
g_assert (!ret);
g_rw_lock_writer_unlock (&lock);
}
static void
acquire (gint nr)
{
GThread *self;
self = g_thread_self ();
if (!g_rw_lock_writer_trylock (&locks[nr]))
{
if (g_test_verbose ())
g_print ("thread %p going to block on lock %d\n", self, nr);
g_rw_lock_writer_lock (&locks[nr]);
}
g_assert (owners[nr] == NULL); /* hopefully nobody else is here */
owners[nr] = self;
/* let some other threads try to ruin our day */
g_thread_yield ();
g_thread_yield ();
g_thread_yield ();
g_assert (owners[nr] == self); /* hopefully this is still us... */
owners[nr] = NULL; /* make way for the next guy */
g_rw_lock_writer_unlock (&locks[nr]);
}
void
fu_mutex_lock_dbg (FuMutex *self, FuMutexAccess kind, const gchar *strloc, const gchar *strfunc)
{
g_debug ("LOCK \t%s\t%s\t%s\t%s",
self->id,
kind == FU_MUTEX_ACCESS_READ ? "READ" : "WRITE",
strloc,
strfunc);
if (kind == FU_MUTEX_ACCESS_READ) {
if (!g_rw_lock_reader_trylock (&self->rw_lock)) {
g_debug ("failed to read lock, write lock held by %s",
self->writer->str);
}
g_string_printf (self->reader, "%s:%s", strloc, strfunc);
} else {
if (!g_rw_lock_writer_trylock (&self->rw_lock)) {
g_debug ("failed to write lock, read lock held by %s, "
"write lock held by %s",
self->reader->str, self->writer->str);
}
g_string_printf (self->writer, "%s:%s", strloc, strfunc);
}
}