TryLockRaceThread::mutex.unlock();
}
+// Variable that will be protected by the mutex. Volatile so that the
+// the optimiser doesn't mess with it based on the increment-then-decrement
+// usage pattern.
static volatile int qtbug16115_trylock_counter;
+// Counter for how many times the protected variable has an incorrect value.
+static int qtbug16115_failure_count = 0;
void tst_QMutex::qtbug16115_trylock()
{
void run() {
for (int i = 0; i < 1000000; ++i) {
if (mut.tryLock(0)) {
- Q_ASSERT((++qtbug16115_trylock_counter) == 1);
- Q_ASSERT((--qtbug16115_trylock_counter) == 0);
+ if ((++qtbug16115_trylock_counter) != 1)
+ ++qtbug16115_failure_count;
+ if ((--qtbug16115_trylock_counter) != 0)
+ ++qtbug16115_failure_count;
mut.unlock();
}
}
for (int i = 0; i < 1000000; ++i) {
mut.lock();
- Q_ASSERT((++qtbug16115_trylock_counter) == 1);
- Q_ASSERT((--qtbug16115_trylock_counter) == 0);
+ if ((++qtbug16115_trylock_counter) != 1)
+ ++qtbug16115_failure_count;
+ if ((--qtbug16115_trylock_counter) != 0)
+ ++qtbug16115_failure_count;
mut.unlock();
}
t1.wait();
t2.wait();
t3.wait();
+ QCOMPARE(qtbug16115_failure_count, 0);
}
QTEST_MAIN(tst_QMutex)