A feature of the current rwlock is that if multiple coroutines hold a
reader lock, all must be runnable. The unlock implementation relies on
this, choosing to wake a single coroutine when the final read lock
holder exits the critical section, assuming that it will wake a
coroutine attempting to acq
On 09/03/21 11:21, David Edmondson wrote:
A feature of the current rwlock is that if multiple coroutines hold a
reader lock, all must be runnable. The unlock implementation relies on
this, choosing to wake a single coroutine when the final read lock
holder exits the critical section, assuming tha
On 09/03/21 11:21, David Edmondson wrote:
-/* The critical section started in qemu_co_rwlock_wrlock. */
-qemu_co_queue_restart_all(&lock->queue);
+/* The critical section started in qemu_co_rwlock_wrlock or
+ * qemu_co_rwlock_upgrade.
+ */
+qemu_co
On Tuesday, 2021-03-09 at 12:06:22 +01, Paolo Bonzini wrote:
> On 09/03/21 11:21, David Edmondson wrote:
>> -/* The critical section started in qemu_co_rwlock_wrlock. */
>> -qemu_co_queue_restart_all(&lock->queue);
>> +/* The critical section started in qemu_co_rwlock_wrlo
