/*
* Event loop thread
*
- * Copyright Red Hat Inc., 2013
+ * Copyright Red Hat Inc., 2013, 2020
*
* Authors:
* Stefan Hajnoczi <stefanha@redhat.com>
typedef ObjectClass IOThreadClass;
-#define IOTHREAD_GET_CLASS(obj) \
- OBJECT_GET_CLASS(IOThreadClass, obj, TYPE_IOTHREAD)
-#define IOTHREAD_CLASS(klass) \
- OBJECT_CLASS_CHECK(IOThreadClass, klass, TYPE_IOTHREAD)
+DECLARE_CLASS_CHECKERS(IOThreadClass, IOTHREAD,
+ TYPE_IOTHREAD)
#ifdef CONFIG_POSIX
/* Benchmark results from 2016 on NVMe SSD drives show max polling times around
#define IOTHREAD_POLL_MAX_NS_DEFAULT 0ULL
#endif
-static __thread IOThread *my_iothread;
-
-AioContext *qemu_get_current_aio_context(void)
-{
- return my_iothread ? my_iothread->ctx : qemu_get_aio_context();
-}
-
static void *iothread_run(void *opaque)
{
IOThread *iothread = opaque;
* in this new thread uses glib.
*/
g_main_context_push_thread_default(iothread->worker_context);
- my_iothread = iothread;
+ qemu_set_current_aio_context(iothread->ctx);
iothread->thread_id = qemu_get_thread_id();
qemu_sem_post(&iothread->init_done_sem);
* We must check the running state again in case it was
* changed in previous aio_poll()
*/
- if (iothread->running && atomic_read(&iothread->run_gcontext)) {
+ if (iothread->running && qatomic_read(&iothread->run_gcontext)) {
g_main_loop_run(iothread->main_loop);
}
}
iothread->thread_id = -1;
qemu_sem_init(&iothread->init_done_sem, 0);
/* By default, we don't run gcontext */
- atomic_set(&iothread->run_gcontext, 0);
+ qatomic_set(&iothread->run_gcontext, 0);
}
static void iothread_instance_finalize(Object *obj)
static int query_one_iothread(Object *object, void *opaque)
{
- IOThreadInfoList ***prev = opaque;
- IOThreadInfoList *elem;
+ IOThreadInfoList ***tail = opaque;
IOThreadInfo *info;
IOThread *iothread;
info->poll_grow = iothread->poll_grow;
info->poll_shrink = iothread->poll_shrink;
- elem = g_new0(IOThreadInfoList, 1);
- elem->value = info;
- elem->next = NULL;
-
- **prev = elem;
- *prev = &elem->next;
+ QAPI_LIST_APPEND(*tail, info);
return 0;
}
GMainContext *iothread_get_g_main_context(IOThread *iothread)
{
- atomic_set(&iothread->run_gcontext, 1);
+ qatomic_set(&iothread->run_gcontext, 1);
aio_notify(iothread->ctx);
return iothread->worker_context;
}
{
return IOTHREAD(object_resolve_path_type(id, TYPE_IOTHREAD, NULL));
}
+
+bool qemu_in_iothread(void)
+{
+ return qemu_get_current_aio_context() == qemu_get_aio_context() ?
+ false : true;
+}