[Qemu-devel] [PATCH 1/3] iothread: provide helpers for internal use

[Peter Xu <peterx@redhat.com>]

IOThread is a general framework that contains IO loop environment and a
real thread behind.  It's also good to be used internally inside qemu.
Provide some helpers for it to create iothreads to be used internally.

Signed-off-by: Peter Xu <peterx@redhat.com>
---
 include/sysemu/iothread.h |  8 ++++++++
 iothread.c                | 21 +++++++++++++++++++++
 2 files changed, 29 insertions(+)

diff --git a/include/sysemu/iothread.h b/include/sysemu/iothread.h
index d2985b3..b07663f 100644
--- a/include/sysemu/iothread.h
+++ b/include/sysemu/iothread.h
@@ -46,4 +46,12 @@ AioContext *iothread_get_aio_context(IOThread *iothread);
 void iothread_stop_all(void);
 GMainContext *iothread_get_g_main_context(IOThread *iothread);
 
+/*
+ * Helpers used to allocate iothreads for internal use.  These
+ * iothreads will not be seen by monitor clients when query using
+ * "query-iothreads".
+ */
+IOThread *iothread_create(const char *id, Error **errp);
+void iothread_destroy(IOThread *iothread);
+
 #endif /* IOTHREAD_H */
diff --git a/iothread.c b/iothread.c
index 44c8944..74e400c 100644
--- a/iothread.c
+++ b/iothread.c
@@ -354,3 +354,24 @@ GMainContext *iothread_get_g_main_context(IOThread *iothread)
 
     return iothread->worker_context;
 }
+
+static Object *iothread_get_internal_parent(void)
+{
+    return container_get(object_get_root(), "/internal-iothreads");
+}
+
+IOThread *iothread_create(const char *id, Error **errp)
+{
+    Object *obj;
+
+    obj = object_new_with_props(TYPE_IOTHREAD,
+                                iothread_get_internal_parent(),
+                                id, errp, NULL);
+
+    return IOTHREAD(obj);
+}
+
+void iothread_destroy(IOThread *iothread)
+{
+    object_unparent(OBJECT(iothread));
+}
-- 
2.7.4