[Qemu-devel] [PATCH 05/10] coroutine: add qemu_co_runnable_schedule()

[Lai Jiangshan]

split qemu_co_queue_next() as two parts:
the first part is dequeuing next from the wait queue.
the second part is schedule it to the runnable 
queue(qemu_co_runnable_schedule())

Signed-off-by: Lai Jiangshan <la...@cn.fujitsu.com>
---
 qemu-coroutine-lock.c |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/qemu-coroutine-lock.c b/qemu-coroutine-lock.c
index 7c29bc4..6f47685 100644
--- a/qemu-coroutine-lock.c
+++ b/qemu-coroutine-lock.c
@@ -44,6 +44,12 @@ static void qemu_co_process_runnable(void *opaque)
     }
 }
 
+static void qemu_co_runnable_schedule(Coroutine *co)
+{
+    QTAILQ_INSERT_TAIL(&co_runnable_queue, co, co_queue_next);
+    qemu_bh_schedule(co_runnable_bh);
+}
+
 static void __attribute__((constructor)) co_runnable_bh_init(void)
 {
     co_runnable_bh = qemu_bh_new(qemu_co_process_runnable, NULL);
@@ -77,9 +83,8 @@ bool qemu_co_queue_next(CoQueue *queue)
     next = QTAILQ_FIRST(&queue->entries);
     if (next) {
         QTAILQ_REMOVE(&queue->entries, next, co_queue_next);
-        QTAILQ_INSERT_TAIL(&co_runnable_queue, next, co_queue_next);
         trace_qemu_co_queue_next(next);
-        qemu_bh_schedule(co_runnable_bh);
+        qemu_co_runnable_schedule(next);
     }
 
     return (next != NULL);
-- 
1.7.4.4