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From: Stefan Hajnoczi <stefanha@redhat.com>
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Subject: [Qemu-devel] [PULL v2 22/24] coroutine-lock: place CoMutex before
CoQueue in header
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Cc: Peter Maydell <peter.maydell@linaro.org>,
Stefan Hajnoczi <stefanha@redhat.com>, Paolo Bonzini <pbonzini@redhat.com>
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From: Paolo Bonzini <pbonzini@redhat.com>
This will avoid forward references in the next patch. It is also
more logical because CoQueue is not anymore the basic primitive.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: Fam Zheng <famz@redhat.com>
Message-id: 20170213181244.16297-5-pbonzini@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
---
include/qemu/coroutine.h | 89 ++++++++++++++++++++++++--------------------=
----
1 file changed, 44 insertions(+), 45 deletions(-)
diff --git a/include/qemu/coroutine.h b/include/qemu/coroutine.h
index 12ce8e1..9f68579 100644
--- a/include/qemu/coroutine.h
+++ b/include/qemu/coroutine.h
@@ -112,51 +112,6 @@ bool qemu_in_coroutine(void);
*/
bool qemu_coroutine_entered(Coroutine *co);
=20
-
-/**
- * CoQueues are a mechanism to queue coroutines in order to continue execu=
ting
- * them later. They provide the fundamental primitives on which coroutine =
locks
- * are built.
- */
-typedef struct CoQueue {
- QSIMPLEQ_HEAD(, Coroutine) entries;
-} CoQueue;
-
-/**
- * Initialise a CoQueue. This must be called before any other operation is=
used
- * on the CoQueue.
- */
-void qemu_co_queue_init(CoQueue *queue);
-
-/**
- * Adds the current coroutine to the CoQueue and transfers control to the
- * caller of the coroutine.
- */
-void coroutine_fn qemu_co_queue_wait(CoQueue *queue);
-
-/**
- * Restarts the next coroutine in the CoQueue and removes it from the queu=
e.
- *
- * Returns true if a coroutine was restarted, false if the queue is empty.
- */
-bool coroutine_fn qemu_co_queue_next(CoQueue *queue);
-
-/**
- * Restarts all coroutines in the CoQueue and leaves the queue empty.
- */
-void coroutine_fn qemu_co_queue_restart_all(CoQueue *queue);
-
-/**
- * Enter the next coroutine in the queue
- */
-bool qemu_co_enter_next(CoQueue *queue);
-
-/**
- * Checks if the CoQueue is empty.
- */
-bool qemu_co_queue_empty(CoQueue *queue);
-
-
/**
* Provides a mutex that can be used to synchronise coroutines
*/
@@ -202,6 +157,50 @@ void coroutine_fn qemu_co_mutex_lock(CoMutex *mutex);
*/
void coroutine_fn qemu_co_mutex_unlock(CoMutex *mutex);
=20
+
+/**
+ * CoQueues are a mechanism to queue coroutines in order to continue execu=
ting
+ * them later.
+ */
+typedef struct CoQueue {
+ QSIMPLEQ_HEAD(, Coroutine) entries;
+} CoQueue;
+
+/**
+ * Initialise a CoQueue. This must be called before any other operation is=
used
+ * on the CoQueue.
+ */
+void qemu_co_queue_init(CoQueue *queue);
+
+/**
+ * Adds the current coroutine to the CoQueue and transfers control to the
+ * caller of the coroutine.
+ */
+void coroutine_fn qemu_co_queue_wait(CoQueue *queue);
+
+/**
+ * Restarts the next coroutine in the CoQueue and removes it from the queu=
e.
+ *
+ * Returns true if a coroutine was restarted, false if the queue is empty.
+ */
+bool coroutine_fn qemu_co_queue_next(CoQueue *queue);
+
+/**
+ * Restarts all coroutines in the CoQueue and leaves the queue empty.
+ */
+void coroutine_fn qemu_co_queue_restart_all(CoQueue *queue);
+
+/**
+ * Enter the next coroutine in the queue
+ */
+bool qemu_co_enter_next(CoQueue *queue);
+
+/**
+ * Checks if the CoQueue is empty.
+ */
+bool qemu_co_queue_empty(CoQueue *queue);
+
+
typedef struct CoRwlock {
bool writer;
int reader;
--=20
2.9.3