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authorKevin Wolf <kwolf@redhat.com>2020-10-05 17:58:52 +0200
committerMarkus Armbruster <armbru@redhat.com>2020-10-09 07:08:20 +0200
commit26b0b698c00bd9176f86c539aeb680481fa19473 (patch)
tree4fda52f77177d2997482588790aa2f14ecc0bc1f /include/block/aio.h
parentbb4b9ead95c3aaca84823e28dd9f11ccaa875c14 (diff)
util/async: Add aio_co_reschedule_self()
Add a function that can be used to move the currently running coroutine to a different AioContext (and therefore potentially a different thread). Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Message-Id: <20201005155855.256490-12-kwolf@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'include/block/aio.h')
-rw-r--r--include/block/aio.h10
1 files changed, 10 insertions, 0 deletions
diff --git a/include/block/aio.h b/include/block/aio.h
index ec8c5af642..5f342267d5 100644
--- a/include/block/aio.h
+++ b/include/block/aio.h
@@ -17,6 +17,7 @@
#ifdef CONFIG_LINUX_IO_URING
#include <liburing.h>
#endif
+#include "qemu/coroutine.h"
#include "qemu/queue.h"
#include "qemu/event_notifier.h"
#include "qemu/thread.h"
@@ -655,6 +656,15 @@ static inline bool aio_node_check(AioContext *ctx, bool is_external)
void aio_co_schedule(AioContext *ctx, struct Coroutine *co);
/**
+ * aio_co_reschedule_self:
+ * @new_ctx: the new context
+ *
+ * Move the currently running coroutine to new_ctx. If the coroutine is already
+ * running in new_ctx, do nothing.
+ */
+void coroutine_fn aio_co_reschedule_self(AioContext *new_ctx);
+
+/**
* aio_co_wake:
* @co: the coroutine
*