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block-coroutine-wrapper.py: introduce co_wrapper

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This new annotation starts just a function wrapper that creates
a new coroutine. It assumes the caller is not a coroutine.
It will be the default annotation to be used in the future.

This is much better as c_w_mixed, because it is clear if the caller
is a coroutine or not, and provides the advantage of automating
the code creation. In the future all c_w_mixed functions will be
substituted by co_wrapper.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-Id: <20221128142337.657646-11-eesposit@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Emanuele Giuseppe Esposito 2022-11-28 09:23:33 -05:00 • committed by Kevin Wolf
parent 1bd542016c
commit 76a2f554c1
3 changed files with 86 additions and 38 deletions
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8
include/block/block-common.h
View file

@ -42,9 +42,13 @@
*
* Usage: read docs/devel/block-coroutine-wrapper.rst
*
* co_wrapper_mixed functions can be called by both coroutine and
* non-coroutine context.
* There are 2 kind of specifiers:
* - co_wrapper functions can be called by only non-coroutine context, because
* they always generate a new coroutine.
* - co_wrapper_mixed functions can be called by both coroutine and
* non-coroutine context.
*/
#define co_wrapper
#define co_wrapper_mixed
/* block.c */