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block: rename generated_co_wrapper in co_wrapper_mixed

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In preparation to the incoming new function specifiers,
rename g_c_w with a more meaningful name and document it.

Signed-off-by: Emanuele Giuseppe Esposito <eesposit@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
Message-Id: <20221128142337.657646-10-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 09:23:32 -05:00 committed by Kevin Wolf
parent 2475a0d0f4
commit 1bd542016c
6 changed files with 71 additions and 68 deletions
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4
block/coroutines.h
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@ -71,7 +71,7 @@ nbd_co_do_establish_connection(BlockDriverState *bs, bool blocking,
* the "I/O or GS" API.
*/
int generated_co_wrapper
int co_wrapper_mixed
bdrv_common_block_status_above(BlockDriverState *bs,
BlockDriverState *base,
bool include_base,
@ -82,7 +82,7 @@ bdrv_common_block_status_above(BlockDriverState *bs,
int64_t *map,
BlockDriverState **file,
int *depth);
int generated_co_wrapper
int co_wrapper_mixed
nbd_do_establish_connection(BlockDriverState *bs, bool blocking, Error **errp);
#endif /* BLOCK_COROUTINES_H */

6
docs/devel/block-coroutine-wrapper.rst
View File

@ -26,12 +26,12 @@ called ``bdrv_foo(<same args>)``. In this case the script can help. To
trigger the generation:
1. You need ``bdrv_foo`` declaration somewhere (for example, in
``block/coroutines.h``) with the ``generated_co_wrapper`` mark,
``block/coroutines.h``) with the ``co_wrapper_mixed`` mark,
like this:
.. code-block:: c
int generated_co_wrapper bdrv_foo(<some args>);
int co_wrapper_mixed bdrv_foo(<some args>);
2. You need to feed this declaration to block-coroutine-wrapper script.
For this, add the .h (or .c) file with the declaration to the
@ -46,7 +46,7 @@ Links
1. The script location is ``scripts/block-coroutine-wrapper.py``.
2. Generic place for private ``generated_co_wrapper`` declarations is
2. Generic place for private ``co_wrapper_mixed`` declarations is
``block/coroutines.h``, for public declarations:
``include/block/block.h``

11
include/block/block-common.h
View File

@ -35,14 +35,17 @@
#include "qemu/transactions.h"
/*
* generated_co_wrapper
* co_wrapper{*}: Function specifiers used by block-coroutine-wrapper.py
*
* Function specifier, which does nothing but mark functions to be
* Function specifiers, which do nothing but mark functions to be
* generated by scripts/block-coroutine-wrapper.py
*
* Read more in docs/devel/block-coroutine-wrapper.rst
* Usage: read docs/devel/block-coroutine-wrapper.rst
*
* co_wrapper_mixed functions can be called by both coroutine and
* non-coroutine context.
*/
#define generated_co_wrapper
#define co_wrapper_mixed
/* block.c */
typedef struct BlockDriver BlockDriver;

44
include/block/block-io.h
View File

@ -39,19 +39,19 @@
* to catch when they are accidentally called by the wrong API.
*/
int generated_co_wrapper bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset,
int64_t bytes,
BdrvRequestFlags flags);
int co_wrapper_mixed bdrv_pwrite_zeroes(BdrvChild *child, int64_t offset,
int64_t bytes,
BdrvRequestFlags flags);
int bdrv_make_zero(BdrvChild *child, BdrvRequestFlags flags);
int generated_co_wrapper bdrv_pread(BdrvChild *child, int64_t offset,
int64_t bytes, void *buf,
BdrvRequestFlags flags);
int generated_co_wrapper bdrv_pwrite(BdrvChild *child, int64_t offset,
int64_t bytes, const void *buf,
BdrvRequestFlags flags);
int generated_co_wrapper bdrv_pwrite_sync(BdrvChild *child, int64_t offset,
int64_t bytes, const void *buf,
BdrvRequestFlags flags);
int co_wrapper_mixed bdrv_pread(BdrvChild *child, int64_t offset,
int64_t bytes, void *buf,
BdrvRequestFlags flags);
int co_wrapper_mixed bdrv_pwrite(BdrvChild *child, int64_t offset,
int64_t bytes, const void *buf,
BdrvRequestFlags flags);
int co_wrapper_mixed bdrv_pwrite_sync(BdrvChild *child, int64_t offset,
int64_t bytes, const void *buf,
BdrvRequestFlags flags);
int coroutine_fn bdrv_co_pwrite_sync(BdrvChild *child, int64_t offset,
int64_t bytes, const void *buf,
BdrvRequestFlags flags);
@ -281,22 +281,22 @@ int coroutine_fn bdrv_co_copy_range(BdrvChild *src, int64_t src_offset,
void bdrv_drain(BlockDriverState *bs);
int generated_co_wrapper
int co_wrapper_mixed
bdrv_truncate(BdrvChild *child, int64_t offset, bool exact,
PreallocMode prealloc, BdrvRequestFlags flags, Error **errp);
int generated_co_wrapper bdrv_check(BlockDriverState *bs, BdrvCheckResult *res,
BdrvCheckMode fix);
int co_wrapper_mixed bdrv_check(BlockDriverState *bs, BdrvCheckResult *res,
BdrvCheckMode fix);
/* Invalidate any cached metadata used by image formats */
int generated_co_wrapper bdrv_invalidate_cache(BlockDriverState *bs,
Error **errp);
int generated_co_wrapper bdrv_flush(BlockDriverState *bs);
int generated_co_wrapper bdrv_pdiscard(BdrvChild *child, int64_t offset,
int64_t bytes);
int generated_co_wrapper
int co_wrapper_mixed bdrv_invalidate_cache(BlockDriverState *bs,
Error **errp);
int co_wrapper_mixed bdrv_flush(BlockDriverState *bs);
int co_wrapper_mixed bdrv_pdiscard(BdrvChild *child, int64_t offset,
int64_t bytes);
int co_wrapper_mixed
bdrv_readv_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos);
int generated_co_wrapper
int co_wrapper_mixed
bdrv_writev_vmstate(BlockDriverState *bs, QEMUIOVector *qiov, int64_t pos);
/**

68
include/sysemu/block-backend-io.h
View File

@ -110,77 +110,77 @@ int coroutine_fn blk_co_is_allocated_above(BlockBackend *blk,
* the "I/O or GS" API.
*/
int generated_co_wrapper blk_pread(BlockBackend *blk, int64_t offset,
int64_t bytes, void *buf,
BdrvRequestFlags flags);
int co_wrapper_mixed blk_pread(BlockBackend *blk, int64_t offset,
int64_t bytes, void *buf,
BdrvRequestFlags flags);
int coroutine_fn blk_co_pread(BlockBackend *blk, int64_t offset, int64_t bytes,
void *buf, BdrvRequestFlags flags);
int generated_co_wrapper blk_preadv(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
int co_wrapper_mixed blk_preadv(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
int coroutine_fn blk_co_preadv(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
int generated_co_wrapper blk_preadv_part(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
size_t qiov_offset,
BdrvRequestFlags flags);
int co_wrapper_mixed blk_preadv_part(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
size_t qiov_offset,
BdrvRequestFlags flags);
int coroutine_fn blk_co_preadv_part(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
size_t qiov_offset, BdrvRequestFlags flags);
int generated_co_wrapper blk_pwrite(BlockBackend *blk, int64_t offset,
int64_t bytes, const void *buf,
BdrvRequestFlags flags);
int co_wrapper_mixed blk_pwrite(BlockBackend *blk, int64_t offset,
int64_t bytes, const void *buf,
BdrvRequestFlags flags);
int coroutine_fn blk_co_pwrite(BlockBackend *blk, int64_t offset, int64_t bytes,
const void *buf, BdrvRequestFlags flags);
int generated_co_wrapper blk_pwritev(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
int co_wrapper_mixed blk_pwritev(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
int coroutine_fn blk_co_pwritev(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
BdrvRequestFlags flags);
int generated_co_wrapper blk_pwritev_part(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
size_t qiov_offset,
BdrvRequestFlags flags);
int co_wrapper_mixed blk_pwritev_part(BlockBackend *blk, int64_t offset,
int64_t bytes, QEMUIOVector *qiov,
size_t qiov_offset,
BdrvRequestFlags flags);
int coroutine_fn blk_co_pwritev_part(BlockBackend *blk, int64_t offset,
int64_t bytes,
QEMUIOVector *qiov, size_t qiov_offset,
BdrvRequestFlags flags);
int generated_co_wrapper blk_pwrite_compressed(BlockBackend *blk,
int64_t offset, int64_t bytes,
const void *buf);
int co_wrapper_mixed blk_pwrite_compressed(BlockBackend *blk,
int64_t offset, int64_t bytes,
const void *buf);
int coroutine_fn blk_co_pwrite_compressed(BlockBackend *blk, int64_t offset,
int64_t bytes, const void *buf);
int generated_co_wrapper blk_pwrite_zeroes(BlockBackend *blk, int64_t offset,
int64_t bytes,
BdrvRequestFlags flags);
int co_wrapper_mixed blk_pwrite_zeroes(BlockBackend *blk, int64_t offset,
int64_t bytes,
BdrvRequestFlags flags);
int coroutine_fn blk_co_pwrite_zeroes(BlockBackend *blk, int64_t offset,
int64_t bytes, BdrvRequestFlags flags);
int generated_co_wrapper blk_pdiscard(BlockBackend *blk, int64_t offset,
int64_t bytes);
int co_wrapper_mixed blk_pdiscard(BlockBackend *blk, int64_t offset,
int64_t bytes);
int coroutine_fn blk_co_pdiscard(BlockBackend *blk, int64_t offset,
int64_t bytes);
int generated_co_wrapper blk_flush(BlockBackend *blk);
int co_wrapper_mixed blk_flush(BlockBackend *blk);
int coroutine_fn blk_co_flush(BlockBackend *blk);
int generated_co_wrapper blk_ioctl(BlockBackend *blk, unsigned long int req,
void *buf);
int co_wrapper_mixed blk_ioctl(BlockBackend *blk, unsigned long int req,
void *buf);
int coroutine_fn blk_co_ioctl(BlockBackend *blk, unsigned long int req,
void *buf);
int generated_co_wrapper blk_truncate(BlockBackend *blk, int64_t offset,
bool exact, PreallocMode prealloc,
BdrvRequestFlags flags, Error **errp);
int co_wrapper_mixed blk_truncate(BlockBackend *blk, int64_t offset,
bool exact, PreallocMode prealloc,
BdrvRequestFlags flags, Error **errp);
int coroutine_fn blk_co_truncate(BlockBackend *blk, int64_t offset, bool exact,
PreallocMode prealloc, BdrvRequestFlags flags,
Error **errp);

6
scripts/block-coroutine-wrapper.py
View File

@ -2,7 +2,7 @@
"""Generate coroutine wrappers for block subsystem.
The program parses one or several concatenated c files from stdin,
searches for functions with the 'generated_co_wrapper' specifier
searches for functions with the 'co_wrapper_mixed' specifier
and generates corresponding wrappers on stdout.
Usage: block-coroutine-wrapper.py generated-file.c FILE.[ch]...
@ -74,8 +74,8 @@ class FuncDecl:
return '\n'.join(format.format_map(arg.__dict__) for arg in self.args)
# Match wrappers declared with a generated_co_wrapper mark
func_decl_re = re.compile(r'^int\s*generated_co_wrapper\s*'
# Match wrappers declared with a co_wrapper_mixed mark
func_decl_re = re.compile(r'^int\s*co_wrapper_mixed\s*'
r'(?P<wrapper_name>[a-z][a-z0-9_]*)'
r'\((?P<args>[^)]*)\);$', re.MULTILINE)