[PATCH v9 0/7] coroutines: generate wrapper code

[Vladimir Sementsov-Ogievskiy]

Hi all!

The aim of the series is to reduce code-duplication and writing
parameters structure-packing by hand around coroutine function wrappers.

Benefits:
 - no code duplication
 - less indirection

v9: Thanks to Eric, I used commit message tweaks and rebase-conflict solving 
from his git.
01: add Philippe's, Stefan's r-bs
02: - add Philippe's, Stefan's r-bs
    - commit message tweaks stolen from Eric's git :)
03: add Philippe's, Stefan's r-bs
04: - wording/grammar by Eric (partly, stolen from repo)
    - ref new file in docs/devel/index.rst
    - use 644 rights and recommended header for python script
    - call gen_header() once
    - rename gen_wrappers_file to gen_wrappers
05: add Stefan's r-b
06: add Philippe's, Stefan's r-bs
07: Stefan's r-b

Vladimir Sementsov-Ogievskiy (7):
  block: return error-code from bdrv_invalidate_cache
  block/io: refactor coroutine wrappers
  block: declare some coroutine functions in block/coroutines.h
  scripts: add block-coroutine-wrapper.py
  block: generate coroutine-wrapper code
  block: drop bdrv_prwv
  block/io: refactor save/load vmstate

 docs/devel/block-coroutine-wrapper.rst |  54 ++++
 docs/devel/index.rst                   |   1 +
 block/block-gen.h                      |  49 ++++
 block/coroutines.h                     |  65 +++++
 include/block/block.h                  |  34 ++-
 block.c                                |  97 +------
 block/io.c                             | 337 ++++---------------------
 tests/test-bdrv-drain.c                |   2 +-
 block/meson.build                      |   8 +
 scripts/block-coroutine-wrapper.py     | 188 ++++++++++++++
 10 files changed, 454 insertions(+), 381 deletions(-)
 create mode 100644 docs/devel/block-coroutine-wrapper.rst
 create mode 100644 block/block-gen.h
 create mode 100644 block/coroutines.h
 create mode 100644 scripts/block-coroutine-wrapper.py

-- 
2.21.3