aaaa20b69b
We have a very frequent pattern of creating a coroutine from a function
with several arguments:
- create a structure to pack parameters
- create _entry function to call original function taking parameters
from struct
- do different magic to handle completion: set ret to NOT_DONE or
EINPROGRESS or use separate bool field
- fill the struct and create coroutine from _entry function with this
struct as a parameter
- do coroutine enter and BDRV_POLL_WHILE loop
Let's reduce code duplication by generating coroutine wrappers.
This patch adds scripts/block-coroutine-wrapper.py together with some
friends, which will generate functions with declared prototypes marked
by the 'generated_co_wrapper' specifier.
The usage of new code generation is as follows:
1. define the coroutine function somewhere
int coroutine_fn bdrv_co_NAME(...) {...}
2. declare in some header file
int generated_co_wrapper bdrv_NAME(...);
with same list of parameters (generated_co_wrapper is
defined in "include/block/block.h").
3. Make sure the block_gen_c declaration in block/meson.build
mentions the file with your marker function.
Still, no function is now marked, this work is for the following
commit.
Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20200924185414.28642-5-vsementsov@virtuozzo.com>
[Added encoding='utf-8' to open() calls as requested by Vladimir. Fixed
typo and grammar issues pointed out by Eric Blake. Removed clang-format
dependency that caused build test issues.
--Stefan]
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
126 lines
3.7 KiB
Meson
126 lines
3.7 KiB
Meson
block_ss.add(genh)
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block_ss.add(files(
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'accounting.c',
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'aio_task.c',
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'amend.c',
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'backup.c',
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'backup-top.c',
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'blkdebug.c',
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'blklogwrites.c',
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'blkreplay.c',
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'blkverify.c',
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'block-backend.c',
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'block-copy.c',
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'commit.c',
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'copy-on-read.c',
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'create.c',
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'crypto.c',
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'dirty-bitmap.c',
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'filter-compress.c',
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'io.c',
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'mirror.c',
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'nbd.c',
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'null.c',
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'qapi.c',
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'qcow2-bitmap.c',
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'qcow2-cache.c',
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'qcow2-cluster.c',
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'qcow2-refcount.c',
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'qcow2-snapshot.c',
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'qcow2-threads.c',
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'qcow2.c',
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'quorum.c',
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'raw-format.c',
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'snapshot.c',
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'throttle-groups.c',
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'throttle.c',
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'vhdx-endian.c',
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'vhdx-log.c',
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'vhdx.c',
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'vmdk.c',
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'vpc.c',
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'write-threshold.c',
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), zstd, zlib)
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block_ss.add(when: 'CONFIG_QCOW1', if_true: files('qcow.c'))
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block_ss.add(when: 'CONFIG_VDI', if_true: files('vdi.c'))
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block_ss.add(when: 'CONFIG_CLOOP', if_true: files('cloop.c'))
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block_ss.add(when: 'CONFIG_BOCHS', if_true: files('bochs.c'))
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block_ss.add(when: 'CONFIG_VVFAT', if_true: files('vvfat.c'))
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block_ss.add(when: 'CONFIG_DMG', if_true: files('dmg.c'))
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block_ss.add(when: 'CONFIG_QED', if_true: files(
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'qed-check.c',
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'qed-cluster.c',
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'qed-l2-cache.c',
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'qed-table.c',
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'qed.c',
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))
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block_ss.add(when: [libxml2, 'CONFIG_PARALLELS'], if_true: files('parallels.c'))
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block_ss.add(when: 'CONFIG_WIN32', if_true: files('file-win32.c', 'win32-aio.c'))
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block_ss.add(when: 'CONFIG_POSIX', if_true: [files('file-posix.c'), coref, iokit])
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block_ss.add(when: 'CONFIG_LIBISCSI', if_true: files('iscsi-opts.c'))
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block_ss.add(when: 'CONFIG_LINUX', if_true: files('nvme.c'))
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block_ss.add(when: 'CONFIG_REPLICATION', if_true: files('replication.c'))
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block_ss.add(when: 'CONFIG_SHEEPDOG', if_true: files('sheepdog.c'))
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block_ss.add(when: ['CONFIG_LINUX_AIO', libaio], if_true: files('linux-aio.c'))
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block_ss.add(when: ['CONFIG_LINUX_IO_URING', linux_io_uring], if_true: files('io_uring.c'))
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block_modules = {}
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modsrc = []
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foreach m : [
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['CONFIG_CURL', 'curl', [curl, glib], 'curl.c'],
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['CONFIG_GLUSTERFS', 'gluster', glusterfs, 'gluster.c'],
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['CONFIG_LIBISCSI', 'iscsi', libiscsi, 'iscsi.c'],
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['CONFIG_LIBNFS', 'nfs', libnfs, 'nfs.c'],
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['CONFIG_LIBSSH', 'ssh', libssh, 'ssh.c'],
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['CONFIG_RBD', 'rbd', rbd, 'rbd.c'],
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]
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if config_host.has_key(m[0])
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if enable_modules
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modsrc += files(m[3])
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endif
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module_ss = ss.source_set()
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module_ss.add(when: m[2], if_true: files(m[3]))
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block_modules += {m[1] : module_ss}
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endif
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endforeach
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# those are not exactly regular block modules, so treat them apart
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if 'CONFIG_DMG' in config_host
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foreach m : [
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['CONFIG_LZFSE', 'dmg-lzfse', liblzfse, 'dmg-lzfse.c'],
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['CONFIG_BZIP2', 'dmg-bz2', [glib, libbzip2], 'dmg-bz2.c']
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]
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if config_host.has_key(m[0])
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module_ss = ss.source_set()
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module_ss.add(when: m[2], if_true: files(m[3]))
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block_modules += {m[1] : module_ss}
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endif
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endforeach
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endif
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module_block_py = find_program('../scripts/modules/module_block.py')
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module_block_h = custom_target('module_block.h',
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output: 'module_block.h',
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input: modsrc,
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command: [module_block_py, '@OUTPUT0@', modsrc])
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block_ss.add(module_block_h)
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wrapper_py = find_program('../scripts/block-coroutine-wrapper.py')
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block_gen_c = custom_target('block-gen.c',
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output: 'block-gen.c',
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input: files('../include/block/block.h',
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'coroutines.h'),
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command: [wrapper_py, '@OUTPUT@', '@INPUT@'])
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block_ss.add(block_gen_c)
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block_ss.add(files('stream.c'))
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softmmu_ss.add(files('qapi-sysemu.c'))
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subdir('export')
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subdir('monitor')
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modules += {'block': block_modules}
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