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[RFC PATCH 10/12] qapi: Generate QOM config marshalling code
From: |
Kevin Wolf |
Subject: |
[RFC PATCH 10/12] qapi: Generate QOM config marshalling code |
Date: |
Wed, 3 Nov 2021 18:30:00 +0100 |
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
---
backends/rng-random.c | 17 ++------
backends/rng.c | 17 ++------
scripts/qapi/main.py | 2 +
scripts/qapi/qom.py | 91 +++++++++++++++++++++++++++++++++++++++++++
qapi/meson.build | 3 ++
5 files changed, 104 insertions(+), 26 deletions(-)
create mode 100644 scripts/qapi/qom.py
diff --git a/backends/rng-random.c b/backends/rng-random.c
index b221308091..35738df3c6 100644
--- a/backends/rng-random.c
+++ b/backends/rng-random.c
@@ -14,6 +14,7 @@
#include "sysemu/rng-random.h"
#include "sysemu/rng.h"
#include "qapi/error.h"
+#include "qapi/qapi-qom-qom.h"
#include "qapi/visitor.h"
#include "qapi/qmp/qerror.h"
#include "qemu/main-loop.h"
@@ -90,7 +91,8 @@ static char *rng_random_get_filename(Object *obj, Error
**errp)
return g_strdup(s->filename);
}
-static bool rng_random_config(Object *obj, const char *filename, Error **errp)
+bool qom_rng_random_config(Object *obj, bool has_filename,
+ const char *filename, Error **errp)
{
RngRandom *s = RNG_RANDOM(obj);
@@ -100,17 +102,6 @@ static bool rng_random_config(Object *obj, const char
*filename, Error **errp)
return true;
}
-static bool rng_random_marshal_config(Object *obj, Visitor *v, Error **errp)
-{
- g_autofree char *filename = NULL;
-
- if (!visit_type_str(v, "filename", &filename, errp)) {
- return false;
- }
-
- return rng_random_config(obj, filename, errp);
-}
-
static void rng_random_init(Object *obj)
{
RngRandom *s = RNG_RANDOM(obj);
@@ -148,7 +139,7 @@ static const TypeInfo rng_random_info = {
.instance_size = sizeof(RngRandom),
.class_init = rng_random_class_init,
.instance_init = rng_random_init,
- .instance_config = rng_random_marshal_config,
+ .instance_config = qom_rng_random_marshal_config,
.instance_finalize = rng_random_finalize,
};
diff --git a/backends/rng.c b/backends/rng.c
index 840daf0392..d560bd7b5d 100644
--- a/backends/rng.c
+++ b/backends/rng.c
@@ -13,6 +13,7 @@
#include "qemu/osdep.h"
#include "sysemu/rng.h"
#include "qapi/error.h"
+#include "qapi/qapi-qom-qom.h"
#include "qapi/qmp/qerror.h"
#include "qemu/module.h"
#include "qom/object_interfaces.h"
@@ -77,24 +78,14 @@ static void rng_backend_complete(UserCreatable *uc, Error
**errp)
rng_backend_prop_set_opened(OBJECT(uc), true, errp);
}
-static bool rng_backend_config(Object *obj, bool opened, Error **errp)
+bool qom_rng_backend_config(Object *obj, bool has_opened, bool opened,
+ Error **errp)
{
ERRP_GUARD();
rng_backend_prop_set_opened(obj, opened, errp);
return *errp == NULL;
}
-static bool rng_backend_marshal_config(Object *obj, Visitor *v, Error **errp)
-{
- bool opened;
-
- if (!visit_type_bool(v, "opened", &opened, errp)) {
- return false;
- }
-
- return rng_backend_config(obj, opened, errp);
-}
-
static void rng_backend_free_request(RngRequest *req)
{
g_free(req->data);
@@ -148,7 +139,7 @@ static const TypeInfo rng_backend_info = {
.parent = TYPE_OBJECT,
.instance_size = sizeof(RngBackend),
.instance_init = rng_backend_init,
- .instance_config = rng_backend_marshal_config,
+ .instance_config = qom_rng_backend_marshal_config,
.instance_finalize = rng_backend_finalize,
.class_size = sizeof(RngBackendClass),
.class_init = rng_backend_class_init,
diff --git a/scripts/qapi/main.py b/scripts/qapi/main.py
index f2ea6e0ce4..b6b4a4a74d 100644
--- a/scripts/qapi/main.py
+++ b/scripts/qapi/main.py
@@ -16,6 +16,7 @@
from .error import QAPIError
from .events import gen_events
from .introspect import gen_introspect
+from .qom import gen_qom
from .schema import QAPISchema
from .types import gen_types
from .visit import gen_visit
@@ -52,6 +53,7 @@ def generate(schema_file: str,
gen_commands(schema, output_dir, prefix)
gen_events(schema, output_dir, prefix)
gen_introspect(schema, output_dir, prefix, unmask)
+ gen_qom(schema, output_dir, prefix)
def main() -> int:
diff --git a/scripts/qapi/qom.py b/scripts/qapi/qom.py
new file mode 100644
index 0000000000..1cca94890f
--- /dev/null
+++ b/scripts/qapi/qom.py
@@ -0,0 +1,91 @@
+"""
+QAPI QOM boilerplate generator
+
+Copyright (c) 2021 Red Hat Inc.
+
+Authors:
+ Kevin Wolf <kwolf@redhat.com>
+
+This work is licensed under the terms of the GNU GPL, version 2.
+See the COPYING file in the top-level directory.
+"""
+
+from .common import c_name, mcgen
+from .gen import (
+ build_params,
+ QAPISchemaModularCVisitor,
+)
+from .schema import (
+ QAPISchema,
+ QAPISchemaClass,
+)
+
+
+def gen_config_decl(c: QAPISchemaClass) -> str:
+ params = build_params(c.config_type, c.config_boxed, 'Error **errp')
+ return mcgen('''
+bool qom_%(name)s_marshal_config(Object *obj, Visitor *v, Error **errp);
+bool qom_%(name)s_config(Object *obj, %(params)s);
+''', name=c.c_name(), params=params)
+
+
+def gen_config_call(c: QAPISchemaClass) -> str:
+ if c.config_boxed:
+ argstr = '&config, '
+ else:
+ assert not c.config_type.variants
+ argstr = ''
+ for m in c.config_type.members:
+ if m.optional:
+ argstr += 'config.has_%s, ' % c_name(m.name)
+ argstr += 'config.%s, ' % c_name(m.name)
+
+ return f'qom_{c.c_name()}_config(obj, {argstr}errp)'
+
+def gen_config(c: QAPISchemaClass) -> str:
+ return mcgen('''
+bool qom_%(qom_type)s_marshal_config(Object *obj, Visitor *v, Error **errp)
+{
+ %(config_name)s config = {0};
+
+ if (!visit_type_%(config_name)s_members(v, &config, errp)) {
+ return false;
+ }
+
+ return %(call)s;
+}
+
+''', qom_type=c.c_name(), config_name=c.config_type.c_name(),
+ call=gen_config_call(c))
+
+
+class QAPISchemaGenQOMVisitor(QAPISchemaModularCVisitor):
+
+ def __init__(self, prefix: str):
+ super().__init__(
+ prefix, 'qapi-qom', ' * Schema-defined QOM types',
+ None, __doc__)
+
+ def _begin_user_module(self, name: str) -> None:
+ qom = self._module_basename('qapi-qom', name)
+ types = self._module_basename('qapi-types', name)
+ visit = self._module_basename('qapi-visit', name)
+ self._genc.add(mcgen('''
+#include "qemu/osdep.h"
+#include "qapi/error.h"
+#include "%(qom)s.h"
+#include "%(types)s.h"
+#include "%(visit)s.h"
+
+''', types=types, visit=visit, qom=qom))
+
+ def visit_class(self, c: QAPISchemaClass) -> None:
+ if c.config_type:
+ self._genh.add(gen_config_decl(c))
+ self._genc.add(gen_config(c))
+
+
+def gen_qom(schema: QAPISchema, output_dir: str, prefix: str) -> None:
+ vis = QAPISchemaGenQOMVisitor(prefix)
+ schema.visit(vis)
+ vis.write(output_dir)
diff --git a/qapi/meson.build b/qapi/meson.build
index c356a385e3..10c412f1ad 100644
--- a/qapi/meson.build
+++ b/qapi/meson.build
@@ -87,6 +87,7 @@ qapi_nonmodule_outputs = [
'qapi-init-commands.h', 'qapi-init-commands.c',
'qapi-events.h', 'qapi-events.c',
'qapi-emit-events.c', 'qapi-emit-events.h',
+ 'qapi-qom.h', 'qapi-qom.c',
]
# First build all sources
@@ -111,6 +112,8 @@ foreach module : qapi_all_modules
'qapi-events-@0@.h'.format(module),
'qapi-commands-@0@.c'.format(module),
'qapi-commands-@0@.h'.format(module),
+ 'qapi-qom-@0@.c'.format(module),
+ 'qapi-qom-@0@.h'.format(module),
]
endif
if module.endswith('-target')
--
2.31.1
- [RFC PATCH 05/12] rng-random: Implement .instance_config, (continued)
- [RFC PATCH 05/12] rng-random: Implement .instance_config, Kevin Wolf, 2021/11/03
- [RFC PATCH 06/12] rng-backend: Implement .instance_config, Kevin Wolf, 2021/11/03
- [RFC PATCH 07/12] qapi: Allow defining QOM classes, Kevin Wolf, 2021/11/03
- [RFC PATCH 08/12] qapi: Create qom-config:... type for classes, Kevin Wolf, 2021/11/03
- [RFC PATCH 09/12] qapi/qom: Convert rng-backend/random to class, Kevin Wolf, 2021/11/03
- [RFC PATCH 12/12] qapi/qom: Add class definition for rng-egd, Kevin Wolf, 2021/11/03
- [RFC PATCH 11/12] qapi/qom: Add class definition for rng-builtin, Kevin Wolf, 2021/11/03
- [RFC PATCH 10/12] qapi: Generate QOM config marshalling code,
Kevin Wolf <=
- Re: [RFC PATCH 00/12] QOM/QAPI integration part 1, Paolo Bonzini, 2021/11/03
- Re: [RFC PATCH 00/12] QOM/QAPI integration part 1, Damien Hedde, 2021/11/04
- Re: [RFC PATCH 00/12] QOM/QAPI integration part 1, Kevin Wolf, 2021/11/05
Re: [RFC PATCH 00/12] QOM/QAPI integration part 1, Markus Armbruster, 2021/11/23