From patchwork Mon Feb 10 08:39:46 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Markus Armbruster X-Patchwork-Id: 13967474 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 18D82C02198 for ; Mon, 10 Feb 2025 08:40:45 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1thPKs-0000iw-Qc; Mon, 10 Feb 2025 03:40:11 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1thPKj-0000h3-8Q for qemu-devel@nongnu.org; Mon, 10 Feb 2025 03:40:02 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.129.124]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1thPKg-0003Ee-MZ for qemu-devel@nongnu.org; Mon, 10 Feb 2025 03:40:00 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1739176797; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=Ibwovav2QmVXruxXioDLcqYE+c1IEWoyAmSmHhJ9qk0=; b=Wpq2NOBzEh9ybQkl0aj/sGND33nvxJKEeNXFbBPfXyspZrNqWwz8514PHQlnjbBcKYsRtB vsBiMdAtxuxV7dRdhnzfOpEGfunjghZg00jNtpoiiQNrlB5z6mMKuV4epAKPBwvxsVeaC+ nmxvNNfdnBnSq7psJl5okUnNA0yIv54= Received: from mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (ec2-54-186-198-63.us-west-2.compute.amazonaws.com [54.186.198.63]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.3, cipher=TLS_AES_256_GCM_SHA384) id us-mta-621-8Onl5epOPdSaorrJCYDe-g-1; Mon, 10 Feb 2025 03:39:53 -0500 X-MC-Unique: 8Onl5epOPdSaorrJCYDe-g-1 X-Mimecast-MFC-AGG-ID: 8Onl5epOPdSaorrJCYDe-g Received: from mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com [10.30.177.93]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by mx-prod-mc-03.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id AE76319560B0 for ; Mon, 10 Feb 2025 08:39:52 +0000 (UTC) Received: from blackfin.pond.sub.org (unknown [10.45.242.22]) by mx-prod-int-06.mail-002.prod.us-west-2.aws.redhat.com (Postfix) with ESMTPS id 29231180087A for ; Mon, 10 Feb 2025 08:39:52 +0000 (UTC) Received: by blackfin.pond.sub.org (Postfix, from userid 1000) id B766E21E6881; Mon, 10 Feb 2025 09:39:46 +0100 (CET) From: Markus Armbruster To: qemu-devel@nongnu.org Cc: stefanha@redhat.com, =?utf-8?q?Daniel_P=2E_Berrang=C3=A9?= Subject: [PULL 6/6] qapi: expose all schema features to code Date: Mon, 10 Feb 2025 09:39:46 +0100 Message-ID: <20250210083946.3553415-7-armbru@redhat.com> In-Reply-To: <20250210083946.3553415-1-armbru@redhat.com> References: <20250210083946.3553415-1-armbru@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.93 Received-SPF: pass client-ip=170.10.129.124; envelope-from=armbru@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -44 X-Spam_score: -4.5 X-Spam_bar: ---- X-Spam_report: (-4.5 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1.405, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=-1, RCVD_IN_MSPIKE_WL=-0.01, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Daniel P. Berrangé This replaces use of the constants from the QapiSpecialFeatures enum, with constants from the auto-generate QapiFeatures enum in qapi-features.h The 'deprecated' and 'unstable' features still have a little bit of special handling, being force defined to be the 1st + 2nd features in the enum, regardless of whether they're used in the schema. This retains compatibility with common code that references the features via the QapiSpecialFeatures constants. Signed-off-by: Daniel P. Berrangé Message-ID: <20250205123550.2754387-5-berrange@redhat.com> Reviewed-by: Markus Armbruster [Imports tidied up with isort] Signed-off-by: Markus Armbruster --- meson.build | 1 + scripts/qapi/commands.py | 1 + scripts/qapi/features.py | 48 ++++++++++++++++++++++++ scripts/qapi/gen.py | 6 +-- scripts/qapi/main.py | 2 + scripts/qapi/schema.py | 31 ++++++++++++++- scripts/qapi/types.py | 7 +++- scripts/qapi/visit.py | 3 +- tests/meson.build | 2 + tests/qapi-schema/features-too-many.err | 2 + tests/qapi-schema/features-too-many.json | 13 +++++++ tests/qapi-schema/features-too-many.out | 0 tests/qapi-schema/meson.build | 1 + 13 files changed, 110 insertions(+), 7 deletions(-) create mode 100644 scripts/qapi/features.py create mode 100644 tests/qapi-schema/features-too-many.err create mode 100644 tests/qapi-schema/features-too-many.json create mode 100644 tests/qapi-schema/features-too-many.out diff --git a/meson.build b/meson.build index 131b2225ab..ee59d647e4 100644 --- a/meson.build +++ b/meson.build @@ -3444,6 +3444,7 @@ qapi_gen_depends = [ meson.current_source_dir() / 'scripts/qapi/__init__.py', meson.current_source_dir() / 'scripts/qapi/schema.py', meson.current_source_dir() / 'scripts/qapi/source.py', meson.current_source_dir() / 'scripts/qapi/types.py', + meson.current_source_dir() / 'scripts/qapi/features.py', meson.current_source_dir() / 'scripts/qapi/visit.py', meson.current_source_dir() / 'scripts/qapi-gen.py' ] diff --git a/scripts/qapi/commands.py b/scripts/qapi/commands.py index d629d2d97e..bf88bfc442 100644 --- a/scripts/qapi/commands.py +++ b/scripts/qapi/commands.py @@ -355,6 +355,7 @@ def visit_begin(self, schema: QAPISchema) -> None: #include "qemu/osdep.h" #include "%(prefix)sqapi-commands.h" #include "%(prefix)sqapi-init-commands.h" +#include "%(prefix)sqapi-features.h" void %(c_prefix)sqmp_init_marshal(QmpCommandList *cmds) { diff --git a/scripts/qapi/features.py b/scripts/qapi/features.py new file mode 100644 index 0000000000..57563207a8 --- /dev/null +++ b/scripts/qapi/features.py @@ -0,0 +1,48 @@ +""" +QAPI features generator + +Copyright 2024 Red Hat + +This work is licensed under the terms of the GNU GPL, version 2. +# See the COPYING file in the top-level directory. +""" + +from typing import ValuesView + +from .common import c_enum_const, c_name +from .gen import QAPISchemaMonolithicCVisitor +from .schema import QAPISchema, QAPISchemaFeature + + +class QAPISchemaGenFeatureVisitor(QAPISchemaMonolithicCVisitor): + + def __init__(self, prefix: str): + super().__init__( + prefix, 'qapi-features', + ' * Schema-defined QAPI features', + __doc__) + + self.features: ValuesView[QAPISchemaFeature] + + def visit_begin(self, schema: QAPISchema) -> None: + self.features = schema.features() + self._genh.add("#include \"qapi/util.h\"\n\n") + + def visit_end(self) -> None: + self._genh.add("typedef enum {\n") + for f in self.features: + self._genh.add(f" {c_enum_const('qapi_feature', f.name)}") + if f.name in QAPISchemaFeature.SPECIAL_NAMES: + self._genh.add(f" = {c_enum_const('qapi', f.name)},\n") + else: + self._genh.add(",\n") + + self._genh.add("} " + c_name('QapiFeature') + ";\n") + + +def gen_features(schema: QAPISchema, + output_dir: str, + prefix: str) -> None: + vis = QAPISchemaGenFeatureVisitor(prefix) + schema.visit(vis) + vis.write(output_dir) diff --git a/scripts/qapi/gen.py b/scripts/qapi/gen.py index b51f8d955e..d3c56d45c8 100644 --- a/scripts/qapi/gen.py +++ b/scripts/qapi/gen.py @@ -42,9 +42,9 @@ def gen_features(features: Sequence[QAPISchemaFeature]) -> str: - featenum = [f"1u << {c_enum_const('qapi', feat.name)}" - for feat in features if feat.is_special()] - return ' | '.join(featenum) or '0' + feats = [f"1u << {c_enum_const('qapi_feature', feat.name)}" + for feat in features] + return ' | '.join(feats) or '0' class QAPIGen: diff --git a/scripts/qapi/main.py b/scripts/qapi/main.py index 316736b6a2..324081b9fc 100644 --- a/scripts/qapi/main.py +++ b/scripts/qapi/main.py @@ -15,6 +15,7 @@ from .common import must_match from .error import QAPIError from .events import gen_events +from .features import gen_features from .introspect import gen_introspect from .schema import QAPISchema from .types import gen_types @@ -49,6 +50,7 @@ def generate(schema_file: str, schema = QAPISchema(schema_file) gen_types(schema, output_dir, prefix, builtins) + gen_features(schema, output_dir, prefix) gen_visit(schema, output_dir, prefix, builtins) gen_commands(schema, output_dir, prefix, gen_tracing) gen_events(schema, output_dir, prefix) diff --git a/scripts/qapi/schema.py b/scripts/qapi/schema.py index e97c978d38..7f70969c09 100644 --- a/scripts/qapi/schema.py +++ b/scripts/qapi/schema.py @@ -29,6 +29,7 @@ List, Optional, Union, + ValuesView, cast, ) @@ -933,8 +934,11 @@ def connect_doc(self, doc: Optional[QAPIDoc]) -> None: class QAPISchemaFeature(QAPISchemaMember): role = 'feature' + # Features which are standardized across all schemas + SPECIAL_NAMES = ['deprecated', 'unstable'] + def is_special(self) -> bool: - return self.name in ('deprecated', 'unstable') + return self.name in QAPISchemaFeature.SPECIAL_NAMES class QAPISchemaObjectTypeMember(QAPISchemaMember): @@ -1138,6 +1142,16 @@ def __init__(self, fname: str): self._entity_list: List[QAPISchemaEntity] = [] self._entity_dict: Dict[str, QAPISchemaDefinition] = {} self._module_dict: Dict[str, QAPISchemaModule] = OrderedDict() + # NB, values in the dict will identify the first encountered + # usage of a named feature only + self._feature_dict: Dict[str, QAPISchemaFeature] = OrderedDict() + + # All schemas get the names defined in the QapiSpecialFeature enum. + # Rely on dict iteration order matching insertion order so that + # the special names are emitted first when generating code. + for f in QAPISchemaFeature.SPECIAL_NAMES: + self._feature_dict[f] = QAPISchemaFeature(f, None) + self._schema_dir = os.path.dirname(fname) self._make_module(QAPISchemaModule.BUILTIN_MODULE_NAME) self._make_module(fname) @@ -1147,6 +1161,9 @@ def __init__(self, fname: str): self._def_exprs(exprs) self.check() + def features(self) -> ValuesView[QAPISchemaFeature]: + return self._feature_dict.values() + def _def_entity(self, ent: QAPISchemaEntity) -> None: self._entity_list.append(ent) @@ -1258,6 +1275,12 @@ def _make_features( ) -> List[QAPISchemaFeature]: if features is None: return [] + + for f in features: + feat = QAPISchemaFeature(f['name'], info) + if feat.name not in self._feature_dict: + self._feature_dict[feat.name] = feat + return [QAPISchemaFeature(f['name'], info, QAPISchemaIfCond(f.get('if'))) for f in features] @@ -1485,6 +1508,12 @@ def check(self) -> None: for doc in self.docs: doc.check() + features = list(self._feature_dict.values()) + if len(features) > 64: + raise QAPISemError( + features[64].info, + "Maximum of 64 schema features is permitted") + def visit(self, visitor: QAPISchemaVisitor) -> None: visitor.visit_begin(self) for mod in self._module_dict.values(): diff --git a/scripts/qapi/types.py b/scripts/qapi/types.py index e4a1bb9f85..2bf7533828 100644 --- a/scripts/qapi/types.py +++ b/scripts/qapi/types.py @@ -304,11 +304,14 @@ def _begin_user_module(self, name: str) -> None: #include "qapi/dealloc-visitor.h" #include "%(types)s.h" #include "%(visit)s.h" +#include "%(prefix)sqapi-features.h" ''', - types=types, visit=visit)) + types=types, visit=visit, + prefix=self._prefix)) self._genh.preamble_add(mcgen(''' #include "qapi/qapi-builtin-types.h" -''')) +''', + prefix=self._prefix)) def visit_begin(self, schema: QAPISchema) -> None: # gen_object() is recursive, ensure it doesn't visit the empty type diff --git a/scripts/qapi/visit.py b/scripts/qapi/visit.py index 928273b9bb..36e240967b 100644 --- a/scripts/qapi/visit.py +++ b/scripts/qapi/visit.py @@ -356,8 +356,9 @@ def _begin_user_module(self, name: str) -> None: #include "qemu/osdep.h" #include "qapi/error.h" #include "%(visit)s.h" +#include "%(prefix)sqapi-features.h" ''', - visit=visit)) + visit=visit, prefix=self._prefix)) self._genh.preamble_add(mcgen(''' #include "qapi/qapi-builtin-visit.h" #include "%(types)s.h" diff --git a/tests/meson.build b/tests/meson.build index f96c1be574..c59619220f 100644 --- a/tests/meson.build +++ b/tests/meson.build @@ -16,6 +16,8 @@ test_qapi_outputs = [ 'test-qapi-events-sub-sub-module.h', 'test-qapi-events.c', 'test-qapi-events.h', + 'test-qapi-features.c', + 'test-qapi-features.h', 'test-qapi-init-commands.c', 'test-qapi-init-commands.h', 'test-qapi-introspect.c', diff --git a/tests/qapi-schema/features-too-many.err b/tests/qapi-schema/features-too-many.err new file mode 100644 index 0000000000..bbbd6e5202 --- /dev/null +++ b/tests/qapi-schema/features-too-many.err @@ -0,0 +1,2 @@ +features-too-many.json: In command 'go-fish': +features-too-many.json:2: Maximum of 64 schema features is permitted diff --git a/tests/qapi-schema/features-too-many.json b/tests/qapi-schema/features-too-many.json new file mode 100644 index 0000000000..aab0a0b5f1 --- /dev/null +++ b/tests/qapi-schema/features-too-many.json @@ -0,0 +1,13 @@ +# Max 64 features, with 2 specials, so 63rd custom is invalid +{ 'command': 'go-fish', + 'features': [ + 'f00', 'f01', 'f02', 'f03', 'f04', 'f05', 'f06', 'f07', + 'f08', 'f09', 'f0a', 'f0b', 'f0c', 'f0d', 'f0e', 'f0f', + 'f10', 'f11', 'f12', 'f13', 'f14', 'f15', 'f16', 'f17', + 'f18', 'f19', 'f1a', 'f1b', 'f1c', 'f1d', 'f1e', 'f1f', + 'f20', 'f21', 'f22', 'f23', 'f24', 'f25', 'f26', 'f27', + 'f28', 'f29', 'f2a', 'f2b', 'f2c', 'f2d', 'f2e', 'f2f', + 'f30', 'f31', 'f32', 'f33', 'f34', 'f35', 'f36', 'f37', + 'f38', 'f39', 'f3a', 'f3b', 'f3c', 'f3d', 'f3e' + ] +} diff --git a/tests/qapi-schema/features-too-many.out b/tests/qapi-schema/features-too-many.out new file mode 100644 index 0000000000..e69de29bb2 diff --git a/tests/qapi-schema/meson.build b/tests/qapi-schema/meson.build index 0f479d9317..9577178b6f 100644 --- a/tests/qapi-schema/meson.build +++ b/tests/qapi-schema/meson.build @@ -105,6 +105,7 @@ schemas = [ 'event-case.json', 'event-member-invalid-dict.json', 'event-nest-struct.json', + 'features-too-many.json', 'features-bad-type.json', 'features-deprecated-type.json', 'features-duplicate-name.json',