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qapi: Generate QAPIEvent stuff into separate files 

Having to include qapi-events.h just for QAPIEvent is suboptimal, but
quite tolerable now.  It'll become problematic when we have events
conditional on the target, because then qapi-events.h won't be usable
from target-independent code anymore.  Avoid that by generating it
into separate files.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Message-Id: <20190214152251.2073-6-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2019-02-14 16:22:38 +01:00
parent c2e196a9b4
commit 5d75648b56
9 changed files with 60 additions and 29 deletions
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1
.gitignore vendored
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@ -32,6 +32,7 @@
/qapi/qapi-builtin-visit.[ch]
/qapi/qapi-commands-*.[ch]
/qapi/qapi-commands.[ch]
/qapi/qapi-emit-events.[ch]
/qapi/qapi-events-*.[ch]
/qapi/qapi-events.[ch]
/qapi/qapi-introspect.[ch]

1
Makefile
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@ -101,6 +101,7 @@ GENERATED_QAPI_FILES += $(QAPI_MODULES:%=qapi/qapi-visit-%.c)
GENERATED_QAPI_FILES += qapi/qapi-commands.h qapi/qapi-commands.c
GENERATED_QAPI_FILES += $(QAPI_MODULES:%=qapi/qapi-commands-%.h)
GENERATED_QAPI_FILES += $(QAPI_MODULES:%=qapi/qapi-commands-%.c)
GENERATED_QAPI_FILES += qapi/qapi-emit-events.h qapi/qapi-emit-events.c
GENERATED_QAPI_FILES += qapi/qapi-events.h qapi/qapi-events.c
GENERATED_QAPI_FILES += $(QAPI_MODULES:%=qapi/qapi-events-%.h)
GENERATED_QAPI_FILES += $(QAPI_MODULES:%=qapi/qapi-events-%.c)

1
Makefile.objs
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@ -12,6 +12,7 @@ util-obj-y += $(QAPI_MODULES:%=qapi/qapi-types-%.o)
util-obj-y += qapi/qapi-builtin-visit.o
util-obj-y += qapi/qapi-visit.o
util-obj-y += $(QAPI_MODULES:%=qapi/qapi-visit-%.o)
util-obj-y += qapi/qapi-emit-events.o
util-obj-y += qapi/qapi-events.o
util-obj-y += $(QAPI_MODULES:%=qapi/qapi-events-%.o)
util-obj-y += qapi/qapi-introspect.o

46
docs/devel/qapi-code-gen.txt
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@ -1381,11 +1381,15 @@ qapi_event_send_EVENT().
The following files are created:
$(prefix)qapi-events.h - Function prototypes for each event type, plus an
enumeration of all event names
$(prefix)qapi-events.h - Function prototypes for each event type
$(prefix)qapi-events.c - Implementation of functions to send an event
$(prefix)qapi-emit-events.h - Enumeration of all event names, and
common event code declarations
$(prefix)qapi-emit-events.c - Common event code definitions
Example:
$ cat qapi-generated/example-qapi-events.h
@ -1397,21 +1401,8 @@ Example:
#include "qapi/util.h"
#include "example-qapi-types.h"
void qapi_event_send_my_event(void);
typedef enum example_QAPIEvent {
EXAMPLE_QAPI_EVENT_MY_EVENT,
EXAMPLE_QAPI_EVENT__MAX,
} example_QAPIEvent;
#define example_QAPIEvent_str(val) \
qapi_enum_lookup(&example_QAPIEvent_lookup, (val))
extern const QEnumLookup example_QAPIEvent_lookup;
void example_qapi_event_emit(example_QAPIEvent event, QDict *qdict);
#endif /* EXAMPLE_QAPI_EVENTS_H */
$ cat qapi-generated/example-qapi-events.c
[Uninteresting stuff omitted...]
@ -1427,6 +1418,31 @@ Example:
qobject_unref(qmp);
}
[Uninteresting stuff omitted...]
$ cat qapi-generated/example-qapi-emit-events.h
[Uninteresting stuff omitted...]
#ifndef EXAMPLE_QAPI_EMIT_EVENTS_H
#define EXAMPLE_QAPI_EMIT_EVENTS_H
#include "qapi/util.h"
typedef enum example_QAPIEvent {
EXAMPLE_QAPI_EVENT_MY_EVENT,
EXAMPLE_QAPI_EVENT__MAX,
} example_QAPIEvent;
#define example_QAPIEvent_str(val) \
qapi_enum_lookup(&example_QAPIEvent_lookup, (val))
extern const QEnumLookup example_QAPIEvent_lookup;
void example_qapi_event_emit(example_QAPIEvent event, QDict *qdict);
#endif /* EXAMPLE_QAPI_EMIT_EVENTS_H */
$ cat qapi-generated/example-qapi-emit-events.c
[Uninteresting stuff omitted...]
const QEnumLookup example_QAPIEvent_lookup = {
.array = (const char *const[]) {
[EXAMPLE_QAPI_EVENT_MY_EVENT] = "MY_EVENT",

2
monitor.c
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@ -75,7 +75,7 @@
#include "qemu/thread.h"
#include "block/qapi.h"
#include "qapi/qapi-commands.h"
#include "qapi/qapi-events.h"
#include "qapi/qapi-emit-events.h"
#include "qapi/error.h"
#include "qapi/qmp-event.h"
#include "qapi/qapi-introspect.h"

32
scripts/qapi/events.py
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@ -143,12 +143,14 @@ class QAPISchemaGenEventVisitor(QAPISchemaModularCVisitor):
self._event_emit_name = c_name(prefix + 'qapi_event_emit')
def _begin_user_module(self, name):
events = self._module_basename('qapi-events', name)
types = self._module_basename('qapi-types', name)
visit = self._module_basename('qapi-visit', name)
self._genc.add(mcgen('''
#include "qemu/osdep.h"
#include "qemu-common.h"
#include "%(prefix)sqapi-events.h"
#include "%(prefix)sqapi-emit-events.h"
#include "%(events)s.h"
#include "%(visit)s.h"
#include "qapi/error.h"
#include "qapi/qmp/qdict.h"
@ -156,26 +158,34 @@ class QAPISchemaGenEventVisitor(QAPISchemaModularCVisitor):
#include "qapi/qmp-event.h"
''',
visit=visit, prefix=self._prefix))
events=events, visit=visit,
prefix=self._prefix))
self._genh.add(mcgen('''
#include "qapi/util.h"
#include "%(types)s.h"
''',
types=types))
def visit_end(self):
(genc, genh) = self._module[self._main_module]
genh.add(gen_enum(self._event_enum_name,
self._event_enum_members))
genc.add(gen_enum_lookup(self._event_enum_name,
self._event_enum_members))
genh.add(mcgen('''
self._add_system_module('emit', ' * QAPI Events emission')
self._genc.preamble_add(mcgen('''
#include "qemu/osdep.h"
#include "%(prefix)sqapi-emit-events.h"
''',
prefix=self._prefix))
self._genh.preamble_add(mcgen('''
#include "qapi/util.h"
'''))
self._genh.add(gen_enum(self._event_enum_name,
self._event_enum_members))
self._genc.add(gen_enum_lookup(self._event_enum_name,
self._event_enum_members))
self._genh.add(mcgen('''
void %(event_emit)s(%(event_enum)s event, QDict *qdict);
''',
event_emit=self._event_emit_name,
event_enum=self._event_enum_name))
event_emit=self._event_emit_name,
event_enum=self._event_enum_name))
def visit_event(self, name, info, ifcond, arg_type, boxed):
with ifcontext(ifcond, self._genh, self._genc):

2
stubs/monitor.c
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@ -1,6 +1,6 @@
#include "qemu/osdep.h"
#include "qapi/error.h"
#include "qapi/qapi-events.h"
#include "qapi/qapi-emit-events.h"
#include "qemu-common.h"
#include "monitor/monitor.h"

1
tests/test-qmp-event.c
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@ -21,6 +21,7 @@
#include "qapi/qmp/qstring.h"
#include "qapi/qmp-event.h"
#include "test-qapi-events.h"
#include "test-qapi-emit-events.h"
typedef struct TestEventData {
QDict *expect;

3
ui/vnc.c
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@ -35,7 +35,8 @@
#include "qemu/timer.h"
#include "qemu/acl.h"
#include "qemu/config-file.h"
#include "qapi/qapi-events.h"
#include "qapi/qapi-emit-events.h"
#include "qapi/qapi-events-ui.h"
#include "qapi/error.h"
#include "qapi/qapi-commands-ui.h"
#include "ui/input.h"