mirror of
https://github.com/xemu-project/xemu.git
synced 2024-12-01 07:21:09 +00:00
12f8e1b9ff
Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com>
300 lines
7.0 KiB
Python
300 lines
7.0 KiB
Python
#
|
|
# QAPI event generator
|
|
#
|
|
# Copyright (c) 2014 Wenchao Xia
|
|
#
|
|
# Authors:
|
|
# Wenchao Xia <wenchaoqemu@gmail.com>
|
|
#
|
|
# This work is licensed under the terms of the GNU GPL, version 2.
|
|
# See the COPYING file in the top-level directory.
|
|
|
|
from ordereddict import OrderedDict
|
|
from qapi import *
|
|
|
|
def _generate_event_api_name(event_name, params):
|
|
api_name = "void qapi_event_send_%s(" % c_name(event_name).lower();
|
|
l = len(api_name)
|
|
|
|
if params:
|
|
for argname, argentry, optional in parse_args(params):
|
|
if optional:
|
|
api_name += "bool has_%s,\n" % c_name(argname)
|
|
api_name += "".ljust(l)
|
|
|
|
api_name += "%s %s,\n" % (c_type(argentry, is_param=True),
|
|
c_name(argname))
|
|
api_name += "".ljust(l)
|
|
|
|
api_name += "Error **errp)"
|
|
return api_name;
|
|
|
|
|
|
# Following are the core functions that generate C APIs to emit event.
|
|
|
|
def generate_event_declaration(api_name):
|
|
return mcgen('''
|
|
|
|
%(api_name)s;
|
|
''',
|
|
api_name = api_name)
|
|
|
|
def generate_event_implement(api_name, event_name, params):
|
|
# step 1: declare any variables
|
|
ret = mcgen("""
|
|
|
|
%(api_name)s
|
|
{
|
|
QDict *qmp;
|
|
Error *local_err = NULL;
|
|
QMPEventFuncEmit emit;
|
|
""",
|
|
api_name = api_name)
|
|
|
|
if params:
|
|
ret += mcgen("""
|
|
QmpOutputVisitor *qov;
|
|
Visitor *v;
|
|
QObject *obj;
|
|
|
|
""")
|
|
|
|
# step 2: check emit function, create a dict
|
|
ret += mcgen("""
|
|
emit = qmp_event_get_func_emit();
|
|
if (!emit) {
|
|
return;
|
|
}
|
|
|
|
qmp = qmp_event_build_dict("%(event_name)s");
|
|
|
|
""",
|
|
event_name = event_name)
|
|
|
|
# step 3: visit the params if params != None
|
|
if params:
|
|
ret += mcgen("""
|
|
qov = qmp_output_visitor_new();
|
|
g_assert(qov);
|
|
|
|
v = qmp_output_get_visitor(qov);
|
|
g_assert(v);
|
|
|
|
/* Fake visit, as if all members are under a structure */
|
|
visit_start_struct(v, NULL, "", "%(event_name)s", 0, &local_err);
|
|
if (local_err) {
|
|
goto clean;
|
|
}
|
|
|
|
""",
|
|
event_name = event_name)
|
|
|
|
for argname, argentry, optional in parse_args(params):
|
|
if optional:
|
|
ret += mcgen("""
|
|
if (has_%(var)s) {
|
|
""",
|
|
var = c_name(argname))
|
|
push_indent()
|
|
|
|
if argentry == "str":
|
|
var_type = "(char **)"
|
|
else:
|
|
var_type = ""
|
|
|
|
ret += mcgen("""
|
|
visit_type_%(type)s(v, %(var_type)s&%(var)s, "%(name)s", &local_err);
|
|
if (local_err) {
|
|
goto clean;
|
|
}
|
|
""",
|
|
var_type = var_type,
|
|
var = c_name(argname),
|
|
type = type_name(argentry),
|
|
name = argname)
|
|
|
|
if optional:
|
|
pop_indent()
|
|
ret += mcgen("""
|
|
}
|
|
""")
|
|
|
|
ret += mcgen("""
|
|
|
|
visit_end_struct(v, &local_err);
|
|
if (local_err) {
|
|
goto clean;
|
|
}
|
|
|
|
obj = qmp_output_get_qobject(qov);
|
|
g_assert(obj != NULL);
|
|
|
|
qdict_put_obj(qmp, "data", obj);
|
|
""")
|
|
|
|
# step 4: call qmp event api
|
|
ret += mcgen("""
|
|
emit(%(event_enum_value)s, qmp, &local_err);
|
|
|
|
""",
|
|
event_enum_value = event_enum_value)
|
|
|
|
# step 5: clean up
|
|
if params:
|
|
ret += mcgen("""
|
|
clean:
|
|
qmp_output_visitor_cleanup(qov);
|
|
""")
|
|
ret += mcgen("""
|
|
error_propagate(errp, local_err);
|
|
QDECREF(qmp);
|
|
}
|
|
""")
|
|
|
|
return ret
|
|
|
|
|
|
# Following are the functions that generate an enum type for all defined
|
|
# events, similar to qapi-types.py. Here we already have enum name and
|
|
# values which were generated before and recorded in event_enum_*. It also
|
|
# works around the issue that "import qapi-types" can't work.
|
|
|
|
def generate_event_enum_decl(event_enum_name, event_enum_values):
|
|
lookup_decl = mcgen('''
|
|
|
|
extern const char *%(event_enum_name)s_lookup[];
|
|
''',
|
|
event_enum_name = event_enum_name)
|
|
|
|
enum_decl = mcgen('''
|
|
typedef enum %(event_enum_name)s
|
|
{
|
|
''',
|
|
event_enum_name = event_enum_name)
|
|
|
|
# append automatically generated _MAX value
|
|
enum_max_value = c_enum_const(event_enum_name, "MAX")
|
|
enum_values = event_enum_values + [ enum_max_value ]
|
|
|
|
i = 0
|
|
for value in enum_values:
|
|
enum_decl += mcgen('''
|
|
%(value)s = %(i)d,
|
|
''',
|
|
value = value,
|
|
i = i)
|
|
i += 1
|
|
|
|
enum_decl += mcgen('''
|
|
} %(event_enum_name)s;
|
|
''',
|
|
event_enum_name = event_enum_name)
|
|
|
|
return lookup_decl + enum_decl
|
|
|
|
def generate_event_enum_lookup(event_enum_name, event_enum_strings):
|
|
ret = mcgen('''
|
|
|
|
const char *%(event_enum_name)s_lookup[] = {
|
|
''',
|
|
event_enum_name = event_enum_name)
|
|
|
|
i = 0
|
|
for string in event_enum_strings:
|
|
ret += mcgen('''
|
|
"%(string)s",
|
|
''',
|
|
string = string)
|
|
|
|
ret += mcgen('''
|
|
NULL,
|
|
};
|
|
''')
|
|
return ret
|
|
|
|
(input_file, output_dir, do_c, do_h, prefix, dummy) = parse_command_line()
|
|
|
|
c_comment = '''
|
|
/*
|
|
* schema-defined QAPI event functions
|
|
*
|
|
* Copyright (c) 2014 Wenchao Xia
|
|
*
|
|
* Authors:
|
|
* Wenchao Xia <wenchaoqemu@gmail.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
'''
|
|
h_comment = '''
|
|
/*
|
|
* schema-defined QAPI event functions
|
|
*
|
|
* Copyright (c) 2014 Wenchao Xia
|
|
*
|
|
* Authors:
|
|
* Wenchao Xia <wenchaoqemu@gmail.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
'''
|
|
|
|
(fdef, fdecl) = open_output(output_dir, do_c, do_h, prefix,
|
|
'qapi-event.c', 'qapi-event.h',
|
|
c_comment, h_comment)
|
|
|
|
fdef.write(mcgen('''
|
|
#include "qemu-common.h"
|
|
#include "%(prefix)sqapi-event.h"
|
|
#include "%(prefix)sqapi-visit.h"
|
|
#include "qapi/qmp-output-visitor.h"
|
|
#include "qapi/qmp-event.h"
|
|
|
|
''',
|
|
prefix=prefix))
|
|
|
|
fdecl.write(mcgen('''
|
|
#include "qapi/error.h"
|
|
#include "qapi/qmp/qdict.h"
|
|
#include "%(prefix)sqapi-types.h"
|
|
|
|
''',
|
|
prefix=prefix))
|
|
|
|
exprs = parse_schema(input_file)
|
|
|
|
event_enum_name = prefix.upper().replace('-', '_') + "QAPIEvent"
|
|
event_enum_values = []
|
|
event_enum_strings = []
|
|
|
|
for expr in exprs:
|
|
if expr.has_key('event'):
|
|
event_name = expr['event']
|
|
params = expr.get('data')
|
|
if params and len(params) == 0:
|
|
params = None
|
|
|
|
api_name = _generate_event_api_name(event_name, params)
|
|
ret = generate_event_declaration(api_name)
|
|
fdecl.write(ret)
|
|
|
|
# We need an enum value per event
|
|
event_enum_value = c_enum_const(event_enum_name, event_name)
|
|
ret = generate_event_implement(api_name, event_name, params)
|
|
fdef.write(ret)
|
|
|
|
# Record it, and generate enum later
|
|
event_enum_values.append(event_enum_value)
|
|
event_enum_strings.append(event_name)
|
|
|
|
ret = generate_event_enum_decl(event_enum_name, event_enum_values)
|
|
fdecl.write(ret)
|
|
ret = generate_event_enum_lookup(event_enum_name, event_enum_strings)
|
|
fdef.write(ret)
|
|
|
|
close_output(fdef, fdecl)
|