Re: [Qemu-devel] [PATCH 02/20] monitor: Clean up after previous commit

[Markus Armbruster <armbru@redhat.com>]

Eric Blake <eblake@redhat.com> writes:

> On 05/22/2015 05:36 AM, Markus Armbruster wrote:
>> Signed-off-by: Markus Armbruster <armbru@redhat.com>
>> ---
>
> Commit message is sparse; I would have mentioned [1] and [2].
>
>>  monitor.c | 40 +++++++++++-----------------------------
>>  1 file changed, 11 insertions(+), 29 deletions(-)
>> 
>>  
>> -static void handler_audit(Monitor *mon, const mon_cmd_t *cmd, int ret)
>> -{
>> -    if (ret && !monitor_has_error(mon)) {
>> -        /*
>> -         * If it returns failure, it must have passed on error.
>> -         *
>> -         * Action: Report an internal error to the client if in QMP.
>> -         */
>> -        qerror_report(QERR_UNDEFINED_ERROR);
>> -    }
>> -}
>
> [2] - handler_audit() goes away now that it has no caller
>
>> -
>>  static void handle_user_command(Monitor *mon, const char *cmdline)
>>  {
>>      QDict *qdict;
>> @@ -5015,28 +5003,17 @@ static QDict *qmp_check_input_obj(QObject *input_obj)
>>      return input_dict;
>>  }
>>  
>> -static void qmp_call_cmd(Monitor *mon, const mon_cmd_t *cmd,
>> -                         const QDict *params)
>> -{
>> -    int ret;
>> -    QObject *data = NULL;
>> -
>> -    ret = cmd->mhandler.cmd_new(mon, params, &data);
>> -    handler_audit(mon, cmd, ret);
>> -    monitor_protocol_emitter(mon, data);
>> -    qobject_decref(data);
>> -}
>
> [1] - qmp_call_cmd() is inlined and simplified...
>
>> -
>>  static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
>>  {
>>      int err;
>> -    QObject *obj;
>> +    QObject *obj, *data;
>>      QDict *input, *args;
>>      const mon_cmd_t *cmd;
>>      const char *cmd_name;
>>      Monitor *mon = cur_mon;
>>  
>>      args = input = NULL;
>> +    data = NULL;
>>  
>>      obj = json_parser_parse(tokens, NULL);
>>      if (!obj) {
>> @@ -5079,12 +5056,17 @@ static void handle_qmp_command(JSONMessageParser *parser, QList *tokens)
>>          goto err_out;
>>      }
>>  
>> -    qmp_call_cmd(mon, cmd, args);
>> -    goto out;
>> +    if (cmd->mhandler.cmd_new(mon, args, &data)) {
>> +        /* Command failed... */
>> +        if (!monitor_has_error(mon)) {
>> +            /* ... without setting an error, so make one up */
>> +            qerror_report(QERR_UNDEFINED_ERROR);
>> +        }
>> +    }
>
> ...into its lone caller.

Can do.

>>  
>>  err_out:
>> -    monitor_protocol_emitter(mon, NULL);
>> -out:
>> +    monitor_protocol_emitter(mon, data);
>> +    qobject_decref(data);
>>      QDECREF(input);
>>      QDECREF(args);
>>  }
>> 
>
> But the code cleanup itself looks sane, so with the improved commit message:
>
> Reviewed-by: Eric Blake <eblake@redhat.com>

Thanks!