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qmp: Simplify monitor_qmp_respond()

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monitor_qmp_respond() takes both a response object and an error
object.  If an error object is non-null, the response object must be
null, and the response is built from the error object.

Of the two callers, one always passes a null response object, and one
a null error object.  Move building the response object from the error
object to the latter, and drop the error object parameter.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180703085358.13941-27-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2018-07-03 10:53:52 +02:00
parent 1816604b62
commit 7cb2123f22
1 changed files with 10 additions and 16 deletions
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26
monitor.c
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@ -4100,18 +4100,12 @@ static int monitor_can_read(void *opaque)
}
/*
* 1. This function takes ownership of rsp, err, and id.
* 2. rsp, err, and id may be NULL.
* 3. If err != NULL then rsp must be NULL.
* Emit QMP response @rsp with ID @id to @mon.
* Null @rsp can only happen for commands with QCO_NO_SUCCESS_RESP.
* Nothing is emitted then.
*/
static void monitor_qmp_respond(Monitor *mon, QDict *rsp,
Error *err, QObject *id)
static void monitor_qmp_respond(Monitor *mon, QDict *rsp, QObject *id)
{
if (err) {
assert(!rsp);
rsp = qmp_error_response(err);
}
if (rsp) {
if (id) {
qdict_put_obj(rsp, "id", qobject_ref(id));
@ -4119,9 +4113,6 @@ static void monitor_qmp_respond(Monitor *mon, QDict *rsp,
qmp_queue_response(mon, rsp);
}
qobject_unref(id);
qobject_unref(rsp);
}
static void monitor_qmp_dispatch(Monitor *mon, QObject *req, QObject *id)
@ -4149,8 +4140,8 @@ static void monitor_qmp_dispatch(Monitor *mon, QObject *req, QObject *id)
}
}
/* Respond if necessary */
monitor_qmp_respond(mon, rsp, NULL, qobject_ref(id));
monitor_qmp_respond(mon, rsp, id);
qobject_unref(rsp);
}
/*
@ -4193,6 +4184,7 @@ static QMPRequest *monitor_qmp_requests_pop_any(void)
static void monitor_qmp_bh_dispatcher(void *data)
{
QMPRequest *req_obj = monitor_qmp_requests_pop_any();
QDict *rsp;
if (!req_obj) {
return;
@ -4203,7 +4195,9 @@ static void monitor_qmp_bh_dispatcher(void *data)
monitor_qmp_dispatch(req_obj->mon, req_obj->req, req_obj->id);
} else {
assert(req_obj->err);
monitor_qmp_respond(req_obj->mon, NULL, req_obj->err, NULL);
rsp = qmp_error_response(req_obj->err);
monitor_qmp_respond(req_obj->mon, rsp, NULL);
qobject_unref(rsp);
}
if (req_obj->need_resume) {