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qmp: Simplify code around monitor_qmp_dispatch_one() 

Change monitor_qmp_dispatch_one() to take its parameters unwrapped,
move monitor_resume() to the one caller that needs it, rename the
function to monitor_qmp_dispatch().

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Message-Id: <20180703085358.13941-16-armbru@redhat.com>
This commit is contained in:
Markus Armbruster 2018-07-03 10:53:41 +02:00
parent 05f7274c8b
commit b27314567d
1 changed files with 24 additions and 34 deletions
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58
monitor.c
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@ -4167,20 +4167,10 @@ static void monitor_qmp_respond(Monitor *mon, QObject *rsp,
qobject_unref(rsp);
}
/*
* Dispatch one single QMP request. The function will free the req_obj
* and objects inside it before return.
*/
static void monitor_qmp_dispatch_one(QMPRequest *req_obj)
static void monitor_qmp_dispatch(Monitor *mon, QObject *req, QObject *id)
{
Monitor *mon, *old_mon;
QObject *req, *rsp = NULL, *id;
bool need_resume;
req = req_obj->req;
mon = req_obj->mon;
id = req_obj->id;
need_resume = req_obj->need_resume;
Monitor *old_mon;
QObject *rsp;
old_mon = cur_mon;
cur_mon = mon;
@ -4189,15 +4179,7 @@ static void monitor_qmp_dispatch_one(QMPRequest *req_obj)
cur_mon = old_mon;
/* Respond if necessary */
monitor_qmp_respond(mon, rsp, NULL, qobject_ref(id));
/* This pairs with the monitor_suspend() in handle_qmp_command(). */
if (need_resume) {
monitor_resume(mon);
}
qmp_request_free(req_obj);
}
/*
@ -4241,12 +4223,20 @@ static void monitor_qmp_bh_dispatcher(void *data)
{
QMPRequest *req_obj = monitor_qmp_requests_pop_any();
if (req_obj) {
trace_monitor_qmp_cmd_in_band(qobject_get_try_str(req_obj->id) ?: "");
monitor_qmp_dispatch_one(req_obj);
/* Reschedule instead of looping so the main loop stays responsive */
qemu_bh_schedule(mon_global.qmp_dispatcher_bh);
if (!req_obj) {
return;
}
trace_monitor_qmp_cmd_in_band(qobject_get_try_str(req_obj->id) ?: "");
monitor_qmp_dispatch(req_obj->mon, req_obj->req, req_obj->id);
if (req_obj->need_resume) {
/* Pairs with the monitor_suspend() in handle_qmp_command() */
monitor_resume(req_obj->mon);
}
qmp_request_free(req_obj);
/* Reschedule instead of looping so the main loop stays responsive */
qemu_bh_schedule(mon_global.qmp_dispatcher_bh);
}
#define QMP_REQ_QUEUE_LEN_MAX (8)
@ -4292,20 +4282,20 @@ static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
goto err;
}
if (qmp_is_oob(qdict)) {
/* Out-of-band (OOB) requests are executed directly in parser. */
trace_monitor_qmp_cmd_out_of_band(qobject_get_try_str(id)
?: "");
monitor_qmp_dispatch(mon, req, id);
return;
}
req_obj = g_new0(QMPRequest, 1);
req_obj->mon = mon;
req_obj->id = id;
req_obj->req = req;
req_obj->need_resume = false;
if (qmp_is_oob(qdict)) {
/* Out-of-band (OOB) requests are executed directly in parser. */
trace_monitor_qmp_cmd_out_of_band(qobject_get_try_str(req_obj->id)
?: "");
monitor_qmp_dispatch_one(req_obj);
return;
}
/* Protect qmp_requests and fetching its length. */
qemu_mutex_lock(&mon->qmp.qmp_queue_lock);