QAPI patches patches for 2020-12-19

[PULL 22/33] qmp: Fix tracing of non-string command IDs

Markus Armbruster posted 33 patches 5 years, 1 month ago

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Maintainers: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>, Kevin Wolf <kwolf@redhat.com>, Aleksandar Rikalo <aleksandar.rikalo@syrmia.com>, Max Reitz <mreitz@redhat.com>, "Michael S. Tsirkin" <mst@redhat.com>, Gerd Hoffmann <kraxel@redhat.com>, David Gibson <david@gibson.dropbear.id.au>, Cornelia Huck <cohuck@redhat.com>, Artyom Tarasenko <atar4qemu@gmail.com>, "Philippe Mathieu-Daudé" <f4bug@amsat.org>, "Edgar E. Iglesias" <edgar.iglesias@gmail.com>, Laszlo Ersek <lersek@redhat.com>, Markus Armbruster <armbru@redhat.com>, Richard Henderson <richard.henderson@linaro.org>, Fam Zheng <fam@euphon.net>, Stefan Hajnoczi <stefanha@redhat.com>, Marcel Apfelbaum <marcel.apfelbaum@gmail.com>, Peter Maydell <peter.maydell@linaro.org>, "Philippe Mathieu-Daudé" <philmd@redhat.com>, Jiaxun Yang <jiaxun.yang@flygoat.com>, Michael Roth <michael.roth@amd.com>, Jason Wang <jasowang@redhat.com>, Jason Dillaman <dillaman@redhat.com>, Sarah Harris <S.E.Harris@kent.ac.uk>, Paolo Bonzini <pbonzini@redhat.com>, Eduardo Habkost <ehabkost@redhat.com>, Andrzej Zaborowski <balrogg@gmail.com>, Halil Pasic <pasic@linux.ibm.com>, Juan Quintela <quintela@redhat.com>, Greg Kurz <groug@kaod.org>, Yuval Shaia <yuval.shaia.ml@gmail.com>, Christian Borntraeger <borntraeger@de.ibm.com>, "Dr. David Alan Gilbert" <dgilbert@redhat.com>, "Daniel P. Berrangé" <berrange@redhat.com>, Aurelien Jarno <aurelien@aurel32.net>, Laurent Vivier <lvivier@redhat.com>, Stafford Horne <shorne@gmail.com>, "Marc-André Lureau" <marcandre.lureau@redhat.com>, Michael Rolnik <mrolnik@gmail.com>, Thomas Huth <thuth@redhat.com>, Jiri Pirko <jiri@resnulli.us>, David Hildenbrand <david@redhat.com>

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[PULL 22/33] qmp: Fix tracing of non-string command IDs

Posted by Markus Armbruster 5 years, 1 month ago

Tracepoints monitor_qmp_cmd_in_band and
monitor_qmp_cmd_out_of_band (commit cf869d5317 "qmp: support
out-of-band (oob) execution") treat non-string "id" like absent "id".
Fix that.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20201211171152.146877-10-armbru@redhat.com>
---
 monitor/qmp.c | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)

diff --git a/monitor/qmp.c b/monitor/qmp.c
index 374bb4b81c..8f91af32be 100644
--- a/monitor/qmp.c
+++ b/monitor/qmp.c
@@ -31,7 +31,6 @@
 #include "qapi/qmp/qdict.h"
 #include "qapi/qmp/qjson.h"
 #include "qapi/qmp/qlist.h"
-#include "qapi/qmp/qstring.h"
 #include "trace.h"
 
 struct QMPRequest {
@@ -276,9 +275,15 @@ void coroutine_fn monitor_qmp_dispatcher_co(void *data)
             mon->qmp_requests->length == QMP_REQ_QUEUE_LEN_MAX - 1;
         qemu_mutex_unlock(&mon->qmp_queue_lock);
         if (req_obj->req) {
-            QDict *qdict = qobject_to(QDict, req_obj->req);
-            QObject *id = qdict ? qdict_get(qdict, "id") : NULL;
-            trace_monitor_qmp_cmd_in_band(qobject_get_try_str(id) ?: "");
+            if (trace_event_get_state(TRACE_MONITOR_QMP_CMD_IN_BAND)) {
+                QDict *qdict = qobject_to(QDict, req_obj->req);
+                QObject *id = qdict ? qdict_get(qdict, "id") : NULL;
+                GString *id_json;
+
+                id_json = id ? qobject_to_json(id) : g_string_new(NULL);
+                trace_monitor_qmp_cmd_in_band(id_json->str);
+                g_string_free(id_json, true);
+            }
             monitor_qmp_dispatch(mon, req_obj->req);
         } else {
             assert(req_obj->err);
@@ -308,17 +313,11 @@ void coroutine_fn monitor_qmp_dispatcher_co(void *data)
 static void handle_qmp_command(void *opaque, QObject *req, Error *err)
 {
     MonitorQMP *mon = opaque;
-    QObject *id = NULL;
-    QDict *qdict;
+    QDict *qdict = qobject_to(QDict, req);
     QMPRequest *req_obj;
 
     assert(!req != !err);
 
-    qdict = qobject_to(QDict, req);
-    if (qdict) {
-        id = qdict_get(qdict, "id");
-    } /* else will fail qmp_dispatch() */
-
     if (req && trace_event_get_state_backends(TRACE_HANDLE_QMP_COMMAND)) {
         GString *req_json = qobject_to_json(req);
         trace_handle_qmp_command(mon, req_json->str);
@@ -327,7 +326,14 @@ static void handle_qmp_command(void *opaque, QObject *req, Error *err)
 
     if (qdict && qmp_is_oob(qdict)) {
         /* OOB commands are executed immediately */
-        trace_monitor_qmp_cmd_out_of_band(qobject_get_try_str(id) ?: "");
+        if (trace_event_get_state(TRACE_MONITOR_QMP_CMD_OUT_OF_BAND)) {
+            QObject *id = qdict_get(qdict, "id");
+            GString *id_json;
+
+            id_json = id ? qobject_to_json(id) : g_string_new(NULL);
+            trace_monitor_qmp_cmd_out_of_band(id_json->str);
+            g_string_free(id_json, true);
+        }
         monitor_qmp_dispatch(mon, req);
         qobject_unref(req);
         return;
-- 
2.26.2