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monitor: move the cur_mon hack deeper for QMP

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In monitor_qmp_read(), we have the hack to temporarily replace the
cur_mon pointer.  Now we move this hack deeper inside the QMP dispatcher
routine since the Monitor pointer can be actually obtained using
container_of() upon the parser object, just like most of the other JSON
parser users do.

This does not make much sense as a single patch.  However, this will be
a big step for the next patch, when the QMP dispatcher routine will be
split from the QMP parser.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180309090006.10018-7-peterx@redhat.com>
[eblake: rebase context of qobject_to() macro]
Signed-off-by: Eric Blake <eblake@redhat.com>
This commit is contained in:
Peter Xu 2018-03-09 16:59:49 +08:00 committed by Eric Blake
parent 88a95d1090
commit 227a07552f
1 changed files with 10 additions and 7 deletions
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17
monitor.c
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@ -3765,7 +3765,9 @@ static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
{
QObject *req, *rsp = NULL, *id = NULL;
QDict *qdict = NULL;
Monitor *mon = cur_mon;
MonitorQMP *mon_qmp = container_of(parser, MonitorQMP, parser);
Monitor *old_mon, *mon = container_of(mon_qmp, Monitor, qmp);
Error *err = NULL;
req = json_parser_parse_err(tokens, NULL, &err);
@ -3790,8 +3792,13 @@ static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
QDECREF(req_json);
}
old_mon = cur_mon;
cur_mon = mon;
rsp = qmp_dispatch(cur_mon->qmp.commands, req);
cur_mon = old_mon;
if (mon->qmp.commands == &qmp_cap_negotiation_commands) {
qdict = qdict_get_qdict(qobject_to(QDict, rsp), "error");
if (qdict
@ -3828,13 +3835,9 @@ err_out:
static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
{
Monitor *old_mon = cur_mon;
Monitor *mon = opaque;
cur_mon = opaque;
json_message_parser_feed(&cur_mon->qmp.parser, (const char *) buf, size);
cur_mon = old_mon;
json_message_parser_feed(&mon->qmp.parser, (const char *) buf, size);
}
static void monitor_read(void *opaque, const uint8_t *buf, int size)