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Re: [Qemu-block] [Qemu-devel] [PATCH v3 10/15] monitor: Split out monito
From: |
Markus Armbruster |
Subject: |
Re: [Qemu-block] [Qemu-devel] [PATCH v3 10/15] monitor: Split out monitor/qmp.c |
Date: |
Fri, 14 Jun 2019 08:46:56 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.2 (gnu/linux) |
Kevin Wolf <address@hidden> writes:
> Move QMP infrastructure from monitor/misc.c to monitor/qmp.c. This is
> code that can be shared for all targets, so compile it only once.
>
> The amount of function and particularly extern variables in
> monitor_int.h is probably a bit larger than it needs to be, but this way
> no non-trivial code modifications are needed. The interfaces between QMP
> and the monitor core can be cleaned up later.
>
> Signed-off-by: Kevin Wolf <address@hidden>
> Reviewed-by: Dr. David Alan Gilbert <address@hidden>
> ---
> monitor/monitor-internal.h | 29 +++
> monitor/misc.c | 397 +-----------------------------------
> monitor/qmp.c | 405 +++++++++++++++++++++++++++++++++++++
> Makefile.objs | 1 +
> monitor/Makefile.objs | 1 +
> monitor/trace-events | 4 +-
> 6 files changed, 448 insertions(+), 389 deletions(-)
> create mode 100644 monitor/qmp.c
>
> diff --git a/monitor/monitor-internal.h b/monitor/monitor-internal.h
> index 17a632b0ad..0a26f702dd 100644
> --- a/monitor/monitor-internal.h
> +++ b/monitor/monitor-internal.h
> @@ -145,4 +145,33 @@ typedef struct {
> GQueue *qmp_requests;
> } MonitorQMP;
>
> +/**
> + * Is @mon a QMP monitor?
> + */
> +static inline bool monitor_is_qmp(const Monitor *mon)
> +{
> + return (mon->flags & MONITOR_USE_CONTROL);
checkpatch.pl complains:
ERROR: return is not a function, parentheses are not required
Can touch up in my tree.
Reviewed-by: Markus Armbruster <address@hidden>
Two reminders for myself below.
[...]
> diff --git a/monitor/qmp.c b/monitor/qmp.c
> new file mode 100644
> index 0000000000..31fbcd59f7
> --- /dev/null
> +++ b/monitor/qmp.c
> @@ -0,0 +1,405 @@
> +/*
> + * QEMU monitor
> + *
> + * Copyright (c) 2003-2004 Fabrice Bellard
> + *
> + * Permission is hereby granted, free of charge, to any person obtaining a
> copy
> + * of this software and associated documentation files (the "Software"), to
> deal
> + * in the Software without restriction, including without limitation the
> rights
> + * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
> + * copies of the Software, and to permit persons to whom the Software is
> + * furnished to do so, subject to the following conditions:
> + *
> + * The above copyright notice and this permission notice shall be included in
> + * all copies or substantial portions of the Software.
> + *
> + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
> + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
> + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
> + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
> + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
> FROM,
> + * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
> + * THE SOFTWARE.
> + */
> +
> +#include "qemu/osdep.h"
> +
> +#include "chardev/char-io.h"
> +#include "monitor-internal.h"
> +#include "qapi/error.h"
> +#include "qapi/qapi-commands-misc.h"
> +#include "qapi/qmp/qjson.h"
> +#include "qapi/qmp/qstring.h"
> +#include "qapi/qmp/qlist.h"
> +#include "trace.h"
> +
> +struct QMPRequest {
> + /* Owner of the request */
> + MonitorQMP *mon;
> + /*
> + * Request object to be handled or Error to be reported
> + * (exactly one of them is non-null)
> + */
> + QObject *req;
> + Error *err;
> +};
> +typedef struct QMPRequest QMPRequest;
Note to self: consider fusing these two in a follow-up patch.
> +
> +QmpCommandList qmp_commands, qmp_cap_negotiation_commands;
> +
> +static bool qmp_oob_enabled(MonitorQMP *mon)
> +{
> + return mon->capab[QMP_CAPABILITY_OOB];
> +}
> +
> +static void monitor_qmp_caps_reset(MonitorQMP *mon)
> +{
> + memset(mon->capab_offered, 0, sizeof(mon->capab_offered));
> + memset(mon->capab, 0, sizeof(mon->capab));
> + mon->capab_offered[QMP_CAPABILITY_OOB] = mon->common.use_io_thread;
> +}
> +
> +static void qmp_request_free(QMPRequest *req)
> +{
> + qobject_unref(req->req);
> + error_free(req->err);
> + g_free(req);
> +}
> +
> +/* Caller must hold mon->qmp.qmp_queue_lock */
> +static void monitor_qmp_cleanup_req_queue_locked(MonitorQMP *mon)
> +{
> + while (!g_queue_is_empty(mon->qmp_requests)) {
> + qmp_request_free(g_queue_pop_head(mon->qmp_requests));
> + }
> +}
> +
> +static void monitor_qmp_cleanup_queues(MonitorQMP *mon)
> +{
> + qemu_mutex_lock(&mon->qmp_queue_lock);
> + monitor_qmp_cleanup_req_queue_locked(mon);
> + qemu_mutex_unlock(&mon->qmp_queue_lock);
> +}
> +
> +void qmp_send_response(MonitorQMP *mon, const QDict *rsp)
> +{
> + const QObject *data = QOBJECT(rsp);
> + QString *json;
> +
> + json = mon->common.flags & MONITOR_USE_PRETTY ?
> + qobject_to_json_pretty(data) : qobject_to_json(data);
> + assert(json != NULL);
> +
> + qstring_append_chr(json, '\n');
> + monitor_puts(&mon->common, qstring_get_str(json));
> +
> + qobject_unref(json);
> +}
> +
> +/*
> + * 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(MonitorQMP *mon, QDict *rsp)
> +{
> + if (rsp) {
> + qmp_send_response(mon, rsp);
> + }
> +}
Note to self: of the two callers, only one can pass null @rsp.
Eliminate this function.
[...]
- [Qemu-block] [PATCH v3 07/15] Move monitor.c to monitor/misc.c, (continued)
- [Qemu-block] [PATCH v3 07/15] Move monitor.c to monitor/misc.c, Kevin Wolf, 2019/06/13
- [Qemu-block] [PATCH v3 09/15] monitor: Create monitor-internal.h with common definitions, Kevin Wolf, 2019/06/13
- [Qemu-block] [PATCH v3 08/15] monitor: Move {hmp, qmp}.c to monitor/{hmp, qmp}-cmds.c, Kevin Wolf, 2019/06/13
- [Qemu-block] [PATCH v3 04/15] monitor: Create MonitorHMP with readline state, Kevin Wolf, 2019/06/13
- [Qemu-block] [PATCH v3 10/15] monitor: Split out monitor/qmp.c, Kevin Wolf, 2019/06/13
- Re: [Qemu-block] [Qemu-devel] [PATCH v3 10/15] monitor: Split out monitor/qmp.c,
Markus Armbruster <=
- [Qemu-block] [PATCH v3 14/15] monitor: Replace monitor_init() with monitor_init_{hmp, qmp}(), Kevin Wolf, 2019/06/13
- [Qemu-block] [PATCH v3 13/15] monitor: Split Monitor.flags into separate bools, Kevin Wolf, 2019/06/13
- [Qemu-block] [PATCH v3 12/15] monitor: Split out monitor/monitor.c, Kevin Wolf, 2019/06/13
- [Qemu-block] [PATCH v3 15/15] vl: Deprecate -mon pretty=... for HMP monitors, Kevin Wolf, 2019/06/13