9ce44e2ce2
This moves the QMP dispatcher to a coroutine and runs all QMP command handlers that declare 'coroutine': true in coroutine context so they can avoid blocking the main loop while doing I/O or waiting for other events. For commands that are not declared safe to run in a coroutine, the dispatcher drops out of coroutine context by calling the QMP command handler from a bottom half. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20201005155855.256490-10-kwolf@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
64 lines
1.9 KiB
C
64 lines
1.9 KiB
C
/*
|
|
* Core Definitions for QAPI/QMP Dispatch
|
|
*
|
|
* Copyright IBM, Corp. 2011
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
*
|
|
* This work is licensed under the terms of the GNU LGPL, version 2.1 or later.
|
|
* See the COPYING.LIB file in the top-level directory.
|
|
*
|
|
*/
|
|
|
|
#ifndef QAPI_QMP_DISPATCH_H
|
|
#define QAPI_QMP_DISPATCH_H
|
|
|
|
#include "monitor/monitor.h"
|
|
#include "qemu/queue.h"
|
|
|
|
typedef void (QmpCommandFunc)(QDict *, QObject **, Error **);
|
|
|
|
typedef enum QmpCommandOptions
|
|
{
|
|
QCO_NO_OPTIONS = 0x0,
|
|
QCO_NO_SUCCESS_RESP = (1U << 0),
|
|
QCO_ALLOW_OOB = (1U << 1),
|
|
QCO_ALLOW_PRECONFIG = (1U << 2),
|
|
QCO_COROUTINE = (1U << 3),
|
|
} QmpCommandOptions;
|
|
|
|
typedef struct QmpCommand
|
|
{
|
|
const char *name;
|
|
/* Runs in coroutine context if QCO_COROUTINE is set */
|
|
QmpCommandFunc *fn;
|
|
QmpCommandOptions options;
|
|
QTAILQ_ENTRY(QmpCommand) node;
|
|
bool enabled;
|
|
} QmpCommand;
|
|
|
|
typedef QTAILQ_HEAD(QmpCommandList, QmpCommand) QmpCommandList;
|
|
|
|
void qmp_register_command(QmpCommandList *cmds, const char *name,
|
|
QmpCommandFunc *fn, QmpCommandOptions options);
|
|
const QmpCommand *qmp_find_command(const QmpCommandList *cmds,
|
|
const char *name);
|
|
void qmp_disable_command(QmpCommandList *cmds, const char *name);
|
|
void qmp_enable_command(QmpCommandList *cmds, const char *name);
|
|
|
|
bool qmp_command_is_enabled(const QmpCommand *cmd);
|
|
const char *qmp_command_name(const QmpCommand *cmd);
|
|
bool qmp_has_success_response(const QmpCommand *cmd);
|
|
QDict *qmp_error_response(Error *err);
|
|
QDict *qmp_dispatch(const QmpCommandList *cmds, QObject *request,
|
|
bool allow_oob, Monitor *cur_mon);
|
|
bool qmp_is_oob(const QDict *dict);
|
|
|
|
typedef void (*qmp_cmd_callback_fn)(const QmpCommand *cmd, void *opaque);
|
|
|
|
void qmp_for_each_command(const QmpCommandList *cmds, qmp_cmd_callback_fn fn,
|
|
void *opaque);
|
|
|
|
#endif
|