mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-30 06:50:57 +00:00
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>
92 lines
2.1 KiB
C
92 lines
2.1 KiB
C
/*
|
|
* Core Definitions for QAPI/QMP Dispatch
|
|
*
|
|
* Copyright IBM, Corp. 2011
|
|
*
|
|
* Authors:
|
|
* Anthony Liguori <aliguori@us.ibm.com>
|
|
* Michael Roth <mdroth@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.
|
|
*
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "qapi/qmp/dispatch.h"
|
|
|
|
void qmp_register_command(QmpCommandList *cmds, const char *name,
|
|
QmpCommandFunc *fn, QmpCommandOptions options)
|
|
{
|
|
QmpCommand *cmd = g_malloc0(sizeof(*cmd));
|
|
|
|
/* QCO_COROUTINE and QCO_ALLOW_OOB are incompatible for now */
|
|
assert(!((options & QCO_COROUTINE) && (options & QCO_ALLOW_OOB)));
|
|
|
|
cmd->name = name;
|
|
cmd->fn = fn;
|
|
cmd->enabled = true;
|
|
cmd->options = options;
|
|
QTAILQ_INSERT_TAIL(cmds, cmd, node);
|
|
}
|
|
|
|
const QmpCommand *qmp_find_command(const QmpCommandList *cmds, const char *name)
|
|
{
|
|
QmpCommand *cmd;
|
|
|
|
QTAILQ_FOREACH(cmd, cmds, node) {
|
|
if (strcmp(cmd->name, name) == 0) {
|
|
return cmd;
|
|
}
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
static void qmp_toggle_command(QmpCommandList *cmds, const char *name,
|
|
bool enabled)
|
|
{
|
|
QmpCommand *cmd;
|
|
|
|
QTAILQ_FOREACH(cmd, cmds, node) {
|
|
if (strcmp(cmd->name, name) == 0) {
|
|
cmd->enabled = enabled;
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
void qmp_disable_command(QmpCommandList *cmds, const char *name)
|
|
{
|
|
qmp_toggle_command(cmds, name, false);
|
|
}
|
|
|
|
void qmp_enable_command(QmpCommandList *cmds, const char *name)
|
|
{
|
|
qmp_toggle_command(cmds, name, true);
|
|
}
|
|
|
|
bool qmp_command_is_enabled(const QmpCommand *cmd)
|
|
{
|
|
return cmd->enabled;
|
|
}
|
|
|
|
const char *qmp_command_name(const QmpCommand *cmd)
|
|
{
|
|
return cmd->name;
|
|
}
|
|
|
|
bool qmp_has_success_response(const QmpCommand *cmd)
|
|
{
|
|
return !(cmd->options & QCO_NO_SUCCESS_RESP);
|
|
}
|
|
|
|
void qmp_for_each_command(const QmpCommandList *cmds, qmp_cmd_callback_fn fn,
|
|
void *opaque)
|
|
{
|
|
const QmpCommand *cmd;
|
|
|
|
QTAILQ_FOREACH(cmd, cmds, node) {
|
|
fn(cmd, opaque);
|
|
}
|
|
}
|