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monitor: remove event_clock_type

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Instead, use a dynamic function to detect which clock we'll use.  The
problem is that the old code will let monitor initialization depend on
configure_accelerator() (that's where qtest_enabled() start to take
effect).  After this change, we don't have such a dependency any more.
We just need to make sure configure_accelerator() is called when we
start to use it.  Now it's only used in monitor_qapi_event_queue() and
monitor_qapi_event_handler(), so we're good.

Suggested-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Peter Xu <peterx@redhat.com>
Message-Id: <20180608035511.7439-6-peterx@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
[monitor_get_event_clock() name and comment tweaked]
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
This commit is contained in:
Peter Xu 2018-06-08 11:55:09 +08:00 committed by Markus Armbruster
parent 095cb1bffc
commit 6e8c5f4db7
1 changed files with 16 additions and 9 deletions
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25
monitor.c
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@ -281,8 +281,6 @@ QmpCommandList qmp_commands, qmp_cap_negotiation_commands;
Monitor *cur_mon;
static QEMUClockType event_clock_type = QEMU_CLOCK_REALTIME;
static void monitor_command_cb(void *opaque, const char *cmdline,
void *readline_opaque);
@ -309,6 +307,19 @@ static inline bool monitor_is_hmp_non_interactive(const Monitor *mon)
return !monitor_is_qmp(mon) && !monitor_uses_readline(mon);
}
/*
* Return the clock to use for recording an event's time.
* Beware: result is invalid before configure_accelerator().
*/
static inline QEMUClockType monitor_get_event_clock(void)
{
/*
* This allows us to perform tests on the monitor queues to verify
* that the rate limits are enforced.
*/
return qtest_enabled() ? QEMU_CLOCK_VIRTUAL : QEMU_CLOCK_REALTIME;
}
/**
* Is the current monitor, if any, a QMP monitor?
*/
@ -632,7 +643,7 @@ monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
* monitor_qapi_event_handler() in evconf->rate ns. Any
* events arriving before then will be delayed until then.
*/
int64_t now = qemu_clock_get_ns(event_clock_type);
int64_t now = qemu_clock_get_ns(monitor_get_event_clock());
monitor_qapi_event_emit(event, qdict);
@ -640,7 +651,7 @@ monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
evstate->event = event;
evstate->data = qobject_ref(data);
evstate->qdict = NULL;
evstate->timer = timer_new_ns(event_clock_type,
evstate->timer = timer_new_ns(monitor_get_event_clock(),
monitor_qapi_event_handler,
evstate);
g_hash_table_add(monitor_qapi_event_state, evstate);
@ -665,7 +676,7 @@ static void monitor_qapi_event_handler(void *opaque)
qemu_mutex_lock(&monitor_lock);
if (evstate->qdict) {
int64_t now = qemu_clock_get_ns(event_clock_type);
int64_t now = qemu_clock_get_ns(monitor_get_event_clock());
monitor_qapi_event_emit(evstate->event, evstate->qdict);
qobject_unref(evstate->qdict);
@ -721,10 +732,6 @@ static gboolean qapi_event_throttle_equal(const void *a, const void *b)
static void monitor_qapi_event_init(void)
{
if (qtest_enabled()) {
event_clock_type = QEMU_CLOCK_VIRTUAL;
}
monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
qapi_event_throttle_equal);
qmp_event_set_func_emit(monitor_qapi_event_queue);