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only one flag is needed for alarm_timer
The ALARM_FLAG_DYNTICKS can be testing simply by checking if there is a rearm function. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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291defbcda
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cd48d7e8f3
31
vl.c
31
vl.c
@ -592,20 +592,17 @@ struct QEMUTimer {
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struct qemu_alarm_timer {
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char const *name;
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unsigned int flags;
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int (*start)(struct qemu_alarm_timer *t);
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void (*stop)(struct qemu_alarm_timer *t);
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void (*rearm)(struct qemu_alarm_timer *t);
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void *priv;
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};
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#define ALARM_FLAG_DYNTICKS 0x1
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#define ALARM_FLAG_EXPIRED 0x2
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unsigned int expired;
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};
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static inline int alarm_has_dynticks(struct qemu_alarm_timer *t)
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{
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return t && (t->flags & ALARM_FLAG_DYNTICKS);
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return t && t->rearm;
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}
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static void qemu_rearm_alarm_timer(struct qemu_alarm_timer *t)
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@ -721,18 +718,18 @@ static void init_icount_adjust(void)
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static struct qemu_alarm_timer alarm_timers[] = {
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#ifndef _WIN32
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#ifdef __linux__
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{"dynticks", ALARM_FLAG_DYNTICKS, dynticks_start_timer,
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{"dynticks", dynticks_start_timer,
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dynticks_stop_timer, dynticks_rearm_timer, NULL},
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/* HPET - if available - is preferred */
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{"hpet", 0, hpet_start_timer, hpet_stop_timer, NULL, NULL},
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{"hpet", hpet_start_timer, hpet_stop_timer, NULL, NULL},
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/* ...otherwise try RTC */
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{"rtc", 0, rtc_start_timer, rtc_stop_timer, NULL, NULL},
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{"rtc", rtc_start_timer, rtc_stop_timer, NULL, NULL},
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#endif
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{"unix", 0, unix_start_timer, unix_stop_timer, NULL, NULL},
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{"unix", unix_start_timer, unix_stop_timer, NULL, NULL},
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#else
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{"dynticks", ALARM_FLAG_DYNTICKS, win32_start_timer,
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{"dynticks", win32_start_timer,
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win32_stop_timer, win32_rearm_timer, &alarm_win32_data},
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{"win32", 0, win32_start_timer,
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{"win32", win32_start_timer,
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win32_stop_timer, NULL, &alarm_win32_data},
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#endif
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{NULL, }
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@ -880,7 +877,7 @@ void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
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/* Rearm if necessary */
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if (pt == &active_timers[ts->clock->type]) {
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if ((alarm_timer->flags & ALARM_FLAG_EXPIRED) == 0) {
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if (!alarm_timer->expired) {
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qemu_rearm_alarm_timer(alarm_timer);
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}
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/* Interrupt execution to force deadline recalculation. */
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@ -1053,7 +1050,7 @@ static void host_alarm_handler(int host_signum)
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qemu_timer_expired(active_timers[QEMU_CLOCK_HOST],
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qemu_get_clock(host_clock))) {
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qemu_event_increment();
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if (alarm_timer) alarm_timer->flags |= ALARM_FLAG_EXPIRED;
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if (alarm_timer) alarm_timer->expired = 1;
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#ifndef CONFIG_IOTHREAD
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if (next_cpu) {
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@ -1282,6 +1279,7 @@ static void dynticks_rearm_timer(struct qemu_alarm_timer *t)
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int64_t nearest_delta_us = INT64_MAX;
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int64_t current_us;
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assert(alarm_has_dynticks(t));
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if (!active_timers[QEMU_CLOCK_REALTIME] &&
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!active_timers[QEMU_CLOCK_VIRTUAL] &&
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!active_timers[QEMU_CLOCK_HOST])
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@ -1397,6 +1395,7 @@ static void win32_rearm_timer(struct qemu_alarm_timer *t)
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{
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struct qemu_alarm_win32 *data = t->priv;
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assert(alarm_has_dynticks(t));
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if (!active_timers[QEMU_CLOCK_REALTIME] &&
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!active_timers[QEMU_CLOCK_VIRTUAL] &&
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!active_timers[QEMU_CLOCK_HOST])
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@ -3883,8 +3882,8 @@ void main_loop_wait(int timeout)
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slirp_select_poll(&rfds, &wfds, &xfds, (ret < 0));
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/* rearm timer, if not periodic */
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if (alarm_timer->flags & ALARM_FLAG_EXPIRED) {
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alarm_timer->flags &= ~ALARM_FLAG_EXPIRED;
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if (alarm_timer->expired) {
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alarm_timer->expired = 0;
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qemu_rearm_alarm_timer(alarm_timer);
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}
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