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qemu-timer: remove active_timers array 

Embed the list in the QEMUClock instead.

Reviewed-by: Anthony Liguori <aliguori@us.ibm.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Paolo Bonzini 2011-09-13 11:42:26 +02:00
parent 0abc2712b8
commit 688eb3896b
1 changed files with 28 additions and 31 deletions
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59
qemu-timer.c
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@ -134,6 +134,7 @@ struct QEMUClock {
int enabled;
QEMUTimer *warp_timer;
QEMUTimer *active_timers;
NotifierList reset_notifiers;
int64_t last;
@ -352,14 +353,10 @@ next:
}
}
#define QEMU_NUM_CLOCKS 3
QEMUClock *rt_clock;
QEMUClock *vm_clock;
QEMUClock *host_clock;
static QEMUTimer *active_timers[QEMU_NUM_CLOCKS];
static QEMUClock *qemu_new_clock(int type)
{
QEMUClock *clock;
@ -403,7 +400,7 @@ static void icount_warp_rt(void *opaque)
int64_t delta = cur_time - cur_icount;
qemu_icount_bias += MIN(warp_delta, delta);
}
if (qemu_timer_expired(active_timers[QEMU_CLOCK_VIRTUAL],
if (qemu_timer_expired(vm_clock->active_timers,
qemu_get_clock_ns(vm_clock))) {
qemu_notify_event();
}
@ -434,7 +431,7 @@ void qemu_clock_warp(QEMUClock *clock)
* the earliest vm_clock timer.
*/
icount_warp_rt(NULL);
if (!all_cpu_threads_idle() || !active_timers[clock->type]) {
if (!all_cpu_threads_idle() || !clock->active_timers) {
qemu_del_timer(clock->warp_timer);
return;
}
@ -489,7 +486,7 @@ void qemu_del_timer(QEMUTimer *ts)
/* NOTE: this code must be signal safe because
qemu_timer_expired() can be called from a signal. */
pt = &active_timers[ts->clock->type];
pt = &ts->clock->active_timers;
for(;;) {
t = *pt;
if (!t)
@ -513,7 +510,7 @@ static void qemu_mod_timer_ns(QEMUTimer *ts, int64_t expire_time)
/* add the timer in the sorted list */
/* NOTE: this code must be signal safe because
qemu_timer_expired() can be called from a signal. */
pt = &active_timers[ts->clock->type];
pt = &ts->clock->active_timers;
for(;;) {
t = *pt;
if (!qemu_timer_expired_ns(t, expire_time)) {
@ -526,7 +523,7 @@ static void qemu_mod_timer_ns(QEMUTimer *ts, int64_t expire_time)
*pt = ts;
/* Rearm if necessary */
if (pt == &active_timers[ts->clock->type]) {
if (pt == &ts->clock->active_timers) {
if (!alarm_timer->pending) {
qemu_rearm_alarm_timer(alarm_timer);
}
@ -548,7 +545,7 @@ void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time)
int qemu_timer_pending(QEMUTimer *ts)
{
QEMUTimer *t;
for(t = active_timers[ts->clock->type]; t != NULL; t = t->next) {
for (t = ts->clock->active_timers; t != NULL; t = t->next) {
if (t == ts)
return 1;
}
@ -569,7 +566,7 @@ static void qemu_run_timers(QEMUClock *clock)
return;
current_time = qemu_get_clock_ns(clock);
ptimer_head = &active_timers[clock->type];
ptimer_head = &clock->active_timers;
for(;;) {
ts = *ptimer_head;
if (!qemu_timer_expired_ns(ts, current_time)) {
@ -773,8 +770,8 @@ int64_t qemu_next_icount_deadline(void)
int64_t delta = INT32_MAX;
assert(use_icount);
if (active_timers[QEMU_CLOCK_VIRTUAL]) {
delta = active_timers[QEMU_CLOCK_VIRTUAL]->expire_time -
if (vm_clock->active_timers) {
delta = vm_clock->active_timers->expire_time -
qemu_get_clock_ns(vm_clock);
}
@ -789,20 +786,20 @@ static int64_t qemu_next_alarm_deadline(void)
int64_t delta;
int64_t rtdelta;
if (!use_icount && active_timers[QEMU_CLOCK_VIRTUAL]) {
delta = active_timers[QEMU_CLOCK_VIRTUAL]->expire_time -
if (!use_icount && vm_clock->active_timers) {
delta = vm_clock->active_timers->expire_time -
qemu_get_clock_ns(vm_clock);
} else {
delta = INT32_MAX;
}
if (active_timers[QEMU_CLOCK_HOST]) {
int64_t hdelta = active_timers[QEMU_CLOCK_HOST]->expire_time -
if (host_clock->active_timers) {
int64_t hdelta = host_clock->active_timers->expire_time -
qemu_get_clock_ns(host_clock);
if (hdelta < delta)
delta = hdelta;
}
if (active_timers[QEMU_CLOCK_REALTIME]) {
rtdelta = (active_timers[QEMU_CLOCK_REALTIME]->expire_time -
if (rt_clock->active_timers) {
rtdelta = (rt_clock->active_timers->expire_time -
qemu_get_clock_ns(rt_clock));
if (rtdelta < delta)
delta = rtdelta;
@ -871,9 +868,9 @@ static void dynticks_rearm_timer(struct qemu_alarm_timer *t)
int64_t current_ns;
assert(alarm_has_dynticks(t));
if (!active_timers[QEMU_CLOCK_REALTIME] &&
!active_timers[QEMU_CLOCK_VIRTUAL] &&
!active_timers[QEMU_CLOCK_HOST])
if (!rt_clock->active_timers &&
!vm_clock->active_timers &&
!host_clock->active_timers)
return;
nearest_delta_ns = qemu_next_alarm_deadline();
@ -925,9 +922,9 @@ static void unix_rearm_timer(struct qemu_alarm_timer *t)
int err;
assert(alarm_has_dynticks(t));
if (!active_timers[QEMU_CLOCK_REALTIME] &&
!active_timers[QEMU_CLOCK_VIRTUAL] &&
!active_timers[QEMU_CLOCK_HOST])
if (!rt_clock->active_timers &&
!vm_clock->active_timers &&
!host_clock->active_timers)
return;
nearest_delta_ns = qemu_next_alarm_deadline();
@ -1022,9 +1019,9 @@ static void mm_rearm_timer(struct qemu_alarm_timer *t)
int nearest_delta_ms;
assert(alarm_has_dynticks(t));
if (!active_timers[QEMU_CLOCK_REALTIME] &&
!active_timers[QEMU_CLOCK_VIRTUAL] &&
!active_timers[QEMU_CLOCK_HOST]) {
if (!rt_clock->active_timers &&
!vm_clock->active_timers &&
!host_clock->active_timers) {
return;
}
@ -1092,9 +1089,9 @@ static void win32_rearm_timer(struct qemu_alarm_timer *t)
BOOLEAN success;
assert(alarm_has_dynticks(t));
if (!active_timers[QEMU_CLOCK_REALTIME] &&
!active_timers[QEMU_CLOCK_VIRTUAL] &&
!active_timers[QEMU_CLOCK_HOST])
if (!rt_clock->active_timers &&
!vm_clock->active_timers &&
!host_clock->active_timers)
return;
nearest_delta_ms = (qemu_next_alarm_deadline() + 999999) / 1000000;