yizhi-js-lib/favicon-trap
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

timer is redundant

Browse Source
This commit is contained in:
Nguyen Anh Quynh
2017-01-20 16:46:58 +08:00
parent 6daa8581cd
commit fff532fc20
4 changed files with 3 additions and 435 deletions
Download Patch File Download Diff File Expand all files Collapse all files

126
qemu/qemu-timer.c
View File

@ -55,21 +55,6 @@ typedef struct QEMUClock {
static QEMUClock qemu_clocks[QEMU_CLOCK_MAX];
/* A QEMUTimerList is a list of timers attached to a clock. More
* than one QEMUTimerList can be attached to each clock, for instance
* used by different AioContexts / threads. Each clock also has
* a list of the QEMUTimerLists associated with it, in order that
* reenabling the clock can call all the notifiers.
*/
struct QEMUTimerList {
QEMUClock *clock;
QEMUTimer *active_timers;
QLIST_ENTRY(QEMUTimerList) list;
QEMUTimerListNotifyCB *notify_cb;
void *notify_opaque;
};
/**
* qemu_clock_ptr:
* @type: type of clock
@ -83,117 +68,6 @@ static inline QEMUClock *qemu_clock_ptr(QEMUClockType type)
return &qemu_clocks[type];
}
static bool timer_expired_ns(QEMUTimer *timer_head, int64_t current_time)
{
return timer_head && (timer_head->expire_time <= current_time);
}
bool timerlist_has_timers(QEMUTimerList *timer_list)
{
return !!timer_list->active_timers;
}
void timerlist_notify(QEMUTimerList *timer_list)
{
if (timer_list->notify_cb) {
timer_list->notify_cb(timer_list->notify_opaque);
}
}
void timer_init(QEMUTimer *ts,
QEMUTimerList *timer_list, int scale,
QEMUTimerCB *cb, void *opaque)
{
ts->timer_list = timer_list;
ts->cb = cb;
ts->opaque = opaque;
ts->scale = scale;
ts->expire_time = -1;
}
static void timer_del_locked(QEMUTimerList *timer_list, QEMUTimer *ts)
{
QEMUTimer **pt, *t;
ts->expire_time = -1;
pt = &timer_list->active_timers;
for(;;) {
t = *pt;
if (!t)
break;
if (t == ts) {
*pt = t->next;
break;
}
pt = &t->next;
}
}
static bool timer_mod_ns_locked(QEMUTimerList *timer_list,
QEMUTimer *ts, int64_t expire_time)
{
QEMUTimer **pt, *t;
/* add the timer in the sorted list */
pt = &timer_list->active_timers;
for (;;) {
t = *pt;
if (!timer_expired_ns(t, expire_time)) {
break;
}
pt = &t->next;
}
ts->expire_time = MAX(expire_time, 0);
ts->next = *pt;
*pt = ts;
return pt == &timer_list->active_timers;
}
static void timerlist_rearm(QEMUTimerList *timer_list)
{
/* Interrupt execution to force deadline recalculation. */
timerlist_notify(timer_list);
}
/* stop a timer, but do not dealloc it */
void timer_del(QEMUTimer *ts)
{
QEMUTimerList *timer_list = ts->timer_list;
timer_del_locked(timer_list, ts);
}
/* modify the current timer so that it will be fired when current_time
>= expire_time. The corresponding callback will be called. */
void timer_mod_ns(QEMUTimer *ts, int64_t expire_time)
{
QEMUTimerList *timer_list = ts->timer_list;
bool rearm;
timer_del_locked(timer_list, ts);
rearm = timer_mod_ns_locked(timer_list, ts, expire_time);
if (rearm) {
timerlist_rearm(timer_list);
}
}
void timer_mod(QEMUTimer *ts, int64_t expire_time)
{
timer_mod_ns(ts, expire_time * ts->scale);
}
bool timer_pending(QEMUTimer *ts)
{
return ts->expire_time >= 0;
}
uint64_t timer_expire_time_ns(QEMUTimer *ts)
{
return timer_pending(ts) ? ts->expire_time : -1;
}
/* return the host CPU cycle counter and handle stop/restart */
int64_t cpu_get_ticks(void)
{