mirror of
https://github.com/qemu/qemu.git
synced 2024-11-26 12:23:36 +08:00
41c872b6bf
Some places use get_clock directly because they want to access the rt_clock with nanosecond precision. Add a function to do exactly that instead of using internal interfaces. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
61 lines
2.1 KiB
C
61 lines
2.1 KiB
C
#ifndef QEMU_TIMER_H
|
|
#define QEMU_TIMER_H
|
|
|
|
/* timers */
|
|
|
|
typedef struct QEMUClock QEMUClock;
|
|
typedef void QEMUTimerCB(void *opaque);
|
|
|
|
/* The real time clock should be used only for stuff which does not
|
|
change the virtual machine state, as it is run even if the virtual
|
|
machine is stopped. The real time clock has a frequency of 1000
|
|
Hz. */
|
|
extern QEMUClock *rt_clock;
|
|
|
|
/* The virtual clock is only run during the emulation. It is stopped
|
|
when the virtual machine is stopped. Virtual timers use a high
|
|
precision clock, usually cpu cycles (use ticks_per_sec). */
|
|
extern QEMUClock *vm_clock;
|
|
|
|
/* The host clock should be use for device models that emulate accurate
|
|
real time sources. It will continue to run when the virtual machine
|
|
is suspended, and it will reflect system time changes the host may
|
|
undergo (e.g. due to NTP). The host clock has the same precision as
|
|
the virtual clock. */
|
|
extern QEMUClock *host_clock;
|
|
|
|
int64_t qemu_get_clock(QEMUClock *clock);
|
|
int64_t qemu_get_clock_ns(QEMUClock *clock);
|
|
|
|
QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque);
|
|
void qemu_free_timer(QEMUTimer *ts);
|
|
void qemu_del_timer(QEMUTimer *ts);
|
|
void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time);
|
|
int qemu_timer_pending(QEMUTimer *ts);
|
|
int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time);
|
|
|
|
static inline int64_t get_ticks_per_sec(void)
|
|
{
|
|
return 1000000000LL;
|
|
}
|
|
|
|
void qemu_get_timer(QEMUFile *f, QEMUTimer *ts);
|
|
void qemu_put_timer(QEMUFile *f, QEMUTimer *ts);
|
|
|
|
/* ptimer.c */
|
|
typedef struct ptimer_state ptimer_state;
|
|
typedef void (*ptimer_cb)(void *opaque);
|
|
|
|
ptimer_state *ptimer_init(QEMUBH *bh);
|
|
void ptimer_set_period(ptimer_state *s, int64_t period);
|
|
void ptimer_set_freq(ptimer_state *s, uint32_t freq);
|
|
void ptimer_set_limit(ptimer_state *s, uint64_t limit, int reload);
|
|
uint64_t ptimer_get_count(ptimer_state *s);
|
|
void ptimer_set_count(ptimer_state *s, uint64_t count);
|
|
void ptimer_run(ptimer_state *s, int oneshot);
|
|
void ptimer_stop(ptimer_state *s);
|
|
void qemu_put_ptimer(QEMUFile *f, ptimer_state *s);
|
|
void qemu_get_ptimer(QEMUFile *f, ptimer_state *s);
|
|
|
|
#endif
|