mirror of https://gitee.com/openkylin/qemu.git
53 lines
1.7 KiB
C
53 lines
1.7 KiB
C
#ifndef QEMU_TIMER_H
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#define QEMU_TIMER_H
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/* timers */
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typedef struct QEMUClock QEMUClock;
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typedef void QEMUTimerCB(void *opaque);
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/* The real time clock should be used only for stuff which does not
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change the virtual machine state, as it is run even if the virtual
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machine is stopped. The real time clock has a frequency of 1000
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Hz. */
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extern QEMUClock *rt_clock;
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/* The virtual clock is only run during the emulation. It is stopped
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when the virtual machine is stopped. Virtual timers use a high
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precision clock, usually cpu cycles (use ticks_per_sec). */
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extern QEMUClock *vm_clock;
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int64_t qemu_get_clock(QEMUClock *clock);
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QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque);
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void qemu_free_timer(QEMUTimer *ts);
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void qemu_del_timer(QEMUTimer *ts);
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void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time);
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int qemu_timer_pending(QEMUTimer *ts);
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int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time);
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static inline int64_t get_ticks_per_sec(void)
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{
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return 1000000000LL;
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}
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void qemu_get_timer(QEMUFile *f, QEMUTimer *ts);
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void qemu_put_timer(QEMUFile *f, QEMUTimer *ts);
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/* ptimer.c */
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typedef struct ptimer_state ptimer_state;
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typedef void (*ptimer_cb)(void *opaque);
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ptimer_state *ptimer_init(QEMUBH *bh);
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void ptimer_set_period(ptimer_state *s, int64_t period);
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void ptimer_set_freq(ptimer_state *s, uint32_t freq);
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void ptimer_set_limit(ptimer_state *s, uint64_t limit, int reload);
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uint64_t ptimer_get_count(ptimer_state *s);
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void ptimer_set_count(ptimer_state *s, uint64_t count);
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void ptimer_run(ptimer_state *s, int oneshot);
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void ptimer_stop(ptimer_state *s);
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void qemu_put_ptimer(QEMUFile *f, ptimer_state *s);
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void qemu_get_ptimer(QEMUFile *f, ptimer_state *s);
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#endif
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