File:  [Qemu by Fabrice Bellard] / qemu / qemu-timer.h
Revision 1.1: download - view: text, annotated - select for diffs
Tue Apr 24 16:47:40 2018 UTC (3 years, 5 months ago) by root
CVS tags: MAIN, HEAD
Initial revision

    1: #ifndef QEMU_TIMER_H
    2: #define QEMU_TIMER_H
    3: 
    4: /* timers */
    5: 
    6: typedef struct QEMUClock QEMUClock;
    7: typedef void QEMUTimerCB(void *opaque);
    8: 
    9: /* The real time clock should be used only for stuff which does not
   10:    change the virtual machine state, as it is run even if the virtual
   11:    machine is stopped. The real time clock has a frequency of 1000
   12:    Hz. */
   13: extern QEMUClock *rt_clock;
   14: 
   15: /* The virtual clock is only run during the emulation. It is stopped
   16:    when the virtual machine is stopped. Virtual timers use a high
   17:    precision clock, usually cpu cycles (use ticks_per_sec). */
   18: extern QEMUClock *vm_clock;
   19: 
   20: int64_t qemu_get_clock(QEMUClock *clock);
   21: 
   22: QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque);
   23: void qemu_free_timer(QEMUTimer *ts);
   24: void qemu_del_timer(QEMUTimer *ts);
   25: void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time);
   26: int qemu_timer_pending(QEMUTimer *ts);
   27: 
   28: extern int64_t ticks_per_sec;
   29: 
   30: void qemu_get_timer(QEMUFile *f, QEMUTimer *ts);
   31: void qemu_put_timer(QEMUFile *f, QEMUTimer *ts);
   32: 
   33: /* ptimer.c */
   34: typedef struct ptimer_state ptimer_state;
   35: typedef void (*ptimer_cb)(void *opaque);
   36: 
   37: ptimer_state *ptimer_init(QEMUBH *bh);
   38: void ptimer_set_period(ptimer_state *s, int64_t period);
   39: void ptimer_set_freq(ptimer_state *s, uint32_t freq);
   40: void ptimer_set_limit(ptimer_state *s, uint64_t limit, int reload);
   41: uint64_t ptimer_get_count(ptimer_state *s);
   42: void ptimer_set_count(ptimer_state *s, uint64_t count);
   43: void ptimer_run(ptimer_state *s, int oneshot);
   44: void ptimer_stop(ptimer_state *s);
   45: void qemu_put_ptimer(QEMUFile *f, ptimer_state *s);
   46: void qemu_get_ptimer(QEMUFile *f, ptimer_state *s);
   47: 
   48: #endif

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