root / qemu-timer.h @ 64e58fe5
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1 | 87ecb68b | pbrook | #ifndef QEMU_TIMER_H
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2 | 87ecb68b | pbrook | #define QEMU_TIMER_H
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3 | 87ecb68b | pbrook | |
4 | 87ecb68b | pbrook | /* timers */
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5 | 87ecb68b | pbrook | |
6 | 87ecb68b | pbrook | typedef struct QEMUClock QEMUClock; |
7 | 87ecb68b | pbrook | typedef void QEMUTimerCB(void *opaque); |
8 | 87ecb68b | pbrook | |
9 | 87ecb68b | pbrook | /* The real time clock should be used only for stuff which does not
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10 | 87ecb68b | pbrook | change the virtual machine state, as it is run even if the virtual
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11 | 87ecb68b | pbrook | machine is stopped. The real time clock has a frequency of 1000
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12 | 87ecb68b | pbrook | Hz. */
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13 | 87ecb68b | pbrook | extern QEMUClock *rt_clock;
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14 | 87ecb68b | pbrook | |
15 | 87ecb68b | pbrook | /* The virtual clock is only run during the emulation. It is stopped
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16 | 87ecb68b | pbrook | when the virtual machine is stopped. Virtual timers use a high
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17 | 87ecb68b | pbrook | precision clock, usually cpu cycles (use ticks_per_sec). */
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18 | 87ecb68b | pbrook | extern QEMUClock *vm_clock;
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19 | 87ecb68b | pbrook | |
20 | 21d5d12b | Jan Kiszka | /* The host clock should be use for device models that emulate accurate
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21 | 21d5d12b | Jan Kiszka | real time sources. It will continue to run when the virtual machine
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22 | 21d5d12b | Jan Kiszka | is suspended, and it will reflect system time changes the host may
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23 | 21d5d12b | Jan Kiszka | undergo (e.g. due to NTP). The host clock has the same precision as
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24 | 21d5d12b | Jan Kiszka | the virtual clock. */
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25 | 21d5d12b | Jan Kiszka | extern QEMUClock *host_clock;
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26 | 21d5d12b | Jan Kiszka | |
27 | 87ecb68b | pbrook | int64_t qemu_get_clock(QEMUClock *clock); |
28 | 87ecb68b | pbrook | |
29 | 87ecb68b | pbrook | QEMUTimer *qemu_new_timer(QEMUClock *clock, QEMUTimerCB *cb, void *opaque);
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30 | 87ecb68b | pbrook | void qemu_free_timer(QEMUTimer *ts);
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31 | 87ecb68b | pbrook | void qemu_del_timer(QEMUTimer *ts);
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32 | 87ecb68b | pbrook | void qemu_mod_timer(QEMUTimer *ts, int64_t expire_time);
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33 | 87ecb68b | pbrook | int qemu_timer_pending(QEMUTimer *ts);
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34 | 2430ffe4 | Stefano Stabellini | int qemu_timer_expired(QEMUTimer *timer_head, int64_t current_time);
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35 | 87ecb68b | pbrook | |
36 | 274dfed8 | Anthony Liguori | static inline int64_t get_ticks_per_sec(void) |
37 | 274dfed8 | Anthony Liguori | { |
38 | 274dfed8 | Anthony Liguori | return 1000000000LL; |
39 | 274dfed8 | Anthony Liguori | } |
40 | 87ecb68b | pbrook | |
41 | 87ecb68b | pbrook | void qemu_get_timer(QEMUFile *f, QEMUTimer *ts);
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42 | 87ecb68b | pbrook | void qemu_put_timer(QEMUFile *f, QEMUTimer *ts);
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43 | 87ecb68b | pbrook | |
44 | 87ecb68b | pbrook | /* ptimer.c */
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45 | 87ecb68b | pbrook | typedef struct ptimer_state ptimer_state; |
46 | 87ecb68b | pbrook | typedef void (*ptimer_cb)(void *opaque); |
47 | 87ecb68b | pbrook | |
48 | 87ecb68b | pbrook | ptimer_state *ptimer_init(QEMUBH *bh); |
49 | 87ecb68b | pbrook | void ptimer_set_period(ptimer_state *s, int64_t period);
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50 | 87ecb68b | pbrook | void ptimer_set_freq(ptimer_state *s, uint32_t freq);
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51 | 87ecb68b | pbrook | void ptimer_set_limit(ptimer_state *s, uint64_t limit, int reload); |
52 | 87ecb68b | pbrook | uint64_t ptimer_get_count(ptimer_state *s); |
53 | 87ecb68b | pbrook | void ptimer_set_count(ptimer_state *s, uint64_t count);
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54 | 87ecb68b | pbrook | void ptimer_run(ptimer_state *s, int oneshot); |
55 | 87ecb68b | pbrook | void ptimer_stop(ptimer_state *s);
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56 | 87ecb68b | pbrook | void qemu_put_ptimer(QEMUFile *f, ptimer_state *s);
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57 | 87ecb68b | pbrook | void qemu_get_ptimer(QEMUFile *f, ptimer_state *s);
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58 | 87ecb68b | pbrook | |
59 | 87ecb68b | pbrook | #endif |