1 /* 2 * General purpose implementation of a simple periodic countdown timer. 3 * 4 * Copyright (c) 2007 CodeSourcery. 5 * 6 * This code is licensed under the GNU LGPL. 7 */ 8 #ifndef PTIMER_H 9 #define PTIMER_H 10 11 #include "qemu-common.h" 12 #include "qemu/timer.h" 13 #include "migration/vmstate.h" 14 15 /* ptimer.c */ 16 typedef struct ptimer_state ptimer_state; 17 typedef void (*ptimer_cb)(void *opaque); 18 19 ptimer_state *ptimer_init(QEMUBH *bh); 20 void ptimer_set_period(ptimer_state *s, int64_t period); 21 void ptimer_set_freq(ptimer_state *s, uint32_t freq); 22 uint64_t ptimer_get_limit(ptimer_state *s); 23 void ptimer_set_limit(ptimer_state *s, uint64_t limit, int reload); 24 uint64_t ptimer_get_count(ptimer_state *s); 25 void ptimer_set_count(ptimer_state *s, uint64_t count); 26 void ptimer_run(ptimer_state *s, int oneshot); 27 void ptimer_stop(ptimer_state *s); 28 29 extern const VMStateDescription vmstate_ptimer; 30 31 #define VMSTATE_PTIMER(_field, _state) \ 32 VMSTATE_STRUCT_POINTER_V(_field, _state, 1, vmstate_ptimer, ptimer_state) 33 34 #define VMSTATE_PTIMER_ARRAY(_f, _s, _n) \ 35 VMSTATE_ARRAY_OF_POINTER_TO_STRUCT(_f, _s, _n, 0, \ 36 vmstate_ptimer, ptimer_state) 37 38 #endif 39