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 void ptimer_set_limit(ptimer_state *s, uint64_t limit, int reload); 23 uint64_t ptimer_get_count(ptimer_state *s); 24 void ptimer_set_count(ptimer_state *s, uint64_t count); 25 void ptimer_run(ptimer_state *s, int oneshot); 26 void ptimer_stop(ptimer_state *s); 27 28 extern const VMStateDescription vmstate_ptimer; 29 30 #define VMSTATE_PTIMER(_field, _state) { \ 31 .name = (stringify(_field)), \ 32 .version_id = (1), \ 33 .vmsd = &vmstate_ptimer, \ 34 .size = sizeof(ptimer_state *), \ 35 .flags = VMS_STRUCT|VMS_POINTER, \ 36 .offset = vmstate_offset_pointer(_state, _field, ptimer_state), \ 37 } 38 39 #endif 40