| 1 | /* |
| 2 | * CPU timers state API |
| 3 | * |
| 4 | * Copyright 2020 SUSE LLC |
| 5 | * |
| 6 | * This work is licensed under the terms of the GNU GPL, version 2 or later. |
| 7 | * See the COPYING file in the top-level directory. |
| 8 | * |
| 9 | */ |
| 10 | #ifndef SYSTEM_CPU_TIMERS_H |
| 11 | #define SYSTEM_CPU_TIMERS_H |
| 12 | |
| 13 | #include "qemu/timer.h" |
| 14 | |
| 15 | /* init the whole cpu timers API, including icount, ticks, and cpu_throttle */ |
| 16 | void cpu_timers_init(void); |
| 17 | |
| 18 | /* |
| 19 | * CPU Ticks and Clock |
| 20 | */ |
| 21 | |
| 22 | /* Caller must hold BQL */ |
| 23 | void cpu_enable_ticks(void); |
| 24 | /* Caller must hold BQL */ |
| 25 | void cpu_disable_ticks(void); |
| 26 | |
| 27 | /* |
| 28 | * return the time elapsed in VM between vm_start and vm_stop. |
| 29 | * cpu_get_ticks() uses units of the host CPU cycle counter. |
| 30 | */ |
| 31 | int64_t cpu_get_ticks(void); |
| 32 | |
| 33 | /* |
| 34 | * Returns the monotonic time elapsed in VM, i.e., |
| 35 | * the time between vm_start and vm_stop |
| 36 | */ |
| 37 | int64_t cpu_get_clock(void); |
| 38 | |
| 39 | void qemu_timer_notify_cb(void *opaque, QEMUClockType type); |
| 40 | |
| 41 | /* get/set VIRTUAL clock and VM elapsed ticks via the cpus accel interface */ |
| 42 | int64_t cpus_get_virtual_clock(void); |
| 43 | void cpus_set_virtual_clock(int64_t new_time); |
| 44 | int64_t cpus_get_elapsed_ticks(void); |
| 45 | |
| 46 | #endif /* SYSTEM_CPU_TIMERS_H */ |