Claudio Fontana | 740b175 | 2020-08-19 13:17:19 +0200 | [diff] [blame] | 1 | /* |
| 2 | * QEMU System Emulator |
| 3 | * |
| 4 | * Copyright (c) 2003-2008 Fabrice Bellard |
| 5 | * |
| 6 | * Permission is hereby granted, free of charge, to any person obtaining a copy |
| 7 | * of this software and associated documentation files (the "Software"), to deal |
| 8 | * in the Software without restriction, including without limitation the rights |
| 9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| 10 | * copies of the Software, and to permit persons to whom the Software is |
| 11 | * furnished to do so, subject to the following conditions: |
| 12 | * |
| 13 | * The above copyright notice and this permission notice shall be included in |
| 14 | * all copies or substantial portions of the Software. |
| 15 | * |
| 16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| 17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| 18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| 19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| 20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| 21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| 22 | * THE SOFTWARE. |
| 23 | */ |
| 24 | |
| 25 | #ifndef TIMERS_STATE_H |
| 26 | #define TIMERS_STATE_H |
| 27 | |
| 28 | /* timers state, for sharing between icount and cpu-timers */ |
| 29 | |
| 30 | typedef struct TimersState { |
| 31 | /* Protected by BQL. */ |
| 32 | int64_t cpu_ticks_prev; |
| 33 | int64_t cpu_ticks_offset; |
| 34 | |
| 35 | /* |
| 36 | * Protect fields that can be respectively read outside the |
| 37 | * BQL, and written from multiple threads. |
| 38 | */ |
| 39 | QemuSeqLock vm_clock_seqlock; |
| 40 | QemuSpin vm_clock_lock; |
| 41 | |
| 42 | int16_t cpu_ticks_enabled; |
| 43 | |
| 44 | /* Conversion factor from emulated instructions to virtual clock ticks. */ |
| 45 | int16_t icount_time_shift; |
| 46 | |
| 47 | /* Compensate for varying guest execution speed. */ |
| 48 | int64_t qemu_icount_bias; |
| 49 | |
| 50 | int64_t vm_clock_warp_start; |
| 51 | int64_t cpu_clock_offset; |
| 52 | |
| 53 | /* Only written by TCG thread */ |
| 54 | int64_t qemu_icount; |
| 55 | |
| 56 | /* for adjusting icount */ |
| 57 | QEMUTimer *icount_rt_timer; |
| 58 | QEMUTimer *icount_vm_timer; |
| 59 | QEMUTimer *icount_warp_timer; |
| 60 | } TimersState; |
| 61 | |
| 62 | extern TimersState timers_state; |
| 63 | |
| 64 | /* |
| 65 | * icount needs this internal from cpu-timers when adjusting the icount shift. |
| 66 | */ |
| 67 | int64_t cpu_get_clock_locked(void); |
| 68 | |
| 69 | #endif /* TIMERS_STATE_H */ |