timers-state.h (2341B)
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 /* Icount delta used for shift auto adjust. */ 47 int64_t last_delta; 48 49 /* Compensate for varying guest execution speed. */ 50 aligned_int64_t qemu_icount_bias; 51 52 int64_t vm_clock_warp_start; 53 int64_t cpu_clock_offset; 54 55 /* Only written by TCG thread */ 56 int64_t qemu_icount; 57 58 /* for adjusting icount */ 59 QEMUTimer *icount_rt_timer; 60 QEMUTimer *icount_vm_timer; 61 QEMUTimer *icount_warp_timer; 62 } TimersState; 63 64 extern TimersState timers_state; 65 66 /* 67 * icount needs this internal from cpu-timers when adjusting the icount shift. 68 */ 69 int64_t cpu_get_clock_locked(void); 70 71 #endif /* TIMERS_STATE_H */