mirror of https://gitee.com/openkylin/qemu.git
70 lines
2.2 KiB
C
70 lines
2.2 KiB
C
/*
|
|
* QEMU System Emulator
|
|
*
|
|
* Copyright (c) 2003-2008 Fabrice Bellard
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files (the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions:
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in
|
|
* all copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
|
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
|
* THE SOFTWARE.
|
|
*/
|
|
|
|
#ifndef TIMERS_STATE_H
|
|
#define TIMERS_STATE_H
|
|
|
|
/* timers state, for sharing between icount and cpu-timers */
|
|
|
|
typedef struct TimersState {
|
|
/* Protected by BQL. */
|
|
int64_t cpu_ticks_prev;
|
|
int64_t cpu_ticks_offset;
|
|
|
|
/*
|
|
* Protect fields that can be respectively read outside the
|
|
* BQL, and written from multiple threads.
|
|
*/
|
|
QemuSeqLock vm_clock_seqlock;
|
|
QemuSpin vm_clock_lock;
|
|
|
|
int16_t cpu_ticks_enabled;
|
|
|
|
/* Conversion factor from emulated instructions to virtual clock ticks. */
|
|
int16_t icount_time_shift;
|
|
|
|
/* Compensate for varying guest execution speed. */
|
|
int64_t qemu_icount_bias;
|
|
|
|
int64_t vm_clock_warp_start;
|
|
int64_t cpu_clock_offset;
|
|
|
|
/* Only written by TCG thread */
|
|
int64_t qemu_icount;
|
|
|
|
/* for adjusting icount */
|
|
QEMUTimer *icount_rt_timer;
|
|
QEMUTimer *icount_vm_timer;
|
|
QEMUTimer *icount_warp_timer;
|
|
} TimersState;
|
|
|
|
extern TimersState timers_state;
|
|
|
|
/*
|
|
* icount needs this internal from cpu-timers when adjusting the icount shift.
|
|
*/
|
|
int64_t cpu_get_clock_locked(void);
|
|
|
|
#endif /* TIMERS_STATE_H */
|