include/system/cpu-timers-internal.h

740b1759SClaudio Fontana/*
740b1759SClaudio Fontana * QEMU System Emulator
740b1759SClaudio Fontana *
740b1759SClaudio Fontana * Copyright (c) 2003-2008 Fabrice Bellard
740b1759SClaudio Fontana *
740b1759SClaudio Fontana * Permission is hereby granted, free of charge, to any person obtaining a copy
740b1759SClaudio Fontana * of this software and associated documentation files (the "Software"), to deal
740b1759SClaudio Fontana * in the Software without restriction, including without limitation the rights
740b1759SClaudio Fontana * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
740b1759SClaudio Fontana * copies of the Software, and to permit persons to whom the Software is
740b1759SClaudio Fontana * furnished to do so, subject to the following conditions:
740b1759SClaudio Fontana *
740b1759SClaudio Fontana * The above copyright notice and this permission notice shall be included in
740b1759SClaudio Fontana * all copies or substantial portions of the Software.
740b1759SClaudio Fontana *
740b1759SClaudio Fontana * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
740b1759SClaudio Fontana * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
740b1759SClaudio Fontana * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
740b1759SClaudio Fontana * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
740b1759SClaudio Fontana * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
740b1759SClaudio Fontana * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
740b1759SClaudio Fontana * THE SOFTWARE.
740b1759SClaudio Fontana */
740b1759SClaudio Fontana
740b1759SClaudio Fontana#ifndef TIMERS_STATE_H
740b1759SClaudio Fontana#define TIMERS_STATE_H
740b1759SClaudio Fontana
740b1759SClaudio Fontana/* timers state, for sharing between icount and cpu-timers */
740b1759SClaudio Fontana
740b1759SClaudio Fontanatypedef struct TimersState {
740b1759SClaudio Fontana    /* Protected by BQL.  */
740b1759SClaudio Fontana    int64_t cpu_ticks_prev;
740b1759SClaudio Fontana    int64_t cpu_ticks_offset;
740b1759SClaudio Fontana
740b1759SClaudio Fontana    /*
740b1759SClaudio Fontana     * Protect fields that can be respectively read outside the
740b1759SClaudio Fontana     * BQL, and written from multiple threads.
740b1759SClaudio Fontana     */
740b1759SClaudio Fontana    QemuSeqLock vm_clock_seqlock;
740b1759SClaudio Fontana    QemuSpin vm_clock_lock;
740b1759SClaudio Fontana
740b1759SClaudio Fontana    int16_t cpu_ticks_enabled;
740b1759SClaudio Fontana
740b1759SClaudio Fontana    /* Conversion factor from emulated instructions to virtual clock ticks.  */
740b1759SClaudio Fontana    int16_t icount_time_shift;
fe852ac2SPavel Dovgalyuk    /* Icount delta used for shift auto adjust. */
fe852ac2SPavel Dovgalyuk    int64_t last_delta;
740b1759SClaudio Fontana
740b1759SClaudio Fontana    /* Compensate for varying guest execution speed.  */
*9ef0c6d6SRichard Henderson    aligned_int64_t qemu_icount_bias;
740b1759SClaudio Fontana
740b1759SClaudio Fontana    int64_t vm_clock_warp_start;
740b1759SClaudio Fontana    int64_t cpu_clock_offset;
740b1759SClaudio Fontana
740b1759SClaudio Fontana    /* Only written by TCG thread */
740b1759SClaudio Fontana    int64_t qemu_icount;
740b1759SClaudio Fontana
740b1759SClaudio Fontana    /* for adjusting icount */
740b1759SClaudio Fontana    QEMUTimer *icount_rt_timer;
740b1759SClaudio Fontana    QEMUTimer *icount_vm_timer;
740b1759SClaudio Fontana    QEMUTimer *icount_warp_timer;
740b1759SClaudio Fontana} TimersState;
740b1759SClaudio Fontana
740b1759SClaudio Fontanaextern TimersState timers_state;
740b1759SClaudio Fontana
740b1759SClaudio Fontana/*
740b1759SClaudio Fontana * icount needs this internal from cpu-timers when adjusting the icount shift.
740b1759SClaudio Fontana */
740b1759SClaudio Fontanaint64_t cpu_get_clock_locked(void);
740b1759SClaudio Fontana
740b1759SClaudio Fontana#endif /* TIMERS_STATE_H */