C++ runstate_is_running函数代码示例

static void sdl_update_caption(struct sdl2_console *scon)
{
    char win_title[1024];
    char icon_title[1024];
    const char *status = "";

    if (!runstate_is_running()) {
        status = " [Stopped]";
    } else if (gui_grab) {
        if (alt_grab) {
            status = " - Press Ctrl-Alt-Shift to exit grab";
        } else if (ctrl_grab) {
            status = " - Press Right-Ctrl to exit grab";
        } else {
            status = " - Press Ctrl-Alt to exit grab";
        }
    }

    if (qemu_name) {
        snprintf(win_title, sizeof(win_title), "QEMU (%s-%d)%s", qemu_name,
                 scon->idx, status);
        snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
    } else {
        snprintf(win_title, sizeof(win_title), "QEMU%s", status);
        snprintf(icon_title, sizeof(icon_title), "QEMU");
    }

    if (scon->real_window) {
        SDL_SetWindowTitle(scon->real_window, win_title);
    }
}

static void sdl_update_caption(void)
{
    char win_title[1024];
    char icon_title[1024];
    const char *status = "";

    if (!runstate_is_running())
        status = " [Stopped]";
    else if (gui_grab) {
        if (alt_grab)
            status = " - Press Ctrl-Alt-Shift to exit mouse grab";
        else if (ctrl_grab)
            status = " - Press Right-Ctrl to exit mouse grab";
        else
            status = " - Press Ctrl-Alt to exit mouse grab";
    }

    if (qemu_name) {
        snprintf(win_title, sizeof(win_title), "QEMU (%s)%s", qemu_name, status);
        snprintf(icon_title, sizeof(icon_title), "QEMU (%s)", qemu_name);
    } else {
        snprintf(win_title, sizeof(win_title), "QEMU%s", status);
        snprintf(icon_title, sizeof(icon_title), "QEMU");
    }

    SDL_WM_SetCaption(win_title, icon_title);
}

static void icount_adjust(void)
{
    int64_t cur_time;
    int64_t cur_icount;
    int64_t delta;
    static int64_t last_delta;
    /* If the VM is not running, then do nothing.  */
    if (!runstate_is_running()) {
        return;
    }
    cur_time = cpu_get_clock();
    cur_icount = qemu_get_clock_ns(vm_clock);
    delta = cur_icount - cur_time;
    /* FIXME: This is a very crude algorithm, somewhat prone to oscillation.  */
    if (delta > 0
        && last_delta + ICOUNT_WOBBLE < delta * 2
        && icount_time_shift > 0) {
        /* The guest is getting too far ahead.  Slow time down.  */
        icount_time_shift--;
    }
    if (delta < 0
        && last_delta - ICOUNT_WOBBLE > delta * 2
        && icount_time_shift < MAX_ICOUNT_SHIFT) {
        /* The guest is getting too far behind.  Speed time up.  */
        icount_time_shift++;
    }
    last_delta = delta;
    qemu_icount_bias = cur_icount - (qemu_icount << icount_time_shift);
}

static void migrate_fd_put_ready(void *opaque)
{
    MigrationState *s = opaque;
    int ret;

    if (s->state != MIG_STATE_ACTIVE) {
        DPRINTF("put_ready returning because of non-active state\n");
        return;
    }

    DPRINTF("iterate\n");
    ret = qemu_savevm_state_iterate(s->mon, s->file);
    if (ret < 0) {
        migrate_fd_error(s);
    } else if (ret == 1) {
        int old_vm_running = runstate_is_running();

        DPRINTF("done iterating\n");
        vm_stop_force_state(RUN_STATE_FINISH_MIGRATE);

        if (qemu_savevm_state_complete(s->mon, s->file) < 0) {
            migrate_fd_error(s);
        } else {
            migrate_fd_completed(s);
        }
        if (s->state != MIG_STATE_COMPLETED) {
            if (old_vm_running) {
                vm_start();
            }
        }
    }
}

static void icount_warp_rt(void *opaque)
{
    if (vm_clock_warp_start == -1) {
        return;
    }

    if (runstate_is_running()) {
        int64_t clock = qemu_get_clock_ns(rt_clock);
        int64_t warp_delta = clock - vm_clock_warp_start;
        if (use_icount == 1) {
            qemu_icount_bias += warp_delta;
        } else {
            /*
             * In adaptive mode, do not let the vm_clock run too
             * far ahead of real time.
             */
            int64_t cur_time = cpu_get_clock();
            int64_t cur_icount = qemu_get_clock_ns(vm_clock);
            int64_t delta = cur_time - cur_icount;
            qemu_icount_bias += MIN(warp_delta, delta);
        }
        if (qemu_clock_expired(vm_clock)) {
            qemu_notify_event();
        }
    }
    vm_clock_warp_start = -1;
}

/* does a state transition even if the VM is already stopped,
   current state is forgotten forever */
void vm_stop_force_state(RunState state)
{
    if (runstate_is_running()) {
        vm_stop(state);
    } else {
        runstate_set(state);
    }
}

static int cpu_can_run(CPUArchState *env)
{
    if (env->stop) {
        return 0;
    }
    if (env->stopped || !runstate_is_running()) {
        return 0;
    }
    return 1;
}

static bool cpu_can_run(CPUState *cpu)
{
    if (cpu->stop) {
        return false;
    }
    if (cpu->stopped || !runstate_is_running()) {
        return false;
    }
    return true;
}

/* does a state transition even if the VM is already stopped,
   current state is forgotten forever */
void vm_stop_force_state(RunState state)
{
    if (runstate_is_running()) {
        vm_stop(state);
    } else {
        //if(!mthread){
	  runstate_set(state);
	//}
    }
}

/* does a state transition even if the VM is already stopped,
   current state is forgotten forever */
int vm_stop_force_state(RunState state)
{
    if (runstate_is_running()) {
        return vm_stop(state);
    } else {
        runstate_set(state);
        /* Make sure to return an error if the flush in a previous vm_stop()
         * failed. */
        return bdrv_flush_all();
    }
}

static void DMA_run(void *opaque)
{
    struct fs_dma_ctrl *etraxfs_dmac = opaque;
    int p = 1;

    if (runstate_is_running())
        p = etraxfs_dmac_run(etraxfs_dmac);

    if (p)
        qemu_bh_schedule_idle(etraxfs_dmac->bh);
}

static void do_vm_stop(RunState state)
{
    if (runstate_is_running()) {
        cpu_disable_ticks();
        pause_all_vcpus();
        runstate_set(state);
        vm_state_notify(0, state);
        bdrv_drain_all();
        bdrv_flush_all();
        monitor_protocol_event(QEVENT_STOP, NULL);
    }
}

static bool cpu_thread_is_idle(CPUArchState *env)
{
    if (env->stop || env->queued_work_first) {
        return false;
    }
    if (env->stopped || !runstate_is_running()) {
        return true;
    }
    if (!env->halted || qemu_cpu_has_work(env) || kvm_irqchip_in_kernel()) {
        return false;
    }
    return true;
}

static void do_vm_stop(RunState state)
{
    if (runstate_is_running()) {
        cpu_disable_ticks();
        pause_all_vcpus();
	//if(!mthread){ // TLC
        	runstate_set(state);
	//}
        vm_state_notify(0, state);
        qemu_aio_flush();
        bdrv_flush_all();
        monitor_protocol_event(QEVENT_STOP, NULL);
    }
}

static bool cpu_thread_is_idle(CPUArchState *env)
{
    CPUState *cpu = ENV_GET_CPU(env);

    if (cpu->stop || cpu->queued_work_first) {
        return false;
    }
    if (cpu->stopped || !runstate_is_running()) {
        return true;
    }
    if (!env->halted || qemu_cpu_has_work(cpu) ||
        kvm_async_interrupts_enabled()) {
        return false;
    }
    return true;
}