198 lines
7.4 KiB
Rust
198 lines
7.4 KiB
Rust
use anyhow::{Result, anyhow};
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use std::path::Path;
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use std::fs;
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use std::time::{Duration, Instant};
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use std::process::Command;
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use tracing::{debug, warn};
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use std::sync::Mutex;
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use crate::sal::traits::{SensorBus, ActuatorBus, EnvironmentGuard, HardwareWatchdog, PreflightAuditor, AuditStep, AuditError, SafetyStatus};
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use crate::sal::heuristic::discovery::SystemFactSheet;
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use crate::sal::heuristic::schema::HardwareDb;
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pub struct GenericLinuxSal {
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fact_sheet: SystemFactSheet,
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db: HardwareDb,
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suppressed_services: Mutex<Vec<String>>,
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last_valid_temp: Mutex<(f32, Instant)>,
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current_pl1: Mutex<f32>,
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last_energy: Mutex<(u64, Instant)>,
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}
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impl GenericLinuxSal {
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pub fn new(facts: SystemFactSheet, db: HardwareDb) -> Self {
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Self {
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db,
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suppressed_services: Mutex::new(Vec::new()),
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last_valid_temp: Mutex::new((0.0, Instant::now())),
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current_pl1: Mutex::new(15.0),
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last_energy: Mutex::new((0, Instant::now())),
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fact_sheet: facts,
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}
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}
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fn is_dell(&self) -> bool {
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self.fact_sheet.vendor.to_lowercase().contains("dell")
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}
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/// Read sysfs safely. We removed the thread-per-read timeout logic
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/// as it was inefficient. sysfs reads are generally fast enough.
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fn read_sysfs(&self, path: &Path) -> Result<String> {
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fs::read_to_string(path).map(|s| s.trim().to_string()).map_err(|e| anyhow!(e))
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}
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}
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impl PreflightAuditor for GenericLinuxSal {
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fn audit(&self) -> Box<dyn Iterator<Item = AuditStep> + '_> {
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let mut steps = Vec::new();
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for check in &self.db.preflight_checks {
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let status = Command::new("sh").arg("-c").arg(&check.check_cmd).status();
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steps.push(AuditStep {
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description: check.name.clone(),
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outcome: match status {
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Ok(s) if s.success() => Ok(()),
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_ => Err(AuditError::KernelIncompatible(check.fail_help.clone())),
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}
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});
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}
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for conflict_id in &self.fact_sheet.active_conflicts {
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if let Some(conflict) = self.db.conflicts.iter().find(|c| &c.id == conflict_id) {
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if conflict.severity == "Critical" {
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steps.push(AuditStep {
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description: format!("Conflict: {}", conflict.id),
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outcome: Err(AuditError::ToolMissing(conflict.help_text.clone())),
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});
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}
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}
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}
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Box::new(steps.into_iter())
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}
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}
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impl SensorBus for GenericLinuxSal {
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fn get_temp(&self) -> Result<f32> {
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let path = self.fact_sheet.temp_path.as_ref()
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.ok_or_else(|| anyhow!("No temperature sensor path found"))?;
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let content = self.read_sysfs(path)?;
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let temp = content.parse::<f32>()? / 1000.0;
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let mut last = self.last_valid_temp.lock().unwrap();
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if (temp - last.0).abs() > 0.01 { *last = (temp, Instant::now()); }
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Ok(temp)
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}
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fn get_power_w(&self) -> Result<f32> {
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let rapl_path = self.fact_sheet.rapl_paths.first()
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.ok_or_else(|| anyhow!("No RAPL path found"))?;
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let energy_path = rapl_path.join("energy_uj");
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let mut last = self.last_energy.lock().unwrap();
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let e2: u64 = self.read_sysfs(&energy_path)?.parse()?;
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let t2 = Instant::now();
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let (e1, t1) = *last;
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let delta_e = e2.wrapping_sub(e1);
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let delta_t = t2.duration_since(t1).as_secs_f32();
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*last = (e2, t2);
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if delta_t < 0.01 { return Ok(0.0); }
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Ok((delta_e as f32 / 1_000_000.0) / delta_t)
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}
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fn get_fan_rpms(&self) -> Result<Vec<u32>> {
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let mut rpms = Vec::new();
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for path in &self.fact_sheet.fan_paths {
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if let Ok(content) = self.read_sysfs(path) {
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if let Ok(rpm) = content.parse() { rpms.push(rpm); }
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}
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}
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Ok(rpms)
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}
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fn get_freq_mhz(&self) -> Result<f32> {
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let path = Path::new("/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq");
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if path.exists() {
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Ok(self.read_sysfs(path)?.parse::<f32>()? / 1000.0)
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} else {
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let cpuinfo = fs::read_to_string("/proc/cpuinfo")?;
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for line in cpuinfo.lines() {
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if line.starts_with("cpu MHz") {
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if let Some((_, mhz)) = line.split_once(':') {
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return Ok(mhz.trim().parse()?);
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}
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}
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}
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Err(anyhow!("Could not determine CPU frequency"))
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}
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}
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}
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impl ActuatorBus for GenericLinuxSal {
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fn set_fan_mode(&self, mode: &str) -> Result<()> {
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if self.is_dell() {
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let cmd = match mode {
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"manual" | "max" => self.db.ecosystems.get("dell").and_then(|e| e.fan_manual_mode_cmd.as_ref()),
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"auto" => self.db.ecosystems.get("dell").and_then(|e| e.fan_auto_mode_cmd.as_ref()),
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_ => return Err(anyhow!("Unsupported fan mode: {}", mode)),
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};
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if let Some(cmd_str) = cmd {
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let parts: Vec<&str> = cmd_str.split_whitespace().collect();
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Command::new(parts[0]).args(&parts[1..]).status()?;
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Ok(())
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} else { Err(anyhow!("Dell fan command missing")) }
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} else { Ok(()) }
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}
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fn set_sustained_power_limit(&self, watts: f32) -> Result<()> {
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let rapl_path = self.fact_sheet.rapl_paths.first().ok_or_else(|| anyhow!("No PL1 path"))?;
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fs::write(rapl_path.join("constraint_0_power_limit_uw"), ((watts * 1_000_000.0) as u64).to_string())?;
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*self.current_pl1.lock().unwrap() = watts;
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Ok(())
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}
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fn set_burst_power_limit(&self, watts: f32) -> Result<()> {
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let rapl_path = self.fact_sheet.rapl_paths.first().ok_or_else(|| anyhow!("No PL2 path"))?;
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fs::write(rapl_path.join("constraint_1_power_limit_uw"), ((watts * 1_000_000.0) as u64).to_string())?;
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Ok(())
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}
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}
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impl EnvironmentGuard for GenericLinuxSal {
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fn suppress(&self) -> Result<()> {
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let mut suppressed = self.suppressed_services.lock().unwrap();
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for conflict_id in &self.fact_sheet.active_conflicts {
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if let Some(conflict) = self.db.conflicts.iter().find(|c| &c.id == conflict_id) {
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for service in &conflict.services {
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if Command::new("systemctl").arg("stop").arg(service).status()?.success() {
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suppressed.push(service.clone());
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}
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}
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}
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}
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Ok(())
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}
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fn restore(&self) -> Result<()> {
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let mut suppressed = self.suppressed_services.lock().unwrap();
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for service in suppressed.drain(..) {
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let _ = Command::new("systemctl").arg("start").arg(service).status();
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}
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if self.is_dell() { let _ = self.set_fan_mode("auto"); }
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Ok(())
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}
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}
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impl HardwareWatchdog for GenericLinuxSal {
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fn get_safety_status(&self) -> Result<SafetyStatus> {
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let temp = self.get_temp()?;
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if temp > 100.0 {
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return Ok(SafetyStatus::EmergencyAbort(format!("Thermal runaway: {:.1}°C", temp)));
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}
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let last = self.last_valid_temp.lock().unwrap();
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if last.1.elapsed() > Duration::from_secs(5) {
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return Ok(SafetyStatus::EmergencyAbort("Temperature sensor stalled".to_string()));
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}
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Ok(SafetyStatus::Nominal)
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}
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}
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impl Drop for GenericLinuxSal {
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fn drop(&mut self) { let _ = self.restore(); }
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}
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