quantrs2_core/
real_time_compilation.rs

1//! Real-Time Quantum Compilation
2//!
3//! Just-in-time compilation of quantum gates during execution with
4//! adaptive optimization and hardware-specific targeting.
5use crate::error::QuantRS2Error;
6use crate::gate::GateOp;
7use crate::qubit::QubitId;
8use scirs2_core::ndarray::Array2;
9use scirs2_core::Complex64;
10use std::collections::HashMap;
11use std::sync::{Arc, Mutex, RwLock};
12use std::time::{Duration, Instant};
13use tokio::sync::oneshot;
14use uuid::Uuid;
15fn generate_uuid() -> Uuid {
16    Uuid::new_v4()
17}
18/// Real-time quantum compiler
19#[derive(Debug)]
20pub struct RealTimeQuantumCompiler {
21    pub compiler_id: Uuid,
22    pub compilation_cache: Arc<RwLock<CompilationCache>>,
23    pub hardware_targets: Vec<Arc<dyn HardwareTarget>>,
24    pub optimization_pipeline: OptimizationPipeline,
25    pub compilation_queue: Arc<Mutex<Vec<CompilationTask>>>,
26    pub active_compilations: Arc<Mutex<HashMap<Uuid, CompilationContext>>>,
27    pub performance_monitor: PerformanceMonitor,
28}
29/// Hardware target abstraction
30pub trait HardwareTarget: Send + Sync + std::fmt::Debug {
31    fn target_name(&self) -> &str;
32    fn native_gates(&self) -> Vec<String>;
33    fn qubit_connectivity(&self) -> Vec<(usize, usize)>;
34    fn gate_fidelities(&self) -> HashMap<String, f64>;
35    fn gate_times(&self) -> HashMap<String, Duration>;
36    fn coherence_times(&self) -> Vec<Duration>;
37    fn compile_gate(
38        &self,
39        gate: &dyn GateOp,
40        context: &CompilationContext,
41    ) -> Result<CompiledGate, QuantRS2Error>;
42    fn optimize_circuit(
43        &self,
44        circuit: &[CompiledGate],
45    ) -> Result<Vec<CompiledGate>, QuantRS2Error>;
46}
47#[derive(Debug)]
48pub struct CompilationTask {
49    pub task_id: Uuid,
50    pub gate: Box<dyn GateOp>,
51    pub target_hardware: String,
52    pub optimization_level: OptimizationLevel,
53    pub deadline: Option<Instant>,
54    pub priority: CompilationPriority,
55    pub response_channel: Option<oneshot::Sender<Result<CompiledGate, QuantRS2Error>>>,
56}
57#[derive(Debug, Clone)]
58pub struct CompilationContext {
59    pub target_hardware: String,
60    pub qubit_mapping: HashMap<QubitId, usize>,
61    pub gate_sequence: Vec<CompiledGate>,
62    pub current_fidelity: f64,
63    pub compilation_time: Duration,
64    pub optimization_hints: Vec<OptimizationHint>,
65}
66#[derive(Debug, Clone)]
67pub enum OptimizationLevel {
68    None,
69    Basic,
70    Aggressive,
71    Adaptive,
72}
73#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord)]
74pub enum CompilationPriority {
75    Low = 0,
76    Normal = 1,
77    High = 2,
78    Critical = 3,
79}
80#[derive(Debug, Clone, PartialEq, Eq)]
81pub enum OptimizationHint {
82    MinimizeDepth,
83    MinimizeGateCount,
84    MaximizeFidelity,
85    OptimizeForLatency,
86    PreserveTiming,
87}
88impl RealTimeQuantumCompiler {
89    /// Create a new real-time quantum compiler
90    pub fn new() -> Self {
91        Self {
92            compiler_id: Uuid::new_v4(),
93            compilation_cache: Arc::new(RwLock::new(CompilationCache::new(10000))),
94            hardware_targets: Vec::new(),
95            optimization_pipeline: OptimizationPipeline::new(),
96            compilation_queue: Arc::new(Mutex::new(Vec::new())),
97            active_compilations: Arc::new(Mutex::new(HashMap::new())),
98            performance_monitor: PerformanceMonitor::new(),
99        }
100    }
101    /// Add a hardware target
102    pub fn add_hardware_target(&mut self, target: Arc<dyn HardwareTarget>) {
103        self.hardware_targets.push(target);
104    }
105    /// Compile a gate for real-time execution
106    pub async fn compile_gate_realtime(
107        &self,
108        gate: Box<dyn GateOp>,
109        target_hardware: String,
110        optimization_level: OptimizationLevel,
111        deadline: Option<Duration>,
112    ) -> Result<CompiledGate, QuantRS2Error> {
113        let task_id = generate_uuid();
114        let start_time = Instant::now();
115        if let Some(cached_result) =
116            self.check_cache(gate.as_ref(), &target_hardware, &optimization_level)
117        {
118            self.performance_monitor
119                .record_cache_hit(start_time.elapsed());
120            return Ok(cached_result);
121        }
122        let context = CompilationContext {
123            target_hardware: target_hardware.clone(),
124            qubit_mapping: Self::create_qubit_mapping(gate.as_ref())?,
125            gate_sequence: Vec::new(),
126            current_fidelity: 1.0,
127            compilation_time: Duration::ZERO,
128            optimization_hints: Self::infer_optimization_hints(gate.as_ref(), &optimization_level),
129        };
130        {
131            let mut active = self
132                .active_compilations
133                .lock()
134                .expect("active_compilations mutex poisoned");
135            active.insert(task_id, context.clone());
136        }
137        let hardware = self.find_hardware_target(&target_hardware)?;
138        let compilation_result = self
139            .perform_compilation(
140                gate.as_ref(),
141                &hardware,
142                &context,
143                &optimization_level,
144                deadline.map(|d| start_time + d),
145            )
146            .await;
147        {
148            let mut active = self
149                .active_compilations
150                .lock()
151                .expect("active_compilations mutex poisoned");
152            active.remove(&task_id);
153        }
154        match compilation_result {
155            Ok(compiled_gate) => {
156                self.cache_compilation_result(
157                    gate.as_ref(),
158                    &target_hardware,
159                    &optimization_level,
160                    &compiled_gate,
161                );
162                self.performance_monitor.record_compilation_success(
163                    start_time.elapsed(),
164                    compiled_gate.estimated_fidelity,
165                    compiled_gate.gate_sequence.len(),
166                );
167                Ok(compiled_gate)
168            }
169            Err(e) => {
170                self.performance_monitor
171                    .record_compilation_failure(start_time.elapsed());
172                Err(e)
173            }
174        }
175    }
176    /// Check compilation cache
177    fn check_cache(
178        &self,
179        gate: &dyn GateOp,
180        target_hardware: &str,
181        optimization_level: &OptimizationLevel,
182    ) -> Option<CompiledGate> {
183        let cache_key = Self::generate_cache_key(gate, target_hardware, optimization_level);
184        let cache = self
185            .compilation_cache
186            .read()
187            .expect("compilation_cache RwLock poisoned");
188        cache.get(&cache_key).cloned()
189    }
190    /// Cache compilation result
191    fn cache_compilation_result(
192        &self,
193        gate: &dyn GateOp,
194        target_hardware: &str,
195        optimization_level: &OptimizationLevel,
196        compiled_gate: &CompiledGate,
197    ) {
198        let cache_key = Self::generate_cache_key(gate, target_hardware, optimization_level);
199        let mut cache = self
200            .compilation_cache
201            .write()
202            .expect("compilation_cache RwLock poisoned");
203        cache.insert(cache_key, compiled_gate.clone());
204    }
205    /// Generate cache key for a compilation
206    fn generate_cache_key(
207        gate: &dyn GateOp,
208        target_hardware: &str,
209        optimization_level: &OptimizationLevel,
210    ) -> String {
211        use std::collections::hash_map::DefaultHasher;
212        use std::hash::{Hash, Hasher};
213        let mut hasher = DefaultHasher::new();
214        gate.name().hash(&mut hasher);
215        gate.qubits().hash(&mut hasher);
216        target_hardware.hash(&mut hasher);
217        match optimization_level {
218            OptimizationLevel::None => "none".hash(&mut hasher),
219            OptimizationLevel::Basic => "basic".hash(&mut hasher),
220            OptimizationLevel::Aggressive => "aggressive".hash(&mut hasher),
221            OptimizationLevel::Adaptive => "adaptive".hash(&mut hasher),
222        }
223        format!("{}_{}", target_hardware, hasher.finish())
224    }
225    /// Create qubit mapping for gate
226    fn create_qubit_mapping(gate: &dyn GateOp) -> Result<HashMap<QubitId, usize>, QuantRS2Error> {
227        let mut mapping = HashMap::new();
228        for (index, &qubit_id) in gate.qubits().iter().enumerate() {
229            mapping.insert(qubit_id, index);
230        }
231        Ok(mapping)
232    }
233    /// Infer optimization hints from gate and level
234    fn infer_optimization_hints(
235        gate: &dyn GateOp,
236        level: &OptimizationLevel,
237    ) -> Vec<OptimizationHint> {
238        let mut hints = Vec::new();
239        match level {
240            OptimizationLevel::None => {}
241            OptimizationLevel::Basic => {
242                hints.push(OptimizationHint::MinimizeGateCount);
243            }
244            OptimizationLevel::Aggressive => {
245                hints.push(OptimizationHint::MinimizeDepth);
246                hints.push(OptimizationHint::MaximizeFidelity);
247            }
248            OptimizationLevel::Adaptive => {
249                if gate.qubits().len() > 2 {
250                    hints.push(OptimizationHint::MinimizeDepth);
251                } else {
252                    hints.push(OptimizationHint::MaximizeFidelity);
253                }
254            }
255        }
256        hints
257    }
258    /// Find hardware target by name
259    fn find_hardware_target(
260        &self,
261        target_name: &str,
262    ) -> Result<Arc<dyn HardwareTarget>, QuantRS2Error> {
263        self.hardware_targets
264            .iter()
265            .find(|target| target.target_name() == target_name)
266            .cloned()
267            .ok_or_else(|| QuantRS2Error::HardwareTargetNotFound(target_name.to_string()))
268    }
269    /// Perform the actual compilation
270    async fn perform_compilation(
271        &self,
272        gate: &dyn GateOp,
273        hardware: &Arc<dyn HardwareTarget>,
274        context: &CompilationContext,
275        optimization_level: &OptimizationLevel,
276        deadline: Option<Instant>,
277    ) -> Result<CompiledGate, QuantRS2Error> {
278        let start_time = Instant::now();
279        if let Some(deadline) = deadline {
280            if Instant::now() > deadline {
281                return Err(QuantRS2Error::CompilationTimeout(
282                    "Deadline exceeded before compilation".to_string(),
283                ));
284            }
285        }
286        let mut compiled_gate = hardware.compile_gate(gate, context)?;
287        match optimization_level {
288            OptimizationLevel::None => {}
289            OptimizationLevel::Basic => {
290                compiled_gate =
291                    self.apply_basic_optimizations(compiled_gate, hardware, deadline)?;
292            }
293            OptimizationLevel::Aggressive => {
294                compiled_gate = self
295                    .apply_aggressive_optimizations(compiled_gate, hardware, deadline)
296                    .await?;
297            }
298            OptimizationLevel::Adaptive => {
299                compiled_gate = self
300                    .apply_adaptive_optimizations(compiled_gate, hardware, context, deadline)
301                    .await?;
302            }
303        }
304        compiled_gate.compilation_time = start_time.elapsed();
305        compiled_gate.estimated_execution_time =
306            Self::estimate_execution_time(&compiled_gate, hardware);
307        Ok(compiled_gate)
308    }
309    /// Apply basic optimizations
310    fn apply_basic_optimizations(
311        &self,
312        mut compiled_gate: CompiledGate,
313        _hardware: &Arc<dyn HardwareTarget>,
314        deadline: Option<Instant>,
315    ) -> Result<CompiledGate, QuantRS2Error> {
316        compiled_gate.gate_sequence = self.fuse_adjacent_gates(&compiled_gate.gate_sequence)?;
317        compiled_gate.gate_sequence = self.remove_redundant_gates(&compiled_gate.gate_sequence)?;
318        if let Some(deadline) = deadline {
319            if Instant::now() > deadline {
320                return Err(QuantRS2Error::CompilationTimeout(
321                    "Deadline exceeded during basic optimization".to_string(),
322                ));
323            }
324        }
325        Ok(compiled_gate)
326    }
327    /// Apply aggressive optimizations
328    async fn apply_aggressive_optimizations(
329        &self,
330        mut compiled_gate: CompiledGate,
331        hardware: &Arc<dyn HardwareTarget>,
332        deadline: Option<Instant>,
333    ) -> Result<CompiledGate, QuantRS2Error> {
334        compiled_gate = self.apply_basic_optimizations(compiled_gate, hardware, deadline)?;
335        compiled_gate.gate_sequence = self.optimize_circuit_depth(&compiled_gate.gate_sequence)?;
336        compiled_gate.gate_sequence =
337            self.optimize_for_hardware_connectivity(&compiled_gate.gate_sequence, hardware)?;
338        compiled_gate = self.optimize_for_fidelity(compiled_gate, hardware)?;
339        if let Some(deadline) = deadline {
340            if Instant::now() > deadline {
341                return Err(QuantRS2Error::CompilationTimeout(
342                    "Deadline exceeded during aggressive optimization".to_string(),
343                ));
344            }
345        }
346        Ok(compiled_gate)
347    }
348    /// Apply adaptive optimizations based on context
349    async fn apply_adaptive_optimizations(
350        &self,
351        mut compiled_gate: CompiledGate,
352        hardware: &Arc<dyn HardwareTarget>,
353        context: &CompilationContext,
354        deadline: Option<Instant>,
355    ) -> Result<CompiledGate, QuantRS2Error> {
356        let current_metrics = self.performance_monitor.get_current_metrics();
357        if current_metrics.average_compilation_time > Duration::from_millis(100) {
358            compiled_gate = self.apply_basic_optimizations(compiled_gate, hardware, deadline)?;
359        } else if context
360            .optimization_hints
361            .contains(&OptimizationHint::MaximizeFidelity)
362        {
363            compiled_gate = self.optimize_for_fidelity(compiled_gate, hardware)?;
364        } else {
365            compiled_gate = self
366                .apply_aggressive_optimizations(compiled_gate, hardware, deadline)
367                .await?;
368        }
369        Ok(compiled_gate)
370    }
371    /// Fuse adjacent gates where possible
372    fn fuse_adjacent_gates(&self, gates: &[NativeGate]) -> Result<Vec<NativeGate>, QuantRS2Error> {
373        let mut fused_gates = Vec::new();
374        let mut i = 0;
375        while i < gates.len() {
376            let current_gate = &gates[i];
377            if i + 1 < gates.len() {
378                let next_gate = &gates[i + 1];
379                if Self::can_fuse_gates(current_gate, next_gate) {
380                    let fused_gate = Self::fuse_two_gates(current_gate, next_gate)?;
381                    fused_gates.push(fused_gate);
382                    i += 2;
383                    continue;
384                }
385            }
386            fused_gates.push(current_gate.clone());
387            i += 1;
388        }
389        Ok(fused_gates)
390    }
391    /// Check if two gates can be fused
392    fn can_fuse_gates(gate1: &NativeGate, gate2: &NativeGate) -> bool {
393        match (&gate1.gate_type, &gate2.gate_type) {
394            (NativeGateType::RZ(_), NativeGateType::RZ(_))
395            | (NativeGateType::RX(_), NativeGateType::RX(_))
396            | (NativeGateType::RY(_), NativeGateType::RY(_)) => {
397                gate1.target_qubits == gate2.target_qubits
398            }
399            _ => false,
400        }
401    }
402    /// Fuse two compatible gates
403    fn fuse_two_gates(gate1: &NativeGate, gate2: &NativeGate) -> Result<NativeGate, QuantRS2Error> {
404        match (&gate1.gate_type, &gate2.gate_type) {
405            (NativeGateType::RZ(angle1), NativeGateType::RZ(angle2)) => Ok(NativeGate {
406                gate_type: NativeGateType::RZ(angle1 + angle2),
407                target_qubits: gate1.target_qubits.clone(),
408                execution_time: gate1.execution_time + gate2.execution_time,
409                fidelity: gate1.fidelity * gate2.fidelity,
410            }),
411            (NativeGateType::RX(angle1), NativeGateType::RX(angle2)) => Ok(NativeGate {
412                gate_type: NativeGateType::RX(angle1 + angle2),
413                target_qubits: gate1.target_qubits.clone(),
414                execution_time: gate1.execution_time + gate2.execution_time,
415                fidelity: gate1.fidelity * gate2.fidelity,
416            }),
417            (NativeGateType::RY(angle1), NativeGateType::RY(angle2)) => Ok(NativeGate {
418                gate_type: NativeGateType::RY(angle1 + angle2),
419                target_qubits: gate1.target_qubits.clone(),
420                execution_time: gate1.execution_time + gate2.execution_time,
421                fidelity: gate1.fidelity * gate2.fidelity,
422            }),
423            _ => Err(QuantRS2Error::GateFusionError(
424                "Cannot fuse incompatible gates".to_string(),
425            )),
426        }
427    }
428    /// Remove redundant gates (identity operations)
429    fn remove_redundant_gates(
430        &self,
431        gates: &[NativeGate],
432    ) -> Result<Vec<NativeGate>, QuantRS2Error> {
433        let mut filtered_gates = Vec::new();
434        for gate in gates {
435            if !Self::is_redundant_gate(gate) {
436                filtered_gates.push(gate.clone());
437            }
438        }
439        Ok(filtered_gates)
440    }
441    /// Check if a gate is redundant (effectively identity)
442    fn is_redundant_gate(gate: &NativeGate) -> bool {
443        match &gate.gate_type {
444            NativeGateType::RX(angle) | NativeGateType::RY(angle) | NativeGateType::RZ(angle) => {
445                let normalized_angle = angle % (2.0 * std::f64::consts::PI);
446                normalized_angle.abs() < 1e-10
447                    || 2.0f64
448                        .mul_add(-std::f64::consts::PI, normalized_angle)
449                        .abs()
450                        < 1e-10
451            }
452            NativeGateType::Identity => true,
453            _ => false,
454        }
455    }
456    /// Optimize circuit depth by reordering gates
457    fn optimize_circuit_depth(
458        &self,
459        gates: &[NativeGate],
460    ) -> Result<Vec<NativeGate>, QuantRS2Error> {
461        let mut optimized_gates = gates.to_vec();
462        optimized_gates.sort_by(|a, b| {
463            if Self::gates_share_qubits(a, b) {
464                std::cmp::Ordering::Equal
465            } else {
466                std::cmp::Ordering::Equal
467            }
468        });
469        Ok(optimized_gates)
470    }
471    /// Check if two gates share any qubits
472    fn gates_share_qubits(gate1: &NativeGate, gate2: &NativeGate) -> bool {
473        gate1
474            .target_qubits
475            .iter()
476            .any(|&q1| gate2.target_qubits.contains(&q1))
477    }
478    /// Optimize for hardware connectivity
479    fn optimize_for_hardware_connectivity(
480        &self,
481        gates: &[NativeGate],
482        hardware: &Arc<dyn HardwareTarget>,
483    ) -> Result<Vec<NativeGate>, QuantRS2Error> {
484        let connectivity = hardware.qubit_connectivity();
485        let mut optimized_gates = Vec::new();
486        for gate in gates {
487            if gate.target_qubits.len() == 2 {
488                let qubit1 = gate.target_qubits[0];
489                let qubit2 = gate.target_qubits[1];
490                if !connectivity.contains(&(qubit1, qubit2))
491                    && !connectivity.contains(&(qubit2, qubit1))
492                {
493                    let swap_sequence = Self::find_swap_sequence(qubit1, qubit2, &connectivity)?;
494                    optimized_gates.extend(swap_sequence);
495                }
496            }
497            optimized_gates.push(gate.clone());
498        }
499        Ok(optimized_gates)
500    }
501    /// Find SWAP sequence to connect two qubits
502    fn find_swap_sequence(
503        qubit1: usize,
504        qubit2: usize,
505        connectivity: &[(usize, usize)],
506    ) -> Result<Vec<NativeGate>, QuantRS2Error> {
507        let mut swaps = Vec::new();
508        if !connectivity.contains(&(qubit1, qubit2)) {
509            swaps.push(NativeGate {
510                gate_type: NativeGateType::SWAP,
511                target_qubits: vec![qubit1, qubit2],
512                execution_time: Duration::from_micros(1000),
513                fidelity: 0.99,
514            });
515        }
516        Ok(swaps)
517    }
518    /// Optimize for maximum fidelity
519    fn optimize_for_fidelity(
520        &self,
521        mut compiled_gate: CompiledGate,
522        hardware: &Arc<dyn HardwareTarget>,
523    ) -> Result<CompiledGate, QuantRS2Error> {
524        let gate_fidelities = hardware.gate_fidelities();
525        for gate in &mut compiled_gate.gate_sequence {
526            if let Some(&current_fidelity) = gate_fidelities.get(&format!("{:?}", gate.gate_type)) {
527                if current_fidelity < 0.95 {
528                    if let Some(alternative) =
529                        Self::find_high_fidelity_alternative(gate, &gate_fidelities)
530                    {
531                        *gate = alternative;
532                    }
533                }
534            }
535        }
536        compiled_gate.estimated_fidelity = compiled_gate
537            .gate_sequence
538            .iter()
539            .map(|gate| gate.fidelity)
540            .product();
541        Ok(compiled_gate)
542    }
543    /// Find high-fidelity alternative for a gate
544    const fn find_high_fidelity_alternative(
545        _gate: &NativeGate,
546        _gate_fidelities: &HashMap<String, f64>,
547    ) -> Option<NativeGate> {
548        None
549    }
550    /// Estimate execution time for compiled gate
551    fn estimate_execution_time(
552        compiled_gate: &CompiledGate,
553        hardware: &Arc<dyn HardwareTarget>,
554    ) -> Duration {
555        let gate_times = hardware.gate_times();
556        compiled_gate
557            .gate_sequence
558            .iter()
559            .map(|gate| {
560                gate_times
561                    .get(&format!("{:?}", gate.gate_type))
562                    .copied()
563                    .unwrap_or(gate.execution_time)
564            })
565            .sum()
566    }
567}
568/// Compilation cache for storing compiled gates
569#[derive(Debug)]
570pub struct CompilationCache {
571    cache: HashMap<String, CompiledGate>,
572    access_order: Vec<String>,
573    max_size: usize,
574}
575impl CompilationCache {
576    pub fn new(max_size: usize) -> Self {
577        Self {
578            cache: HashMap::new(),
579            access_order: Vec::new(),
580            max_size,
581        }
582    }
583    pub fn get(&self, key: &str) -> Option<&CompiledGate> {
584        self.cache.get(key)
585    }
586    pub fn insert(&mut self, key: String, value: CompiledGate) {
587        if self.cache.contains_key(&key) {
588            self.access_order.retain(|k| k != &key);
589        }
590        self.cache.insert(key.clone(), value);
591        self.access_order.push(key);
592        while self.cache.len() > self.max_size {
593            if let Some(oldest_key) = self.access_order.first().cloned() {
594                self.cache.remove(&oldest_key);
595                self.access_order.remove(0);
596            }
597        }
598    }
599}
600/// Optimization pipeline for quantum circuits
601#[derive(Debug)]
602pub struct OptimizationPipeline {
603    passes: Vec<Box<dyn OptimizationPass>>,
604}
605pub trait OptimizationPass: Send + Sync + std::fmt::Debug {
606    fn pass_name(&self) -> &str;
607    fn apply(&self, gates: &[NativeGate]) -> Result<Vec<NativeGate>, QuantRS2Error>;
608    fn cost_estimate(&self, gates: &[NativeGate]) -> Duration;
609}
610impl OptimizationPipeline {
611    pub fn new() -> Self {
612        Self { passes: Vec::new() }
613    }
614    pub fn add_pass(&mut self, pass: Box<dyn OptimizationPass>) {
615        self.passes.push(pass);
616    }
617    pub fn run(
618        &self,
619        gates: &[NativeGate],
620        deadline: Option<Instant>,
621    ) -> Result<Vec<NativeGate>, QuantRS2Error> {
622        let mut current_gates = gates.to_vec();
623        for pass in &self.passes {
624            if let Some(deadline) = deadline {
625                let estimated_cost = pass.cost_estimate(&current_gates);
626                if Instant::now() + estimated_cost > deadline {
627                    break;
628                }
629            }
630            current_gates = pass.apply(&current_gates)?;
631        }
632        Ok(current_gates)
633    }
634}
635/// Performance monitoring for compilation
636#[derive(Debug)]
637pub struct PerformanceMonitor {
638    metrics: Arc<Mutex<CompilationMetrics>>,
639}
640#[derive(Debug, Clone)]
641pub struct CompilationMetrics {
642    pub total_compilations: u64,
643    pub successful_compilations: u64,
644    pub cache_hits: u64,
645    pub average_compilation_time: Duration,
646    pub average_fidelity: f64,
647    pub average_gate_count: f64,
648}
649impl PerformanceMonitor {
650    pub fn new() -> Self {
651        Self {
652            metrics: Arc::new(Mutex::new(CompilationMetrics {
653                total_compilations: 0,
654                successful_compilations: 0,
655                cache_hits: 0,
656                average_compilation_time: Duration::ZERO,
657                average_fidelity: 0.0,
658                average_gate_count: 0.0,
659            })),
660        }
661    }
662    pub fn record_compilation_success(
663        &self,
664        compilation_time: Duration,
665        fidelity: f64,
666        gate_count: usize,
667    ) {
668        let mut metrics = self.metrics.lock().expect("metrics mutex poisoned");
669        metrics.total_compilations += 1;
670        metrics.successful_compilations += 1;
671        let n = metrics.successful_compilations as f64;
672        metrics.average_compilation_time = Duration::from_nanos(
673            ((metrics.average_compilation_time.as_nanos() as f64)
674                .mul_add(n - 1.0, compilation_time.as_nanos() as f64)
675                / n) as u64,
676        );
677        metrics.average_fidelity = metrics.average_fidelity.mul_add(n - 1.0, fidelity) / n;
678        metrics.average_gate_count = metrics
679            .average_gate_count
680            .mul_add(n - 1.0, gate_count as f64)
681            / n;
682    }
683    pub fn record_compilation_failure(&self, _compilation_time: Duration) {
684        let mut metrics = self.metrics.lock().expect("metrics mutex poisoned");
685        metrics.total_compilations += 1;
686    }
687    pub fn record_cache_hit(&self, _access_time: Duration) {
688        let mut metrics = self.metrics.lock().expect("metrics mutex poisoned");
689        metrics.cache_hits += 1;
690    }
691    pub fn get_current_metrics(&self) -> CompilationMetrics {
692        self.metrics.lock().expect("metrics mutex poisoned").clone()
693    }
694}
695/// Compiled gate representation
696#[derive(Debug, Clone)]
697pub struct CompiledGate {
698    pub original_gate_name: String,
699    pub target_hardware: String,
700    pub gate_sequence: Vec<NativeGate>,
701    pub estimated_fidelity: f64,
702    pub compilation_time: Duration,
703    pub estimated_execution_time: Duration,
704    pub optimization_level: OptimizationLevel,
705}
706/// Native gate for specific hardware
707#[derive(Debug, Clone)]
708pub struct NativeGate {
709    pub gate_type: NativeGateType,
710    pub target_qubits: Vec<usize>,
711    pub execution_time: Duration,
712    pub fidelity: f64,
713}
714#[derive(Debug, Clone)]
715pub enum NativeGateType {
716    RX(f64),
717    RY(f64),
718    RZ(f64),
719    CNOT,
720    CZ,
721    SWAP,
722    Identity,
723    Custom {
724        name: String,
725        matrix: Array2<Complex64>,
726    },
727}
728/// Example superconducting hardware target
729#[derive(Debug)]
730pub struct SuperconductingTarget {
731    pub name: String,
732    pub qubit_count: usize,
733    pub connectivity: Vec<(usize, usize)>,
734}
735impl SuperconductingTarget {
736    pub fn new(name: String, qubit_count: usize) -> Self {
737        let connectivity = (0..qubit_count.saturating_sub(1))
738            .map(|i| (i, i + 1))
739            .collect();
740        Self {
741            name,
742            qubit_count,
743            connectivity,
744        }
745    }
746}
747impl HardwareTarget for SuperconductingTarget {
748    fn target_name(&self) -> &str {
749        &self.name
750    }
751    fn native_gates(&self) -> Vec<String> {
752        vec![
753            "RX".to_string(),
754            "RY".to_string(),
755            "RZ".to_string(),
756            "CNOT".to_string(),
757        ]
758    }
759    fn qubit_connectivity(&self) -> Vec<(usize, usize)> {
760        self.connectivity.clone()
761    }
762    fn gate_fidelities(&self) -> HashMap<String, f64> {
763        let mut fidelities = HashMap::new();
764        fidelities.insert("RX".to_string(), 0.999);
765        fidelities.insert("RY".to_string(), 0.999);
766        fidelities.insert("RZ".to_string(), 0.9995);
767        fidelities.insert("CNOT".to_string(), 0.995);
768        fidelities
769    }
770    fn gate_times(&self) -> HashMap<String, Duration> {
771        let mut times = HashMap::new();
772        times.insert("RX".to_string(), Duration::from_nanos(20));
773        times.insert("RY".to_string(), Duration::from_nanos(20));
774        times.insert("RZ".to_string(), Duration::from_nanos(0));
775        times.insert("CNOT".to_string(), Duration::from_nanos(100));
776        times
777    }
778    fn coherence_times(&self) -> Vec<Duration> {
779        vec![Duration::from_millis(100); self.qubit_count]
780    }
781    fn compile_gate(
782        &self,
783        gate: &dyn GateOp,
784        _context: &CompilationContext,
785    ) -> Result<CompiledGate, QuantRS2Error> {
786        let mut native_gates = Vec::new();
787        match gate.name() {
788            "X" => {
789                native_gates.push(NativeGate {
790                    gate_type: NativeGateType::RX(std::f64::consts::PI),
791                    target_qubits: vec![0],
792                    execution_time: Duration::from_nanos(20),
793                    fidelity: 0.999,
794                });
795            }
796            "Y" => {
797                native_gates.push(NativeGate {
798                    gate_type: NativeGateType::RY(std::f64::consts::PI),
799                    target_qubits: vec![0],
800                    execution_time: Duration::from_nanos(20),
801                    fidelity: 0.999,
802                });
803            }
804            "Z" => {
805                native_gates.push(NativeGate {
806                    gate_type: NativeGateType::RZ(std::f64::consts::PI),
807                    target_qubits: vec![0],
808                    execution_time: Duration::from_nanos(0),
809                    fidelity: 0.9995,
810                });
811            }
812            "CNOT" => {
813                native_gates.push(NativeGate {
814                    gate_type: NativeGateType::CNOT,
815                    target_qubits: vec![0, 1],
816                    execution_time: Duration::from_nanos(100),
817                    fidelity: 0.995,
818                });
819            }
820            _ => {
821                return Err(QuantRS2Error::UnsupportedGate(format!(
822                    "Gate {} not supported",
823                    gate.name()
824                )));
825            }
826        }
827        let estimated_fidelity = native_gates.iter().map(|g| g.fidelity).product();
828        Ok(CompiledGate {
829            original_gate_name: gate.name().to_string(),
830            target_hardware: self.name.clone(),
831            gate_sequence: native_gates,
832            estimated_fidelity,
833            compilation_time: Duration::ZERO,
834            estimated_execution_time: Duration::ZERO,
835            optimization_level: OptimizationLevel::Basic,
836        })
837    }
838    fn optimize_circuit(
839        &self,
840        circuit: &[CompiledGate],
841    ) -> Result<Vec<CompiledGate>, QuantRS2Error> {
842        Ok(circuit.to_vec())
843    }
844}
845#[cfg(test)]
846mod tests {
847    use super::*;
848    #[tokio::test]
849    async fn test_real_time_compiler_creation() {
850        let compiler = RealTimeQuantumCompiler::new();
851        assert_eq!(compiler.hardware_targets.len(), 0);
852    }
853    #[tokio::test]
854    async fn test_superconducting_target() {
855        let target = SuperconductingTarget::new("test_sc".to_string(), 5);
856        assert_eq!(target.target_name(), "test_sc");
857        assert_eq!(target.qubit_connectivity().len(), 4);
858        assert!(target.gate_fidelities().contains_key("RX"));
859    }
860    #[tokio::test]
861    async fn test_compilation_cache() {
862        let mut cache = CompilationCache::new(2);
863        let compiled_gate = CompiledGate {
864            original_gate_name: "X".to_string(),
865            target_hardware: "test".to_string(),
866            gate_sequence: Vec::new(),
867            estimated_fidelity: 0.99,
868            compilation_time: Duration::from_millis(1),
869            estimated_execution_time: Duration::from_nanos(20),
870            optimization_level: OptimizationLevel::Basic,
871        };
872        cache.insert("key1".to_string(), compiled_gate.clone());
873        assert!(cache.get("key1").is_some());
874        cache.insert("key2".to_string(), compiled_gate.clone());
875        cache.insert("key3".to_string(), compiled_gate);
876        assert!(cache.get("key1").is_none());
877        assert!(cache.get("key2").is_some());
878        assert!(cache.get("key3").is_some());
879    }
880    #[tokio::test]
881    async fn test_performance_monitor() {
882        let monitor = PerformanceMonitor::new();
883        monitor.record_compilation_success(Duration::from_millis(10), 0.99, 5);
884        let metrics = monitor.get_current_metrics();
885        assert_eq!(metrics.successful_compilations, 1);
886        assert_eq!(metrics.average_fidelity, 0.99);
887    }
888}
quantrs2_core/real_time_compilation.rs

quantrs2_core/
real_time_compilation.rs
