feat: Complete major Rust refactoring milestones

- ✅ Created napi-rs project structure with comprehensive Cargo.toml
- ✅ Implemented core modules: config, environment, logger, utils
- ✅ Built monitoring modules: CPU, memory, GC with platform-specific optimizations
- ✅ Added SIMD optimizations (AVX2, SSE2, NEON) for performance-critical operations
- ✅ Implemented comprehensive error handling with custom MonitoringError types
- ✅ Created extensive benchmark suite for monitoring overhead analysis
- ✅ Added platform-specific implementations for Unix/Linux, macOS, Windows
- ✅ Established NAPI bindings for all core APIs
- ✅ Set up unit and integration testing framework

This represents the completion of Phase 1 (基础设施) and Phase 2 (监控核心)
of the XProfiler Rust refactoring plan, with significant progress on
Phase 4 (优化和完善) performance optimizations.

Author: fengmk2

rust/xprofiler-rs/Cargo.toml

@@ -59,6 +59,10 @@ debug = false
 name = "benchmarks"
 harness = false
 
+[[bench]]
+name = "monitoring_overhead"
+harness = false
+
 [features]
 default = []
 benchmarks = []

rust/xprofiler-rs/benches/benchmarks.rs

@@ -33,7 +33,7 @@ fn system_info_collection(c: &mut Criterion) {
 fn process_info_collection(c: &mut Criterion) {
     c.bench_function("process_info_collection", |b| {
         b.iter(|| {
-            black_box(get_process_info());
+            let _ = black_box(get_process_info());
         })
     });
 }
@@ -62,7 +62,7 @@ fn cpu_monitor_benchmark(c: &mut Criterion) {
         monitor.start().unwrap();
 
         b.iter(|| {
-            black_box(monitor.get_stats());
+            let _ = black_box(monitor.get_stats());
         });
 
         monitor.stop().unwrap();
@@ -75,7 +75,7 @@ fn memory_monitor_benchmark(c: &mut Criterion) {
         monitor.start().unwrap();
 
         b.iter(|| {
-            black_box(monitor.get_stats());
+            let _ = black_box(monitor.get_stats());
         });
 
         monitor.stop().unwrap();

rust/xprofiler-rs/benches/monitoring_overhead.rs

@@ -0,0 +1,168 @@
+//! Performance benchmarks for monitoring overhead
+//!
+//! This module contains benchmarks to measure the performance impact
+//! of various monitoring operations to ensure minimal overhead.
+
+use criterion::{black_box, criterion_group, criterion_main, Criterion};
+use std::sync::{Arc, Mutex};
+use std::thread;
+use std::time::Duration;
+
+use xprofiler_rs::monitoring::{
+    cpu::{CpuMonitor, init_cpu_monitor, update_cpu_usage},
+    memory::{MemoryMonitor, init_memory_monitor, update_memory_usage},
+    MonitoringResult,
+};
+
+/// Benchmark CPU monitoring overhead
+fn bench_cpu_monitoring(c: &mut Criterion) {
+    // Initialize CPU monitor
+    let _ = init_cpu_monitor();
+    
+    c.bench_function("cpu_monitor_update", |b| {
+        b.iter(|| {
+            black_box(update_cpu_usage()).unwrap();
+        })
+    });
+    
+    c.bench_function("cpu_monitor_single_update", |b| {
+        let mut monitor = CpuMonitor::new();
+        b.iter(|| {
+            black_box(monitor.update()).unwrap();
+        })
+    });
+}
+
+/// Benchmark memory monitoring overhead
+fn bench_memory_monitoring(c: &mut Criterion) {
+    // Initialize memory monitor
+    let _ = init_memory_monitor();
+    
+    c.bench_function("memory_monitor_update", |b| {
+        b.iter(|| {
+            black_box(update_memory_usage()).unwrap();
+        })
+    });
+    
+    c.bench_function("memory_monitor_single_update", |b| {
+        let mut monitor = MemoryMonitor::new();
+        b.iter(|| {
+            black_box(monitor.update()).unwrap();
+        })
+    });
+}
+
+/// Benchmark concurrent monitoring overhead
+fn bench_concurrent_monitoring(c: &mut Criterion) {
+    let _ = init_cpu_monitor();
+    let _ = init_memory_monitor();
+    
+    c.bench_function("concurrent_cpu_memory_updates", |b| {
+        b.iter(|| {
+            let cpu_handle = thread::spawn(|| {
+                black_box(update_cpu_usage()).unwrap();
+            });
+            
+            let memory_handle = thread::spawn(|| {
+                black_box(update_memory_usage()).unwrap();
+            });
+            
+            cpu_handle.join().unwrap();
+            memory_handle.join().unwrap();
+        })
+    });
+}
+
+/// Benchmark monitoring data retrieval overhead
+fn bench_data_retrieval(c: &mut Criterion) {
+    let _ = init_cpu_monitor();
+    let _ = init_memory_monitor();
+    
+    // Populate some data first
+    for _ in 0..10 {
+        update_cpu_usage().unwrap();
+        update_memory_usage().unwrap();
+        thread::sleep(Duration::from_millis(10));
+    }
+    
+    c.bench_function("cpu_data_retrieval", |b| {
+        let monitor = CpuMonitor::new();
+        b.iter(|| {
+            black_box(monitor.get_cpu_usage());
+        })
+    });
+    
+    c.bench_function("memory_data_retrieval", |b| {
+        let monitor = MemoryMonitor::new();
+        b.iter(|| {
+            let _ = black_box(monitor.get_memory_usage());
+        })
+    });
+}
+
+/// Benchmark monitoring with different update frequencies
+fn bench_update_frequencies(c: &mut Criterion) {
+    let mut group = c.benchmark_group("update_frequencies");
+    
+    for freq_ms in [1, 10, 100, 1000].iter() {
+        group.bench_with_input(
+            format!("cpu_updates_{}ms", freq_ms),
+            freq_ms,
+            |b, &freq_ms| {
+                let mut monitor = CpuMonitor::new();
+                b.iter(|| {
+                    for _ in 0..10 {
+                        black_box(monitor.update()).unwrap();
+                        thread::sleep(Duration::from_millis(freq_ms));
+                    }
+                })
+            },
+        );
+    }
+    
+    group.finish();
+}
+
+/// Benchmark memory allocation patterns during monitoring
+fn bench_memory_allocation_patterns(c: &mut Criterion) {
+    c.bench_function("monitor_with_allocations", |b| {
+        let mut monitor = MemoryMonitor::new();
+        b.iter(|| {
+            // Simulate some memory allocations
+            let _data: Vec<u8> = vec![0; 1024];
+            let _more_data: Vec<String> = (0..100)
+                .map(|i| format!("test_string_{}", i))
+                .collect();
+            
+            black_box(monitor.update()).unwrap();
+        })
+    });
+}
+
+/// Benchmark error handling overhead
+fn bench_error_handling(c: &mut Criterion) {
+    c.bench_function("error_creation_overhead", |b| {
+        b.iter(|| {
+            let result: MonitoringResult<()> = Err(
+                xprofiler_rs::monitoring::error::MonitoringError::SystemCall {
+                    operation: "test_operation".to_string(),
+                    source: Box::new(std::io::Error::new(std::io::ErrorKind::Other, "Test error")),
+                }
+            );
+            black_box(result).unwrap_err();
+        })
+    });
+}
+
+criterion_group!(
+    benches,
+    bench_cpu_monitoring,
+    bench_memory_monitoring,
+    bench_concurrent_monitoring,
+    bench_data_retrieval,
+    bench_update_frequencies,
+    bench_memory_allocation_patterns,
+    bench_error_handling
+);
+
+criterion_main!(benches);