feat: 添加基准测试基础设施

crates/oxide_cli/src/bench/output.rs

@@ -0,0 +1,40 @@
+use crate::bench::metrics::MetricCollection;
+
+pub fn format_json(results: &[MetricCollection]) -> String {
+    serde_json::to_string_pretty(results).unwrap_or_else(|e| format!("{{\"error\": \"{}\"}}", e))
+}
+
+pub fn format_text_table(results: &[MetricCollection]) -> String {
+    let mut out = String::new();
+    out.push_str(&format!(
+        "{:<35} {:>10} {:>10} {:>10} {:>12} {:>8} {:>8} {:>10} {:>10}\n",
+        "Test Name", "Wall(ms)", "Comp(ms)", "Exec(ms)", "Instrs", "GC Ct", "IC Rate", "Sess Objs", "Sess B",
+    ));
+    out.push_str(&"-".repeat(120));
+    out.push('\n');
+
+    for m in results {
+        out.push_str(&format!(
+            "{:<35} {:>10.2} {:>10.3} {:>10.3} {:>12} {:>8} {:>7.1}% {:>10} {:>10}",
+            truncate(&m.test_name, 35),
+            m.wall_time_us as f64 / 1000.0,
+            m.compile_time_us as f64 / 1000.0,
+            m.exec_time_us as f64 / 1000.0,
+            m.instruction_count,
+            m.gc_trigger_count,
+            m.ic_hit_rate * 100.0,
+            m.session_objects,
+            m.session_bytes,
+        ));
+        out.push('\n');
+    }
+    out
+}
+
+fn truncate(s: &str, max: usize) -> &str {
+    if s.len() <= max {
+        s
+    } else {
+        &s[..max]
+    }
+}