Fix flamegraph

Author: pablogsal

Lib/profiling/sampling/flamegraph.js

@@ -151,17 +151,22 @@ function createPythonTooltip(data) {
     const funcname = resolveString(d.data.funcname) || resolveString(d.data.name);
     const filename = resolveString(d.data.filename) || "";
 
+    // Don't show file location for special frames like <GC> and <native>
+    const isSpecialFrame = filename === "~";
+    const fileLocationHTML = isSpecialFrame ? "" : `
+        <div style="color: #5a6c7d; font-size: 13px; margin-bottom: 12px;
+                    font-family: monospace; background: #f8f9fa;
+                    padding: 4px 8px; border-radius: 4px; word-break: break-all; overflow-wrap: break-word;">
+          ${filename}${d.data.lineno ? ":" + d.data.lineno : ""}
+        </div>`;
+
     const tooltipHTML = `
       <div>
         <div style="color: #3776ab; font-weight: 600; font-size: 16px;
                     margin-bottom: 8px; line-height: 1.3; word-break: break-word; overflow-wrap: break-word;">
           ${funcname}
         </div>
-        <div style="color: #5a6c7d; font-size: 13px; margin-bottom: 12px;
-                    font-family: monospace; background: #f8f9fa;
-                    padding: 4px 8px; border-radius: 4px; word-break: break-all; overflow-wrap: break-word;">
-          ${filename}${d.data.lineno ? ":" + d.data.lineno : ""}
-        </div>
+        ${fileLocationHTML}
         <div style="display: grid; grid-template-columns: auto 1fr;
                     gap: 8px 16px; font-size: 14px;">
           <span style="color: #5a6c7d; font-weight: 500;">Execution Time:</span>
@@ -474,14 +479,23 @@ function populateStats(data) {
     if (i < hotSpots.length && hotSpots[i]) {
       const hotspot = hotSpots[i];
       const filename = hotspot.filename || 'unknown';
-      const basename = filename !== 'unknown' ? filename.split('/').pop() : 'unknown';
       const lineno = hotspot.lineno ?? '?';
       let funcDisplay = hotspot.funcname || 'unknown';
       if (funcDisplay.length > 35) {
         funcDisplay = funcDisplay.substring(0, 32) + '...';
       }
 
-      document.getElementById(`hotspot-file-${num}`).textContent = `${basename}:${lineno}`;
+      // Don't show file:line for special frames like <GC> and <native>
+      const isSpecialFrame = filename === '~' && (lineno === 0 || lineno === '?');
+      let fileDisplay;
+      if (isSpecialFrame) {
+        fileDisplay = '--';
+      } else {
+        const basename = filename !== 'unknown' ? filename.split('/').pop() : 'unknown';
+        fileDisplay = `${basename}:${lineno}`;
+      }
+
+      document.getElementById(`hotspot-file-${num}`).textContent = fileDisplay;
       document.getElementById(`hotspot-func-${num}`).textContent = funcDisplay;
       document.getElementById(`hotspot-detail-${num}`).textContent = `${hotspot.directPercent.toFixed(1)}% samples (${hotspot.directSamples.toLocaleString()})`;
     } else {