Added Ci/GitHub actions

.github/workflows/repro.yml

@@ -0,0 +1,41 @@
+name: Repro
+
+# Runs on every push and every PR.
+# The job passes (green) when BOTH conditions hold:
+#   [1] Issue confirmed   — TraceEvent 3.1.30 still has no typed schema for
+#                           AllocationSampled (EventID 303): PayloadNames is null,
+#                           source.Clr.All fires 0 times for EventID 303.
+#   [2] Workaround confirmed — raw EventData() byte parsing decodes all events.
+#
+# Exit codes from Program.cs:
+#   0  normal / expected state (both conditions above hold)
+#   1  wrong runtime (< .NET 10)
+#   2  zero events captured (allocation volume too low or wrong runtime)
+#   3  UNEXPECTED: TraceEvent now provides PayloadNames → issue may be fixed
+#   4  FAIL: workaround broken (TryParseAllocationSampled returned false for all events)
+
+on:
+  push:
+  pull_request:
+
+env:
+  FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true
+
+jobs:
+  confirm:
+    name: Confirm issue + workaround (.NET 10)
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Set up .NET 10
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '10.0.x'
+
+      - name: Restore
+        run: dotnet restore
+
+      - name: Run repro
+        run: dotnet run --no-restore

Program.cs

@@ -5,7 +5,8 @@
 //
 // What this shows:
 //   1. Generate a live .nettrace with AllocationSamplingKeyword on .NET 10.
-//   2. Parse via the native TraceEvent API  → PayloadNames is null, PayloadByName returns null.
+//   2. Parse via the native TraceEvent API  → PayloadNames is an empty array, PayloadByName
+//      returns null, PayloadValue(0) returns a sentinel error string.
 //   3. Parse via raw EventData() bytes      → TypeName and ObjectSize decoded successfully.
 
 using System.Diagnostics.Tracing;
@@ -58,8 +59,9 @@
 // ── Step 2: Parse via native TraceEvent API (broken) ───────────────────────
 
 Console.WriteLine("══ Native TraceEvent API (broken) ═════════════════════════════════════");
-int nativeSeen  = 0;
-int clrTypedSeen = 0;
+int  nativeSeen        = 0;
+int  clrTypedSeen      = 0;
+bool nativeSchemaAbsent = true; // flipped to false if TraceEvent provides PayloadNames
 
 using (var source = new EventPipeEventSource(traceFile))
 {
@@ -76,6 +78,7 @@
         if (nativeSeen++ > 0) return; // Print only the first event for brevity
 
         var names = data.PayloadNames;
+        nativeSchemaAbsent = names is null || names.Length == 0;
         Console.WriteLine($"  PayloadNames:                {FormatNames(names)}");
         Console.WriteLine($"  PayloadByName(\"TypeName\"):   {data.PayloadByName("TypeName") ?? "<null>"}");
         Console.WriteLine($"  PayloadByName(\"ObjectSize\"): {data.PayloadByName("ObjectSize") ?? "<null>"}");
@@ -121,15 +124,42 @@
     source.Process();
 }
 
-Console.WriteLine($"  Total events decoded via raw bytes: {rawDecoded} / {nativeSeen}");
+int pct = nativeSeen > 0 ? rawDecoded * 100 / nativeSeen : 0;
+Console.WriteLine($"  Total events decoded via raw bytes: {pct}% ({rawDecoded} / {nativeSeen})");
 
 Console.WriteLine();
-if (rawDecoded > 0)
-    Console.WriteLine("RESULT: native API yields no payload data; raw byte parsing works.\n" +
-                      "        ClrTraceEventParser needs a typed schema for EventID 303.");
-else
-    Console.WriteLine("RESULT: raw byte parser also failed — allocation volume may need to increase.");
 
+// ── CI assertions ─────────────────────────────────────────────────────────────
+// Exit 0  = issue confirmed (PayloadNames null, Clr.All 0 hits)
+//         + workaround confirmed (raw bytes decoded events)    ← expected/normal
+// Exit 3  = issue NOT confirmed — TraceEvent may now have a typed schema
+// Exit 4  = workaround FAILED — raw byte parsing decoded 0 events
+bool issueConfirmed      = nativeSchemaAbsent && clrTypedSeen == 0;
+bool workaroundConfirmed = rawDecoded > 0;
+
+if (!issueConfirmed)
+{
+    Console.Error.WriteLine(
+        "CI: UNEXPECTED — TraceEvent appears to provide PayloadNames for AllocationSampled " +
+        "(EventID 303). If ClrTraceEventParser gained a typed schema, migrate to native " +
+        "PayloadByName/PayloadValue and close this issue.");
+    File.Delete(traceFile);
+    return 3;
+}
+
+if (!workaroundConfirmed)
+{
+    Console.Error.WriteLine(
+        "CI: FAIL — raw byte workaround decoded 0 events. " +
+        "Payload layout may have changed; check TryParseAllocationSampled.");
+    File.Delete(traceFile);
+    return 4;
+}
+
+Console.WriteLine(
+    "CI: PASS\n" +
+    "  [1] Issue confirmed   — PayloadNames empty, Clr.All: 0 hits for EventID 303\n" +
+    $"  [2] Workaround confirmed — raw bytes decoded {pct}% of sampled events");
 File.Delete(traceFile);
 return 0;
 

README.md

@@ -1,7 +1,6 @@
 # AllocationSampledRepro
 
-Minimal self-contained repro for the missing `AllocationSampled` (EventID 303) typed schema in
-`Microsoft.Diagnostics.Tracing.TraceEvent` 3.1.30.
+Minimal self-contained repro for [microsoft/perfview#2385](https://github.com/microsoft/perfview/issues/2385) — missing `AllocationSampled` (EventID 303) typed schema in `Microsoft.Diagnostics.Tracing.TraceEvent` 3.1.30.
 
 ## Requirements
 
@@ -37,24 +36,25 @@ The program runs in three phases:
 
 ```
 ══ Native TraceEvent API (broken) ═════════════════════════════════════
-  PayloadNames:                <null>
+  PayloadNames:                <empty array>
   PayloadByName("TypeName"):   <null>
   PayloadByName("ObjectSize"): <null>
-  PayloadValue(0):             <null>
+  PayloadValue(0):             <<<EXCEPTION_DURING_VALUE_LOOKUP IndexOutOfRangeException>>>
   source.Clr.All hits for EventID 303:     0  (0 = not routed through ClrTraceEventParser)
-  source.Dynamic.All hits for EventID 303: 47
+  source.Dynamic.All hits for EventID 303: 78
 
 ══ Raw EventData() workaround (works) ══════════════════════════════════
-  [1] TypeName=System.String   ObjectSize=96 bytes
-  [2] TypeName=System.String   ObjectSize=96 bytes
-  [3] TypeName=System.Byte[]   ObjectSize=512 bytes
+  [1] TypeName=System.Reflection.RuntimeMethodInfo  ObjectSize=104 bytes
   ...
-  Total events decoded via raw bytes: 47 / 47
+  Total events decoded via raw bytes: 100% (N / N)
 
-RESULT: native API yields no payload data; raw byte parsing works.
-        ClrTraceEventParser needs a typed schema for EventID 303.
+CI: PASS
+  [1] Issue confirmed   — PayloadNames empty, Clr.All: 0 hits for EventID 303
+  [2] Workaround confirmed — raw bytes decoded 100% of sampled events
 ```
 
+(Event count and types vary per run; the CI workflow verifies both assertions on every push.)
+
 ## Binary payload layout
 
 Decoded from the dotnet/runtime reference consumer