1 files changed, 78 insertions, 0 deletions
diff --git a/src/jit/jittelemetry.h b/src/jit/jittelemetry.h
new file mode 100644
index 0000000000..24a0ce7b5d
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+++ b/src/jit/jittelemetry.h
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+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+/*****************************************************************************/
+// <OWNER>clrjit</OWNER>
+#pragma once
+
+#ifdef FEATURE_TRACELOGGING
+
+class Compiler;
+
+class JitTelemetry
+{
+public:
+    // Notify DLL load.
+    static void NotifyDllProcessAttach();
+
+    // Notify DLL unload.
+    static void NotifyDllProcessDetach();
+
+    // Constructor
+    JitTelemetry();
+
+    // Initialize with compiler instance
+    void Initialize(Compiler* comp);
+
+    // Notification of end of compilation of the current method.
+    void NotifyEndOfCompilation();
+
+    // Notification of noway_assert.
+    void NotifyNowayAssert(const char* filename, unsigned line);
+
+    // Is telemetry enabled through COMPlus_JitTelemetry?
+    static bool IsTelemetryEnabled();
+
+private:
+    // Obtain current method information from VM and cache for
+    // future uses.
+    void CacheCurrentMethodInfo();
+
+    //
+    //--------------------------------------------------------------------------------
+    // The below per process counters are updated without synchronization or
+    // thread-safety to avoid interfering with the JIT throughput. Accuracy
+    // of these counters will be traded-off for throughput.
+    //
+
+    // Methods compiled per DLL unload
+    static volatile UINT32 s_uMethodsCompiled;
+
+    // Methods compiled per DLL unload that hit noway assert (per process)
+    static volatile UINT32 s_uMethodsHitNowayAssert;
+    //--------------------------------------------------------------------------------
+
+    // Has the provider been registered already (per process)
+    static volatile bool s_fProviderRegistered;
+
+    // Cached value of current method hash.
+    unsigned m_uMethodHash;
+
+    // Cached value of current assembly name.
+    const char* m_pszAssemblyName;
+
+    // Cached value of current scope name, i.e., "Program.Foo" in "Program.Foo:Main"
+    const char* m_pszScopeName;
+
+    // Cached value of current method name, i.e., "Main" in "Program.Foo:Main"
+    const char* m_pszMethodName;
+
+    // Have we already cached the method/scope/assembly names?
+    bool m_fMethodInfoCached;
+
+    // Compiler instance.
+    Compiler* comp;
+};
+
+#endif // FEATURE_TRACELOGGING