Adds support for resolving JIT compiled managed call frames in perf_events.

1 files changed, 49 insertions, 0 deletions

diff --git a/src/vm/perfmap.h b/src/vm/perfmap.h
new file mode 100644
index 0000000000..e0539150fc
--- /dev/null
+++ b/src/vm/perfmap.h
@@ -0,0 +1,49 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+// ===========================================================================
+// File: perfmap.h
+//
+#ifndef PERFPID_H
+#define PERFPID_H
+
+#include "sstring.h"
+#include "fstream.h"
+
+class PerfMap
+{
+private:
+    // The one and only PerfMap for the process.
+    static PerfMap * s_Current;
+
+    // The file stream to write the map to.
+    CFileStream * m_FileStream;
+
+    // Set to true if an error is encountered when writing to the file.
+    bool m_ErrorEncountered;
+
+    // Construct a new map.
+    PerfMap(int pid);
+
+    // Clean-up resources.
+    ~PerfMap();
+
+    // Does the actual work to log to the map.
+    void Log(MethodDesc * pMethod, PCODE pCode, size_t codeSize);
+
+    // Does the actual work to close and flush the map.
+    void Close();
+
+public:
+    // Initialize the map for the current process.
+    static void Initialize();
+
+    // Log a method to the map.
+    static void LogMethod(MethodDesc * pMethod, PCODE pCode, size_t codeSize);
+   
+    // Close the map and flush any remaining data.
+    static void Destroy();
+};
+
+#endif // PERFPID_H