Emit symbol maps for compiled code for use by the Linux perf tool.

runtime/include/dart_api.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef INCLUDE_DART_API_H_
 #define INCLUDE_DART_API_H_
 
 /** \mainpage Dart Embedding API Reference
  *
  * Dart is a class-based programming language for creating structured
@@ skipping 2565 matching lines @@
 // TODO(turnidge): Rename to Dart_LibrarySetNativeResolver?
 
 // --- Profiling support ----
 
 // External pprof support for gathering and dumping symbolic
 // information that can be used for better profile reports for
 // dynamically generated code.
 DART_EXPORT void Dart_InitPprofSupport();
 DART_EXPORT void Dart_GetPprofSymbolInfo(void** buffer, int* buffer_size);
 
+typedef void (*Dart_FileWriterFunction)(const char* buffer, int64_t num_bytes);
+
+// Support for generating symbol maps for use by the Linux perf tool.
+DART_EXPORT void Dart_InitPerfEventsSupport(Dart_FileWriterFunction function);
+
 // Support for generating flow graph compiler debugging output into a file.
-typedef void (*FileWriterFunction)(const char* buffer, int64_t num_bytes);
-DART_EXPORT void Dart_InitFlowGraphPrinting(FileWriterFunction function);
+DART_EXPORT void Dart_InitFlowGraphPrinting(Dart_FileWriterFunction function);
 
 #endif  // INCLUDE_DART_API_H_