Add framework for Dart_Terminate which will cleanup stuff on exit.

runtime/bin/main.cc

 // 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.
 
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>
 
 #include "include/dart_api.h"
 #include "include/dart_debugger_api.h"
@@ skipping 612 matching lines @@
 static int ErrorExit(int exit_code, const char* format, ...) {
   va_list arguments;
   va_start(arguments, format);
   Log::VPrintErr(format, arguments);
   va_end(arguments);
   fflush(stderr);
 
   Dart_ExitScope();
   Dart_ShutdownIsolate();
 
+  Dart_Cleanup();
+
   return exit_code;
 }
 
 
 static int DartErrorExit(Dart_Handle error) {
   const int exit_code = Dart_IsCompilationError(error) ?
       kCompilationErrorExitCode : kErrorExitCode;
   return ErrorExit(exit_code, "%s\n", Dart_GetError(error));
 }
 
@@ skipping 149 matching lines @@
   Dart_EnterScope();
 
   if (generate_script_snapshot) {
     // First create a snapshot.
     Dart_Handle result;
     uint8_t* buffer = NULL;
     intptr_t size = 0;
     result = Dart_CreateScriptSnapshot(&buffer, &size);
     if (Dart_IsError(result)) {
       Log::PrintErr("%s\n", Dart_GetError(result));
-      Dart_ExitScope();
-      Dart_ShutdownIsolate();
       return DartErrorExit(result);
     }
 
     // Write the magic number to indicate file is a script snapshot.
     DartUtils::WriteMagicNumber(snapshot_file);
 
     // Now write the snapshot out to specified file.
     bool bytes_written = snapshot_file->WriteFully(buffer, size);
     ASSERT(bytes_written);
     delete snapshot_file;
@@ skipping 54 matching lines @@
       }
     }
   }
 
   Dart_ExitScope();
   // Shutdown the isolate.
   Dart_ShutdownIsolate();
   // Terminate process exit-code handler.
   Process::TerminateExitCodeHandler();
 
+  Dart_Cleanup();
+
   // Free copied argument strings if converted.
   if (argv_converted) {
     for (int i = 0; i < argc; i++) free(argv[i]);
   }
 
   return Process::GlobalExitCode();
 }
 
 }  // namespace bin
 }  // namespace dart
 
 int main(int argc, char** argv) {
   return dart::bin::main(argc, argv);
 }