Don't use IsolateData for the exit hook as multiple embedders share the dart/bin while using differ…

runtime/bin/process.cc

 // Copyright (c) 2013, 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.
 
 #if !defined(DART_IO_DISABLED)
 
 #include "bin/process.h"
 
 #include "bin/dartutils.h"
 #include "bin/io_buffer.h"
@@ skipping 228 matching lines @@
   intptr_t signal = DartUtils::GetIntptrValue(Dart_GetNativeArgument(args, 1));
   bool success = Process::Kill(pid, signal);
   Dart_SetReturnValue(args, Dart_NewBoolean(success));
 }
 
 
 void FUNCTION_NAME(Process_Exit)(Dart_NativeArguments args) {
   int64_t status = 0;
   // Ignore result if passing invalid argument and just exit 0.
   DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 0), &status);
-  IsolateData* isolate_data =
-      reinterpret_cast<IsolateData*>(Dart_CurrentIsolateData());
-  if (isolate_data->exit_hook() != NULL) {
-    isolate_data->exit_hook()(status);
-  }
+  Process::RunExitHook(status);
   Dart_ExitIsolate();
   Platform::Exit(static_cast<int>(status));
 }
 
 
 void FUNCTION_NAME(Process_SetExitCode)(Dart_NativeArguments args) {
   int64_t status = 0;
   // Ignore result if passing invalid argument and just set exit code to 0.
   DartUtils::GetInt64Value(Dart_GetNativeArgument(args, 0), &status);
   Process::SetGlobalExitCode(status);
@@ skipping 103 matching lines @@
   if (!Dart_IsError(external_array)) {
     memmove(buffer, system_string, system_len);
   }
   Dart_SetReturnValue(args, external_array);
 }
 
 }  // namespace bin
 }  // namespace dart
 
 #endif  // !defined(DART_IO_DISABLED)