Added support for isolate unhandled exceptions.

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 604 matching lines @@
  * figure out which isolate is being interrupted.
  *
  * \return The embedder returns true if the isolate should continue
  *   execution. If the embedder returns false, the isolate will be
  *   unwound (currently unimplemented).
  */
 typedef bool (*Dart_IsolateInterruptCallback)();
 // TODO(turnidge): Define and implement unwinding.
 
 /**
+ * An isolate unhandled exception callback function.
+ *
+ * This callback, provided by the embedder, is called when an unhandled
+ * exception or internal error is thrown during isolate execution. When the
+ * callback is invoked, Dart_CurrentIsolate can be used to figure out which
+ * isolate was running when the exception was thrown.
+ *
+ * \param error The unhandled exception or error.  This handle's scope is
+ *   only valid until the embedder returns from this callback.
+ */
+typedef void (*Dart_IsolateUnhandledExceptionCallback)(Dart_Handle error);
+
+/**
  * An isolate shutdown callback function.
  *
  * This callback, provided by the embedder, is called after the vm
  * shuts down an isolate.  Since the isolate has been shut down, it is
  * not safe to enter the isolate or use it to run any Dart code.
  *
  * This function should be used to dispose of native resources that
  * are allocated to an isolate in order to avoid leaks.
  *
  * \param callback_data The same callback data which was passed to the
  *   isolate when it was created.
  *
  */
 typedef void (*Dart_IsolateShutdownCallback)(void* callback_data);
 
 /**
  * Initializes the VM.
  *
  * \param create A function to be called during isolate creation.
  *   See Dart_IsolateCreateCallback.
  * \param interrupt A function to be called when an isolate is interrupted.
  *   See Dart_IsolateInterruptCallback.
+ * \param unhandled_exception A function to be called if an isolate has an
+ *   unhandled exception.  Set Dart_IsolateUnhandledExceptionCallback.
+ * \param shutdown A function to be called when an isolate is shutdown.
+ *   See Dart_IsolateShutdownCallback.
  *
  * \return True if initialization is successful.
  */
-DART_EXPORT bool Dart_Initialize(Dart_IsolateCreateCallback create,
-                                 Dart_IsolateInterruptCallback interrupt,
-                                 Dart_IsolateShutdownCallback shutdown);
+DART_EXPORT bool Dart_Initialize(
+    Dart_IsolateCreateCallback create,
+    Dart_IsolateInterruptCallback interrupt,
+    Dart_IsolateUnhandledExceptionCallback unhandled_exception,
+    Dart_IsolateShutdownCallback shutdown);
 
 /**
  * Sets command line flags. Should be called before Dart_Initialize.
  *
  * \param argc The length of the arguments array.
  * \param argv An array of arguments.
  *
  * \return True if VM flags set successfully.
  */
 DART_EXPORT bool Dart_SetVMFlags(int argc, const char** argv);
@@ skipping 2108 matching lines @@
  *
  * \param object An object.
  * \param peer A value to store in the peer field.
  *
  * \return Returns an error if 'object' is a subtype of Null, num, or
  *   bool.
  */
 DART_EXPORT Dart_Handle Dart_SetPeer(Dart_Handle object, void* peer);
 
 #endif  // INCLUDE_DART_API_H_