Add Process.runSync for running processe synchronously.

runtime/bin/io_buffer.cc

Index: runtime/bin/io_buffer.cc
diff --git a/runtime/bin/io_buffer.cc b/runtime/bin/io_buffer.cc
index dbc10476f37d7900083b93b8eef2220305be0d16..b82f4eac6020239ba386735551f7421222354b43 100644
--- a/runtime/bin/io_buffer.cc
+++ b/runtime/bin/io_buffer.cc
@@ -24,6 +24,19 @@ Dart_Handle IOBuffer::Allocate(intptr_t size, uint8_t **buffer) {
   return result;
 }
 
+

[Bill Hesse, 2013/08/09 15:32:23]

I see why it is difficult to use Create in Allocate, to avoid duplicated code,
so it is OK not to.

+Dart_Handle IOBuffer::Create(uint8_t *buffer, intptr_t size) {
+  Dart_Handle result = Dart_NewExternalTypedData(Dart_TypedData_kUint8,
+                                                 buffer,
+                                                 size);
+  Dart_NewWeakPersistentHandle(result, buffer, IOBuffer::Finalizer);
+  if (Dart_IsError(result)) {
+    Dart_PropagateError(result);
+  }
+  return result;
+}
+
+
 uint8_t* IOBuffer::Allocate(intptr_t size) {
   return new uint8_t[size];
 }