Run SharedArrayBuffer WPT tests in virtual/sharedarraybuffer testsuite

third_party/WebKit/Source/bindings/core/v8/SerializedScriptValue.cpp

 /*
  * Copyright (C) 2010 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 12 matching lines @@
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "bindings/core/v8/SerializedScriptValue.h"
 
+#include <algorithm>
 #include <memory>
 #include "bindings/core/v8/ExceptionState.h"
 #include "bindings/core/v8/IDLTypes.h"
 #include "bindings/core/v8/NativeValueTraitsImpl.h"
 #include "bindings/core/v8/SerializationTag.h"
 #include "bindings/core/v8/SerializedScriptValueFactory.h"
 #include "bindings/core/v8/Transferables.h"
 #include "bindings/core/v8/V8ArrayBuffer.h"
 #include "bindings/core/v8/V8ImageBitmap.h"
 #include "bindings/core/v8/V8MessagePort.h"
@@ skipping 393 matching lines @@
     } else {
       exception_state.ThrowTypeError("Value at index " + String::Number(i) +
                                      " does not have a transferable type.");
       return false;
     }
     i++;
   }
   return true;
 }
 
+ArrayBufferArray SerializedScriptValue::ExtractNonSharedArrayBuffers(
+    Transferables& transferables) {
+  ArrayBufferArray& array_buffers = transferables.array_buffers;
+  ArrayBufferArray result;
+  auto non_shared_begin =
+      std::partition(array_buffers.begin(), array_buffers.end(),
+                     [](Member<DOMArrayBufferBase>& array_buffer) {
+                       return array_buffer->IsShared();
+                     });
+  result.AppendRange(non_shared_begin, array_buffers.end());
+  array_buffers.erase(non_shared_begin - array_buffers.begin(),
+                      array_buffers.end() - non_shared_begin);

[haraken, 2017/05/05 00:52:52]

Do we have a test case where shared array buffers are not stored in a contiguous
range?

  [NonShrared, Shared, Shared, NonShared, NonShared, Shared, NonShared, ...]

[binji, 2017/05/05 18:53:39]

Nope, but I just added one.

+  return result;
+}
+
 std::unique_ptr<SerializedScriptValue::ArrayBufferContentsArray>
 SerializedScriptValue::TransferArrayBufferContents(
     v8::Isolate* isolate,
     const ArrayBufferArray& array_buffers,
     ExceptionState& exception_state) {
   if (!array_buffers.size())
     return nullptr;
 
   for (auto it = array_buffers.begin(); it != array_buffers.end(); ++it) {
     DOMArrayBufferBase* array_buffer = *it;
@@ skipping 72 matching lines @@
   // Only (re)register allocation cost for transferables if this
   // SerializedScriptValue has explicitly unregistered them before.
   if (array_buffer_contents_array_ &&
       transferables_need_external_allocation_registration_) {
     for (auto& buffer : *array_buffer_contents_array_)
       buffer.RegisterExternalAllocationWithCurrentContext();
   }
 }
 
 }  // namespace blink