Change ArrayBuffer API and implementation to use embedder-provided allocator.

src/api.cc

 // Copyright 2012 the V8 project authors. 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
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 5142 matching lines @@
 
 
 void v8::V8::SetJitCodeEventHandler(
     JitCodeEventOptions options, JitCodeEventHandler event_handler) {
   i::Isolate* isolate = i::Isolate::Current();
   // Ensure that logging is initialized for our isolate.
   isolate->InitializeLoggingAndCounters();
   isolate->logger()->SetCodeEventHandler(options, event_handler);
 }
 
+void v8::V8::SetArrayBufferAllocator(
+    ArrayBuffer::Allocator* allocator) {
+  if (!ApiCheck(i::V8::ArrayBufferAllocator() == NULL,
+                "v8::V8::SetArrayBufferAllocator",
+                "ArrayBufferAllocator might only be set once"))
+    return;
+  i::V8::SetArrayBufferAllocator(allocator);
+}
+
 
 bool v8::V8::Dispose() {
   i::Isolate* isolate = i::Isolate::Current();
   if (!ApiCheck(isolate != NULL && isolate->IsDefaultIsolate(),
                 "v8::V8::Dispose()",
                 "Use v8::Isolate::Dispose() for a non-default isolate.")) {
     return false;
   }
   i::V8::TearDown();
   return true;
@@ skipping 949 matching lines @@
   has_pending_exception = result.is_null();
   EXCEPTION_BAILOUT_CHECK(isolate, Local<Object>());
   return Utils::ToLocal(result);
 }
 
 
 bool v8::ArrayBuffer::IsExternal() const {
   return Utils::OpenHandle(this)->is_external();
 }
 
-v8::ArrayBufferContents::~ArrayBufferContents() {
-  free(data_);
-  data_ = NULL;
-  byte_length_ = 0;
-}
-
-
-void v8::ArrayBuffer::Externalize(ArrayBufferContents* contents) {
+v8::ArrayBuffer::Contents v8::ArrayBuffer::Externalize() {
   i::Handle<i::JSArrayBuffer> obj = Utils::OpenHandle(this);
   ApiCheck(!obj->is_external(),
             "v8::ArrayBuffer::Externalize",
             "ArrayBuffer already externalized");
   obj->set_is_external(true);
   size_t byte_length = static_cast<size_t>(obj->byte_length()->Number());
-  ApiCheck(contents->data_ == NULL,
-           "v8::ArrayBuffer::Externalize",
-           "Externalizing into non-empty ArrayBufferContents");
-  contents->data_ = obj->backing_store();
-  contents->byte_length_ = byte_length;
+  Contents contents;
+  contents.data_ = obj->backing_store();
+  contents.byte_length_ = byte_length;
+  return contents;
 }
 
 
 void v8::ArrayBuffer::Neuter() {
   i::Handle<i::JSArrayBuffer> obj = Utils::OpenHandle(this);
   i::Isolate* isolate = obj->GetIsolate();
   ApiCheck(obj->is_external(),
            "v8::ArrayBuffer::Neuter",
            "Only externalized ArrayBuffers can be neutered");
   LOG_API(obj->GetIsolate(), "v8::ArrayBuffer::Neuter()");
@@ skipping 1834 matching lines @@
 
   v->VisitPointers(blocks_.first(), first_block_limit_);
 
   for (int i = 1; i < blocks_.length(); i++) {
     v->VisitPointers(blocks_[i], &blocks_[i][kHandleBlockSize]);
   }
 }
 
 
 } }  // namespace v8::internal