Provide a convenience array buffer allocator

samples/process.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 20 matching lines @@
 
 #include <stdlib.h>
 #include <string.h>
 
 #include <map>
 #include <string>
 
 using namespace std;
 using namespace v8;
 
-class ArrayBufferAllocator : public v8::ArrayBuffer::Allocator {
- public:
-  virtual void* Allocate(size_t length) {
-    void* data = AllocateUninitialized(length);
-    return data == NULL ? data : memset(data, 0, length);
-  }
-  virtual void* AllocateUninitialized(size_t length) { return malloc(length); }
-  virtual void Free(void* data, size_t) { free(data); }
-};
-
-
 // These interfaces represent an existing request processing interface.
 // The idea is to imagine a real application that uses these interfaces
 // and then add scripting capabilities that allow you to interact with
 // the objects through JavaScript.
 
 /**
  * A simplified http request.
  */
 class HttpRequest {
  public:
@@ skipping 630 matching lines @@
   v8::Platform* platform = v8::platform::CreateDefaultPlatform();
   v8::V8::InitializePlatform(platform);
   v8::V8::Initialize();
   map<string, string> options;
   string file;
   ParseOptions(argc, argv, &options, &file);
   if (file.empty()) {
     fprintf(stderr, "No script was specified.\n");
     return 1;
   }
-  ArrayBufferAllocator array_buffer_allocator;
   Isolate::CreateParams create_params;
-  create_params.array_buffer_allocator = &array_buffer_allocator;
+  create_params.array_buffer_allocator =
+      v8::ArrayBuffer::Allocator::NewDefaultAllocator();
   Isolate* isolate = Isolate::New(create_params);
   Isolate::Scope isolate_scope(isolate);
   HandleScope scope(isolate);
   Local<String> source;
   if (!ReadFile(isolate, file).ToLocal(&source)) {
     fprintf(stderr, "Error reading '%s'.\n", file.c_str());
     return 1;
   }
   JsHttpRequestProcessor processor(isolate, source);
   map<string, string> output;
   if (!processor.Initialize(&options, &output)) {
     fprintf(stderr, "Error initializing processor.\n");
     return 1;
   }
   if (!ProcessEntries(platform, &processor, kSampleSize, kSampleRequests))
     return 1;
   PrintMap(&output);
 }