Add a proper way to pass the number of processors to V8

src/d8.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 44 matching lines @@
 
 #ifdef ENABLE_VTUNE_JIT_INTERFACE
 #include "third_party/vtune/v8-vtune.h"
 #endif
 
 #include "d8.h"
 
 #ifndef V8_SHARED
 #include "api.h"
 #include "checks.h"
+#include "cpu.h"
 #include "d8-debug.h"
 #include "debug.h"
 #include "natives.h"
 #include "platform.h"
 #include "v8.h"
 #include "v8-defaults.h"
 #endif  // V8_SHARED
 
 #if !defined(_WIN32) && !defined(_WIN64)
 #include <unistd.h>  // NOLINT
@@ skipping 1627 matching lines @@
   MockArrayBufferAllocator mock_arraybuffer_allocator;
   if (options.mock_arraybuffer_allocator) {
     v8::V8::SetArrayBufferAllocator(&mock_arraybuffer_allocator);
   } else {
     v8::V8::SetArrayBufferAllocator(&array_buffer_allocator);
   }
   int result = 0;
   Isolate* isolate = Isolate::GetCurrent();
 #ifndef V8_SHARED
   v8::ResourceConstraints constraints;
-  constraints.ConfigureDefaults(i::OS::TotalPhysicalMemory());
+  constraints.ConfigureDefaults(i::OS::TotalPhysicalMemory(),
+                                i::CPU::NumberOfProcessorsOnline());
   v8::SetResourceConstraints(isolate, &constraints);
 #endif
   DumbLineEditor dumb_line_editor(isolate);
   {
     Initialize(isolate);
 #ifdef ENABLE_VTUNE_JIT_INTERFACE
     vTune::InitializeVtuneForV8();
 #endif
     PerIsolateData data(isolate);
     InitializeDebugger(isolate);
@@ skipping 62 matching lines @@
 }
 
 }  // namespace v8
 
 
 #ifndef GOOGLE3
 int main(int argc, char* argv[]) {
   return v8::Shell::Main(argc, argv);
 }
 #endif