CSE2410 Fall 2014 Bounce

// Copyright 2006-2008 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

//       with the distribution.

//     * Neither the name of Google Inc. nor the names of its

//       contributors may be used to endorse or promote products derived

//       from this software without specific prior written permission.

//

// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

// 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.

#ifndef V8_BOOTSTRAPPER_H_

#define V8_BOOTSTRAPPER_H_

namespace v8 { namespace internal {

// The Boostrapper is the public interface for creating a JavaScript global

// context.

class Bootstrapper : public AllStatic {

 public:

  // Requires: Heap::Setup has been called.

  static void Initialize(bool create_heap_objects);

  static void TearDown();

  // Creates a JavaScript Global Context with initial object graph.

  // The returned value is a global handle casted to V8Environment*.

  static Handle<Context> CreateEnvironment(

      Handle<Object> global_object,

      v8::Handle<v8::ObjectTemplate> global_template,

      v8::ExtensionConfiguration* extensions);

  // Detach the environment from its outer global object.

  static void DetachGlobal(Handle<Context> env);

  // Traverses the pointers for memory management.

  static void Iterate(ObjectVisitor* v);

  // Accessors for the native scripts cache. Used in lazy loading.

  static Handle<String> NativesSourceLookup(int index);

  static bool NativesCacheLookup(Vector<const char> name,

                                 Handle<JSFunction>* handle);

  static void NativesCacheAdd(Vector<const char> name, Handle<JSFunction> fun);

  // Append code that needs fixup at the end of boot strapping.

  static void AddFixup(Code* code, MacroAssembler* masm);

  // Tells whether bootstrapping is active.

  static bool IsActive();

  // Encoding/decoding support for fixup flags.

  class FixupFlagsIsPCRelative: public BitField<bool, 0, 1> {};

  class FixupFlagsUseCodeObject: public BitField<bool, 1, 1> {};

  class FixupFlagsArgumentsCount: public BitField<uint32_t, 2, 32-2> {};

  // Support for thread preemption.

  static int ArchiveSpacePerThread();

  static char* ArchiveState(char* to);

  static char* RestoreState(char* from);

};

}}  // namespace v8::internal

#endif  // V8_BOOTSTRAPPER_H_