// 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 { class BootstrapperActive BASE_EMBEDDED { public: BootstrapperActive() { nesting_++; } ~BootstrapperActive() { nesting_--; } // Support for thread preemption. static int ArchiveSpacePerThread(); static char* ArchiveState(char* to); static char* RestoreState(char* from); private: static bool IsActive() { return nesting_ != 0; } static int nesting_; friend class Bootstrapper; }; // 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); // Reattach an outer global object to an environment. static void ReattachGlobal(Handle<Context> env, Handle<Object> global_object); // Traverses the pointers for memory management. static void Iterate(ObjectVisitor* v); // Accessor for the native scripts source code. static Handle<String> NativesSourceLookup(int index); // Tells whether bootstrapping is active. static bool IsActive() { return BootstrapperActive::IsActive(); } // Support for thread preemption. static int ArchiveSpacePerThread(); static char* ArchiveState(char* to); static char* RestoreState(char* from); static void FreeThreadResources(); // This will allocate a char array that is deleted when V8 is shut down. // It should only be used for strictly finite allocations. static char* AllocateAutoDeletedArray(int bytes); // Used for new context creation. static bool InstallExtensions(Handle<Context> global_context, v8::ExtensionConfiguration* extensions); }; class NativesExternalStringResource : public v8::String::ExternalAsciiStringResource { public: explicit NativesExternalStringResource(const char* source); const char* data() const { return data_; } size_t length() const { return length_; } private: const char* data_; size_t length_; }; }} // namespace v8::internal #endif // V8_BOOTSTRAPPER_H_