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118 lines
4.1 KiB
118 lines
4.1 KiB
// Copyright 2006-2008 the V8 project authors. All rights reserved.
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// Redistribution and use in source and binary forms, with or without
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// modification, are permitted provided that the following conditions are
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// met:
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//
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// * Redistributions of source code must retain the above copyright
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// notice, this list of conditions and the following disclaimer.
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// * Redistributions in binary form must reproduce the above
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// copyright notice, this list of conditions and the following
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// disclaimer in the documentation and/or other materials provided
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// with the distribution.
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// * Neither the name of Google Inc. nor the names of its
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// contributors may be used to endorse or promote products derived
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// from this software without specific prior written permission.
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//
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// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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#ifndef V8_BOOTSTRAPPER_H_
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#define V8_BOOTSTRAPPER_H_
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namespace v8 {
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namespace internal {
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class BootstrapperActive BASE_EMBEDDED {
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public:
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BootstrapperActive() { nesting_++; }
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~BootstrapperActive() { nesting_--; }
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// Support for thread preemption.
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static int ArchiveSpacePerThread();
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static char* ArchiveState(char* to);
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static char* RestoreState(char* from);
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private:
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static bool IsActive() { return nesting_ != 0; }
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static int nesting_;
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friend class Bootstrapper;
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};
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// The Boostrapper is the public interface for creating a JavaScript global
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// context.
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class Bootstrapper : public AllStatic {
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public:
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// Requires: Heap::Setup has been called.
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static void Initialize(bool create_heap_objects);
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static void TearDown();
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// Creates a JavaScript Global Context with initial object graph.
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// The returned value is a global handle casted to V8Environment*.
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static Handle<Context> CreateEnvironment(
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Handle<Object> global_object,
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v8::Handle<v8::ObjectTemplate> global_template,
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v8::ExtensionConfiguration* extensions);
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// Detach the environment from its outer global object.
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static void DetachGlobal(Handle<Context> env);
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// Reattach an outer global object to an environment.
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static void ReattachGlobal(Handle<Context> env, Handle<Object> global_object);
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// Traverses the pointers for memory management.
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static void Iterate(ObjectVisitor* v);
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// Accessor for the native scripts source code.
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static Handle<String> NativesSourceLookup(int index);
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// Tells whether bootstrapping is active.
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static bool IsActive() { return BootstrapperActive::IsActive(); }
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// Support for thread preemption.
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static int ArchiveSpacePerThread();
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static char* ArchiveState(char* to);
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static char* RestoreState(char* from);
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static void FreeThreadResources();
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// This will allocate a char array that is deleted when V8 is shut down.
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// It should only be used for strictly finite allocations.
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static char* AllocateAutoDeletedArray(int bytes);
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// Used for new context creation.
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static bool InstallExtensions(Handle<Context> global_context,
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v8::ExtensionConfiguration* extensions);
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};
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class NativesExternalStringResource
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: public v8::String::ExternalAsciiStringResource {
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public:
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explicit NativesExternalStringResource(const char* source);
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const char* data() const {
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return data_;
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}
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size_t length() const {
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return length_;
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}
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private:
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const char* data_;
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size_t length_;
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};
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}} // namespace v8::internal
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#endif // V8_BOOTSTRAPPER_H_
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