638cb4f91d
function instead of baking in the address of the first one that we see in code. This removes the need for fixups processing and makes the stubs safe when there is no natives cache and therefore multiple versions of the builtin functions. Review URL: http://codereview.chromium.org/594009 git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@3832 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
101 lines
3.7 KiB
C++
101 lines
3.7 KiB
C++
// 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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// 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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// Traverses the pointers for memory management.
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static void Iterate(ObjectVisitor* v);
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// Accessors for the native scripts cache. Used in lazy loading.
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static Handle<String> NativesSourceLookup(int index);
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static bool NativesCacheLookup(Vector<const char> name,
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Handle<JSFunction>* handle);
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static void NativesCacheAdd(Vector<const char> name, Handle<JSFunction> fun);
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// Tells whether bootstrapping is active.
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static bool IsActive();
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// Encoding/decoding support for fixup flags.
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class FixupFlagsUseCodeObject: public BitField<bool, 0, 1> {};
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class FixupFlagsArgumentsCount: public BitField<uint32_t, 1, 32-1> {};
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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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};
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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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