Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 1 | // Copyright 2006-2008 the V8 project authors. All rights reserved. |
| 2 | // Redistribution and use in source and binary forms, with or without |
| 3 | // modification, are permitted provided that the following conditions are |
| 4 | // met: |
| 5 | // |
| 6 | // * Redistributions of source code must retain the above copyright |
| 7 | // notice, this list of conditions and the following disclaimer. |
| 8 | // * Redistributions in binary form must reproduce the above |
| 9 | // copyright notice, this list of conditions and the following |
| 10 | // disclaimer in the documentation and/or other materials provided |
| 11 | // with the distribution. |
| 12 | // * Neither the name of Google Inc. nor the names of its |
| 13 | // contributors may be used to endorse or promote products derived |
| 14 | // from this software without specific prior written permission. |
| 15 | // |
| 16 | // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 17 | // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 18 | // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| 19 | // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| 20 | // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 21 | // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| 22 | // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| 23 | // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| 24 | // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| 25 | // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| 26 | // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 27 | |
| 28 | |
| 29 | #ifndef V8_BOOTSTRAPPER_H_ |
| 30 | #define V8_BOOTSTRAPPER_H_ |
| 31 | |
| 32 | namespace v8 { |
| 33 | namespace internal { |
| 34 | |
| 35 | // The Boostrapper is the public interface for creating a JavaScript global |
| 36 | // context. |
| 37 | class Bootstrapper : public AllStatic { |
| 38 | public: |
| 39 | // Requires: Heap::Setup has been called. |
| 40 | static void Initialize(bool create_heap_objects); |
| 41 | static void TearDown(); |
| 42 | |
| 43 | // Creates a JavaScript Global Context with initial object graph. |
| 44 | // The returned value is a global handle casted to V8Environment*. |
| 45 | static Handle<Context> CreateEnvironment( |
| 46 | Handle<Object> global_object, |
| 47 | v8::Handle<v8::ObjectTemplate> global_template, |
| 48 | v8::ExtensionConfiguration* extensions); |
| 49 | |
| 50 | // Detach the environment from its outer global object. |
| 51 | static void DetachGlobal(Handle<Context> env); |
| 52 | |
| 53 | // Traverses the pointers for memory management. |
| 54 | static void Iterate(ObjectVisitor* v); |
| 55 | |
| 56 | // Accessors for the native scripts cache. Used in lazy loading. |
| 57 | static Handle<String> NativesSourceLookup(int index); |
| 58 | static bool NativesCacheLookup(Vector<const char> name, |
| 59 | Handle<JSFunction>* handle); |
| 60 | static void NativesCacheAdd(Vector<const char> name, Handle<JSFunction> fun); |
| 61 | |
| 62 | // Append code that needs fixup at the end of boot strapping. |
| 63 | static void AddFixup(Code* code, MacroAssembler* masm); |
| 64 | |
| 65 | // Tells whether bootstrapping is active. |
| 66 | static bool IsActive(); |
| 67 | |
| 68 | // Encoding/decoding support for fixup flags. |
Steve Block | 3ce2e20 | 2009-11-05 08:53:23 +0000 | [diff] [blame] | 69 | class FixupFlagsUseCodeObject: public BitField<bool, 0, 1> {}; |
| 70 | class FixupFlagsArgumentsCount: public BitField<uint32_t, 1, 32-1> {}; |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 71 | |
| 72 | // Support for thread preemption. |
| 73 | static int ArchiveSpacePerThread(); |
| 74 | static char* ArchiveState(char* to); |
| 75 | static char* RestoreState(char* from); |
| 76 | static void FreeThreadResources(); |
| 77 | }; |
| 78 | |
Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame^] | 79 | |
| 80 | class NativesExternalStringResource |
| 81 | : public v8::String::ExternalAsciiStringResource { |
| 82 | public: |
| 83 | explicit NativesExternalStringResource(const char* source); |
| 84 | |
| 85 | const char* data() const { |
| 86 | return data_; |
| 87 | } |
| 88 | |
| 89 | size_t length() const { |
| 90 | return length_; |
| 91 | } |
| 92 | private: |
| 93 | const char* data_; |
| 94 | size_t length_; |
| 95 | }; |
| 96 | |
Steve Block | a7e24c1 | 2009-10-30 11:49:00 +0000 | [diff] [blame] | 97 | }} // namespace v8::internal |
| 98 | |
| 99 | #endif // V8_BOOTSTRAPPER_H_ |