Merge isolates to bleeding_edge.

src/bootstrapper.h

 // 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
@@ skipping 15 matching lines @@
 // 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 {
+// A SourceCodeCache uses a FixedArray to store pairs of
+// (AsciiString*, JSFunction*), mapping names of native code files
+// (runtime.js, etc.) to precompiled functions. Instead of mapping
+// names to functions it might make sense to let the JS2C tool
+// generate an index for each native JS file.
+class SourceCodeCache BASE_EMBEDDED {
  public:
-  BootstrapperActive() { nesting_++; }
-  ~BootstrapperActive() { nesting_--; }
+  explicit SourceCodeCache(Script::Type type): type_(type), cache_(NULL) { }
 
-  // Support for thread preemption.
-  static int ArchiveSpacePerThread();
-  static char* ArchiveState(char* to);
-  static char* RestoreState(char* from);
+  void Initialize(bool create_heap_objects) {
+    cache_ = create_heap_objects ? HEAP->empty_fixed_array() : NULL;
+  }
+
+  void Iterate(ObjectVisitor* v) {
+    v->VisitPointer(BitCast<Object**, FixedArray**>(&cache_));
+  }
+
+  bool Lookup(Vector<const char> name, Handle<SharedFunctionInfo>* handle) {
+    for (int i = 0; i < cache_->length(); i+=2) {
+      SeqAsciiString* str = SeqAsciiString::cast(cache_->get(i));
+      if (str->IsEqualTo(name)) {
+        *handle = Handle<SharedFunctionInfo>(
+            SharedFunctionInfo::cast(cache_->get(i + 1)));
+        return true;
+      }
+    }
+    return false;
+  }
+
+  void Add(Vector<const char> name, Handle<SharedFunctionInfo> shared) {
+    HandleScope scope;
+    int length = cache_->length();
+    Handle<FixedArray> new_array =
+        FACTORY->NewFixedArray(length + 2, TENURED);
+    cache_->CopyTo(0, *new_array, 0, cache_->length());
+    cache_ = *new_array;
+    Handle<String> str = FACTORY->NewStringFromAscii(name, TENURED);
+    cache_->set(length, *str);
+    cache_->set(length + 1, *shared);
+    Script::cast(shared->script())->set_type(Smi::FromInt(type_));
+  }
 
  private:
-  static bool IsActive() { return nesting_ != 0; }
-  static int nesting_;
-  friend class Bootstrapper;
+  Script::Type type_;
+  FixedArray* cache_;
+  DISALLOW_COPY_AND_ASSIGN(SourceCodeCache);
 };
 
 
 // The Boostrapper is the public interface for creating a JavaScript global
 // context.
-class Bootstrapper : public AllStatic {
+class Bootstrapper {
  public:
   // Requires: Heap::Setup has been called.
-  static void Initialize(bool create_heap_objects);
-  static void TearDown();
+  void Initialize(bool create_heap_objects);
+  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<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);
+  void DetachGlobal(Handle<Context> env);
 
   // Reattach an outer global object to an environment.
-  static void ReattachGlobal(Handle<Context> env, Handle<Object> global_object);
+  void ReattachGlobal(Handle<Context> env, Handle<Object> global_object);
 
   // Traverses the pointers for memory management.
-  static void Iterate(ObjectVisitor* v);
+  void Iterate(ObjectVisitor* v);
 
   // Accessor for the native scripts source code.
-  static Handle<String> NativesSourceLookup(int index);
+  Handle<String> NativesSourceLookup(int index);
 
   // Tells whether bootstrapping is active.
-  static bool IsActive() { return BootstrapperActive::IsActive(); }
+  bool IsActive() const { return nesting_ != 0; }
 
   // Support for thread preemption.
-  static int ArchiveSpacePerThread();
-  static char* ArchiveState(char* to);
-  static char* RestoreState(char* from);
-  static void FreeThreadResources();
+  RLYSTC int ArchiveSpacePerThread();
+  char* ArchiveState(char* to);
+  char* RestoreState(char* from);
+  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);
+  char* AllocateAutoDeletedArray(int bytes);
 
   // Used for new context creation.
-  static bool InstallExtensions(Handle<Context> global_context,
-                                v8::ExtensionConfiguration* extensions);
+  bool InstallExtensions(Handle<Context> global_context,
+                         v8::ExtensionConfiguration* extensions);
+
+  SourceCodeCache* extensions_cache() { return &extensions_cache_; }
+
+ private:
+  typedef int NestingCounterType;
+  NestingCounterType nesting_;
+  SourceCodeCache extensions_cache_;
+  // This is for delete, not delete[].
+  List<char*>* delete_these_non_arrays_on_tear_down_;
+  // This is for delete[]
+  List<char*>* delete_these_arrays_on_tear_down_;
+
+  friend class BootstrapperActive;
+  friend class Isolate;
+  friend class NativesExternalStringResource;
+
+  Bootstrapper();
+
+  DISALLOW_COPY_AND_ASSIGN(Bootstrapper);
+};
+
+
+class BootstrapperActive BASE_EMBEDDED {
+ public:
+  BootstrapperActive() {
+    ++Isolate::Current()->bootstrapper()->nesting_;
+  }
+
+  ~BootstrapperActive() {
+    --Isolate::Current()->bootstrapper()->nesting_;
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(BootstrapperActive);
 };
 
 
 class NativesExternalStringResource
     : public v8::String::ExternalAsciiStringResource {
  public:
-  explicit NativesExternalStringResource(const char* source);
+  explicit NativesExternalStringResource(Bootstrapper* bootstrapper,
+                                         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_