Downgrade V8 to 3.1.8.25

There are serious performance regressions both in V8 and our own legacy
networking stack. Until we correct our own problems we are going back to the
old V8.

1 files changed, 26 insertions, 97 deletions

diff --git a/deps/v8/src/bootstrapper.h b/deps/v8/src/bootstrapper.h
index abf61b9fe5..2b789e28ea 100644
--- a/deps/v8/src/bootstrapper.h
+++ b/deps/v8/src/bootstrapper.h
@@ -29,148 +29,77 @@
 #ifndef V8_BOOTSTRAPPER_H_
 #define V8_BOOTSTRAPPER_H_
 
-#include "allocation.h"
-
 namespace v8 {
 namespace internal {
 
 
-// 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 {
+class BootstrapperActive BASE_EMBEDDED {
  public:
-  explicit SourceCodeCache(Script::Type type): type_(type), cache_(NULL) { }
-
-  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;
-  }
+  BootstrapperActive() { nesting_++; }
+  ~BootstrapperActive() { nesting_--; }
 
-  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_));
-  }
+  // Support for thread preemption.
+  static int ArchiveSpacePerThread();
+  static char* ArchiveState(char* to);
+  static char* RestoreState(char* from);
 
  private:
-  Script::Type type_;
-  FixedArray* cache_;
-  DISALLOW_COPY_AND_ASSIGN(SourceCodeCache);
+  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 {
+class Bootstrapper : public AllStatic {
  public:
   // Requires: Heap::Setup has been called.
-  void Initialize(bool create_heap_objects);
-  void TearDown();
+  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*.
-  Handle<Context> CreateEnvironment(
-      Isolate* isolate,
+  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.
-  void DetachGlobal(Handle<Context> env);
+  static void DetachGlobal(Handle<Context> env);
 
   // Reattach an outer global object to an environment.
-  void ReattachGlobal(Handle<Context> env, Handle<Object> global_object);
+  static void ReattachGlobal(Handle<Context> env, Handle<Object> global_object);
 
   // Traverses the pointers for memory management.
-  void Iterate(ObjectVisitor* v);
+  static void Iterate(ObjectVisitor* v);
 
   // Accessor for the native scripts source code.
-  Handle<String> NativesSourceLookup(int index);
+  static Handle<String> NativesSourceLookup(int index);
 
   // Tells whether bootstrapping is active.
-  bool IsActive() const { return nesting_ != 0; }
+  static bool IsActive() { return BootstrapperActive::IsActive(); }
 
   // Support for thread preemption.
   static int ArchiveSpacePerThread();
-  char* ArchiveState(char* to);
-  char* RestoreState(char* from);
-  void FreeThreadResources();
+  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.
-  char* AllocateAutoDeletedArray(int bytes);
+  static char* AllocateAutoDeletedArray(int bytes);
 
   // Used for new context creation.
-  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);
+  static bool InstallExtensions(Handle<Context> global_context,
+                                v8::ExtensionConfiguration* extensions);
 };
 
 
 class NativesExternalStringResource
     : public v8::String::ExternalAsciiStringResource {
  public:
-  NativesExternalStringResource(Bootstrapper* bootstrapper,
-                                const char* source,
-                                size_t length);
+  explicit NativesExternalStringResource(const char* source);
 
   const char* data() const {
     return data_;