Support large objects in the serializer/deserializer.

test/cctest/test-serialize.cc

 // Copyright 2007-2010 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 768 matching lines @@
   Handle<String> expected =
       isolate->factory()->NewStringFromAsciiChecked("string1");
 
   CHECK(Handle<String>::cast(copy_result)->Equals(*expected));
   CHECK_EQ(builtins_count, CountBuiltins());
 
   delete cache;
 }
 
 
+Vector<const uint8_t> ConstructSource(Vector<const uint8_t> head,
+                                      Vector<const uint8_t> body,
+                                      Vector<const uint8_t> tail, int repeats) {
+  int source_length = head.length() + body.length() * repeats + tail.length();
+  uint8_t* source = NewArray<uint8_t>(static_cast<size_t>(source_length));
+  CopyChars(source, head.start(), head.length());
+  for (int i = 0; i < repeats; i++) {
+    CopyChars(source + head.length() + i * body.length(), body.start(),
+              body.length());
+  }
+  CopyChars(source + head.length() + repeats * body.length(), tail.start(),
+            tail.length());
+  return Vector<const uint8_t>(const_cast<const uint8_t*>(source),
+                               source_length);
+}
+
+
+TEST(SerializeToplevelLargeCodeObject) {
+  FLAG_serialize_toplevel = true;
+  LocalContext context;
+  Isolate* isolate = CcTest::i_isolate();
+  isolate->compilation_cache()->Disable();  // Disable same-isolate code cache.
+
+  v8::HandleScope scope(CcTest::isolate());
+
+  Vector<const uint8_t> source =
+      ConstructSource(STATIC_CHAR_VECTOR("var j=1; try { if (j) throw 1;"),
+                      STATIC_CHAR_VECTOR("for(var i=0;i<1;i++)j++;"),
+                      STATIC_CHAR_VECTOR("} catch (e) { j=7; } j"), 10000);
+  Handle<String> source_str =
+      isolate->factory()->NewStringFromOneByte(source).ToHandleChecked();
+
+  Handle<JSObject> global(isolate->context()->global_object());
+  ScriptData* cache = NULL;
+
+  Handle<SharedFunctionInfo> orig = Compiler::CompileScript(
+      source_str, Handle<String>(), 0, 0, false,
+      Handle<Context>(isolate->native_context()), NULL, &cache,
+      v8::ScriptCompiler::kProduceCodeCache, NOT_NATIVES_CODE);
+
+  CHECK(isolate->heap()->InSpace(orig->code(), LO_SPACE));
+
+  Handle<SharedFunctionInfo> copy;
+  {
+    DisallowCompilation no_compile_expected(isolate);
+    copy = Compiler::CompileScript(
+        source_str, Handle<String>(), 0, 0, false,
+        Handle<Context>(isolate->native_context()), NULL, &cache,
+        v8::ScriptCompiler::kConsumeCodeCache, NOT_NATIVES_CODE);
+  }
+  CHECK_NE(*orig, *copy);
+
+  Handle<JSFunction> copy_fun =
+      isolate->factory()->NewFunctionFromSharedFunctionInfo(
+          copy, isolate->native_context());
+
+  Handle<Object> copy_result =
+      Execution::Call(isolate, copy_fun, global, 0, NULL).ToHandleChecked();
+
+  int result_int;
+  CHECK(copy_result->ToInt32(&result_int));
+  CHECK_EQ(7, result_int);
+
+  delete cache;
+  source.Dispose();
+}
+
+
+TEST(SerializeToplevelLargeString) {
+  FLAG_serialize_toplevel = true;
+  LocalContext context;
+  Isolate* isolate = CcTest::i_isolate();
+  isolate->compilation_cache()->Disable();  // Disable same-isolate code cache.
+
+  v8::HandleScope scope(CcTest::isolate());
+
+  Vector<const uint8_t> source = ConstructSource(
+      STATIC_CHAR_VECTOR("var s = \""), STATIC_CHAR_VECTOR("abcdef"),
+      STATIC_CHAR_VECTOR("\"; s"), 1000000);
+  Handle<String> source_str =
+      isolate->factory()->NewStringFromOneByte(source).ToHandleChecked();
+
+  Handle<JSObject> global(isolate->context()->global_object());
+  ScriptData* cache = NULL;
+
+  Handle<SharedFunctionInfo> orig = Compiler::CompileScript(
+      source_str, Handle<String>(), 0, 0, false,
+      Handle<Context>(isolate->native_context()), NULL, &cache,
+      v8::ScriptCompiler::kProduceCodeCache, NOT_NATIVES_CODE);
+
+  Handle<SharedFunctionInfo> copy;
+  {
+    DisallowCompilation no_compile_expected(isolate);
+    copy = Compiler::CompileScript(
+        source_str, Handle<String>(), 0, 0, false,
+        Handle<Context>(isolate->native_context()), NULL, &cache,
+        v8::ScriptCompiler::kConsumeCodeCache, NOT_NATIVES_CODE);
+  }
+  CHECK_NE(*orig, *copy);
+
+  Handle<JSFunction> copy_fun =
+      isolate->factory()->NewFunctionFromSharedFunctionInfo(
+          copy, isolate->native_context());
+
+  Handle<Object> copy_result =
+      Execution::Call(isolate, copy_fun, global, 0, NULL).ToHandleChecked();
+
+  CHECK_EQ(6 * 1000000, Handle<String>::cast(copy_result)->length());
+  CHECK(isolate->heap()->InSpace(HeapObject::cast(*copy_result), LO_SPACE));
+
+  delete cache;
+  source.Dispose();
+}
+
+
 TEST(SerializeToplevelIsolates) {
   FLAG_serialize_toplevel = true;
 
   const char* source = "function f() { return 'abc'; }; f() + 'def'";
   v8::ScriptCompiler::CachedData* cache;
 
   v8::Isolate* isolate1 = v8::Isolate::New();
   {
     v8::Isolate::Scope iscope(isolate1);
     v8::HandleScope scope(isolate1);
@@ skipping 31 matching lines @@
     {
       DisallowCompilation no_compile(reinterpret_cast<Isolate*>(isolate2));
       script = v8::ScriptCompiler::CompileUnbound(
           isolate2, &source, v8::ScriptCompiler::kConsumeCodeCache);
     }
     v8::Local<v8::Value> result = script->BindToCurrentContext()->Run();
     CHECK(result->ToString()->Equals(v8_str("abcdef")));
   }
   isolate2->Dispose();
 }