Serializer: cache hashmaps on the isolate.

src/isolate.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stdlib.h>
 
 #include <fstream>  // NOLINT(readability/streams)
 #include <sstream>
 
 #include "src/v8.h"
@@ skipping 1780 matching lines @@
   SetIsolateThreadLocals(saved_isolate, saved_data);
 }
 
 
 void Isolate::GlobalTearDown() {
   delete thread_data_table_;
   thread_data_table_ = NULL;
 }
 
 
+void Isolate::ClearSerializerData() {
+  delete external_reference_table_;
+  external_reference_table_ = NULL;
+  delete external_reference_map_;
+  external_reference_map_ = NULL;
+  delete root_index_map_;
+  root_index_map_ = NULL;
+}
+
+
 void Isolate::Deinit() {
   TRACE_ISOLATE(deinit);
 
   debug()->Unload();
 
   FreeThreadResources();
 
   if (concurrent_recompilation_enabled()) {
     optimizing_compiler_thread_->Stop();
     delete optimizing_compiler_thread_;
@@ skipping 27 matching lines @@
   delete basic_block_profiler_;
   basic_block_profiler_ = NULL;
 
   heap_.TearDown();
   logger_->TearDown();
 
   delete heap_profiler_;
   heap_profiler_ = NULL;
   delete cpu_profiler_;
   cpu_profiler_ = NULL;
+
+  ClearSerializerData();
 }
 
 
 void Isolate::SetIsolateThreadLocals(Isolate* isolate,
                                      PerIsolateThreadData* data) {
   base::Thread::SetThreadLocal(isolate_key_, isolate);
   base::Thread::SetThreadLocal(per_isolate_thread_data_key_, data);
 }
 
 
@@ skipping 68 matching lines @@
   delete code_range_;
   code_range_ = NULL;
   delete global_handles_;
   global_handles_ = NULL;
   delete eternal_handles_;
   eternal_handles_ = NULL;
 
   delete string_stream_debug_object_cache_;
   string_stream_debug_object_cache_ = NULL;
 
-  delete external_reference_table_;
-  external_reference_table_ = NULL;
-
   delete random_number_generator_;
   random_number_generator_ = NULL;
 
   delete debug_;
   debug_ = NULL;
 }
 
 
 void Isolate::InitializeThreadLocal() {
   thread_local_top_.isolate_ = this;
@@ skipping 684 matching lines @@
   if (prev_ && prev_->Intercept(flag)) return true;
   // Then check whether this scope intercepts.
   if ((flag & intercept_mask_)) {
     intercepted_flags_ |= flag;
     return true;
   }
   return false;
 }
 
 } }  // namespace v8::internal