Keep track of script objects in a weak fixed array.

src/debug/debug.h

 // 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.
 
 #ifndef V8_DEBUG_DEBUG_H_
 #define V8_DEBUG_DEBUG_H_
 
 #include "src/allocation.h"
 #include "src/arguments.h"
 #include "src/assembler.h"
@@ skipping 168 matching lines @@
 
   Handle<DebugInfo> debug_info_;
   int pc_offset_;
   RelocInfo::Mode rmode_;
   intptr_t data_;
   int position_;
   int statement_position_;
 };
 
 
-// Cache of all script objects in the heap. When a script is added a weak handle
-// to it is created and that weak handle is stored in the cache. The weak handle
-// callback takes care of removing the script from the cache. The key used in
-// the cache is the script id.
-class ScriptCache {
- public:
-  explicit ScriptCache(Isolate* isolate);
-  ~ScriptCache();
-
-  // Add script to the cache.
-  void Add(Handle<Script> script);
-
-  // Return the scripts in the cache.
-  Handle<FixedArray> GetScripts() {
-    return WeakValueHashTable::GetWeakValues(table_);
-  }
-
- private:
-  Isolate* isolate_;
-  Handle<WeakValueHashTable> table_;
-};
-
-
 // Linked list holding debug info objects. The debug info objects are kept as
 // weak handles to avoid a debug info object to keep a function alive.
 class DebugInfoListNode {
  public:
   explicit DebugInfoListNode(DebugInfo* debug_info);
   ~DebugInfoListNode();
 
   DebugInfoListNode* next() { return next_; }
   void set_next(DebugInfoListNode* next) { next_ = next; }
   Handle<DebugInfo> debug_info() { return Handle<DebugInfo>(debug_info_); }
@@ skipping 393 matching lines @@
 
   bool is_active_;
   bool is_suppressed_;
   bool live_edit_enabled_;
   bool has_break_points_;
   bool break_disabled_;
   bool in_debug_event_listener_;
   bool break_on_exception_;
   bool break_on_uncaught_exception_;
 
-  ScriptCache* script_cache_;  // Cache of all scripts in the heap.
   DebugInfoListNode* debug_info_list_;  // List of active debug info objects.
 
   // Storage location for jump when exiting debug break calls.
   // Note that this address is not GC safe.  It should be computed immediately
   // before returning to the DebugBreakCallHelper.
   Address after_break_target_;
 
   // Per-thread data.
   class ThreadLocal {
    public:
@@ skipping 148 matching lines @@
                            int call_argc = -1);
 
   static void PatchDebugBreakSlot(Address pc, Handle<Code> code);
   static void ClearDebugBreakSlot(Address pc);
 };
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_DEBUG_DEBUG_H_