GDBJIT: Remove codes when they are garbage collected.

src/gdb-jit.cc

 // Copyright 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 2147 matching lines @@
   } else {
     JITCodeEntry* entry = static_cast<JITCodeEntry*>(e->value);
     UnregisterCodeEntry(entry);
     DestroyCodeEntry(entry);
   }
   e->value = NULL;
   GetEntries()->Remove(code, HashForCodeObject(code));
 }
 
 
+void GDBJITInterface::RemoveCodeRange(Address start, Address end) {
+  HashMap* entries = GetEntries();
+  Zone zone(Isolate::Current());
+  ZoneList<Code*> dead_codes(1, &zone);
+
+  for (HashMap::Entry* e = entries->Start(); e != NULL; e = entries->Next(e)) {
+    Code* code = reinterpret_cast<Code*>(e->key);
+    if (code->address() >= start && code->address() < end) {
+      dead_codes.Add(code, &zone);
+    }
+  }
+
+  for (int i = 0; i < dead_codes.length(); i++) {
+    RemoveCode(dead_codes.at(i));
+  }
+}
+
+
 void GDBJITInterface::RegisterDetailedLineInfo(Code* code,
                                                GDBJITLineInfo* line_info) {
   ScopedLock lock(mutex.Pointer());
   ASSERT(!IsLineInfoTagged(line_info));
   HashMap::Entry* e = GetEntries()->Lookup(code, HashForCodeObject(code), true);
   ASSERT(e->value == NULL);
   e->value = TagLineInfo(line_info);
 }
 
 
 } }  // namespace v8::internal
 #endif