[Interpreter] Add support for cpu profiler logging.

tools/ll_prof.py

 #!/usr/bin/env python
 #
 # Copyright 2012 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
@@ skipping 347 matching lines @@
   _ARCH_TO_POINTER_TYPE_MAP = {
     "ia32": ctypes.c_uint32,
     "arm": ctypes.c_uint32,
     "mips": ctypes.c_uint32,
     "x64": ctypes.c_uint64,
     "arm64": ctypes.c_uint64
   }
 
   _CODE_CREATE_TAG = "C"
   _CODE_MOVE_TAG = "M"
-  _CODE_DELETE_TAG = "D"
   _SNAPSHOT_POSITION_TAG = "P"
   _CODE_MOVING_GC_TAG = "G"
 
   def __init__(self, log_name, code_map, snapshot_pos_to_name):
     self.log_file = open(log_name, "r")
     self.log = mmap.mmap(self.log_file.fileno(), 0, mmap.MAP_PRIVATE)
     self.log_pos = 0
     self.code_map = code_map
     self.snapshot_pos_to_name = snapshot_pos_to_name
     self.address_to_snapshot_name = {}
@@ skipping 73 matching lines @@
           continue
         assert code.start_address == old_start_address, \
             "Inexact move address %x for %s" % (old_start_address, code)
         self.code_map.Remove(code)
         size = code.end_address - code.start_address
         code.start_address = new_start_address
         code.end_address = new_start_address + size
         self.code_map.Add(code)
         continue
 
-      if tag == LogReader._CODE_DELETE_TAG:
-        event = self.code_delete_struct.from_buffer(self.log, self.log_pos)
-        self.log_pos += ctypes.sizeof(event)
-        old_start_address = event.address
-        code = self.code_map.Find(old_start_address)
-        if not code:
-          print >>sys.stderr, "Warning: Not found %x" % old_start_address
-          continue
-        assert code.start_address == old_start_address, \
-            "Inexact delete address %x for %s" % (old_start_address, code)
-        self.code_map.Remove(code)
-        continue
-
       if tag == LogReader._SNAPSHOT_POSITION_TAG:
         event = self.snapshot_position_struct.from_buffer(self.log,
                                                           self.log_pos)
         self.log_pos += ctypes.sizeof(event)
         start_address = event.address
         snapshot_pos = event.position
         if snapshot_pos in self.snapshot_pos_to_name:
           self.address_to_snapshot_name[start_address] = \
               self.snapshot_pos_to_name[snapshot_pos]
         continue
@@ skipping 575 matching lines @@
       PrintTicks(optimized_ticks, ticks, "ticks in optimized code")
       PrintTicks(generated_ticks, ticks, "ticks in other lazily compiled code")
       PrintTicks(v8_internal_ticks, ticks, "ticks in v8::internal::*")
       print "%10d total symbols" % len([c for c in code_map.AllCode()])
       print "%10d used symbols" % len([c for c in code_map.UsedCode()])
       print "%9.2fs library processing time" % mmap_time
       print "%9.2fs tick processing time" % sample_time
 
   log_reader.Dispose()
   trace_reader.Dispose()