Refactor dmprof: split lib.Dump into lib.Dump and lib.DeepDump.

tools/deep_memory_profiler/lib/deep_dump.py

Index: tools/deep_memory_profiler/lib/deep_dump.py
diff --git a/tools/deep_memory_profiler/lib/dump.py b/tools/deep_memory_profiler/lib/deep_dump.py
similarity index 94%
copy from tools/deep_memory_profiler/lib/dump.py
copy to tools/deep_memory_profiler/lib/deep_dump.py
index 1fa4fc3b698860092dd7f36d432ecd0b03bbeefb..dc37ea0c7764d65f4daf26f22a90aa917172769d 100644
--- a/tools/deep_memory_profiler/lib/dump.py
+++ b/tools/deep_memory_profiler/lib/deep_dump.py
@@ -1,4 +1,4 @@
-# Copyright 2013 The Chromium Authors. All rights reserved.
+# Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
@@ -9,6 +9,7 @@ import os
 import re
 import time
 
+from lib.dump import Dump
 from lib.exceptions import EmptyDumpException, InvalidDumpException
 from lib.exceptions import ObsoleteDumpVersionException, ParsingException
 from lib.pageframe import PageFrame
@@ -44,7 +45,7 @@ DUMP_DEEP_5 = 'DUMP_DEEP_5'
 DUMP_DEEP_6 = 'DUMP_DEEP_6'
 
 
-class Dump(object):
+class DeepDump(Dump):
   """Represents a heap profile dump."""
 
   _PATH_PATTERN = re.compile(r'^(.*)\.([0-9]+)\.([0-9]+)\.heap$')
@@ -66,6 +67,7 @@ class Dump(object):
   _TIME_PATTERN_SECONDS = re.compile(r'^Time: ([0-9]+)$')
 
   def __init__(self, path, modified_time):
+    super(DeepDump, self).__init__()
     self._path = path
     matched = self._PATH_PATTERN.match(path)
     self._pid = int(matched.group(2))
@@ -407,33 +409,6 @@ class Dump(object):
     return True
 
 
-class DumpList(object):
-  """Represents a sequence of heap profile dumps.
-
-  Individual dumps are loaded into memory lazily as the sequence is accessed,
-  either while being iterated through or randomly accessed.  Loaded dumps are
-  not cached, meaning a newly loaded Dump object is returned every time an
-  element in the list is accessed.
-  """
-
-  def __init__(self, dump_path_list):
-    self._dump_path_list = dump_path_list
-
-  @staticmethod
-  def load(path_list):
-    return DumpList(path_list)
-
-  def __len__(self):
-    return len(self._dump_path_list)
-
-  def __iter__(self):
-    for dump in self._dump_path_list:
-      yield Dump.load(dump)
-
-  def __getitem__(self, index):
-    return Dump.load(self._dump_path_list[index])
-
-
 class ProcMapsEntryAttribute(ExclusiveRangeDict.RangeAttribute):
   """Represents an entry of /proc/maps in range_dict.ExclusiveRangeDict."""
   _DUMMY_ENTRY = procfs.ProcMapsEntry(