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Add in caching for the lengthy symbol sorting.

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Mike Auty
2018-08-23 17:29:16 +01:00
parent b74eb68c04
commit ee38c9c4fe
1 changed files with 4 additions and 1 deletions
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volatility/framework/interfaces/symbols.py
+4 -1
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@@ -79,6 +79,7 @@ class BaseSymbolTableInterface(validity.ValidityRoutines):
table_mapping = {}
self.table_mapping = self._check_type(table_mapping, dict)
self._native_types = self._check_type(native_types, NativeTableInterface)
self._sort_symbols = []
# ## Required Symbol functions
@@ -171,7 +172,9 @@ class BaseSymbolTableInterface(validity.ValidityRoutines):
"""Returns the name of all symbols in this table that live at a particular offset"""
if size < 0:
raise ValueError("Size must be strictly non-negative")
sort_symbols = sorted([(self.get_symbol(sn).address, sn) for sn in self.symbols])
if not self._sort_symbols:
self._sort_symbols = sorted([(self.get_symbol(sn).address, sn) for sn in self.symbols])
sort_symbols = self._sort_symbols
result = bisect.bisect_left(sort_symbols, (offset, ""))
while result < len(sort_symbols) and \
(sort_symbols[result][0] >= offset and sort_symbols[result][0] <= offset + size):