Commit f0862ee1a31 by Pierre-Yves David

nodemap: keep track of the ondisk id of nodemap blocks

If we are to incrementally update the files, we need to keep some details about
the data we read.

Differential Revision:
parent 671f9479af0
......@@ -221,6 +221,11 @@ class Block(dict):
contains up to 16 entry indexed from 0 to 15"""
def __init__(self):
super(Block, self).__init__()
# If this block exist on disk, here is its ID
self.ondisk_id = None
def __iter__(self):
return iter(self.get(i) for i in range(16))
......@@ -323,8 +328,8 @@ def parse_data(data):
new_blocks = []
for i in range(0, len(data), S_BLOCK.size):
block = Block()
ondisk_id = len(block_map)
block_map[ondisk_id] = block
block.ondisk_id = len(block_map)
block_map[block.ondisk_id] = block
block_data = data[i : i + S_BLOCK.size]
values = S_BLOCK.unpack(block_data)
new_blocks.append((block, values))
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