1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
|
# Local file checksum cache implementation
#
# Copyright (C) 2012 Intel Corporation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import glob
import operator
import os
import stat
import bb.utils
import logging
from bb.cache import MultiProcessCache
logger = logging.getLogger("BitBake.Cache")
try:
import cPickle as pickle
except ImportError:
import pickle
logger.info("Importing cPickle failed. "
"Falling back to a very slow implementation.")
# mtime cache (non-persistent)
# based upon the assumption that files do not change during bitbake run
class FileMtimeCache(object):
cache = {}
def cached_mtime(self, f):
if f not in self.cache:
self.cache[f] = os.stat(f)[stat.ST_MTIME]
return self.cache[f]
def cached_mtime_noerror(self, f):
if f not in self.cache:
try:
self.cache[f] = os.stat(f)[stat.ST_MTIME]
except OSError:
return 0
return self.cache[f]
def update_mtime(self, f):
self.cache[f] = os.stat(f)[stat.ST_MTIME]
return self.cache[f]
def clear(self):
self.cache.clear()
# Checksum + mtime cache (persistent)
class FileChecksumCache(MultiProcessCache):
cache_file_name = "local_file_checksum_cache.dat"
CACHE_VERSION = 1
def __init__(self):
self.mtime_cache = FileMtimeCache()
MultiProcessCache.__init__(self)
def get_checksum(self, f):
entry = self.cachedata[0].get(f)
cmtime = self.mtime_cache.cached_mtime(f)
if entry:
(mtime, hashval) = entry
if cmtime == mtime:
return hashval
else:
bb.debug(2, "file %s changed mtime, recompute checksum" % f)
hashval = bb.utils.md5_file(f)
self.cachedata_extras[0][f] = (cmtime, hashval)
return hashval
def merge_data(self, source, dest):
for h in source[0]:
if h in dest:
(smtime, _) = source[0][h]
(dmtime, _) = dest[0][h]
if smtime > dmtime:
dest[0][h] = source[0][h]
else:
dest[0][h] = source[0][h]
def get_checksums(self, filelist, pn):
"""Get checksums for a list of files"""
def checksum_file(f):
try:
checksum = self.get_checksum(f)
except OSError as e:
bb.warn("Unable to get checksum for %s SRC_URI entry %s: %s" % (pn, os.path.basename(f), e))
return None
return checksum
def checksum_dir(pth):
# Handle directories recursively
dirchecksums = []
for root, dirs, files in os.walk(pth):
for name in files:
fullpth = os.path.join(root, name)
checksum = checksum_file(fullpth)
if checksum:
dirchecksums.append((fullpth, checksum))
return dirchecksums
checksums = []
for pth in filelist.split():
exist = pth.split(":")[1]
if exist == "False":
continue
pth = pth.split(":")[0]
if '*' in pth:
# Handle globs
for f in glob.glob(pth):
if os.path.isdir(f):
checksums.extend(checksum_dir(f))
else:
checksum = checksum_file(f)
checksums.append((f, checksum))
elif os.path.isdir(pth):
checksums.extend(checksum_dir(pth))
else:
checksum = checksum_file(pth)
checksums.append((pth, checksum))
checksums.sort(key=operator.itemgetter(1))
return checksums
|
