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
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
|
import hashlib
import re
try:
import cPickle as pickle
except ImportError:
import pickle
bb.msg.note(1, bb.msg.domain.Cache, "Importing cPickle failed. Falling back to a very slow implementation.")
def init(d):
siggens = [obj for obj in globals().itervalues()
if type(obj) is type and issubclass(obj, SignatureGenerator)]
desired = bb.data.getVar("BB_SIGNATURE_HANDLER", d, True) or "noop"
for sg in siggens:
if desired == sg.name:
return sg(d)
break
else:
bb.error("Invalid signature generator '%s', using default 'noop' generator" % desired)
bb.error("Available generators: %s" % ", ".join(obj.name for obj in siggens))
return SignatureGenerator(d)
class SignatureGenerator(object):
"""
"""
name = "noop"
def __init__(self, data):
return
def finalise(self, fn, d):
return
class SignatureGeneratorBasic(SignatureGenerator):
"""
"""
name = "basic"
def __init__(self, data):
self.basehash = {}
self.taskhash = {}
self.taskdeps = {}
self.runtaskdeps = {}
self.gendeps = {}
self.lookupcache = {}
self.basewhitelist = (data.getVar("BB_HASHBASE_WHITELIST", True) or "").split()
self.taskwhitelist = data.getVar("BB_HASHTASK_WHITELIST", True) or None
if self.taskwhitelist:
self.twl = re.compile(self.taskwhitelist)
else:
self.twl = None
def _build_data(self, fn, d):
self.taskdeps[fn], self.gendeps[fn] = bb.data.generate_dependencies(d)
basehash = {}
lookupcache = {}
for task in self.taskdeps[fn]:
data = d.getVar(task, False)
lookupcache[task] = data
for dep in sorted(self.taskdeps[fn][task]):
if dep in self.basewhitelist:
continue
if dep in lookupcache:
var = lookupcache[dep]
else:
var = d.getVar(dep, False)
lookupcache[dep] = var
if var:
data = data + var
self.basehash[fn + "." + task] = hashlib.md5(data).hexdigest()
#bb.note("Hash for %s is %s" % (task, tashhash[task]))
self.lookupcache[fn] = lookupcache
def finalise(self, fn, d, variant):
if variant:
fn = "virtual:" + variant + ":" + fn
self._build_data(fn, d)
#Slow but can be useful for debugging mismatched basehashes
#for task in self.taskdeps[fn]:
# self.dump_sigtask(fn, task, d.getVar("STAMP", True), False)
for task in self.taskdeps[fn]:
d.setVar("BB_BASEHASH_task-%s" % task, self.basehash[fn + "." + task])
def get_taskhash(self, fn, task, deps, dataCache):
k = fn + "." + task
data = dataCache.basetaskhash[k]
self.runtaskdeps[k] = deps
for dep in sorted(deps):
if self.twl and self.twl.search(dataCache.pkg_fn[fn]):
#bb.note("Skipping %s" % dep)
continue
if dep not in self.taskhash:
bb.fatal("%s is not in taskhash, caller isn't calling in dependency order?", dep)
data = data + self.taskhash[dep]
h = hashlib.md5(data).hexdigest()
self.taskhash[k] = h
#d.setVar("BB_TASKHASH_task-%s" % task, taskhash[task])
return h
def dump_sigtask(self, fn, task, stampbase, runtime):
k = fn + "." + task
if runtime:
sigfile = stampbase + "." + task + ".sigdata" + "." + self.taskhash[k]
else:
sigfile = stampbase + "." + task + ".sigbasedata" + "." + self.basehash[k]
data = {}
data['basewhitelist'] = self.basewhitelist
data['taskdeps'] = self.taskdeps[fn][task]
data['basehash'] = self.basehash[k]
data['gendeps'] = {}
data['varvals'] = {}
data['varvals'][task] = self.lookupcache[fn][task]
for dep in self.taskdeps[fn][task]:
data['gendeps'][dep] = self.gendeps[fn][dep]
data['varvals'][dep] = self.lookupcache[fn][dep]
if runtime:
data['runtaskdeps'] = self.runtaskdeps[k]
data['runtaskhashes'] = {}
for dep in data['runtaskdeps']:
data['runtaskhashes'][dep] = self.taskhash[dep]
p = pickle.Pickler(file(sigfile, "wb"), -1)
p.dump(data)
def dump_sigs(self, dataCache):
for fn in self.taskdeps:
for task in self.taskdeps[fn]:
k = fn + "." + task
if k not in self.taskhash:
continue
if dataCache.basetaskhash[k] != self.basehash[k]:
bb.error("Bitbake's cached basehash does not match the one we just generated!")
bb.error("The mismatched hashes were %s and %s" % (dataCache.basetaskhash[k], self.basehash[k]))
self.dump_sigtask(fn, task, dataCache.stamp[fn], True)
def compare_sigfiles(a, b):
p1 = pickle.Unpickler(file(a, "rb"))
a_data = p1.load()
p2 = pickle.Unpickler(file(b, "rb"))
b_data = p2.load()
#print "Checking"
#print str(a_data)
#print str(b_data)
def dict_diff(a, b):
sa = set(a.keys())
sb = set(b.keys())
common = sa & sb
changed = set()
for i in common:
if a[i] != b[i]:
changed.add(i)
added = sa - sb
removed = sb - sa
return changed, added, removed
if a_data['basewhitelist'] != b_data['basewhitelist']:
print "basewhitelist changed from %s to %s" % (a_data['basewhitelist'], b_data['basewhitelist'])
if a_data['taskwhitelist'] != b_data['taskwhitelist']:
print "taskwhitelist changed from %s to %s" % (a_data['taskwhitelist'], b_data['taskwhitelist'])
if a_data['taskdeps'] != b_data['taskdeps']:
print "Task dependencies changed from %s to %s" % (sorted(a_data['taskdeps']), sorted(b_data['taskdeps']))
if a_data['basehash'] != b_data['basehash']:
print "basehash changed from %s to %s" % (a_data['basehash'], b_data['basehash'])
changed, added, removed = dict_diff(a_data['gendeps'], b_data['gendeps'])
if changed:
for dep in changed:
print "List of dependencies for variable %s changed from %s to %s" % (dep, a_data['gendeps'][dep], b_data['gendeps'][dep])
#if added:
# print "Dependency on variable %s was added (value %s)" % (dep, b_data['gendeps'][dep])
#if removed:
# print "Dependency on Variable %s was removed (value %s)" % (dep, a_data['gendeps'][dep])
changed, added, removed = dict_diff(a_data['varvals'], b_data['varvals'])
if changed:
for dep in changed:
print "Variable %s value changed from %s to %s" % (dep, a_data['varvals'][dep], b_data['varvals'][dep])
#if added:
# print "Dependency on variable %s was added (value %s)" % (dep, b_data['gendeps'][dep])
#if removed:
# print "Dependency on Variable %s was removed (value %s)" % (dep, a_data['gendeps'][dep])
if 'runtaskdeps' in a_data and 'runtaskdeps' in b_data and a_data['runtaskdeps'] != b_data['runtaskdeps']:
print "Tasks this task depends on changed from %s to %s" % (a_data['taskdeps'], b_data['taskdeps'])
if 'runtaskhashes' in a_data:
for dep in a_data['runtaskhashes']:
if a_data['runtaskhashes'][dep] != b_data['runtaskhashes'][dep]:
print "Hash for dependent task %s changed from %s to %s" % (dep, a_data['runtaskhashes'][dep], b_data['runtaskhashes'][dep])
|
