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
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
|
#!/usr/bin/env python
import sys
import optparse
import re
import struct
__version__ = '0.1'
verbose = False
class ParseError(Exception):
pass
class MsvcDemangler:
# http://www.kegel.com/mangle.html
def __init__(self, symbol):
self._symbol = symbol
self._pos = 0
def lookahead(self):
return self._symbol[self._pos]
def consume(self):
ret = self.lookahead()
self._pos += 1
return ret
def match(self, c):
if self.lookahead() != c:
raise ParseError
self.consume()
def parse(self):
self.match('?')
name = self.parse_name()
qualifications = self.parse_qualifications()
return '::'.join(qualifications + [name])
def parse_name(self):
if self.lookahead() == '?':
return self.consume() + self.consume()
else:
name = self.parse_id()
self.match('@')
return name
def parse_qualifications(self):
qualifications = []
while self.lookahead() != '@':
name = self.parse_id()
qualifications.append(name)
self.match('@')
return qualifications
def parse_id(self):
s = ''
while True:
c = self.lookahead()
if c.isalnum() or c in '_':
s += c
self.consume()
else:
break
return s
def demangle(name):
if name.startswith('_'):
name = name[1:]
idx = name.rfind('@')
if idx != -1 and name[idx+1:].isdigit():
name = name[:idx]
return name
if name.startswith('?'):
demangler = MsvcDemangler(name)
return demangler.parse()
return name
return name
class Profile:
def __init__(self):
self.symbols = []
self.symbol_cache = {}
self.base_addr = None
self.functions = {}
self.last_stamp = 0
self.stamp_base = 0
def unwrap_stamp(self, stamp):
if stamp < self.last_stamp:
self.stamp_base += 1 << 32
self.last_stamp = stamp
return self.stamp_base + stamp
def read_map(self, mapfile):
# See http://msdn.microsoft.com/en-us/library/k7xkk3e2.aspx
last_addr = 0
last_name = 0
for line in file(mapfile, "rt"):
fields = line.split()
try:
section_offset, name, addr, type, lib_object = fields
except ValueError:
continue
if type != 'f':
continue
addr = int(addr, 16)
name = demangle(name)
if last_addr == addr:
# TODO: handle collapsed functions
#assert last_name == name
continue
self.symbols.append((addr, name))
last_addr = addr
last_name = name
# sort symbols
self.symbols.sort(key = lambda (addr, name): addr)
def lookup_addr(self, addr):
try:
return self.symbol_cache[addr]
except KeyError:
pass
tolerance = 4196
s, e = 0, len(self.symbols)
while s != e:
i = (s + e)//2
start_addr, name = self.symbols[i]
try:
end_addr, next_name = self.symbols[i + 1]
except IndexError:
end_addr = start_addr + tolerance
if addr < start_addr:
e = i
continue
if addr == end_addr:
return next_name
if addr > end_addr:
s = i
continue
return name
return "0x%08x" % addr
def lookup_symbol(self, name):
for symbol_addr, symbol_name in self.symbols:
if name == symbol_name:
return symbol_addr
return 0
def read_data(self, data):
# TODO: compute these automatically
caller_overhead = 672 - 2*144 # __debug_profile_reference2 - 2*__debug_profile_reference1
callee_overhead = 144 # __debug_profile_reference1
callee_overhead -= 48 # tolerance
caller_overhead = callee_overhead
fp = file(data, "rb")
entry_format = "II"
entry_size = struct.calcsize(entry_format)
stack = []
last_stamp = 0
delta = 0
while True:
entry = fp.read(entry_size)
if len(entry) < entry_size:
break
addr_exit, stamp = struct.unpack(entry_format, entry)
if addr_exit == 0 and stamp == 0:
break
addr = addr_exit & 0xfffffffe
exit = addr_exit & 0x00000001
if self.base_addr is None:
ref_addr = self.lookup_symbol('__debug_profile_reference2')
if ref_addr:
self.base_addr = addr - ref_addr
else:
self.base_addr = 0
#print hex(self.base_addr)
rel_addr = addr - self.base_addr
#print hex(addr - self.base_addr)
name = self.lookup_addr(rel_addr)
stamp = self.unwrap_stamp(stamp)
delta += stamp - last_stamp
if not exit:
if verbose >= 2:
print "%10u >> 0x%08x" % (stamp, addr)
if verbose:
print "%10u >> %s" % (stamp, name)
delta -= caller_overhead
stack.append((name, stamp, delta))
delta = 0
else:
if verbose >= 2:
print "%10u << 0x%08x" % (stamp, addr)
if len(stack):
self_time = delta - callee_overhead
entry_name, entry_stamp, delta = stack.pop()
if entry_name != name:
if verbose:
print "%10u << %s" % (stamp, name)
#assert entry_name == name
break
total_time = stamp - entry_stamp
self.functions[entry_name] = self.functions.get(entry_name, 0) + self_time
if verbose:
print "%10u << %s %+u" % (stamp, name, self_time)
else:
delta = 0
last_stamp = stamp
def write_report(self):
total = sum(self.functions.values())
results = self.functions.items()
results.sort(key = lambda (name, time): -time)
for name, time in results:
perc = float(time)/float(total)*100.0
print "%6.03f %s" % (perc, name)
def main():
parser = optparse.OptionParser(
usage="\n\t%prog [options] [file] ...",
version="%%prog %s" % __version__)
parser.add_option(
'-m', '--map', metavar='FILE',
type="string", dest="map",
help="map file")
parser.add_option(
'-b', '--base', metavar='FILE',
type="string", dest="base",
help="base addr")
parser.add_option(
'-v', '--verbose',
action="count",
dest="verbose", default=0,
help="verbose output")
(options, args) = parser.parse_args(sys.argv[1:])
global verbose
verbose = options.verbose
profile = Profile()
if options.base is not None:
profile.base_addr = int(options.base, 16)
if options.map is not None:
profile.read_map(options.map)
for arg in args:
profile.read_data(arg)
profile.write_report()
if __name__ == '__main__':
main()
|
