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
|
#!/usr/bin/env python
#
# __COPYRIGHT__
#
# Permission is hereby granted, free of charge, to any person obtaining
# a copy of this software and associated documentation files (the
# "Software"), to deal in the Software without restriction, including
# without limitation the rights to use, copy, modify, merge, publish,
# distribute, sublicense, and/or sell copies of the Software, and to
# permit persons to whom the Software is furnished to do so, subject to
# the following conditions:
#
# The above copyright notice and this permission notice shall be included
# in all copies or substantial portions of the Software.
#
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
# NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
# LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
# OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
# WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
#
__revision__ = "__FILE__ __REVISION__ __DATE__ __DEVELOPER__"
import TestSCons
import sys
import string
import re
import time
_python_ = TestSCons._python_
test = TestSCons.TestSCons()
test.write('sleep_cat.py', """\
import sys
import time
time.sleep(int(sys.argv[1]))
fp = open(sys.argv[2], 'wb')
for arg in sys.argv[3:]:
fp.write(open(arg, 'rb').read())
fp.close()
sys.exit(0)
""")
test.write('SConstruct', """
env = Environment(PYTHON = r'%(_python_)s',
SLEEP_CAT = r'sleep_cat.py',
CATCOM = '$PYTHON $SLEEP_CAT $SECONDS $TARGET $SOURCES',
SECONDS = ARGUMENTS.get('SLEEP', '0'))
f1 = env.Command('f1.out', 'f1.in', '$CATCOM')
f2 = env.Command('f2.out', 'f2.in', '$CATCOM')
f3 = env.Command('f3.out', 'f3.in', '$CATCOM')
f4 = env.Command('f4.out', 'f4.in', '$CATCOM')
env.Command('output', [f1, f2, f3, f4], '$CATCOM')
""" % locals())
test.write('f1.in', "f1.in\n")
test.write('f2.in', "f2.in\n")
test.write('f3.in', "f3.in\n")
test.write('f4.in', "f4.in\n")
def num(s, match):
return float(re.search(match, s).group(1))
def within_tolerance(expected, actual, tolerance):
return abs((expected-actual)/actual) <= tolerance
def get_total_time(stdout):
return num(stdout, r'Total build time: (\d+\.\d+) seconds')
def get_sconscript_time(stdout):
return num(stdout, r'Total SConscript file execution time: (\d+\.\d+) seconds')
def get_scons_time(stdout):
return num(stdout, r'Total SCons execution time: (\d+\.\d+) seconds')
def get_command_time(stdout):
return num(stdout, r'Total command execution time: (\d+\.\d+) seconds')
# Try to make our results a little more accurate and repeatable by
# measuring Python overhead executing a minimal file, and reading the
# scons.py script itself from disk so that it's already been cached.
test.write('pass.py', "pass\n")
test.read(test.program)
start_time = time.time()
test.run(program=TestSCons.python, arguments=test.workpath('pass.py'))
overhead = time.time() - start_time
start_time = time.time()
test.run(arguments = "-j1 --debug=time . SLEEP=0")
complete_time = time.time() - start_time
expected_total_time = complete_time - overhead
pattern = r'Command execution time: (\d+\.\d+) seconds'
times = map(float, re.findall(pattern, test.stdout()))
expected_command_time = reduce(lambda x, y: x + y, times, 0.0)
stdout = test.stdout()
total_time = get_total_time(stdout)
sconscript_time = get_sconscript_time(stdout)
scons_time = get_scons_time(stdout)
command_time = get_command_time(stdout)
failures = []
if not within_tolerance(expected_command_time, command_time, 0.01):
failures.append("""\
SCons -j1 reported a total command execution time of %(command_time)s,
but command execution times really totalled %(expected_command_time)s,
outside of the 1%% tolerance.
""" % locals())
added_times = sconscript_time+scons_time+command_time
if not within_tolerance(total_time, added_times, 0.01):
failures.append("""\
SCons -j1 reported a total build time of %(total_time)s,
but the various execution times actually totalled %(added_times)s,
outside of the 1%% tolerance.
""" % locals())
if not within_tolerance(total_time, expected_total_time, 0.15):
failures.append("""\
SCons -j1 reported total build time of %(total_time)s,
but the actual measured build time was %(expected_total_time)s
(end-to-end time of %(complete_time)s less Python overhead of %(overhead)s),
outside of the 15%% tolerance.
""" % locals())
if failures:
print string.join([test.stdout()] + failures, '\n')
test.fail_test(1)
test.run(arguments = "--debug=time . SLEEP=0")
command_time = get_command_time(test.stdout())
if command_time != 0.0:
print "Up-to-date run received non-zero command time of %s" % command_time
test.fail_test()
test.run(arguments = "-c")
test.run(arguments = "-j4 --debug=time . SLEEP=1")
stdout = test.stdout()
total_time = get_total_time(stdout)
sconscript_time = get_sconscript_time(stdout)
scons_time = get_scons_time(stdout)
command_time = get_command_time(stdout)
failures = []
added_times = sconscript_time+scons_time+command_time
if not within_tolerance(total_time, added_times, 0.01):
failures.append("""\
SCons -j4 reported a total build time of %(total_time)s,
but the various execution times actually totalled %(added_times)s,
outside of the 1%% tolerance.
""" % locals())
if failures:
print string.join([test.stdout()] + failures, '\n')
test.fail_test(1)
test.run(arguments = "-j4 --debug=time . SLEEP=1")
command_time = get_command_time(test.stdout())
if command_time != 0.0:
print "Up-to-date run received non-zero command time of %s" % command_time
test.fail_test()
test.pass_test()
|
