Mercurial > ~astiob > upreckon > hgweb

annotate unix.py @ 84:953a5baa406d

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Removed tag 2.00.0 with test group support
author Oleg Oshmyan <chortos@inbox.lv>
date Thu, 24 Feb 2011 00:29:32 +0000
parents 06356af50bf9
children 741ae3391b61
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
82
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1 # Copyright (c) 2010-2011 Chortos-2 <chortos@inbox.lv>
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2
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3 from __future__ import division, with_statement
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4 import sys
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5
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6 try:
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7 from compat import *
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8 import testcases # mutual import
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9 except ImportError:
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10 import __main__
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11 __main__.import_error(sys.exc_info()[1])
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12
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13 from __main__ import clock
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14 from subprocess import Popen
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15 import os, sys
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16
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17 try:
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18 from signal import SIGTERM, SIGKILL
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19 except ImportError:
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20 SIGTERM = 15
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21 SIGKILL = 9
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22
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23 __all__ = 'call', 'kill', 'terminate', 'pause'
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24
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25
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26 if not sys.stdin.isatty():
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27 pause = lambda: sys.stdin.read(1)
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28 catch_escape = False
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29 else:
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30 try:
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31 from select import select
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32 import termios, tty, atexit
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33 except ImportError:
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34 pause = None
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35 catch_escape = False
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36 else:
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37 catch_escape = True
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38 def cleanup(old=termios.tcgetattr(sys.stdin.fileno())):
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39 termios.tcsetattr(sys.stdin.fileno(), termios.TCSAFLUSH, old)
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40 atexit.register(cleanup)
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41 tty.setcbreak(sys.stdin.fileno())
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42 def pause():
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43 sys.stdin.read(1)
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44
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45 try:
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46 from signal import SIGCHLD, signal, SIG_DFL
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47 from select import select, error as SelectError
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48 from errno import EINTR
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49 from fcntl import fcntl, F_SETFD, F_GETFD
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50 try:
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51 import cPickle as pickle
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52 except ImportError:
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53 import pickle
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54 except ImportError:
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55 def call(*args, **kwargs):
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56 case = kwargs.pop('case')
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57 try:
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58 case.process = Popen(*args, **kwargs)
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59 except OSError:
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60 raise CannotStartTestee(sys.exc_info()[1])
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61 case.time_started = clock()
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62 if not case.maxtime:
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63 while True:
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64 exitcode, now = case.process.poll(), clock()
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65 if exitcode is not None:
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66 case.time_stopped = now
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67 break
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68 else:
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69 time.sleep(.001)
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70 else:
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71 time_end = case.time_started + case.maxtime
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72 while True:
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73 exitcode, now = case.process.poll(), clock()
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74 if exitcode is not None:
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75 case.time_stopped = now
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76 break
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77 elif now >= time_end:
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78 raise TimeLimitExceeded
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79 else:
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80 time.sleep(.001)
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81 else:
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82 try:
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83 from fcntl import FD_CLOEXEC
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84 except ImportError:
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85 FD_CLOEXEC = 1
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86
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87 try:
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88 from resource import getrusage, RUSAGE_SELF, RUSAGE_CHILDREN
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89 except ImportError:
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90 from time import clock as cpuclock
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91 getrusage = lambda who: None
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92 else:
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93 def cpuclock():
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94 rusage = getrusage(RUSAGE_SELF)
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95 return rusage.ru_utime + rusage.ru_stime
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96
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97 try:
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98 from resource import setrlimit
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99 try:
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100 from resource import RLIMIT_AS
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101 except ImportError:
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102 from resource import RLIMIT_VMEM
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103 except ImportError:
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104 setrlimit = None
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105
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106 # Make SIGCHLD interrupt sleep() and select()
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107 def bury_child(signum, frame):
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108 try:
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109 bury_child.case.time_stopped = clock()
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110 except Exception:
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111 pass
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112 signal(SIGCHLD, bury_child)
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113
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114 # If you want this to work portably, don't set any stdio argument to PIPE
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115 def call(*args, **kwargs):
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116 global last_rusage
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117 bury_child.case = case = kwargs.pop('case')
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118 read, write = os.pipe()
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119 fcntl(write, F_SETFD, fcntl(write, F_GETFD) | FD_CLOEXEC)
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120 def preexec_fn():
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121 os.close(read)
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122 if setrlimit and case.maxmemory:
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123 maxmemory = ceil(case.maxmemory * 1048576)
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124 setrlimit(RLIMIT_AS, (maxmemory, maxmemory))
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125 # I would also set a CPU time limit but I do not want the time
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126 # passing between the calls to fork and exec to be counted in
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127 os.write(write, pickle.dumps((clock(), cpuclock()), 1))
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128 kwargs['preexec_fn'] = preexec_fn
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129 old_rusage = getrusage(RUSAGE_CHILDREN)
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130 last_rusage = None
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131 try:
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132 case.process = Popen(*args, **kwargs)
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133 except OSError:
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134 os.close(read)
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135 raise testcases.CannotStartTestee(sys.exc_info()[1])
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136 finally:
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137 os.close(write)
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138 try:
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139 if not catch_escape:
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140 if case.maxwalltime:
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141 time.sleep(case.maxwalltime)
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142 if case.process.poll() is None:
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143 raise testcases.WallTimeLimitExceeded
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144 else:
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145 case.process.wait()
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146 else:
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147 if not case.maxwalltime:
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148 try:
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149 while case.process.poll() is None:
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150 if select((sys.stdin,), (), ())[0]:
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151 if sys.stdin.read(1) == '\33':
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152 raise testcases.CanceledByUser
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153 except SelectError:
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154 if sys.exc_info()[1].args[0] != EINTR:
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155 raise
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156 else:
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157 case.process.poll()
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158 else:
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159 time_end = clock() + case.maxwalltime
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160 try:
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161 while case.process.poll() is None:
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162 remaining = time_end - clock()
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163 if remaining > 0:
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164 if select((sys.stdin,), (), (), remaining)[0]:
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165 if sys.stdin.read(1) == '\33':
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166 raise testcases.CanceledByUser
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167 else:
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168 raise testcases.WallTimeLimitExceeded
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169 except SelectError:
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170 if sys.exc_info()[1].args[0] != EINTR:
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171 raise
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172 else:
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173 case.process.poll()
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174 finally:
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175 case.time_started, cpustart = pickle.loads(os.read(read, 512))
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176 os.close(read)
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177 del bury_child.case
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178 new_rusage = getrusage(RUSAGE_CHILDREN)
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179 if new_rusage and (case.maxcputime or not case.maxwalltime):
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180 case.time_started = cpustart
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181 case.time_stopped = new_rusage.ru_utime + new_rusage.ru_stime
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182 case.time_limit_string = case.cpu_time_limit_string
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183 if case.maxcputime and new_rusage:
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184 oldtime = old_rusage.ru_utime + old_rusage.ru_stime
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185 newtime = new_rusage.ru_utime + new_rusage.ru_stime
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186 if newtime - oldtime - cpustart > case.maxcputime:
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diff changeset
187 raise testcases.CPUTimeLimitExceeded
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diff changeset
188 if case.maxmemory:
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parents:
diff changeset
189 if sys.platform != 'darwin':
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diff changeset
190 maxrss = case.maxmemory * 1024
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diff changeset
191 else:
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diff changeset
192 maxrss = case.maxmemory * 1048576
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diff changeset
193 if last_rusage and last_rusage.ru_maxrss > maxrss:
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diff changeset
194 raise testcases.MemoryLimitExceeded
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diff changeset
195 elif (new_rusage and
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diff changeset
196 new_rusage.ru_maxrss > old_rusage.ru_maxrss and
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diff changeset
197 new_rusage.ru_maxrss > maxrss):
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diff changeset
198 raise testcases.MemoryLimitExceeded
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diff changeset
199
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200 # Emulate memory limits on platforms compatible with 4.3BSD but not XSI
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diff changeset
201 # I say 'emulate' because the OS will allow excessive memory usage
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diff changeset
202 # anyway; Upreckon will just treat the test case as not passed.
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diff changeset
203 # To do this, we not only require os.wait4 to be present but also
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parents:
diff changeset
204 # assume things about the implementation of subprocess.Popen.
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parents:
diff changeset
205 try:
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parents:
diff changeset
206 def waitpid_emu(pid, options, _wait4=os.wait4):
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parents:
diff changeset
207 global last_rusage
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parents:
diff changeset
208 pid, status, last_rusage = _wait4(pid, options)
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parents:
diff changeset
209 return pid, status
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parents:
diff changeset
210 _waitpid = os.waitpid
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parents:
diff changeset
211 os.waitpid = waitpid_emu
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parents:
diff changeset
212 try:
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diff changeset
213 defaults = Popen._internal_poll.__func__.__defaults__
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parents:
diff changeset
214 except AttributeError:
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parents:
diff changeset
215 # Python 2.5
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parents:
diff changeset
216 defaults = Popen._internal_poll.im_func.func_defaults
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parents:
diff changeset
217 i = defaults.index(_waitpid)
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parents:
diff changeset
218 defaults = defaults[:i] + (waitpid_emu,) + defaults[i+1:]
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parents:
diff changeset
219 try:
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diff changeset
220 Popen._internal_poll.__func__.__defaults__ = defaults
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parents:
diff changeset
221 except AttributeError:
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parents:
diff changeset
222 # Python 2.5 again
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diff changeset
223 Popen._internal_poll.im_func.func_defaults = defaults
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parents:
diff changeset
224 except (AttributeError, ValueError):
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225 pass
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parents:
diff changeset
226
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parents:
diff changeset
227
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diff changeset
228 def kill(process):
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parents:
diff changeset
229 try:
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diff changeset
230 process.kill()
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parents:
diff changeset
231 except AttributeError:
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parents:
diff changeset
232 os.kill(process.pid, SIGKILL)
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parents:
diff changeset
233
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parents:
diff changeset
234
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diff changeset
235 def terminate(process):
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parents:
diff changeset
236 try:
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parents:
diff changeset
237 process.terminate()
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parents:
diff changeset
238 except AttributeError:
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parents:
diff changeset
239 os.kill(process.pid, SIGTERM)