annotate tests/killdaemons.py @ 27282:0bb8c405a7c7

tests/dumbhttp: use absolute_import
author Gregory Szorc <gregory.szorc@gmail.com>
date Sun, 06 Dec 2015 22:12:07 -0800
parents 123c99034cb6
children 05cb9c6f310e
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 #!/usr/bin/env python
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2
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3 import os, sys, time, errno, signal
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4
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5 if os.name =='nt':
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6 import ctypes
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7
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8 def _check(ret, expectederr=None):
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9 if ret == 0:
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10 winerrno = ctypes.GetLastError()
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11 if winerrno == expectederr:
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12 return True
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13 raise ctypes.WinError(winerrno)
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14
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15 def kill(pid, logfn, tryhard=True):
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16 logfn('# Killing daemon process %d' % pid)
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17 PROCESS_TERMINATE = 1
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18 PROCESS_QUERY_INFORMATION = 0x400
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19 SYNCHRONIZE = 0x00100000
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20 WAIT_OBJECT_0 = 0
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21 WAIT_TIMEOUT = 258
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22 handle = ctypes.windll.kernel32.OpenProcess(
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23 PROCESS_TERMINATE|SYNCHRONIZE|PROCESS_QUERY_INFORMATION,
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24 False, pid)
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25 if handle == 0:
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26 _check(0, 87) # err 87 when process not found
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27 return # process not found, already finished
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28 try:
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29 r = ctypes.windll.kernel32.WaitForSingleObject(handle, 100)
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30 if r == WAIT_OBJECT_0:
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31 pass # terminated, but process handle still available
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32 elif r == WAIT_TIMEOUT:
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33 _check(ctypes.windll.kernel32.TerminateProcess(handle, -1))
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34 else:
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35 _check(r)
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36
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37 # TODO?: forcefully kill when timeout
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38 # and ?shorter waiting time? when tryhard==True
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39 r = ctypes.windll.kernel32.WaitForSingleObject(handle, 100)
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40 # timeout = 100 ms
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41 if r == WAIT_OBJECT_0:
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42 pass # process is terminated
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43 elif r == WAIT_TIMEOUT:
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44 logfn('# Daemon process %d is stuck')
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45 else:
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46 _check(r) # any error
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47 except: #re-raises
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48 ctypes.windll.kernel32.CloseHandle(handle) # no _check, keep error
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49 raise
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50 _check(ctypes.windll.kernel32.CloseHandle(handle))
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51
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52 else:
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53 def kill(pid, logfn, tryhard=True):
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54 try:
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55 os.kill(pid, 0)
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56 logfn('# Killing daemon process %d' % pid)
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57 os.kill(pid, signal.SIGTERM)
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58 if tryhard:
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59 for i in range(10):
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60 time.sleep(0.05)
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61 os.kill(pid, 0)
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62 else:
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63 time.sleep(0.1)
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64 os.kill(pid, 0)
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65 logfn('# Daemon process %d is stuck - really killing it' % pid)
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66 os.kill(pid, signal.SIGKILL)
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67 except OSError as err:
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68 if err.errno != errno.ESRCH:
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69 raise
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70
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71 def killdaemons(pidfile, tryhard=True, remove=False, logfn=None):
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72 if not logfn:
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73 logfn = lambda s: s
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74 # Kill off any leftover daemon processes
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75 try:
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76 fp = open(pidfile)
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77 for line in fp:
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78 try:
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79 pid = int(line)
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80 except ValueError:
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81 continue
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82 kill(pid, logfn, tryhard)
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83 fp.close()
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84 if remove:
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85 os.unlink(pidfile)
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86 except IOError:
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87 pass
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88
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89 if __name__ == '__main__':
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90 if len(sys.argv) > 1:
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91 path, = sys.argv[1:]
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92 else:
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93 path = os.environ["DAEMON_PIDS"]
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94
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95 killdaemons(path)