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1
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import sys |
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2
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3
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if sys.version_info < (3, 3): |
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4
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sys.stdout.write("Python 3.3 required\n") |
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5
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sys.exit(1) |
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6
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7
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from multiprocessing import Process, Pipe |
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8
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from multiprocessing.connection import wait |
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9
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10
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11
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def chunk(seq, m): |
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12
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i, j, x = len(seq), 0, [] |
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for k in range(m): |
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14
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a, j = j, j + (i + k) // m |
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15
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x.append(seq[a:j]) |
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return x |
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class PipePackage(): |
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def __init__(self): |
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self._current_process_id = None |
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self._count_processes = 0 |
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24
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def setCurrentProcessId(self, current_process_id): |
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self._current_process_id = current_process_id |
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27
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def setCountProcess(self, count): |
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28
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self._count_processes = count |
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29
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30
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31
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class KeepedAliveProcessManager(): |
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32
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def __init__(self, nb_process, target): |
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self.processs = [] |
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self.target = target |
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35
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self.nb_process = nb_process |
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self.readers_pipes = [] |
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self.writers_pipes = [] |
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38
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39
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def _start(self, pipe_package): |
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40
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pipe_package.setCountProcess(self.nb_process) |
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41
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for i in range(self.nb_process): |
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local_read_pipe, local_write_pipe = Pipe(duplex=False) |
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process_read_pipe, process_write_pipe = Pipe(duplex=False) |
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self.readers_pipes.append(local_read_pipe) |
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self.writers_pipes.append(process_write_pipe) |
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46
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pipe_package.setCurrentProcessId(i) |
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47
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p = Process(target=run_keeped_process, |
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48
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args=(self.target, local_write_pipe, process_read_pipe, pipe_package)) |
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49
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p.start() |
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50
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self.processs.append(p) |
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51
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local_write_pipe.close() |
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52
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process_read_pipe.close() |
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53
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54
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def stop(self): |
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55
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for writer_pipe in self.writers_pipes: |
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56
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writer_pipe.send('stop') |
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57
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58
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def get_their_work(self, pipe_package): |
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59
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if not self.processs: |
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60
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self._start(pipe_package) |
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61
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else: |
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62
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for i in range(self.nb_process): |
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63
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# print('send things') |
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64
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pipe_package.setCurrentProcessId(i) |
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65
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self.writers_pipes[i].send(pipe_package) |
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66
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things_done_collection = [] |
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reader_useds = [] |
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68
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while self.readers_pipes: |
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69
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for r in wait(self.readers_pipes): |
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70
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try: |
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things_dones = r.recv() |
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except EOFError: |
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73
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reader_useds.append(r) |
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74
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self.readers_pipes.remove(r) |
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75
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else: |
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76
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reader_useds.append(r) |
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77
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self.readers_pipes.remove(r) |
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78
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for thing_done in things_dones: |
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things_done_collection.append(thing_done) |
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80
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81
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self.readers_pipes = reader_useds |
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82
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return things_done_collection |
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83
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84
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85
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def run_keeped_process(target, main_write_pipe, process_read_pipe, new_things): |
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86
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while new_things != 'stop': |
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87
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things_dones = target(new_things) |
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88
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main_write_pipe.send(things_dones) |
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89
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readers = [process_read_pipe] |
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90
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while readers: |
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91
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for r in wait(readers): |
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92
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try: |
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93
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new_things = r.recv() |
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94
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except EOFError: |
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95
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pass |
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96
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finally: |
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97
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readers.remove(r) |
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98
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99
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# if new_things != 'stop': |
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100
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# run_keeped_process(target, main_write_pipe, process_read_pipe, new_things) |
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101
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buxx /
synergine
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