50 lines
1.3 KiB
Python
50 lines
1.3 KiB
Python
import ctypes
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import hashlib
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from multiprocessing import current_process
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import os
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import signal
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from struct import unpack, pack
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from threading import current_thread
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shutdown = 0
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def signal_handler(signal, frame):
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global shutdown
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print "Got signal %i in %s/%s" % (signal, current_process().name, current_thread().name)
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if current_process().name != "MainProcess":
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raise StopIteration("Interrupted")
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if current_thread().name != "PyBitmessage":
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return
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shutdown = 1
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def _doCPoW(target, initialHash):
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# global shutdown
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h = initialHash
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m = target
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out_h = ctypes.pointer(ctypes.create_string_buffer(h, 64))
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out_m = ctypes.c_ulonglong(m)
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print "C PoW start"
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for c in range(0, 200000):
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print "Iter: %i" % (c)
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nonce = bmpow(out_h, out_m)
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if shutdown:
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break
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trialValue, = unpack('>Q', hashlib.sha512(hashlib.sha512(pack('>Q', nonce) + initialHash).digest()).digest()[0:8])
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if shutdown != 0:
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raise StopIteration("Interrupted")
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print "C PoW done"
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return [trialValue, nonce]
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signal.signal(signal.SIGINT, signal_handler)
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signal.signal(signal.SIGTERM, signal_handler)
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bso = ctypes.CDLL(os.path.join("bitmsghash", "bitmsghash.so"))
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bmpow = bso.BitmessagePOW
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bmpow.restype = ctypes.c_ulonglong
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_doCPoW(2**44, "")
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