145 lines
4.7 KiB
Python
145 lines
4.7 KiB
Python
#import shared
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#import time
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#from multiprocessing import Pool, cpu_count
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import hashlib
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from struct import unpack, pack
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import sys
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from shared import config, frozen, codePath
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import shared
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import openclpow
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import os
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import ctypes
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bitmsglib = 'bitmsghash.so'
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if "win32" == sys.platform:
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if ctypes.sizeof(ctypes.c_voidp) == 4:
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bitmsglib = 'bitmsghash32.dll'
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else:
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bitmsglib = 'bitmsghash64.dll'
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try:
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bso = ctypes.WinDLL(os.path.join(codePath(), "bitmsghash", bitmsglib))
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except:
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bso = None
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else:
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try:
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bso = ctypes.CDLL(os.path.join(codePath(), "bitmsghash", bitmsglib))
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except:
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bso = None
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if bso:
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try:
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bmpow = bso.BitmessagePOW
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bmpow.restype = ctypes.c_ulonglong
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except:
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bmpow = None
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else:
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bmpow = None
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def _set_idle():
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if 'linux' in sys.platform:
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import os
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os.nice(20) # @UndefinedVariable
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else:
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try:
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sys.getwindowsversion()
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import win32api,win32process,win32con # @UnresolvedImport
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pid = win32api.GetCurrentProcessId()
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handle = win32api.OpenProcess(win32con.PROCESS_ALL_ACCESS, True, pid)
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win32process.SetPriorityClass(handle, win32process.IDLE_PRIORITY_CLASS)
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except:
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#Windows 64-bit
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pass
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def _pool_worker(nonce, initialHash, target, pool_size):
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_set_idle()
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trialValue = float('inf')
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while trialValue > target:
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nonce += pool_size
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trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + initialHash).digest()).digest()[0:8])
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return [trialValue, nonce]
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def _doSafePoW(target, initialHash):
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print "Safe POW\n"
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nonce = 0
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trialValue = float('inf')
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while trialValue > target:
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nonce += 1
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trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + initialHash).digest()).digest()[0:8])
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return [trialValue, nonce]
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def _doFastPoW(target, initialHash):
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print "Fast POW\n"
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import time
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from multiprocessing import Pool, cpu_count
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try:
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pool_size = cpu_count()
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except:
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pool_size = 4
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try:
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maxCores = config.getint('bitmessagesettings', 'maxcores')
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except:
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maxCores = 99999
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if pool_size > maxCores:
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pool_size = maxCores
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pool = Pool(processes=pool_size)
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result = []
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for i in range(pool_size):
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result.append(pool.apply_async(_pool_worker, args = (i, initialHash, target, pool_size)))
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while True:
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if shared.shutdown >= 1:
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pool.terminate()
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while True:
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time.sleep(10) # Don't let this thread return here; it will return nothing and cause an exception in bitmessagemain.py
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return
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for i in range(pool_size):
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if result[i].ready():
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result = result[i].get()
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pool.terminate()
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pool.join() #Wait for the workers to exit...
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return result[0], result[1]
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time.sleep(0.2)
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def _doCPoW(target, initialHash):
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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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nonce = bmpow(out_h, out_m)
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trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + initialHash).digest()).digest()[0:8])
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print "C PoW done"
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return [trialValue, nonce]
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def _doGPUPoW(target, initialHash):
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print "GPU PoW start"
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nonce = openclpow.do_opencl_pow(initialHash.encode("hex"), target)
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trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + initialHash).digest()).digest()[0:8])
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#print "{} - value {} < {}".format(nonce, trialValue, target)
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print "GPU PoW done"
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return [trialValue, nonce]
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def run(target, initialHash):
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target = int(target)
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if shared.safeConfigGetBoolean('bitmessagesettings', 'opencl') and openclpow.has_opencl():
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# trialvalue1, nonce1 = _doGPUPoW(target, initialHash)
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# trialvalue, nonce = _doFastPoW(target, initialHash)
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# print "GPU: %s, %s" % (trialvalue1, nonce1)
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# print "Fast: %s, %s" % (trialvalue, nonce)
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# return [trialvalue, nonce]
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try:
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return _doGPUPoW(target, initialHash)
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except:
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pass # fallback
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if bmpow:
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try:
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return _doCPoW(target, initialHash)
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except:
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pass # fallback
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if frozen == "macosx_app" or not frozen:
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# on my (Peter Surda) Windows 10, Windows Defender
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# does not like this and fights with PyBitmessage
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# over CPU, resulting in very slow PoW
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try:
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return _doFastPoW(target, initialHash)
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except:
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pass #fallback
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return _doSafePoW(target, initialHash)
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