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PyBitmessage/src/proofofwork.py

281 lines
9.2 KiB

#import shared
#import time
#from multiprocessing import Pool, cpu_count
import hashlib
from struct import unpack, pack
from subprocess import call
import sys
import time
from bmconfigparser import BMConfigParser
from debug import logger
import paths
import openclpow
import queues
import tr
import os
import ctypes
import state
bitmsglib = 'bitmsghash.so'
def _set_idle():
if 'linux' in sys.platform:
os.nice(20)
else:
try:
sys.getwindowsversion()
import win32api,win32process,win32con # @UnresolvedImport
pid = win32api.GetCurrentProcessId()
handle = win32api.OpenProcess(win32con.PROCESS_ALL_ACCESS, True, pid)
win32process.SetPriorityClass(handle, win32process.IDLE_PRIORITY_CLASS)
except:
#Windows 64-bit
pass
def _pool_worker(nonce, initialHash, target, pool_size):
_set_idle()
trialValue = float('inf')
while trialValue > target:
nonce += pool_size
trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + initialHash).digest()).digest()[0:8])
return [trialValue, nonce]
def _doSafePoW(target, initialHash):
logger.debug("Safe PoW start")
nonce = 0
trialValue = float('inf')
while trialValue > target and state.shutdown == 0:
nonce += 1
trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + initialHash).digest()).digest()[0:8])
if state.shutdown != 0:
raise StopIteration("Interrupted")
logger.debug("Safe PoW done")
return [trialValue, nonce]
def _doFastPoW(target, initialHash):
logger.debug("Fast PoW start")
from multiprocessing import Pool, cpu_count
try:
pool_size = cpu_count()
except:
pool_size = 4
try:
maxCores = BMConfigParser().getint('bitmessagesettings', 'maxcores')
except:
maxCores = 99999
if pool_size > maxCores:
pool_size = maxCores
pool = Pool(processes=pool_size)
result = []
for i in range(pool_size):
result.append(pool.apply_async(_pool_worker, args=(i, initialHash, target, pool_size)))
while True:
if state.shutdown > 0:
try:
pool.terminate()
pool.join()
except:
pass
raise StopIteration("Interrupted")
for i in range(pool_size):
if result[i].ready():
try:
result[i].successful()
except AssertionError:
pool.terminate()
pool.join()
raise StopIteration("Interrupted")
result = result[i].get()
pool.terminate()
pool.join()
logger.debug("Fast PoW done")
return result[0], result[1]
time.sleep(0.2)
def _doCPoW(target, initialHash):
h = initialHash
m = target
out_h = ctypes.pointer(ctypes.create_string_buffer(h, 64))
out_m = ctypes.c_ulonglong(m)
logger.debug("C PoW start")
nonce = bmpow(out_h, out_m)
trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + initialHash).digest()).digest()[0:8])
if state.shutdown != 0:
raise StopIteration("Interrupted")
logger.debug("C PoW done")
return [trialValue, nonce]
def _doGPUPoW(target, initialHash):
logger.debug("GPU PoW start")
nonce = openclpow.do_opencl_pow(initialHash.encode("hex"), target)
trialValue, = unpack('>Q',hashlib.sha512(hashlib.sha512(pack('>Q',nonce) + initialHash).digest()).digest()[0:8])
#print "{} - value {} < {}".format(nonce, trialValue, target)
if trialValue > target:
deviceNames = ", ".join(gpu.name for gpu in openclpow.enabledGpus)
queues.UISignalQueue.put(('updateStatusBar', (tr._translate("MainWindow",'Your GPU(s) did not calculate correctly, disabling OpenCL. Please report to the developers.'), 1)))
logger.error("Your GPUs (%s) did not calculate correctly, disabling OpenCL. Please report to the developers.", deviceNames)
openclpow.enabledGpus = []
raise Exception("GPU did not calculate correctly.")
if state.shutdown != 0:
raise StopIteration("Interrupted")
logger.debug("GPU PoW done")
return [trialValue, nonce]
def estimate(difficulty, format = False):
ret = difficulty / 10
if ret < 1:
ret = 1
if format:
out = str(int(ret)) + " seconds"
if ret > 60:
ret /= 60
out = str(int(ret)) + " minutes"
if ret > 60:
ret /= 60
out = str(int(ret)) + " hours"
if ret > 24:
ret /= 24
out = str(int(ret)) + " days"
if ret > 7:
out = str(int(ret)) + " weeks"
if ret > 31:
out = str(int(ret)) + " months"
if ret > 366:
ret /= 366
out = str(int(ret)) + " years"
else:
return ret
def getPowType():
if openclpow.openclEnabled():
return "OpenCL"
if bmpow:
return "C"
return "python"
def notifyBuild(tried=False):
if bmpow:
queues.UISignalQueue.put(('updateStatusBar', (tr._translate("proofofwork", "C PoW module built successfully."), 1)))
elif tried:
queues.UISignalQueue.put(('updateStatusBar', (tr._translate("proofofwork", "Failed to build C PoW module. Please build it manually."), 1)))
else:
queues.UISignalQueue.put(('updateStatusBar', (tr._translate("proofofwork", "C PoW module unavailable. Please build it."), 1)))
def buildCPoW():
if bmpow is not None:
return
if paths.frozen is not None:
notifyBuild(False)
return
if sys.platform in ["win32", "win64"]:
notifyBuild(False)
return
try:
if "bsd" in sys.platform:
# BSD make
call(["make", "-C", os.path.join(paths.codePath(), "bitmsghash"), '-f', 'Makefile.bsd'])
else:
# GNU make
call(["make", "-C", os.path.join(paths.codePath(), "bitmsghash")])
if os.path.exists(os.path.join(paths.codePath(), "bitmsghash", "bitmsghash.so")):
init()
notifyBuild(True)
else:
notifyBuild(True)
except:
notifyBuild(True)
def run(target, initialHash):
if state.shutdown != 0:
raise
target = int(target)
if openclpow.openclEnabled():
# trialvalue1, nonce1 = _doGPUPoW(target, initialHash)
# trialvalue, nonce = _doFastPoW(target, initialHash)
# print "GPU: %s, %s" % (trialvalue1, nonce1)
# print "Fast: %s, %s" % (trialvalue, nonce)
# return [trialvalue, nonce]
try:
return _doGPUPoW(target, initialHash)
except StopIteration:
raise
except:
pass # fallback
if bmpow:
try:
return _doCPoW(target, initialHash)
except StopIteration:
raise
except:
pass # fallback
if paths.frozen == "macosx_app" or not paths.frozen:
# on my (Peter Surda) Windows 10, Windows Defender
# does not like this and fights with PyBitmessage
# over CPU, resulting in very slow PoW
# added on 2015-11-29: multiprocesing.freeze_support() doesn't help
try:
return _doFastPoW(target, initialHash)
except StopIteration:
logger.error("Fast PoW got StopIteration")
raise
except:
logger.error("Fast PoW got exception:", exc_info=True)
pass #fallback
try:
return _doSafePoW(target, initialHash)
except StopIteration:
raise
except:
pass #fallback
# init
def init():
global bitmsglib, bso, bmpow
if "win32" == sys.platform:
if ctypes.sizeof(ctypes.c_voidp) == 4:
bitmsglib = 'bitmsghash32.dll'
else:
bitmsglib = 'bitmsghash64.dll'
try:
# MSVS
bso = ctypes.WinDLL(os.path.join(paths.codePath(), "bitmsghash", bitmsglib))
logger.info("Loaded C PoW DLL (stdcall) %s", bitmsglib)
bmpow = bso.BitmessagePOW
bmpow.restype = ctypes.c_ulonglong
_doCPoW(2**63, "")
logger.info("Successfully tested C PoW DLL (stdcall) %s", bitmsglib)
except:
logger.error("C PoW test fail.", exc_info=True)
try:
# MinGW
bso = ctypes.CDLL(os.path.join(paths.codePath(), "bitmsghash", bitmsglib))
logger.info("Loaded C PoW DLL (cdecl) %s", bitmsglib)
bmpow = bso.BitmessagePOW
bmpow.restype = ctypes.c_ulonglong
_doCPoW(2**63, "")
logger.info("Successfully tested C PoW DLL (cdecl) %s", bitmsglib)
except:
logger.error("C PoW test fail.", exc_info=True)
bso = None
else:
try:
bso = ctypes.CDLL(os.path.join(paths.codePath(), "bitmsghash", bitmsglib))
logger.info("Loaded C PoW DLL %s", bitmsglib)
except:
bso = None
if bso:
try:
bmpow = bso.BitmessagePOW
bmpow.restype = ctypes.c_ulonglong
except:
bmpow = None
else:
bmpow = None
init()
if bmpow is None:
buildCPoW()