我正在尝试在 python 3 中使用多线程。
加快某些代码的执行速度。
基本上我必须在可迭代上运行相同的函数
channels=range(1,8)
我已经制作了一个到目前为止我正在使用的工作示例。
我正在针对正常执行对其进行测试
我没有看到任何显着差异。
也许我做错了什么。
如果有一点帮助,我们将不胜感激
#!/usr/bin/env python
from threading import Thread
import matplotlib.pyplot as plt
import pdb
# from multiprocessing.dummy import Pool as ThreadPool
from multiprocessing.pool import ThreadPool
import threading
import argparse
import logging
from types import SimpleNamespace
import numpy as np
import time
import inspect
import logging
logger = logging.getLogger(__name__)
myself = lambda: inspect.stack()[1][3]
logger = logging.getLogger(__name__)
pool = ThreadPool(processes=8)
class ThreadWithReturnValue(Thread):
def __init__(self, group=None, target=None, name=None,
args=(), kwargs={}, Verbose=None):
Thread.__init__(self, group, target, name, args, kwargs)
self._return = None
def run(self):
print(type(self._target))
if self._target is not None:
self._return = self._target(*self._args,
**self._kwargs)
def join(self, *args):
Thread.join(self, *args)
return self._return
#--------
def map_kg1_efit(data,chan):
density = np.zeros(968)
for it in range(0,data.ntefit):
density[it] = it
for jj in range(0,data.ntkg1v):
density[it]=density[it]+jj
data.KG1LH_data.lid[chan] = density
# ----------------------------
def main():
data = SimpleNamespace()
data.KG1LH_data = SimpleNamespace()
data.ntkg1v = 30039
data.ntefit = 968
data.KG1LH_data.lid = [ [],[],[],[],[],[],[],[]]
channels=range(1,8)
# chan =1
for chan in channels:
logger.info('computing channel {}'.format(chan))
start_time = time.time()
twrv = ThreadWithReturnValue(target=map_kg1_efit, args=(data,chan))
# pdb.set_trace()
twrv.start()
twrv.join()
logger.info("--- {}s seconds ---".format((time.time() - start_time)))
plt.figure()
plt.plot(range(0,data.ntefit), data.KG1LH_data.lid[chan])
plt.show()
logger.info('computing channel {}'.format(chan))
start_time = time.time()
map_kg1_efit(data,chan)
logger.info("--- {}s seconds ---".format((time.time() - start_time)))
plt.figure()
plt.plot(range(0,data.ntefit), data.KG1LH_data.lid[chan])
plt.show()
logger.info("\n Finished.\n")
if __name__ == "__main__":
debug_map = {0: logging.ERROR,
1: logging.WARNING,
2: logging.INFO,
3: logging.DEBUG,
4: 5}
logging.basicConfig(level=debug_map[2])
logging.addLevelName(5, "DEBUG_PLUS")
logger = logging.getLogger(__name__)
# Call the main code
main()