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  1. import multiprocessing as mp
  2. import sys
  3. import time
  4.  
  5. num = mp.Value('d', 0.0, lock = True)
  6.  
  7.  
  8. def func1():
  9.     global num
  10.     print ('start func1')
  11.     #While num.value < 100000:
  12.     for x in range(1000):
  13.         num.value += 1
  14.         #print(num.value)
  15.     print ('end func1')
  16.  
  17. def func2():
  18.     global num
  19.     print ('start func2')
  20.     #while num.value > -10000:
  21.     for x in range(1000):
  22.         num.value -= 1
  23.         #print(num.value)
  24.     print ('end func2')
  25.  
  26. if __name__=='__main__':
  27.     ctx = mp.get_context('fork')
  28.     p1 =  ctx.Process(target=func1)
  29.     p1.start()
  30.     p2 = ctx.Process(target=func2)
  31.     p2.start()
  32.     p1.join()
  33.     p2.join()
  34.     sys.stdout.flush()
  35.     print(num.value)
Success #stdin #stdout 0.07s 54776KB
comments (?)
stdin
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Standard input is empty
stdout
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start func2
end func2
start func1
end func1
0.0
https://ideone.com/JoBXwZ
language:
Python 3 (python  3.12)
created:
8 years ago
visibility:
public

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