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Segmentation fault with many go routines #13
Description
Running this program.
from offset import maintask, run, go, makechan
def gopher(left, right):
value = right.recv()
left.send(value + 1)
def starter(chan):
chan.send(1)
@maintask
def main():
leftmost = makechan()
right = leftmost
left = leftmost
for _ in range(10000):
right = makechan()
go(gopher, left, right)
left = right
go(starter, right)
print(leftmost.recv())
if __name__ == "__main__":
run()I get:
$ python gophers.offset.py
zsh: segmentation fault python gophers.offset.py
The output I expected was 10001.
Tested with
- Interpreters
Python 2.7.3 (87aa9de10f9ca71da9ab4a3d53e0ba176b67d086, Feb 03 2014, 13:03:18)[PyPy 2.2.1]Python 3.3.3 (default, Dec 22 2013, 19:33:55)
- offset library from github
- fibers 0.3.0
I don't know if this is caused by the offset library, fibers library or any other combination so I decided to start from here. :)
Activity
benoitc commentedon Feb 9, 2014
I reproduced it with python 3.4 as well. Reducing the number in the range make the problem disappear so I suspect a race condition.
I am about to replace the channels with an improved version, i will have a a look on that at the same time. Thanks for the test!
benoitc commentedon May 17, 2014
it will be fixed with the new scheduler.