multiprocessing

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Why sigprocmask is used to block SIGCHLD from delivering in the following code

Base on http://man7.org/tlpi/code/online/book/procexec/multi_SIGCHLD.c.html int main(int argc, char *arg开发者_如何学Pythonv[])[详细]

2023-03-22 01:46 分类：问答
Exception thrown in multiprocessing Pool not detected

It seems that when an exception is raised from a multiprocessing.Pool process, there is no stack trace or any other indication that it has failed. Example:[详细]

2023-03-21 11:39 分类：问答
How does parent process get the termination status through wait from a child process which calls _exit

I have read the following statement. The status argument given to _exit() defines the termination status of[详细]

2023-03-21 03:47 分类：问答
Python multiprocessing not deterministic (Manager)?

I am trying to share a dict via the Manager interface and it seems the results vary! Sometimes it is {1: 8, 2: 3, 3: 2, 4: 1} and other times {1: 6, 2: 3, 3: 2, 4: 1}, {1: 7, 2: 3, 3: 2, 4: 1}, etc. T[详细]

2023-03-21 00:22 分类：问答
Multiprocessing Queue in Python

I\'m trying to use a queue with the multiprocessing library in Python. After executing 开发者_JS百科the code below (the print statements work), but the processes do not quit after I call join on the Q[详细]

2023-03-20 08:02 分类：问答
multiprocessing > Manager() > RLock Error:

I\'ve got a collection of multiprocessing.Process objects in a list, and they all use the same instance of what I will call a \"process safe queue\" to communicate in a process-safe (thread-safe but w[详细]

2023-03-19 01:59 分类：问答
python multiprocessing status of worker

I have a Python-interface class to a big C++ library, which does some work for me (with big amounts of data). I can gracefully stop the work开发者_StackOverflow中文版er by sending it a signal, i.e. os[详细]

2023-03-18 21:25 分类：问答
what is the neat way to divide huge nested loops to 8(or more) processes using Python?

this time i\'m facing a \"design\" problem. Using Python, I have a implement a mathematical algorithm which uses 5 parameters. To find the best combination of these 5 parameters, i used 5-layer nested[详细]

2023-03-18 10:34 分类：问答
How do twisted and multiprocessing.Process create zombies?

In python, using twisted loopingcall, multipro开发者_JAVA技巧cessing.Process, and multiprocessing.Queue; is it possible to create a zombie process.And, if so, then how?A zombie is a process which has[详细]

2023-03-18 09:52 分类：问答
How to add contextual information to log lines from multiprocessing workers?

I have a pool of worker processes (using multiprocessing.Pool) and want to log from these to a single log file. I am aware of logging servers, syslog, etc. but they all seem to require some changes to[详细]

2023-03-18 02:31 分类：问答