Questions tagged [child-process]
For code that manages processes (child processes) spawned by other processes (parent processes).
103
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Run command in a child process
Inspired by this answer from SO, I try to find a version of fork()/exec()/wait() which:
starts a child process;
catches stdout, stderr and return code separately;
properly handles all possible errors ...
- 331
5
votes
2
answers
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RAII POSIX process created by fork
By analogy with std::thread, I've written an RAII POSIX process:
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- 205
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answer
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Bulk recompiling edits to files by running external processes with a pool of 4 workers using asyncio
I am bulk recompiling edits to a c-like language which uses an external compiler.exe. The compiler takes the file paths as arguments and does the processing, nothing needs to be synchronized simply ...
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Executing a Bash script from C++
I am trying to execute a Bash command, get the pid, read the (error) output and optionally pass input.
I am still quite new at C++ and I would like to know if this is a correct & safe ...
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1
answer
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Executing a multi-parameter external command to dump ArrangoDB from Python
I am aware there are several ways to deal with shell-executions in Python but I haven't really found the right one for me as it includes the following structure:
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nice utility in C
I implemented the nice linux command. How can I improve the program? In terms of optimization, error handling, bugs and possible undefined behaviors
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- 449
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1
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Spawning a child process that is accessible in global scope through use of eval()
So basically my question is what would be a better way to achieve my goal? The code below works fine but looks like it is extremely inefficient and could be achieved in a better way. The code ...
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display processes children
The following program uses a parent program to determine the PIDs of multiple child processes. A function is called to return them to a dynamic vector (with the children's pids, but also the elements ...
- 299
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data sent through a pipe from parent to child
I wrote a program that uses a pipe to send messages from a parent to a child.
Question: Is this the correct way I sent the messages? Could I have done otherwise? ...
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2
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Network utility tool
I wrote a little program in C based on some requirements:
Ping every IP from a file and check the result
Show, by network adapter, ONLY the IP, subnet, default gateway and DNS
Check the speed between ...
- 269
2
votes
0
answers
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Reading stdout and stderr of a sub process using Win32, Overlapped I/O
I'm writing C++ Windows code that will start a process, then read its stdout and stderr, separately, into buffers.
If I try to just read the streams one at a time it may hang if the child process is ...
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Execute command using `asyncio.create_subprocess_shell` and yield lines of stdout, stderr and finally the return code
My task is to run a subprocess using asyncio.create_subprocess_shell and yield the lines of output. I am using asyncio to avoid ...
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4
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answer
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Spawn a Linux subprocess without leaking FDs
I'm working on a library of shell utilities for Swift, and at the core of it is the need to spawn a subprocess.
For Linux, I came up with the following function to do the low-level work.
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3
votes
1
answer
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Run an external program and extract a pattern match along with the result file
The script takes two input files of protein sequences and runs an external program (installed in linux/MacOS). The result provides a text output file example output.. Identity percentage is extracted ...
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Spawning multiple child processes to preview Vue.js projects
Context:
I'm making a Codepen-like app but I want it to support sophisticated JS libraries/frameworks like Vue or Angular 2+ for example. I want to have a live preview of my snippet which updates in a ...
