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A fast subprocess library

Project description

WARNING: This library requires python 3.8

Fastprocess

A fast subprocess library

Usage

Spawning a process with fastprocess is very easy

In [1]: from fastprocess import FastProcess

In [2]: pid = FastProcess(['echo', 'hello', 'world'])

hello world
In [3]: pid.wait()
Out[3]: 0

You can redirect io using the stdin, stdout, and stderr options

In [4]: null = open('/dev/null', 'w')

In [5]: pid = FastProcess(['yes'], stdout=null)

In [6]: pid.terminate()

FastProcess methods

terminate():
Sends SIGTERM to the process

kill(sig):
Sends signal 'sig' to the process

wait():
Waits for the process to exit then returns the exit code

Performance

Here are the results of running ./benchmark/bench

---------------------------------------
10000 spawns with fork and exec...

real	0m2.214s
user	0m0.083s
sys	0m2.123s
---------------------------------------
10000 spawns with fastprocess...

real	0m3.163s
user	0m0.383s
sys	0m2.772s
---------------------------------------
10000 spawns with subprocess...

real	0m11.110s
user	0m6.773s
sys	0m7.772s
---------------------------------------

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