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 0m3.021s
user 0m0.151s
sys 0m1.420s
---------------------------------------------------
10000 spawns with fastprocess (posix_spawn)...
real 0m3.240s
user 0m1.746s
sys 0m0.265s
---------------------------------------------------
10000 spawns with old fastprocess (fork/exec)...
real 0m3.624s
user 0m0.863s
sys 0m2.738s
---------------------------------------------------
10000 spawns with subprocess...
real 0m10.873s
user 0m4.902s
sys 0m9.480s
---------------------------------------------------
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