https://www.cnblogs.com/si-lei/p/10748612.html
1. python in how to insert C language runtime?
(1) written in C language code:
#include <stdio.h>
void CFUN ()
{
printf ( "--------- I c language: ----------- \ the n-");
printf ( "the Hello world ! \ the n-");
printf (" ------------------------------ \ the n-");
}
(2) the c language compiler for the dynamic library:
Use the command: gcc cfun.c -fPIC -shared -o lib_cfun.so
Which - Shared parameter indicates generate dynamic link library.
-fPIC parameter indicates compiled as position-independent code, the code is compiled without this option if the location is relevant; so when dynamically loaded by way of a copy of the code to meet the different calls, but can not achieve a real sharing of code snippets purpose.
- O parameter indicates rename lib_cfun.so.
(3) write python code:
* Import ctypes from
from the Thread Threading Import
to load dynamic library #
lib = cdll.LoadLibrary ( "./ lib_cfun.so")
# create a child thread, let it perform c language function
t = Thread (target = lib.CFun)
t.start ()
# main thread
print ( "---------------- I'm a python language! ------------------ --- ")
Print (" ---------------- the Hello Python! --------------------- ")
(4) perform python code:
