How to view the thread id in python

How to view the thread id in python
I recently used a python multi-threaded program and found that it would consume all the CPUs. It is necessary to let python program run on one cpu ., however, threading is found. get_ident () returns a very large integer, which cannot be matched with the thread number.
You only need to obtain the system call number first.

 
 

  
  
#include  
 
  
  
#include  
 
  
  


  
  


  
  
int main(void)

  
  
{

  
  
printf("%d\n", SYS_gettid);

  
  
return 0;

  
  
}
 
 

Get 186

 
 

  
  
#!/usr/bin/env python

  
  


  
  
import threading

  
  
import os

  
  
import ctypes

  
  
def cycle_burner():

  
  
SYS_gettid = 186

  
  
libc = ctypes.cdll.LoadLibrary('libc.so.6')

  
  
tid = libc.syscall(SYS_gettid)

  
  
print tid

  
  
while True:

  
  
meh = 84908230489 % 323422

  
  


  
  
for i in range(3):

  
  
thread = threading.Thread(target=cycle_burner)

  
  
print "Starting a thread"

  
  
thread.start()
 
 

Run all OK