多进程与多线程的示例代码
import multiprocessing
import os
import sys
import threading
from time import sleep
def thread_demo(index):
while True:
print(f"thread_demo {index} pid={os.getpid()} thread_name={threading.current_thread().name}")
sleep(1)
def process_demo(index):
while True:
print(f"process_demo {index} pid={os.getpid()} thread_name={threading.current_thread().name}")
sleep(1)
def multi_thread(count):
for index in range(count):
thread = threading.Thread(target=thread_demo, args=[index])
thread.start()
sleep(1)
def multi_process(count):
for index in range(count):
process = multiprocessing.Process(target=process_demo, args=(index,))
process.start()
sleep(1)
if __name__ == '__main__':
process_count = int(sys.argv[1])
thread_count = int(sys.argv[2])
multi_process(process_count)
multi_thread(thread_count)
input()
进程状态
D uninterruptible sleep (usually IO)
R running or runnable (on run queue)
S interruptible sleep (waiting for an event to complete)
T stopped by job control signal
t stopped by debugger during the tracing
W paging (not valid since the 2.6.xx kernel)
X dead (should never be seen)
Z defunct ("zombie") process, terminated but not reaped by its parent
