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pstree 查看进程的线程数
import threading
import time
def run(i):
if i % 2 != 0:
time.sleep(10)
raise Exception("GG")
time.sleep(1000)
def main(count):
ts = []
for i in range(count):
ts.append(threading.Thread(target=run, args=(i,)))
for t in ts:
t.setDaemon(True)
t.start()
time.sleep(2000)
import click
@click.group()
def cli():
pass
@cli.command()
@click.option("--count", type=int)
def test(count):
main(count)
通过pstree 查看对应线程情况
pstree -p 31864
python3(31864)─┬─{python3}(31865)
└─{python3}(31866)
pstree -p 31864
python3(31864)───{python3}(31865)
gdb 查看进程运行状态
gdb
attach pid
info threads 查看所有线程
thread thread_id 选择线程调试
info stack 查看当前线程的栈信息
thread apply all bt 查看所有线程的栈信息
info stack
#0 0x00007f7226efba1d in __libc_recv (fd=3, buf=0x2bdbe00, len=8192, flags=0)
at ../sysdeps/unix/sysv/linux/recv.c:28
#1 0x00000000005bb8f6 in ?? ()
#2 0x00000000005bdfe9 in ?? ()
#3 0x00000000005be2e4 in ?? ()
#4 0x00000000005be378 in ?? ()
#5 0x00000000005030d5 in ?? ()
#6 0x0000000000506859 in _PyEval_EvalFrameDefault ()
#7 0x0000000000501945 in _PyFunction_FastCallDict ()
#8 0x0000000000591461 in ?? ()
#9 0x00000000005a337c in _PyObject_FastCallDict ()
#10 0x00000000005a3a5e in PyObject_CallMethodObjArgs ()
#11 0x00000000004c2e07 in ?? ()
#12 0x00000000004c2f3b in ?? ()
#13 0x00000000005dc390 in ?? ()
#14 0x00000000005dc705 in ?? ()
#15 0x0000000000502d6f in ?? ()
#16 0x0000000000506859 in _PyEval_EvalFrameDefault ()
#17 0x0000000000502209 in ?? ()
#18 0x0000000000502f3d in ?? ()
#19 0x0000000000506859 in _PyEval_EvalFrameDefault ()
#20 0x0000000000502209 in ?? ()
#21 0x0000000000502f3d in ?? ()
#22 0x0000000000506859 in _PyEval_EvalFrameDefault ()
#23 0x0000000000502209 in ?? ()
#24 0x0000000000502f3d in ?? ()