From Newsgroup: comp.lang.python

Hello guys,

I want to know how to kill a specific running thread (say by its id)

for now I run and kill a thread like the following:
# start thread
thread1 = threading.Thread(target= self.some_func(), args=( ...,), ) thread1.start()
# kill the thread
event_thread1 = threading.Event()
event_thread1.set()

I know that set() will kill all running threads, but if there was thread2
as well and I want to kill only thread1?

Thanks!
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From Newsgroup: comp.lang.python

marc nicole <mk1853387@gmail.com> wrote or quoted:

I want to know how to kill a specific running thread (say by its id)

Killing or stopping a thread can cause data corruption and
unpredictable behavior. It's better to use a more chill
approach like setting a flag to let the thread know when to
wrap it up and exit gracefully. If you really need to terminate
something abruptly, go for a process instead of a thread.


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From Newsgroup: comp.lang.python

On 25Sep2024 19:24, marc nicole <mk1853387@gmail.com> wrote:

I want to know how to kill a specific running thread (say by its id)

for now I run and kill a thread like the following:
# start thread
thread1 = threading.Thread(target= self.some_func(), args=( ...,), ) >thread1.start()
# kill the thread
event_thread1 = threading.Event()
event_thread1.set()

I know that set() will kill all running threads, but if there was thread2
as well and I want to kill only thread1?

No, `set()` doesn't kill a thread at all. It sets the `Event`, and each
thread must be checking that event regularly, and quitting if it becomes
set.

You just need a per-thred vent instead of a single Event for all the
threads.

Cheers,
Cameron Simpson <cs@cskk.id.au>
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From Newsgroup: comp.lang.python

How to create a per-thread event in Python 2.7?

On Wed, 25 Sept 2024, 22:47 Cameron Simpson via Python-list, < python-list@python.org> wrote:

On 25Sep2024 19:24, marc nicole <mk1853387@gmail.com> wrote:

I want to know how to kill a specific running thread (say by its id)

for now I run and kill a thread like the following:
# start thread
thread1 = threading.Thread(target= self.some_func(), args=( ...,), ) >thread1.start()
# kill the thread
event_thread1 = threading.Event()
event_thread1.set()

I know that set() will kill all running threads, but if there was thread2 >as well and I want to kill only thread1?

No, `set()` doesn't kill a thread at all. It sets the `Event`, and each thread must be checking that event regularly, and quitting if it becomes
set.

You just need a per-thred vent instead of a single Event for all the
threads.

Cheers,
Cameron Simpson <cs@cskk.id.au>
--
https://mail.python.org/mailman/listinfo/python-list

--- Synchronet 3.20a-Linux NewsLink 1.114

From Newsgroup: comp.lang.python

On 25Sep2024 22:56, marc nicole <mk1853387@gmail.com> wrote:

How to create a per-thread event in Python 2.7?

Every time you make a Thread, make an Event. Pass it to the thread
worker function and keep it to hand for your use outside the thread.
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From Newsgroup: comp.lang.python

That's one of the "disadvantages" of threads: you cannot safely stop a
thread. Of course you could try, but that's never a good idea. The
reason for this is that threads share memory. They might be holding
locks that, if killed, will never be unlocked. They might (partially)
modify the shared state observed by other threads in such a way that
it becomes unusable to other threads.
So... if you want to kill a thread, I'm sorry to say this: you will
have to bring down the whole process, there's really no other way, and
that's not Python-specific, this is just the design of threads.
On Wed, Sep 25, 2024 at 7:26 PM marc nicole via Python-list <python-list@python.org> wrote:

Hello guys,

I want to know how to kill a specific running thread (say by its id)

for now I run and kill a thread like the following:
# start thread
thread1 = threading.Thread(target= self.some_func(), args=( ...,), ) thread1.start()
# kill the thread
event_thread1 = threading.Event()
event_thread1.set()

I know that set() will kill all running threads, but if there was thread2
as well and I want to kill only thread1?

Thanks!
--
https://mail.python.org/mailman/listinfo/python-list

--- Synchronet 3.20a-Linux NewsLink 1.114