Kill Thread in Pthread Library

user_140934 0
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I use pthread_create(&thread1, &attrs, //... , //...); and need if some condition occured need to kill this thread how to kill this ?

pthreads posix multithreading c
5 Answers

First store the thread id

pthread_create(&thr, ...)

then later call

pthread_cancel(thr)

However, this not a recommended programming practice! It's better to use an inter-thread communication mechanism like semaphores or messages to communicate to the thread that it should stop execution.

Note that pthread_kill(...) does not actually terminate the receiving thread, but instead delivers a signal to it, and it depends on the signal and signal handlers what happens.

anttihuima_643760

I agree with Antti, better practice would be to implement some checkpoint(s) where the thread checks if it should terminate. These checkpoints can be implemented in a number of ways e.g.: a shared variable with lock or an event that the thread checks if it is set (the thread can opt to wait zero time).

user_582370

Take a look at the pthread_kill() function.

user_2269750 
pthread_exit(0)

This will kill the thread.

user_87189510
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