Check if current thread is main thread

Question

How can i check if the current thread is the main thread on linux? It looks like gettid() only returns an pid but it seems that linux does not guarantee the thread with main

Answer 1

What about using pthread_self()?.

This returns the thread_id of the calling thread. With this function, you can store the main thread id (when you know is main) and compare it later with other values returned from pthread_self() to identify if they are the main thread or another one.

Although I think is wiser to have well structured code. Something like functions to be executed in slave threads and other functions to be executed in the master thread. This is a better approach to this kind of problems.