06-03-2010
calling pthread_self (on ubuntu), expensive?
Hi all,
Is anyone aware of what operations are involved when a call to pthread_self() is made, obtaining the unique thread ID on a Ubuntu system (or even any Linux flavour)?
Specifically, to retrieve the thread id, is there any locking required or atomic operations?
I'm building an application for multi-core systems (in C using pthreads) which needs to be scalable and I'm planning to call this function quite often, hence I need some idea how "expensive" it is to do so.
Any help much appreciated.
Thanks.
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