/tags/c/c++/ Recent content in c/c++ on Shylock Hg Hugo -- gohugo.io en-us Mon, 05 Aug 2019 00:00:00 +0000 /post/2019/08/05/thread-local-storage/ Mon, 05 Aug 2019 00:00:00 +0000 /post/2019/08/05/thread-local-storage/ In c The key word __thread in gcc will specify the static storage symbol to each thread. So each thread will own one instance of the symbol belong to itself. Such as below: __thread int i; extern __thread FILE* f; // Just pointer, need create structure on each thread static __thread char* s; // Just pointer need create string on each thread int func(void) { static __thread int b; } The macro thread_local in threads.