Hello all, In my design 3 threads are running. t1, t2,and t3. suppose thread t1 is blocked using flag. After sometime t2 enables it. now how do i come to know which thread enabled t1. thanking in advance Aravind -- Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss