text threading issues on the important questions semantics of fourth and execute so four could Avail in a previous video foreign so duplicate T1 T2 T3 so yellow threads Unique Systems like foreign Allah running process usually works as normal replace so it replaces the running process including Allah the next one is signal handy Linux systems foreign module so the error is so deliver the signal to the threat to which the signal applies foreign terminating a thread before it has finished foreign like you know request so thread cancellations state so state line and option only on the disabled so disabled canceled online but next issue so thread local storage so thread local storage you know it allows each thread to have its own copy of data then local storage local storage [Music] local storage similar to static data then TLS is unique to each thread that is foreign Okay so till a point but in a lightweight process path so it appears to be a virtual processor on which process can schedule user thread so in the thread no more other than the lwp then each ldwp is attached to a kernel thread so there will a diagram how many lwps to create WLW IP a great one is so scheduler activations provide up calls a communication mechanism from the kernel to the up call Handler so in the up call handling Library foreign foreign and then status is being executed so foreign [Music] data when compared with thread termination then yeah um threading issues thanks bye