ezyang’s blog

the arc of software bends towards understanding


This post was adapted from a post I made to the glasgow-haskell-users list. According to Control.Exception, the BlockedIndefinitelyOnMVar exception (and related exception BlockedIndefinitelyOnSTM) is thrown when “the thread is blocked on an MVar, but there are no other references to the MVar so it can't ever continue.” The description is actually reasonably precise, but it […]

  • July 27, 2011