Signals are checked whenever process returns from kernel mode to user mode. If there are any non-blocking pending signals, then they are handled at that time. See the ret_from_intr code. There is no restriction in writing Signal Handlers AFAIK. Signal Handlers are User-mode code, so the execution mode is changed to User-mode before execution. HTH Regds Ketan Anjaneyulu wrote: > Hi, > > I would like to know when the signal handler will be executed on > reception of a signal. > > > > What happens to the process (which installed the signal handler) > execution context???? > > > > Can anyone specify what all can be performed in a signal handler???? > > > > Thanks in advance. > > > > Regards, > > Anj > -- "Only the paranoid survives." --- Andy Grove -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/
