vsig(1fmli)

vsig -- synchronize a co-process with the controlling FMLI application

Synopsis

   vsig

Description

The vsig executable sends a SIGUSR2 signal to the controlling FMLI process. This signal/alarm causes FMLI to execute the FMLI built-in command checkworld which causes all posted objects with a reread descriptor evaluating to TRUE to be reread. vsig takes no arguments (see Character user interface programming in Character user interface programming).

Examples

The following is a segment of a shell program:

   echo "Sending this string to an FMLI process"
   vsig

The vsig executable flushes the output buffer before it sends the SIGUSR2 signal to make sure the string is actually in the pipe created by the cocreate function.

Notices

Because vsig synchronizes with FMLI, it should be used rather than kill to send a SIGUSR2 signal to FMLI.

References

coproc(1fmli), kill(1), kill(2), signal(2)