sys.is_prog()

Purpose:

sys.is_prog() indicates if the <asprog> arg is a currently running 4C program.

Usage:

ret = sys.is_prog(<asprog>);

Arguments:

asprog <asprog> - The 4C asprog name of the program

Returns:

0 - <asprog> is not currently running.

1 - <asprog> is currently running

Where Used:

sys.is_prog() can be called from anywhere. It is used in the 4C debugger programs for verification. It could also be used to prevent multiple copies of a program from being run.

Example:

The following example is from the 4C debugger program sys.dbg.fld. It is the aspefld PCL. It is used in order to verify that <asprog> exists before trying to display the fields in <asprog>.

if (sys.is_prog(asprog) == 0) {
    sys.err_msg("No Such Program:",asprog);
    sys.exit_field(sys.cur_field);
}
progname = sys.get_progname(asprog);

Description:

sys.is_prog() indicates if the <asprog> arg is a currently running 4C program.

Bugs/Features/Comments:

There is no way to determine if more than one copy of <asprog> is running. However, this could be added.

See Also: sys.get_progname()