trace

       trace() - sets trace flags and returns the old ones.

SYNOPSIS

       int trace( int traceflags );

DESCRIPTION

       Sets  the  trace  flags  and  returns the old trace flags.
       When tracing is on a lot of information is printed  during
       execution.

       The trace bits are:

       Trace all function calls to lfuns.

       Trace all calls to "call_other".

       Trace all function returns.

       Print arguments at function calls and return values.

       Print  all executed stack machine instructions (produces a
                       lot of output!).

       Enable trace in heart beat functions.

       Trace calls to
                                                                       apply.

       Show object name in
                                                                                                                                       tracing.

SEE ALSO

       traceprefix(3)