trace

NAME

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:

1   Trace all function calls to lfuns.

2   Trace all calls to "call_other".

4   Trace all function returns.

8   Print arguments at function calls and return values.

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

32  Enable trace in heart beat functions.

64  Trace calls to apply.

128 Show object name in tracing.

SEE ALSO

traceprefix(3)