.TH tcl_flow.d 1m   "$Date:: 2007-10-03 #$" "USER COMMANDS"
.SH NAME
tcl_flow.d - snoop Tcl execution showing procedure flow using DTrace.
.SH SYNOPSIS
.B tcl_flow.d

.SH DESCRIPTION
This traces activity from all Tcl processes on the system with DTrace
provider support (tcl8.4.16).

This watches Tcl method entries and returns, and indents child
method calls.
.SH OS
Any
.SH STABILITY
Evolving - uses the DTrace Tcl provider, which may change 
as additional features are introduced. Check Tcl/Readme
to see what version these scripts are based on.
.SH EXAMPLES
.TP
Default output,
# 
.B tcl_flow.d
.PP
.SH FIELDS
.TP
C
CPU-id
.TP
TIME(us)
Time since boot, us
.TP
PID
Process ID
.TP
CALL
Tcl command or procedure name
.SH LEGEND
.TP
\->
procedure entry
.TP
<\-
procedure return
.TP
>
command entry
.TP
<
command return
.SH WARNING
Watch the first column carefully, it prints the CPU-id. If it
changes, then it is very likely that the output has been shuffled.
.PP
.SH DOCUMENTATION
See the DTraceToolkit for further documentation under the 
Examples, Notes and Docs directories. The example files may be
especially useful as they aim to demonstrate how to interpret
the output.
.SH EXIT
tcl_flow.d will run until Ctrl-C is hit.
.SH AUTHOR
Brendan Gregg
[CA, USA]
.SH SEE ALSO
dtrace(1M)