WM-CPROF(1) WM-CPROF(1)
NAME
wm/cprof - graphic coverage profiling of limbo programs
SYNOPSIS
wm/cprof [ -er ] [ -m modname ] ... [ cmd arg ... ]
DESCRIPTION
Wm/cprof is a graphical coverage profiling tool which shows
which lines of limbo source have not been executed. It can
accumulate results over a series of runs if so desired.
The -r options indicates that the profiling results should
be recorded. Any profiled dis file of the form <name>.dis
will have the raw profiling results stored in a file named
<name>.prf. If this file already existed before the run, the
results will be added to this file.
The -m option lists the module names which are to be pro-
filed. If none are given, all the modules loaded by the ker-
nel will be profiled. The name may be the actual name of the
module or its path name.
The -e option profiles the module that is loaded first in
any following command. In this case there is no need to give
a -m option as this is added automatically.
Any remaining arguments are assumed to specify a command and
set of arguments to the command. If this is the case,
wm/cprof will automatically start profiling, run the command
to completion and then stop profiling before optionally
recording the results and showing the profile statistics.
If no command is given to profile, then wm/cprof will show
the profile statistics from any existing recorded results in
.prf files instead.
Wm/cprof displays the profile statistics graphically. Code
that has not been executed is shown in white against a red
background. Code whose corresponding dis instructions have
not been wholly executed are shown in red against a white
background. Typically a line of code such as
x = !x;
might show only partial execution if x has changed value
from 1 to 0 but not vice-verse.
The top of the text window names the module along with any
modules before and after it in the list. If a module has
100% coverage this is stated as well. To help find unexe-
cuted code, use the find icon in the menu bar. To move to
the next or go back to any other profiled modules, use the
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WM-CPROF(1) WM-CPROF(1)
arrow icons in the menu bar. The last icon, the reload icon,
pops up a menu of profiled modules to choose from.
wm/cprof calls cprof to do the actual work.
EXAMPLE
To profile a particular command
wm/cprof /dis/math/sieve 100
To profile the same command but restrict attention to its own module (Partitions).
wm/cprof -m Sieve /dis/math/sieve 100
A shorter version of the above
wm/cprof -e /dis/math/sieve 100
Make 3 runs recording results as we go using cprof for simplicity
cprof -e -r /dis/math/sieve 100
cprof -e -r /dis/math/sieve 1000
cprof -e -r /dis/math/sieve 10000
Now look at the cumulative results graphically
wm/cprof -m /dis/math/sieve.dis
SOURCE
/appl/wm/cprof.b
SEE ALSO
prof(1), cprof(1), prof(2), prof(3)
BUGS
Wm/cprof cannot profile compiled limbo programs.
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