mirror of https://github.com/python/cpython.git
73 lines
3.2 KiB
Plaintext
73 lines
3.2 KiB
Plaintext
Purify (tm) and Quantify (tm) are commercial software quality
|
|
assurance tools available from Pure Atria Corporation
|
|
<http://www.pureatria.com/>. Purify is essentially a memory access
|
|
verifier and leak detector; Quantify is a C level profiler. The rest
|
|
of this file assumes you generally know how to use Purify and
|
|
Quantify, and that you have installed valid licenses for these
|
|
products. If you don't have them installed, you can ignore the
|
|
following since it won't help you a bit!
|
|
|
|
You can easily build a Purify or Quantify instrumented version of the
|
|
Python interpreter by passing the LINKCC variable to the make command
|
|
at the top of the Python tree:
|
|
|
|
make LINKCC='purify gcc'
|
|
|
|
This assumes that the `purify' program is on your $PATH, and that you
|
|
are using gcc as your C compiler. Note that you can't Purify and
|
|
Quantify the interpreter (or any program) at the same time.
|
|
|
|
Now, just run the interpreter as you normally would. If you're
|
|
running it in place (i.e. not installed), you may find it helpful to
|
|
set your PYTHONPATH environment variable. E.g., in Bourne Shell, on a
|
|
Solaris 2.x machine:
|
|
|
|
% PYTHONPATH=./Lib:./Lib/sunos5:./Lib/tkinter:./Modules ./python
|
|
|
|
When running the regression test (make test), I have found it useful
|
|
to set my PURIFYOPTIONS environment variable using the following shell
|
|
function. Check out the Purify documentation for details:
|
|
|
|
p() {
|
|
chainlen='-chain-length=12'
|
|
ignoresigs='-ignore-signals="SIGHUP,SIGINT,SIGQUIT,SIGILL,SIGTRAP,SIGAVRT,SIGEMT,SIGFPE,SIGKILL,SIGBUS,SIGSEGV,SIGPIPE,SIGTERM,SIGUSR1,SIGUSR2,SIGPOLL,SIGXCPU,SIGXFSZ,SIGFREEZE,SIGTHAW,SIGRTMIN,SIGRTMAX"'
|
|
followchild='-follow-child-processes=yes'
|
|
threads='-max-threads=50'
|
|
export PURIFYOPTIONS="$chainlen $ignoresigs $followchild $threads"
|
|
echo $PURIFYOPTIONS
|
|
}
|
|
|
|
Note that you may want to crank -chain-length up even further. A
|
|
value of 20 should get you the entire stack up into the Python C code
|
|
in all situations.
|
|
|
|
With the regression test, you'll probably get a gabillion UMR errors,
|
|
and a few MLK errors. I think most of these can be safely suppressed
|
|
by putting the following in your .purify file:
|
|
|
|
suppress umr ...; "socketmodule.c"
|
|
suppress umr ...; time_strftime
|
|
suppress umr ...; "dbmmodule.c"
|
|
suppress umr ...; "gdbmmodule.c"
|
|
suppress umr ...; "grpmodule.c"
|
|
suppress umr ...; "nismodule.c"
|
|
suppress umr ...; "pwdmodule.c"
|
|
|
|
This will still leave you (currently) with a few UMR and MLK reports.
|
|
For now, don't worry about them. We'll be evaluating these as time
|
|
goes on, and correcting them as appropriate.
|
|
|
|
Using Purify or Quantify in this way will give you coarse grained
|
|
reports on the whole Python interpreter. You can actually get more
|
|
fine grained control over both by linking with the optional `pure'
|
|
module, which exports (most of) the Purify and Quantify C API's into
|
|
Python. To link in this module (it must be statically linked), edit
|
|
your Modules/Setup file for your site, and rebuild the interpreter.
|
|
You might want to check out the comments in the Modules/puremodule.c
|
|
file for some idiosyncrasies.
|
|
|
|
Using this module, you can actually profile or leak test a small
|
|
section of code, instead of the whole interpreter. Using this in
|
|
conjuction with pdb.py, dbx, or the profiler.py module really gives
|
|
you quite a bit of introspective power.
|