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Postings from June 2007
On 6/16/07, Joshua ben Jore <twists@gmail.com> wrote: > I took chromatic's Runops::Trace and hacked it up so I could do code > coverage. I can now tell which code path is triggered by which inputs. > > Check this badness out. The punchline is the lists of equivalent > inputs. Roughly. Ops can return different things and I'm not paying > attention to the inputs - it's only the path traversed. Ok, so now here's a new version. It's less hacky. I figure a change of namespaces is in order. Whatever chromatic's newer and unpublished version did, this doesn't do quite the same thing. He called the callback all the time, period. I only call the tracing callback when requested and it's over a single code reference. I suppose I could emulate chromatic's code though. Dunno. I've got the tool I needed. The rest of you can also have it at http://diotalevi.isa-geek.net/~josh/cpan/Runops-Trace-0.03.tar.gz until it changes name and goes up on CPAN. Here's a nice example: Given the code in http://diotalevi.isa-geek.net/~josh/cpan/Runops-Trace-0.03/eg/is-even, I get back a md5sum of the code path for each input and can describe which inputs were identical. There's two sugared functions. One returns the md5sum of the code path and the other just returns the unique string. The latter is more interesting to look at but isn't needed for most work. I guess. A hash of md5sumed code paths vs inputs that trigger them: --- 48c92ccbd609ab8e22e4ec6fe3bb1983: - 0 - 2 - 4 - 6 - 8 - 10 61ddc137197f9145c3d10d13d98516e4: - 1 - 3 - 5 - 7 - 9 A hash of "readable" code paths vs the inputs that trigger them: --- nextstate=(0x81a3ac8) pushmark=(0x81a4118) padsv=(0x81ccb60) gv=(0x81b7200) entersub=(0x8144f10) nextstate=(0x81a3db8) aelemfast=(0x8141fd0) const=(0x8142318) modulo=(0x817b800) const=(0x81b6ef0) eq=(0x8145c28) cond_expr=(0x813be68) const=(0x81b6c80) leavesub=(0x81b70e0) leavesub=(0x81b5780): - 0 - 2 - 4 - 6 - 8 - 10 nextstate=(0x81a3ac8) pushmark=(0x81a4118) padsv=(0x81ccb60) gv=(0x81b7200) entersub=(0x8144f10) nextstate=(0x81a3db8) aelemfast=(0x8141fd0) const=(0x8142318) modulo=(0x817b800) const=(0x81b6ef0) eq=(0x8145c28) cond_expr=(0x813be68) const=(0x81b7198) leavesub=(0x81b70e0) leavesub=(0x81b5780): - 1 - 3 - 5 - 7 - 9 The base primitive is a function _do_trace( TRACE, CODE ). I guess I'll describe it more later. I've got to go now. JoshThread Previous | Thread Next