[M3devel] LogManager.EmptyLog FS.Status(nm) vs. FS.Status(logfn(nm))

[Jay K]

I know. But see here from 2001:

 

http://modula3.elegosoft.com/cgi-bin/cvsweb.cgi/cm3/m3-db/stable/src/LogManager.m3.diff?r1=1.1.1.1;r2=1.1.1.2



Something is wierd here, I agree. I think I somehow had the 1.1.1.2 version (odd), and if you look through all the other uses of TestFile, I think it is more correct.

 

It seems some of the 4.1/5.1 changes never made it from a branch to head??


 - Jay

 
> From: hosking at cs.purdue.edu
> Date: Fri, 15 Jan 2010 10:04:48 -0500
> To: jkrell at elego.de
> CC: m3commit at elegosoft.com
> Subject: Re: [M3commit] CVS Update: cm3
> 
> Here's the diff between 1.1 and 1.2, which you committed. You seem to have changed the meaning. I don't understand the change.
> 
> *** LogManager.m3.~1.1~ Thu Jan 14 13:56:42 2010
> --- LogManager.m3.~1.2~ Fri Jan 15 09:59:41 2010
> ***************
> *** 236,241 ****
> --- 236,242 ----
> 
> PROCEDURE EmptyLog (lm: Default; nm: Pathname.T): BOOLEAN
> RAISES {OSError.E} =
> + VAR log: TEXT;
> BEGIN
> IF NOT lm.recoverable(nm) THEN
> RAISE OSError.E(
> ***************
> *** 243,253 ****
> Atom.FromText(
> "no checkpointfile for log in " & nm)));
> END;
> ! IF TestFile(lm.logfn(nm)) THEN
> ! RETURN FS.Status(nm).size > 0
> ! ELSE
> ! RETURN TRUE
> ! END;
> END EmptyLog;
> 
> PROCEDURE Dispose (lm: Default; nm: Pathname.T) RAISES {OSError.E} =
> --- 244,251 ----
> Atom.FromText(
> "no checkpointfile for log in " & nm)));
> END;
> ! log := lm.logfn(nm);
> ! RETURN (NOT TestFile(log)) OR (FS.Status(log).size = 0L);
> END EmptyLog;
> 
> PROCEDURE Dispose (lm: Default; nm: Pathname.T) RAISES {OSError.E} =
> 
> 
> On 15 Jan 2010, at 13:03, Jay Krell wrote:
> 
> > CVSROOT: /usr/cvs
> > Changes by: jkrell at birch. 10/01/15 13:03:10
> > 
> > Modified files:
> > cm3/m3-db/stable/src/: LogManager.m3 
> > 
> > Log message:
> > something is broken in the history here: put my version back, there is a semantic difference as to which file path is passed to FS.Status and I didn't invent the 'obfuscated' form, though the history is indeed confusing (did somebody mention that cvs and cvsweb don't work well?)
> 
 		 	   		  
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