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[smlnj] Diff of /sml/branches/primop-branch-3/NOTES/HISTORY
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Diff of /sml/branches/primop-branch-3/NOTES/HISTORY

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revision 1136, Tue Mar 12 19:44:02 2002 UTC revision 1137, Tue Mar 12 22:28:55 2002 UTC
# Line 12  Line 12 
12  Tag: <post-commit CVS tag>  Tag: <post-commit CVS tag>
13  Description:  Description:
14  ----------------------------------------------------------------------  ----------------------------------------------------------------------
15    Name: Matthias Blume
16    Date: 2002/03/12 17:30:00 EST
17    Tag: blume-20020312-version110392
18    Description:
19    
20    Yet another version number bump (because of small changes to the
21    binfile format).  Version number is now 110.39.2.  NEW BOOTFILES!
22    
23    Changes:
24    
25      The new pid generation scheme described a few weeks ago was overly
26      complicated.  I implemented a new mechanism that is simpler and
27      provides a bit more "stability":  Once CM has seen a compilation
28      unit, it keeps its identity constant (as long as you do not delete
29      those crucial CM/GUID/* files).  This means that when you change
30      and interface, compiler, then go back to the old interface, and
31      compile again, you arrive at the original pid.
32    
33      There now also is a mechanism that instructs CM to use the plain
34      environment hash as a module's pid (effectively making its GUID
35      the empty string).  For this, "noguid" must be specified as an
36      option to the .sml file in question within its .cm file.
37      This is most useful for code that is being generated by tools such
38      as ml-nlffigen (because during development programmers tend to
39      erase the tool's entire output directory tree including CM's cached
40      GUIDs).  "noguid" is somewhat dangerous (since it can be used to locally
41      revert to the old, broken behavior of SML/NJ, but in specific cases
42      where there is no danger of interface confusion, its use is ok
43      (I think).
44    
45      ml-nlffigen by default generates "noguid" annotations.  They can be
46      turned off by specifying -guid in its command line.
47    
48    ----------------------------------------------------------------------
49  Name: Lal George  Name: Lal George
50  Date: 2002/03/12 12 14:42:36 EST  Date: 2002/03/12 12 14:42:36 EST
51  Tag: george-20020312-frequency-computation  Tag: george-20020312-frequency-computation

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