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Diff of /sml/trunk/HISTORY

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revision 1500, Fri May 28 21:44:42 2004 UTC revision 1650, Wed Oct 13 21:34:01 2004 UTC
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14    
15  ----------------------------------------------------------------------  ----------------------------------------------------------------------
16  Name: Matthias Blume (blume (at) tti - c (dot) org)  Name: Matthias Blume (blume (at) tti - c (dot) org)
17    Date: 2004/10/13 16:34:00 CDT
18    Tag: blume-20041013-tdp
19    Description:
20    
21    Some rationalization of names:
22    
23       structure BTrace -> structure TDPInstrument
24       etc.
25    
26    This is is preparation of using the original back-trace
27    instrumentation for other purposes.  "TDP" stands for
28    Trace/Debug/Profile.
29    
30    The control flag controlling whether instrumentation is on or off is now
31    registered under a different name, so instead of running sml as
32    
33     sml -Cinstrument.btrace-mode=true
34    
35    one has to say
36    
37     sml -Ctdp.instrument=true
38    
39    ----------------------------------------------------------------------
40    Name: Matthias Blume (blume (at) tti - c (dot) org)
41    Date: 2004/10/11 16:37:00 CDT
42    Tag: blume-20041011-regions
43    Description:
44    
45    Made some minor modifications to elabcore.sml to have source regions
46    be propagated more tightly -- resulting in better (i.e., smaller)
47    regions being reported in error- and debug messages.
48    
49    ----------------------------------------------------------------------
50    Name: Matthias Blume (blume (at) tti - c (dot) org)
51    Date: 2004/10/08 22:50:00 CDT
52    Tag: blume-20041008-cmkw
53    Description:
54    
55    Fixed handling of keywords in .cm files: After seeing "is" the lexer
56    treats subsequent occurrences of "group", "library", "source", "is",
57    "*", and "-" as ordinary identifiers rather than keywords.
58    
59    Most seriously, this fixes a problem with CM's "shell" tool.  The tool
60    is supposed to accept a tool argument called "source", but this did
61    not work because of the clash with the keyword.
62    
63    ----------------------------------------------------------------------
64    Name: Matthias Blume (blume (at) tti - c (dot) org)
65    Date: 2004/10/07 16:00:00 CDT
66    Tag: blume-20041007-cleanup
67    Description:
68    
69    Assorted cleanup work:
70    
71      - got rid of intstrmap in favor of using the library's
72        hash table implementation
73      - threw out most of the pathnames stuff, as it was not used anyway
74      - simplified tokentable implementation
75      - fixed some minor spelling errors
76    
77    ----------------------------------------------------------------------
78    Name: Matthias Blume (blume (at) tti - c (dot) org)
79    Date: 2004/10/06 15:15:15 CDT
80    Tag: blume-20041006-handler
81    Description:
82    
83    Cleaned up the absyn to reflect the invariant that HANDLE always
84    carries a FNexp as part of the type definition.  This eliminates some
85    superfluous sanity checks at runtime down the road.
86    
87    Some minor cleanup of the btrace code.
88    
89    ----------------------------------------------------------------------
90    Name: Matthias Blume (blume (at) tti - c (dot) org)
91    Date: 2004/10/01 10:20:30 CDT
92    Tag: blume-20041001-slave
93    Description:
94    
95    Added hack to make slave mode work in the presence of the version
96    tool.  (Still, since the master does two passes over the code for
97    CMB.make, the release number gets bumped twice when slaves are
98    attached.  I don't know if this is worth fixing...)
99    
100    ----------------------------------------------------------------------
101    Name: Matthias Blume (blume (at) tti - c (dot) org)
102    Date: 2004/09/30 10:55:00 CDT
103    Tag: blume-20040930-version
104    Description:
105    
106    * Moved the "version" magic into its own little library under
107    src/system/smlnj/internal.  This avoids expensive reconstruction
108    of a stable src/compiler/core.cm.
109    
110    * At the same time, structure CompilerVersion is now known as structure
111    SMLNJVersion.
112    
113    * Arranged for the version tool to NOT kick in when rebuilding the system
114      (makeml -rebuild, fixpt).  Otherwise one would never reach a fixpoint.
115      Also, loading the versiontool does not work when rebuilding the system
116      because CM is not properly initialized at that time.
117    
118    ----------------------------------------------------------------------
119    Name: Matthias Blume (blume (at) tti - c (dot) org)
120    Date: 2004/09/29 14:00:00 CDT
121    Tag: blume-20040929-autoversion
122    Description:
123    
124    Implemented some CM magic to have
125        file src/compiler/TopLevel/main/version.sml
126    generated automagically.
127    The version is taken from two files: config/version and config/release.
128    The first is expected to contain a two-part version number such as 110.49.
129    The second should contain a single number, but it may be missing.
130    
131    If the environment variable VERSIONTOOL_BUMP_RELEASE is defined at the
132    time the version tool is loaded (which is the first time you say CMB.make),
133    then the tool will increment the value stored in config/release every
134    time CMB.make is invoked.
135    
136    The binfile format is now insensitive to anything beyond the first
137    two components of a version number, so bumping the release does not render
138    binfiles incompatible.  Auto-bumping can be used to keep track of versions
139    during development without invalidating existing binfiles.
140    
141    In any case, every CMB.make updates the date information in version.sml.
142    (This is the date that is printed in the banner.)
143    
144    ----------------------------------------------------------------------
145    Name: Matthias Blume (blume (at) tti - c (dot) org)
146    Date: 2004/09/28 10:53:00 CDT
147    Tag: blume-20040928-controls
148    Description:
149    
150    Some cleanup of the controls code.
151    
152    ----------------------------------------------------------------------
153    Name: Matthias Blume (blume (at) tti - c (dot) org)
154    Date: 2004/09/27 22:08:00 CDT
155    Tag: blume-20040927-controls
156    Description:
157    
158    Added two pieces of functionality to the Controls interface:
159    
160    1.   val save'restore: 'a control -> unit -> unit
161    
162       grabs the current value of the control in stage 1 and restores it
163       in stage 2.
164    
165    2.   val set' : 'a control * 'a -> unit -> unit
166    
167       stores the given value into the control in stage 2 (i.e., delayed)
168       but does all error checking in stage 1.
169       (This is for string controls that need to do parse their argument --
170        something that might fail.  In some cases, notably in CM, one
171        already knows the intended argument but wants to delay the actual
172        assignment until a time when error recovery would be more difficult.)
173    
174    Changed the handling of controls in tool arguments to classes "sml" and
175    "lazysml":
176       - use Controls.save'restore as a more robust way of restoring the
177         old value (in particular: without having to re-parse the string)
178       - use controls to handle the "overload" keyword in the init group
179         (I believe this change actually fixes a long-standing obscure bug.)
180    
181    ----------------------------------------------------------------------
182    Name: Matthias Blume (blume (at) tti - c (dot) org)
183    Date: 2004/09/27 17:00:00 CDT
184    Tag: blume-20040927-lazysml
185    Description:
186    
187    Added a new tool class called "lazysml" to CM's tool chest.  The only
188    difference to "sml" is that compilation is done with Control.lazysml
189    set to true.  A source of class "lazysml" is automatically recognized
190    by a file name suffix of ".lml".
191    
192    In addition to the above feature, the original class "sml" now also
193    supports a tool argument "lazy" which has the same effect.  As a
194    result, the following three lines are equivalent:
195    
196        foo.sml : lazysml
197        foo.sml : sml (lazy)
198        foo.sml (lazy)
199    
200    The setting goes into effect both during parsing and during
201    compilation.  The original setting is restored right after parsing and
202    after compilation, respectively.
203    
204    In addition to all the above, there is also a general mechanism to set
205    ANY of the "controls" that are available at the command line via
206    "-C..." on a per-sml-file basis.  The same rules that apply for "lazy"
207    apply as well. (In fact, "lazy" is implemented as a special case of
208    the general mechanism.)
209    
210    The .cm file syntax uses a new keyword tool argument called "with".
211    There are several ways of indicating the desired settings:
212    
213        foo.sml (with:parser.quotations=true)
214        foo.sml (with:(name:parser.quotations value:true))
215        foo.sml (with:(name:name1 value:value1 name:name2 value:value2 ...))
216        foo.sml (with:(name1=value1 name2=value2 ...))
217        foo.sml (with:(name1=value1 name:name2 value:value2 name3=value3 ...))
218    
219        etc.
220    
221    Another possible abbreviation is to leave out the =v or value:v part
222    if the name refers to a boolean control (in which case the value is
223    taken to be true).  Thus, one could get lazy sml also by saying:
224    
225        foo.sml (with:parser.lazy-keyword=true)
226        foo.sml (with:parser.lazy-keyword)
227        foo.sml (with:(name:parser.lazy-keyword value:true))
228        foo.sml (with:(name:parser.lazy-keyword))
229    
230    ----------------------------------------------------------------------
231    Name: Matthias Blume (blume (at) tti - c (dot) org)
232    Date: 2004/09/24 16:22:00 CDT
233    Tag: blume-20040924-ppc-long-branch
234    Description:
235    
236    Turned message about "emiting long form of branch" off by default.
237    Added a control flag to turn it back on when desired.
238    
239    ----------------------------------------------------------------------
240    Name: Matthias Blume (blume (at) tti - c (dot) org)
241    Date: 2004/09/24 16:05:00 CDT
242    Tag: blume-20040924-rounding
243    Description:
244    
245    Applied patch for setting rounding modes under Mac OS X.  Thanks to
246    Melissa O'Neill for providing the code!
247    
248    ----------------------------------------------------------------------
249    Name: Matthias Blume (blume (at) tti - c (dot) org)
250    Date: 2004/09/23 17:30:00 CDT
251    Tag: blume-20040923-envvars
252    Description:
253    
254    1. Changed definition of type ControlRegistry.registry_tree to
255       include control_info (i.e., the name of the controlling environment
256       variable).
257    
258    2. Added command-line flags -e and -E to print the names of environment
259       variables that can be used to control internal settings.
260       (This uses the new API mentioned in 1.)
261    
262    ----------------------------------------------------------------------
263    Name: Matthias Blume (blume (at) tti - c (dot) org)
264    Date: 2004/09/13 16:50:00 CDT
265    Tag: Release_110_49
266    Description:
267    
268    New working version (110.49).  NEW BOOTFILES!
269    
270    ----------------------------------------------------------------------
271    Name: Matthias Blume
272    Date: 2004/09/13 16:20:00 CDT
273    Tag: blume-20040913-config-mlrisc
274    Description:
275    
276    Put target "mlrisc" back into the default list.
277    (There is no harm in having it, and some users have expressed their
278    wish to have "mlrisc" included by default.)
279    
280    ----------------------------------------------------------------------
281    Name: John Reppy
282    Date: 2004/09/13
283    Tag: jhr-20040913-signals
284    Description:
285    
286    Fixed the signal masking code to properly nest mask/unmask operations
287    on a per-signal basis.
288    
289    ----------------------------------------------------------------------
290    Name: Matthias Blume (blume (at) tti - c (dot) org)
291    Date: 2004/09/08 13:20:00 CDT
292    Tag: blume-20040908-heap-magic
293    Description:
294    
295    Bumped the heap macig number to 0x09082004 to account for the changed
296    layout of the ML frame under MacOS X.
297    
298    ----------------------------------------------------------------------
299    Name: Allen Leung (leunga (at) reservoir (dot) com)
300    Date: 2004/09/03 11:26:00 EST
301    Tag: leunga-20040903-cygwin-install
302    Description:
303    
304       Added a patch to _arch-n-opsys to enable the Cygwin runtime.
305    The Cygwin runtime is turned on by setting the environment
306    variable SMLNJ_CYGWIN_RUNTIME to 1.
307    
308    ----------------------------------------------------------------------
309    Name: Matthias Blume (blume (at) tti - c (dot) org)
310    Date: 2004/08/31 17:15:00 CDT
311    Tag: blume-20040831-core
312    Description:
313    
314    Added some exports to src/compiler/core.cm upon request by J. Joemann.
315    
316    ----------------------------------------------------------------------
317    Name: Matthias Blume (blume (at) tti - c (dot) org)
318    Date: 2004/08/30 17:55:00 CDT
319    Tag: blume-20040830-installer
320    Description:
321    
322    Upon request by Johannes Joemann:
323    
324    - improved ML code of installer to fall back to coping when renaming
325      fails (i.e., when source and target are on different file systems);
326      the code compiles but has yet to be tested in anger
327    - removed mlrisc from list of default targets (config/targets)
328    
329    ----------------------------------------------------------------------
330    Name: Matthias Blume (blume (at) tti - c (dot) org)
331    Date: 2004/08/27 17:20:00 CDT
332    Tag: blume-20040827-ptreql
333    Description:
334    
335    Added ptreql primop to structure InlineT (upon request from Larry
336    Paulson).
337    
338    ----------------------------------------------------------------------
339    Name: Allen Leung (leunga (at) reservoir (dot) com)
340    Date: 2004/08/15 21:21:00 EST
341    Tag: leunga-110_48-udgraph
342    Description:
343    
344    Another bug fix from Carl Hauser:
345    
346    diff /net/niflab/smlnj48/src/MLRISC/graphs/udgraph.sml udgraph.sml
347    > 48c48
348    > <              | rmv((e as (k,_))::es,L) = rmv(es,if k = i then es else
349    > e::L)
350    > ---
351    > >              | rmv((e as (k,_))::es,L) = rmv(es,if k = i then L else e::L)
352    > Without this, any deletion of an edge in an undirected graph does severe
353    > violence to the graph.
354    
355    ----------------------------------------------------------------------
356    Name: Allen Leung (leunga (at) reservoir (dot) com)
357    Date: 2004/08/10 23:35:00 EST
358    Tag: leunga-110_48-ppc
359    Description:
360    
361       The IBM/MacOS syntax switch on PPC was incorrectly swapped.
362    
363    ----------------------------------------------------------------------
364    Name: Matthias Blume (blume (at) tti - c (dot) org)
365    Date: 2004/08/10 12:00:00 CDT
366    Tag: Release_110_48
367    Description:
368    
369    New working version (110.48).  NEW BOOTFILES!
370    
371    ----------------------------------------------------------------------
372    Name: Allen Leung (leunga (at) reservoir (dot) com)
373    Date: 2004/08/09 12:21:00 EST
374    Tag: leunga-110_47-dijsktra
375    Description:
376    
377    Bug fix from Carl Hauser:
378    
379    single_source_shortest_paths in dijkstra.sml was observed to get wrong
380    answers (by comparing to single_source_shortest_paths in bellman-ford.sml).
381    
382    The problem is that following the expression A.update(dist,s,Num.zero)
383    it is necessary to update the priority queue using Q.decreaseWeight(Q,s).
384    
385    ----------------------------------------------------------------------
386    Name: Matthias Blume (blume (at) tti - c (dot) org)
387    Date: 2004/08/06 18:10:00 CDT
388    Tag: blume-20040806-cmdline
389    Description:
390    
391    Fiddled with handling of command-line options:
392    
393      * sml now quits after processing the command line
394        if -H, -S, -h<n>, or -s<n> appears as the last
395        command-line argument
396      * a new option -q terminates the session when encountered on
397        the command line; subsequent arguments will be ignored
398      * bug fixes: short (erroneous) arguments are no longer ignored
399        completely
400    
401    ----------------------------------------------------------------------
402    Name: Allen Leung (leunga (at) reservoir (dot) com)
403    Date: 2004/08/04 18:17:00 EST
404    Tag: leunga-110_47-ppc-ibm-asm
405    Description:
406    
407      - Added minimal IBM assembly syntax support for PowerPC.
408    
409      - Cygwin: manually changed the file cygwin.def.  Some exported symbols have
410        been altered in the runtime.  We need an automatic way to keep the file
411        in sync.
412    
413    ----------------------------------------------------------------------
414    Name: Matthias Blume (blume (at) tti - c (dot) org)
415    Date: 2004/08/04 14:00:00 CDT
416    Tag: Release_110_47
417    Description:
418    
419    New working version (110.47).  NEW BOOTFILES!
420    
421    ----------------------------------------------------------------------
422    Name: Matthias Blume (blume (at) tti - c (dot) org)
423    Date: 2004/08/03 14:25:00 CDT
424    Tag: blume-20040803-callingconv
425    Description:
426    
427    Added low-level support for choosing C calling conventions by
428    twiddling the type of rawccall.  (See
429    src/compiler/Semant/types/cproto.sml for details.)
430    
431    ----------------------------------------------------------------------
432    Name: Matthias Blume (blume (at) tti - c (dot) org)
433    Date: 2004/08/02 15:55:00 CDT
434    Tag: blume-20040802-backout
435    Description:
436    
437    Backed out of change to win32-filesys.c.  The earlier patch to
438    get_file_time caused CM to produce files with the wrong time stamp.
439    
440    ----------------------------------------------------------------------
441    Name: Matthias Blume (blume (at) tti - c (dot) org)
442    Date: 2004/08/02 14:45:00 CDT
443    Tag: blume-20040802-nlffi-win32
444    Description:
445    
446    Added NLFFI support for Win32, adapted from a patch provided by David
447    Hansel.  This is currently completely untested.  Also, the issue
448    concerning stdcall vs. ccall is still unresolved.
449    
450    ----------------------------------------------------------------------
451    Name: Matthias Blume (blume (at) tti - c (dot) org)
452    Date: 2004/07/30 17:55:00 CDT
453    Tag: blume-20040730-various
454    Description:
455    
456    Gearing up towards 110.47...
457    
458    - various minor bugfixes to ml-nlffigen
459    - a beginning of a manual for nlffi
460    
461    - eliminated 'export name=value' in config/install.sh as this does
462      not work with certain versions of /bin/sh
463      (Thanks to David King at Motorola for catching this.)
464    
465    - several bugfixes provided or suggested by David Hansel at Reactive Systems:
466      - added a test for tm==NULL to gmtime.c and localtime.c
467      - applied patch for incorrect GetFileTime under win32
468      - toSeconds -> toMilliseconds in Win32/win32-process.sml
469    
470    ----------------------------------------------------------------------
471    Name: Matthias Blume (blume (at) tti - c (dot) org)
472    Date: 2004/07/21 18:20:00 CDT
473    Tag: blume-20040721-nlffigen
474    Description:
475    
476    - Fixed minor issue in ml-nlffigen: Now generate structure T_foo
477      for a typedef to an incomplete type, but leave out the "typ" member.
478      (This is just for consistency.)
479    - Started to produce what is supposed to become better (i.e., comprehensive)
480      documentation of what ml-nlffigen does and produces.
481    
482    ----------------------------------------------------------------------
483    Name: Matthias Blume (blume (at) tti - c (dot) org)
484    Date: 2004/07/14 16:25:00 CDT
485    Tag: blume-20040714-union
486    Description:
487    
488    Added C_UNION to c-calls/c-types.sml and updated the machinery
489    (ml-nlffigen, cproto.sml) that conveys C function interface
490    information to the code generator.
491    
492    However, the actual architecture-specific implementation of function
493    arguments and results that are C unions is still not implemented.
494    
495    ----------------------------------------------------------------------
496    Name: Allen Leung (leunga (at) reservoir (dot) com)
497    Date: 2004/07/14 14:38:00 EST
498    Tag: leunga-110_46_1-ppc-lwzu
499    Description:
500    
501        Added these instructions to the PowerPC architecture:
502        LBZU(X), LHZU(X), LWZU(X),
503        STWU(X), STFDU, STFSU
504    
505        etc...
506    
507        Note: I haven't added their instruction encoding into the description.
508    
509    ----------------------------------------------------------------------
510    Name: Allen Leung (leunga (at) reservoir (dot) com)
511    Date: 2004/07/13 15:04:00 EST
512    Tag: leunga-110_46_1-ppc-lwarx
513    Description:
514    
515       Added the two instructions LWARX and STWCX to the PowerPC
516    instruction set.
517    
518       A (untested) rewrite of loop-structure.sml.  The old version
519    is completely broken.
520    
521    ----------------------------------------------------------------------
522    Name: Matthias Blume (blume (at) tti - c (dot) org)
523    Date: 2004/07/13 13:50:00 CDT
524    Tag: blume-20040713-nlffi
525    Description:
526    
527    - use paramAlloc to report c-calls with too many arguments
528      (for PPC version where parameter area is pre-allocated)
529    - added ccall_maxargspace to machspec (to implement the above)
530    - made "make" commend in CM's "make" tool configurable
531    - added option (default: on) for passing the name of the SML/NJ's "bin"
532      directory to "make"; the call looks like this:
533    
534         make <options> SMLNJ_BINDIR=<dir> <target>
535    
536      This can be used by the Makefile to, e.g., pick the "right" version
537      of ml-nlffigen.
538    - minor code tweaks
539    
540    ----------------------------------------------------------------------
541    Name: Matthias Blume (blume (at) tti - c (dot) org)
542    Date: 2004/07/12 22:50:00 CDT
543    Tag: blume-110_46_1-macosx-nlffi
544    Description:
545    
546    NLFFI under Mac OS X now working (sort of).  This is largely untested,
547    though.
548    
549    Note:  1. You have to make a new, clean build of the runtime system.
550           2. There are new BOOTFILES, you have to use them!
551              (Doing the bootstrap process yourself would be *very* painful!
552               If you absolutely have to do it, build the system under
553               a different architecture and then cross-compile.)
554    
555    Version bumped to 110.46.1 to account for runtime data format changes.
556    
557    ----------------------------------------------------------------------
558    Name: Matthias Blume (blume (at) tti - c (dot) org)
559    Date: 2004/06/18 14:30:00 CDT
560    Tag: blume-20040618-unix
561    Description:
562    
563    Changed the implementation of structure Unix so that the same stream
564    is returned every time one of the {text,bin}{In,Out}streamOf functions
565    is invoked on the same proc.  This is not what the spec currently
566    says -- although IMO it arguably should.  (See discussion below.)
567    
568    ----------------------------------------------------------------------
569    Name: Matthias Blume (blume (at) tti - c (dot) org)
570    Date: 2004/06/17 18:15:00 CDT
571    Tag: Release_110_46
572    Description:
573    
574    New working version (110.46).  NEW BOOTFILES!
575    
576    ----------------------------------------------------------------------
577    Name: Matthias Blume (blume (at) tti - c (dot) org)
578    Date: 2004/06/17 17:20:00 CDT
579    Tag: blume-20040617-timer-unix
580    Description:
581    
582    Changed the interface of structures Timer and Unix to match the most
583    recent Basis spec.
584    
585    In the case of Unix there still seems to be an open/weird issue:
586    
587       The {text,bin}{In,Out}streamOf functions are supposed to create
588       fresh streams whenever they are called -- as opposed to have them
589       return the same stream every time.  This design is supposed to
590       prevent space leaks caused by proc values hanging on to streams.
591    
592       The reap function, on the other hand, is supposed to close the
593       streams.  This cannot be done without having a handle on the
594       stream in proc after all...
595    
596    I took the liberty to implement the following stopgap solution:
597    
598      The proc value hangs on to the most recently created stream(s).
599      Reap closes those.  If either or both of the two streams hadn't
600      been created at all yet, then reap will close the corresponding
601      file descriptors directly.
602    
603    PS: I don't understand the original space leak argument anymore.  If
604    a proc hangs on to the imperative stream, then I/O operations on those
605    will advance the state of the cached stream and avoid the space leak.
606    
607    ----------------------------------------------------------------------
608    Name: Matthias Blume (blume (at) tti - c (dot) org)
609  Date: 2004/05/28 16:45:00 CDT  Date: 2004/05/28 16:45:00 CDT
610  Tag: blume-20040528-basis  Tag: blume-20040528-basis
611  Description:  Description:
# Line 29  Line 621 
621  CM now ignores (but still accepts) the "owner" information in group  CM now ignores (but still accepts) the "owner" information in group
622  descriptions.  The owner of a group is its next enclosing  descriptions.  The owner of a group is its next enclosing
623  library. Each group must have a unique owner.  (There is a virtual  library. Each group must have a unique owner.  (There is a virtual
624  "toplevel" library that own groups which are not nested within a real  "toplevel" library that owns groups which are not nested within a real
625  library.)  Previously, each group had to explicitly declare its owner,  library.)  Previously, each group had to explicitly declare its owner,
626  and CM would check that such a declaration is correct.  The new scheme  and CM would check that such a declaration is correct.  The new scheme
627  is to have CM check that for each group there is precisely one owning  is to have CM check that for each group there is precisely one owning

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