* harbour/contrib/rddads/adsx.c
* improved code to solve RDD initialisation order problem
* harbour/contrib/rddsql/sqlbase.c
! fixed minor typo
* harbour/source/pp/hbpp.c
* harbour/source/compiler/hbusage.c
* updated copyright year to 2009
* harbour/include/hbcomp.h
* harbour/include/hbmacro.ch
* harbour/source/compiler/ppcomp.c
* harbour/source/compiler/hbusage.c
* harbour/source/compiler/cmdcheck.c
+ added -ko (allow operator optimizations) compiler switch
It's disabled by default.
* harbour/include/hbexprb.c
* removed HB_ADD_SUB_ONE_OPT macro and enable optimizations covered
by it when -ko switch is used.
* harbour/source/common/expropt2.c
* disabled <exp> + 0 => <exp>, <exp> + "" => <exp>, - - <exp> => <exp>
optimizations for default compiler settings. They can be enabled by
-ko compiler switch
+ added optimizations for numeric values and + operator which uses
standard mathematical + behavior for real numbers:
a + b + c == a + ( b + c )
a + b == b + a
It's disabled by default and can be enabled by -ko compiler switch.
There are also other similar optimizations which can be added in
this way.
* harbour/include/hbapi.h
* harbour/source/vm/itemapi.c
* harbour/source/vm/fm.c
! fixed redundant call to hb_xrealloc() in string resize operation.
Thanks to Mindaugas for locating it.
* source/compiler/hbopt.c
+ added logic to generate 'assigned but unused' warning in case
op= is used. Ex.:
nI += nJ
nI := 5
; This type of redundancy is not found in core code
* include/hberrors.h
* source/compiler/hbgenerr.c
* source/compiler/hbopt.c
+ implemented warning: Variable '%s' is never assigned in function %s(%d).
This variable can be replaced by value NIL
* source/rtl/treport.prg
% removed never assigned variable
* source/compiler/hbopt.c
! one more try to fix passing informatino about redundant variable
assignment by preprocessor rules, i.e., _nowarn_* hack removed,
using HB_SYMBOL_UNUSED() technique
* include/hbclass.ch
* include/std.ch
! fixed redundant nScope and GetList assignment
* contrib/rddado/adordd.prg
* contrib/xhb/cstruct.prg
* contrib/xhb/hblog.prg
* contrib/xhb/sprintf.prg
! fixed assigned but not used variable
* include/hbcomp.h
* source/compiler/hbmain.c
* source/compiler/hbopt.c
! fixed warnings of last commit
* contrib/hbpgsql/tpostgre.prg
! fixed assigned but not used variable
* include/hbclass.ch
* include/hbcomp.ch
* include/hberrors.h
* include/hbgenerr.c
* include/hbmain.c
* include/hbopt.c
+ PCode optimizations:
1) Self := QSELF(), Self:method -> QSELF():method
2) Declared, but unused variables are removed from code
These optimizations are enabled if jump optimizations are enabled.
+ added recursive pcode tree tracer. It is capable to generate new
warning: Variable %s is assigned, but not used.
Warning is not generated in these cases:
1) unoptimal Self := QSELF() pcode [generated by preprocessor rules]
2) if variable name starts with '_nowarn_'. This allows to
suppress warning in case unoptimal pcode is generated by
preprocessor rules
3) assigned value is NIL. This let us force garbage collection
using oVar := NIL
Warning has warning level 3.
; NOTE: if you are using -w3 -es2 in makefiles, you'll need to fix your
redundant code to compile the project
* source/rtl/achoice.prg
* source/rtl/browse.prg
* source/rtl/tbrowse.prg
* source/rtl/teditor.prg
* source/rtl/tget.prg
* source/rtl/tgetlist.prg
* source/rtl/tlabel.prg
* source/rtl/tmenusys.prg
* source/rtl/tpersist.prg
* source/rtl/treport.prg
* source/debug/dbgtmenu.prg
* source/debug/debugger.prg
* source/debug/dbgtobj.prg
* fixed 'assigned but not used' warnings
* utils/hbdoc/hbdoc.prg
* utils/hbdoc/genasc.prg
* utils/hbdoc/genhpc.prg
* utils/hbdoc/genhtm.prg
* utils/hbdoc/genchm.prg
* utils/hbdoc/genng.prg
* utils/hbdoc/genos2.prg
* utils/hbdoc/genrtf.prg
* utils/hbdoc/gentrf.prg
* utils/hbdoc/ft_funcs.prg
* utils/hbmake/hbmake.prg
* #pragma -w2
; NOTE: I've been fixing warnings in utils/hbdoc/* for 2 hours,
but only fixed half of files. There are a lot of garbage code here.
I do not thing this code is working...
I used fallback method: restored original files and used -w2
; NOTE: hbmake.prg has about 140 unused assignments.
I've also fallback to -w2, because some of unused code is complex,
ex., ASCAN() with block parameters. I'm not using hbmake, and I'm
affraid to break something important.
* compiler/hbpcode.c
- removed Ron's copyright on hb_compStrongType(). We do not have this
functions in the compiler at all. I guess this text is just a result
of .c header copy-paste from xHarbour's hbstrong.c some time ago.
* harbour/include/hbthread.h
* harbour/source/vm/thread.c
+ added hb_atomic_set(), hb_atomic_get(), hb_atomic_inc() and
hb_atomic_dec() functions which operates on HB_COUNTER or smaller
type if it's necessary for some platforms which can be access/assign
increment/decrement in MT safe atom operations.
hb_atomic_dec() returns true if counter is 0 after decrementation
* harbour/include/hbatomic.h
! fixed compilation in Linux and OpenWatcom
* harbour/include/hbapiitm.h
* harbour/source/rtl/itemseri.c
+ make hb_itemSerialize() and hb_itemDeserialize() public functions
! fixed serialization items with internal item references
* harbour/source/vm/hvm.c
* release memvars after closing RDDs
* harbour/source/debug/dbgentry.c
! fixed buffer overflow reported by Rodrigo
* harbour/source/vm/macro.c
* harbour/source/compiler/hbmain.c
* formatting
* harbour/include/hbexprb.c
! fixed wrongly recognized functions with HB_I18N_ prefix as
HB_I18N_GETTEXT()
* harbour/include/hbapi.h
* harbour/include/hbstack.h
* harbour/include/hbthread.h
* harbour/source/vm/estack.c
* harbour/source/vm/thread.c
* harbour/source/vm/hvm.c
+ added support for I18N in HVM.
Each thread can have it's own i18n set.
When new thread is created then it inherits i18n set from parent
thread and both uses the same set (please remember about it if you
will want to make some direct modifications on active i18n set
internals).
When thread change active i18n set then it effects only this thread
and new threads which will be create later. It does not change i18n
in other existing threads.
+ added functions to set/get pointer to active i18n set in HVM
void * hb_vmI18N( void )
void hb_vmSetI18N( void * )
* harbour/include/hbapi.h
* harbour/source/rtl/hbi18n.c
+ added i18n module. Now only for internal Harbour usage without support
for optional switching to alternative implementations.
I'll add such functionality later when I will work on native gettext
support.
The following public .prg functions has been added:
HB_I18N_GETTEXT[_STRICT]( <cMsgID> [, <cContext> ] )
-> <cTranslatedMsgID> | <cMsgID>
HB_I18N_NGETTEXT[_STRICT]( <nValue>, <cMsgID> | <acMsgID> ;
[, <cContext> ] )
-> <cTranslatedMsgID> | <cMsgID> | <acMsgID>[ <nIndex> ]
This is minimal support necessary for .prg code which has to exists
in each i18n module working with Harbour.
The following functions had been added as public C API:
PHB_ITEM hb_i18n_gettext( PHB_ITEM pMsgID, PHB_ITEM pContext )
PHB_ITEM hb_i18n_ngettext( PHB_ITEM pNum,
PHB_ITEM pMsgID, PHB_ITEM pContext )
The following functions had been added as private HVM C API:
void hb_i18n_init( void )
void hb_i18n_exit( void )
void hb_i18n_release( void * cargo )
void * hb_i18n_alloc( void * cargo )
They have to be supported by alternative i18n modules
The following functions has been added to manage Harbour i18n
translations sets:
HB_I18N_CREATE()
-> <pI18N>
Creates new empty I18N translation set
HB_I18N_CODEPAGE( [<pI18N>,] [<cNewCP>], [<lBase>], [<lTranslate>] )
-> <cOldCP>
Gets or sets Harbour codepage used by translation set
<pI18N> - I18N translation set,
if it's not given then currently active I18N set is used
<cNewCP> - new CP ID. Must be linked with application
<lBase> - when it's .T. then get/set base massages CP instead of
translated massages CP
<lTranslate> - if it's .T. then translate base (<lBase>==.T.) or
final messages in I18N set from previous CP to
given one. Base messages translation in synced
with context ID translation.
HB_I18N_PLURALFORM( [<pI18N>,] [<cNewForm>|<bNewForm>], [<lBase>] )
-> <cOldForm>|<bOldForm>
Gets or sets plural form used for final or base messages
<pI18N> - I18N translation set,
if it's not given then currently active I18N set is used
<cNewForm> - language ID of plural form, f.e.: "EN", "PL", "LT".
Now only three above are supported. Please add rules
for other languages to source/rtl/hbi18n.c.
<bNewForm> - codeblock used to calculate plural form indexes.
can be used instead of character representation but
it's not storred in serialized I18N set
<lBase> - when it's .T. then get/set base massages plural form
instead of translated massages one.
HB_I18N_DESCRIPTION( [<pI18N>,] [<cNewDescription>] )
-> <cOldDescription>
Gets or sets translation set description. After serialization
up to 32 bytes is stored in header which can be easy used to
determinate type of translation file.
<pI18N> - I18N translation set,
if it's not given then currently active I18N set is used
<cNewDescription> - new description
HB_I18N_ADDTEXT( <pI18N>, <cMsgID>, <cTrans> | <acTrans> [, <cContext> ] )
-> NIL
Adds new message with translation to i18n translation set
<pI18N> - I18N translation set
<cMsgID> - original message
<cTrans> - translated message
<acTrans> - array with translated messages used for plural forms
<cContext> - message context
HB_I18N_SET( [ <pI18N> | NIL ] )
-> <lActive>
Sets given I18N translation set as default one used by
HB_I18N_[N]GETTEXT[_STRICT]() functions or remove translation
set for calling thread when passed parameter is NIL
<pI18N> - I18N translation set
Returns logical value which is .T. when i18n set is active
HB_I18N_SAVETABLE( [<pI18N>] )
-> <cTable>
Returns I18N translation as string item which can be stored
in file or database
<pI18N> - I18N translation set, if it's not given then currently
active I18N set is used
HB_I18N_RESTORETABLE( <cTable> )
-> <pI18N> | NIL
Restores I18N translation set from strin item.
<cTable> - I18N translation set in string representation
On success it returns new <pI18N> set otherwise NIL if <cTable>
is not valid item created by HB_I18N_SAVETABLE() or it's corrupted.
HB_I18N_HEADERSIZE()
-> <nHeaderSize>
Returns size of header used by i18n serialized version
HB_I18N_CHEK( <cTable> | <cHeader> [, @<cDescription> ] )
-> <lValid>
<cTable> - i18n translation set serialized by HB_I18N_SAVETABLE
<cHeader> - header of i18n translation set
( LEFT( <cTable>, HB_I18N_HEADERSIZE() )
<cDescription> - optional parameter passed by reference where
will be sored i18n translation set description
extracted from valid header
Returns logical value indicating if given table or header is
valid serialized by HB_I18N_SAVETABLE() data. It does not
decode the table though it validates size and control sums.
These functions are optional and some future alternative implementations
may not support all of them and/or may provide some other functions.
+ added unofficial .prg function __I18N_HASHTABLE() which allows to
access hash table used by i18n translation set or create new translation
set with given hash table. It's helper functions for developers which
will work on Harbour i18n tools and should not be used by Harbour users.
Unlike original gettext Harbour allows to use language with many
plural forms as base one. In such case programmer should activate
at application startup default i18n translation set with base plural
form valid for base application language, f.e. by:
pI18N := hb_i18n_create()
hb_i18n_pluralForm( pI18N, <cLangID> | <bForm>, .t. )
hb_i18n_set( pI18N )
.prg code example:
#xtranslate _( <x,...> ) => hb_i18n_gettext_strict( <x> )
#xtranslate _N( <x,...> ) => hb_i18n_ngettext_strict( <x> )
proc main()
local pI18N, i
pI18N := hb_i18n_create()
hb_i18n_pluralForm( pI18N, "PL", .t. )
hb_i18n_set( pI18N )
for i := 0 to 30
? i, _N( i, {"grosz", "grosze", "groszy"} )
if i > 0 .and. i % 10 == 0
wait
endif
next
return
In .pot files created during compilation by Harbour with -j option
for above code we have the following entries for message with plural
forms:
msgid "grosz"
msgid_plural "grosze"
msgid_plural2 "groszy"
msgstr[0] ""
The msgid_plural2 (and others if language has more plural forms)
is Harbour extension which is not gettext compatible.
The above implementation is base version but should be fully functional.
Now we will need functions to safe/read i18n files and tools to mange
.pot files: merge them, edit translations, create final binary i18n
translation sets. Because we are using gettext compatible .pot files
then for some of such jobs we can use original gettext tools but we
need at least function which will create translation set from one or
more .pot files.
We should also agree some default localization(s) for files containing
translated data, their name convention and environment variable(s)
to set default language. It's not strictly necessary and each user
can have his own implementation but it would help in adding new
translations by final users to any Harbour application which will
respect them. We can use LANG envvar to extract preferred language
and use the same path as executed application looking for files
<appname>-<lang>.hil files though it may create some problems for
OSes which support only 8.3 file names so we can also define that
HB_I18N envvar has higher priority and points to expected translation
file.
* harbour/include/hbextern.ch
- removed old __i18n_*() functions
+ added current i18n functions
* harbour/contrib/xhb/Makefile
* harbour/contrib/xhb/common.mak
+ harbour/contrib/xhb/xhbarr.c
+ added aSplice(), aRemove() and aMerge() functions - code borrowed
from xHarbour by Ron Pinkas.
! fixed GPF trap in these functions
* harbour/contrib/xhb/xhbfunc.c
+ added CSTR()
* harbour/contrib/xhb/hbcompat.ch
! changed name of xHarbour include files - they where changed few
months ago and now they are the same as in Harbour.
To xHarbour users: please update hbcompat.ch in xHarbour CVS
* harbour/contrib/xhb/filestat.c
! fixed UNICODE compilation
* harbour/contrib/xhb/hblognet.prg
* harbour/contrib/xhb/hblog.prg
* formatting
* harbour/contrib/hbnf/tempfile.prg
! do not use HB_ISBYREF() .prg function - this function does not
exist in Harbour and does not work correctly in xHarbour
* harbour/include/hbapiitm.h
* harbour/source/vm/macro.c
* harbour/source/vm/codebloc.c
* harbour/source/vm/hashes.c
* harbour/source/vm/garbage.c
* harbour/source/vm/itemapi.c
* harbour/source/vm/memvars.c
* cleanup
* harbour/contrib/gtwvg/Makefile
! fixed typo
* harbour/contrib/gtwvg/hbgtwvg.ch
* added new line at the end of file and changed non ANSI C // comments
to /* */ - this file is included by C code too.
* harbour/contrib/gtwvg/wvgwin.c
* harbour/contrib/gtwvg/wincallb.c
* pacified some warnings and fixed possible access to uninitialized data
* harbour/source/compiler/harbour.y
* harbour/source/compiler/harbour.yyc
! fixed possible double freeing of memory blocks in #line directives
TOMERGE[1.0]
* harbour/common.mak
* harbour/source/compiler/hbmain.c
+ harbour/source/compiler/compi18n.c
* moved hb_compI18n*() functions to separate file covered by GPL with
Harbour exception - Thank to Mindaugas
* harbour/include/hbcomp.h
* harbour/include/hbcompdf.h
* harbour/include/hbexpra.c
* harbour/include/hbexprop.h
* harbour/include/hbexprb.c
* harbour/source/common/expropt1.c
* harbour/source/compiler/Makefile
* harbour/source/compiler/ppcomp.c
* added support for plural forms:
hb_i18n_ngettext[_noop|_strict]( <nExp>, <cText> | <acText> ;
[, <cContext> )
<acText> is accepted only as array of literal strings even if
_strict suffix is missing - if it's a problem then we can change it.
hb_i18n_ngettext_noop() is reduced only when it has valid parameters
The default plural index expression used for reduction at compile
time is: iif( <nExp> == 1, 1, 2 )
If second parameter of hb_i18n_ngettext_noop() is <cText> or <acText>
length is 1 then it's reduced to <cText> or acText[1] else if second
parameter is <acText> with more then 1 item then it's reduced to
<acText>[ iif( <nExp> == 1, 1, 2 ) ]
and if <nExp> is literal numeric expression is farther reduced to
given array item. Otherwise is not reduced and warning is generated.
The plural forms in .pot files are generated as:
msgid ""
msgid_plural ""
msgid_plural2 ""
[...]
msgid_pluralN ""
msgstr[0] ""
Then real message ID is only msgid (with context if any) and
msgid_plural* is used only for information. When the same msgid
is used more then once in different hb_i18n_ngettext*() calls then
plural messages are merged.
Please remember that for strict gettext compatibility only two plural
forms are allowed.
* extended i18n warnings for simple types validation, f.e.:
hb_i18n_gettext( .t. )
* do not generate empty .pot file when source code does not contain any
hb_i18n_*() functions
* store in .pot files references to real source file names with paths
respecting #include directives
* use hb_compIdentifierNew() to hash i18n messages at compile time
! fixed possible bad escape encoding of i18n strings
+ added support to control -j[01] flag using #pragma directive
Before I'll begin to work on runtime support please test these
modifications and inform me about problems you can see with the
above version and missing functionality.
* harbour/include/hbcompdf.h
* harbour/source/compiler/harbour.yyc
* harbour/source/compiler/harbour.y
! fixed compile time warnings for __enum* messages used in
simpled code block variables inside FOR EACH statement,
* harbour/include/hbapi.h
* harbour/source/common/hbstr.c
+ added hb_numToStr()
* harbour/source/vm/estack.c
* harbour/source/compiler/genc.c
* harbour/source/compiler/gencc.c
* use hb_numToStr() for integer number conversions
* harbour/source/vm/dlmalloc.c
* disable #pragma warning ... in MinGW builds. If some newer MinGW
versions support it and it's useful then it can be enabled after
checking MinGW version
* tests/longstr.prg
* contrib/hbole/oleauto.prg
* contrib/hbole/ole2.c
* contrib/gtwvg/wvgutils.c
* contrib/gtwvg/wvgcore.c
* contrib/hbgd/gdbarcod.prg
* contrib/hbgd/gdbar.prg
* contrib/hbwin/win_tole.prg
* contrib/hbwin/win_ole.c
* contrib/hbvpdf/hbvpdf.prg
* contrib/examples/hbsqlit2/tests/hbsqlite.prg
* contrib/examples/hbsqlit2/TODO.txt
* contrib/examples/hbsqlit2/hbsqlit2.c
* source/debug/dbgwa.prg
* source/rtl/gtwin/gtwin.c
* source/rtl/tget.prg
* source/rtl/tgetint.prg
* source/compiler/gencobj.c
! Removed high chars from comments. This usually means
copyright holders' names. I apologize for touching
them, I also have one in mine, but it's better to
not use them in source code to avoid encoding problems.
* harbour/source/vm/memvars.c
! fixed 3 tracelog messages
* harbour/source/rtl/hbgtcore.c
* declare core method table as const
* harbour/source/compiler/gencc.c
! fixed accessing data out of buffer in string to hex conversion and
logical expression used to divide strings
* ChangeLog
! Restored last non-UNICODE version, and readded
all entries and reapplied all changes since then.
; NOTE: Please never save any Harbour files in
UNICODE mode. Thank you.
* contrib/make_gcc_all.sh
* contrib/Makefile
- Removed hbdbgfx.
* source/pp/hbpp.c
* source/main/harbour.c
* Excluded hbwmain for __POCC__ WinCE.
; TOFIX: Warning: Not proper fix.
This way it won't link but at least it compiles.
* source/compiler/gencc.c
* Switched to hexadecimal format for high chars, because
octal was tried to be converted to Windows codepage, by
PellesC.
* config/w32/poccce.cf
- Removed -DSTRSAFE_NO_DEPRECATE switch.
* config/w32/pocc.cf
+ Added -MT switch.
* contrib/hbwin/win_prn2.c
* contrib/hbwin/win_dll.c
* source/rtl/hbhex.c
* source/rdd/hbsix/sxcompat.prg
* Minor formatting.
* make_b32.mak
* contrib/mtpl_b32.mak
* config/w32/bcc32.cf
- Added -4 switch, which means Intel 386 CPUs are not
not supported by default.
* make_vc.mak
+ Added -GA switch to MSVC 32/64 which creates smaller
(and only slightly faster) TLS access code.
* source/compiler/cmdcheck.c
* source/compiler/hbusage.c
+ Added -/+ suboptions to -k? options to make it
possible to set them to the opposite setting.
; NOTE: BTW, shouldn't -ki option also disable
#pragma BEGINDUMP/ENDDUMP? IMO it should,
otherwise it doesn't really enforce C
out of .prg code.
* config/w32/gcc.cf
* config/w32/mingw.cf
* Changed -march=i486 to -march=i586.
; NOTE: Please comment on CPU optimization switches, IMO
we can quite safely target Pentium/586 as the
minimum CPU requirement these days for default
Harbour builds. If someone needs to run it on
386 (Win95) or 486 (Win98/WinME), a special built
can be created.
* ChangeLog
+ Clarification to previous entry.
* source/common/hbgete.c
* source/common/hbfsapi.c
! Blind fix for OS/2 compiler warnings. David, please test.
* source/rtl/philes.c
* Minor (0 -> '\0').
* source/compiler/hbusage.c
! Fixed old typo in help text.
; BTW: What is missing for gettext support?
* harbour/include/hbxvm.h
* harbour/source/vm/hvm.c
* harbour/source/compiler/gencc.c
+ added finished by mistake support for hidden strings in -gc3 mode
* harbour/bin/hbmk.bat
* simple modification to make beginning hbmk parameters (-mt and -gui)
position independent though they still have to be used before Harbour/
C compiler switches and filenames
* harbour/source/common/hbdate.c
* harbour/source/compiler/cmdcheck.c
* harbour/source/rtl/filesys.c
* harbour/source/rtl/hbffind.c
! use MT safe localtime_r() function if it's available instead of
localtime()
TODO: clean the usage of this function and gmttime[_r]() probably
by adding our own wrappers.
* harbour/source/rtl/hbffind.c
! disabled calls to tzset() - this function should be executed
automatically by CRTL only if it's necessary. It's also not MT
safe and can cause MT applications crash.
* harbour/source/compiler/gencc.c
! fixed thread static variable offsets generated in .c code when
-gc3 is used
* harbour/source/vm/hvm.c
% removed unnecessary call to HB_STACK_TLS_PRELOAD
* harbour/source/vm/hvm.c
* changed the place where exception handles are set/remove.
Now it's set at the beginning of hb_vmInit() and removed
at the end of hb_vmQuit()
* harbour/source/rdd/dbcmd.c
* harbour/source/rdd/dbf1.c
! added workaround for problem with EVAL block used in PACK
command
* harbour/source/compiler/hbmain.c
* minor simplification
* harbour/include/hbcompdf.h
* harbour/source/compiler/hbmain.c
% do not add dummy entries to symbol table for functions declared
as dynamic - it allows to include hbdynamic.ch with list of all
supported functions by application and/or harbour.dll to any .prg
file which will be used to create shared library (.dll, .so, ...)
without any memory overhead.
* harbour/source/compiler/genc.c
% do not generate unnecessary HB_FUNC_EXTERN() declarations for
function declared as DYNAMIC
* source/compiler/gencc.c
* Trick to avoid MSVC -W4 warnings in -gc3 compiled C code,
when compiled string literal contained certain high (> 127)
chars followed by a digit. Thanks Przemek.
NOTE: I've checked and hexadecimal format has even more
such problems.
* bin/bld.bat
* bin/bld_os2.cmd
* HARBOURFLAGS removed as a public envvar to setup Harbour
parameters. Use PRG_USR instead.
* common.mak
! Fixed after recent modification.
* source/compiler/cmdcheck.c
* Minor formatting.
* harbour/source/compiler/cmdcheck.c
! fixed starting index in parsed parameters. argv[0] is
application name with path not user parameter. Parsing
it was giving unpredictable results if harbour binaries
were located in path having option delimiters in name
* debian/changelog
* Synced with 1.0.1.
* source/pp/ppcore.c
! Minor typo in one PP error message. (sync 1.0.1)
* Cleaned ":" from all PP error/warning messages to be
friendly with Eclipse.
* source/compiler/hbgenerr.c
* Cleaned some more ":" chars from compiler error/warning
messages to be friendly with Eclipse.
; NOTE: Few more still remain. If you have an idea how to rephrase these, pls tell:
"Bound error: '%s'"
"Syntax error: '%s'"
"Syntax error: \"%s at '%s'\""
"Invalid lvalue: '%s'"
"Invalid use of '@' (pass by reference): '%s'"
"3Incompatible type in assignment to declared array element expected: '%s'"
"4Suspicious type in assignment to declared array element expected: '%s'"
* utils/hbmake/hbmake.prg
* Updated by large patch from Bill Robertson.
Adds several enhancements, fixes and optimizations
to the previous version.
* utils/hbdoc/hbdoc.prg
* utils/hbmake/hbmake.prg
* utils/hbrun/hbrun.prg
* Changed the way version number is shown.
* utils/hbmake/hbmake.prg
* Updated MT lib lists. (untested)
* make_b32.mak
* Minor sync with make_vc.mak.
* make_vc.mak
* Attempt to implement hbvmmt.lib just like in
make_b32.mak to make them synced.
* source/compiler/hbgenerr.c
* Most ':' chars removed from Harbour compiler error messages.
Few still remain, where I wasn't sure of the exact meaning
or final layout of the texts.
Warnings are also a TODO yet.
Please review.
* harbour/include/hbpp.h
* harbour/include/hbvm.h
* harbour/include/hbcomp.h
* harbour/include/hbcompdf.h
* harbour/include/hbtrace.h
* harbour/include/hbapilng.h
* harbour/include/hbinit.h
* harbour/source/rtl/langapi.c
* harbour/source/pp/ppcore.c
* harbour/source/pp/hbpp.c
* harbour/source/vm/itemapi.c
* harbour/source/vm/hvm.c
* harbour/source/common/hbver.c
* harbour/source/common/hbtrace.c
* harbour/source/common/expropt2.c
* harbour/source/compiler/complex.c
* harbour/source/compiler/hbident.c
* harbour/source/compiler/hbfunchk.c
* changed some declarations from 'char *' to 'const char *' and
fixed casting for some more pedantic compilers
* harbour/source/pp/ppcore.c
! fixed one typo which could cause memory leak and even GPF
* harbour/common.mak
* harbour/source/vm/Makefile
* harbour/source/rtl/Makefile
- harbour/source/rtl/set.c
+ harbour/source/vm/set.c
* harbour/include/hbstack.h
* harbour/source/vm/estack.c
* moved from RTL to HVM
* eliminated hb_set global structure
* moved set structure to HVM stack
+ added internal function hb_setClone() which is used to create
copy of SET structure for child threads
* hidden HB_SET_STRUCT declaration - 3-rd part code must not access it
directly. Dedicated hb_set*() functions should be used instead.
+ added new function:
BOOL hb_setSetItem( HB_set_enum set_specifier, PHB_ITEM pItem )
which allow to change some set by 3-rd party code.
TODO: not all SETs can be changed yet - if someone have a while
then please add code for missing ones.
* harbour/include/set.ch
* harbour/include/hbset.h
+ added _SET_CODEPAGE which works like _SET_LANGUAGE giving common
interface
* harbour/include/hbsetup.h
+ added HB_CODEPAGE_DEFAULT which works like HB_LANG_DEFAULT
* harbour/source/vm/hvm.c
! fixed builds which uses non EN lang or code page modules
by forcing linking the chosen ones
* harbour/include/hbstack.h
* harbour/source/vm/estack.c
* harbour/include/hbapicdp.h
* harbour/source/rtl/cdpapi.c
- removed global code page variable: hb_cdp_page and moved
code page settings to HVM stack
+ added new function hb_cdpID() which returns current code page
character ID
+ added new functions hb_vmCDP() and hb_vmSetCDP() to get/set
active for given thread code page structure
* harbour/include/hbstack.h
* harbour/source/vm/estack.c
* harbour/include/hbapilng.h
* harbour/source/rtl/langapi.c
+ moved lang setting to HVM stack
+ added new functions hb_vmLang() and hb_vmSetLang() to get/set
active for given thread language module
* harbour/include/hbvmpub.h
* harbour/include/hbstack.h
* harbour/include/hbapi.h
* harbour/source/vm/estack.c
* harbour/source/vm/dynsym.c
* harbour/source/vm/itemapi.c
* harbour/source/vm/memvars.c
* changed memvar handles for HB_HANDLE to void * which is directly
casted to PHB_ITEM - new memvar references
* changed HB_DYNS declarations for MT mode. In MT mode HB_DYNS does
not contain area and memvar handles which are moved to thread
local HVM stack
+ added array for thread local memvar and area handles to HVM stack
% eliminated global continues array with all memvars and detached locals
% changed HB_IT_MEMVAR to use pointers to HB_ITEM directly - it resolve
synchronization problems in MT mode and should also improve the speed
and reduce memory usage. It should be well visible in applications which
uses lot of detached locals.
- removed hb_memvarsInit() and hb_memvarsFree() - they are not necessary
now because we do not longer use array with all allocated memvars
and detached local and private stack initialization is made
automatically
+ added internal functions hb_dynsymGetMemvar()/hb_dynsymSetMemvar()
+ added hb_memvarGetValueBySym() for debugger
* moved PRIVATE variable stack to HVM stack
* eliminated all static variables in memvars module
* harbour/include/hbstack.h
* harbour/source/vm/estack.c
* harbour/source/rtl/fserror.c
* moved IO errors to HVM stack
+ added special IO error handling which works without HVM stack
It allows to use hb_fs*() functions without allocated stack
by 3-rd party threads.
* harbour/source/rtl/filesys.c
* moved hb_fsCurDir() to HVM stack with special handling to work
with HVM stack like IO errors
* harbour/source/rdd/workarea.c
* allocated RDD node array in bigger peaces to reduce later RT
reallocations in MT mode. If user want to add dynamically more
then 64 RDDs then it should synchronize this operation himself.
* harbour/source/rdd/wacore.c
* moved WA list, current WA, default RDD and neteer() flag to HVM stack
* harbour/include/hbdefs.h
- removed HB_HANDLE declaration
* harbour/include/hbapi.h
- removed HB_VALUE structure - it's not longer used due to different
memvar handling
* updated hb_struMemvar to new memvar handling
* replaced hb_vmIsLocalRef() and hb_memvarsIsMemvarRef() with
hb_vmIsStackRef() which respect multiple stack and new memvar
and static structures and location in GC mark pass.
* harbour/include/hbstack.h
* harbour/source/vm/estack.c
* harbour/source/vm/hvm.c
+ added support for thread specific data located on HVM stack
Now it's possible to allocate static variables which are
local to thread. Such variables are allocated on HVM stack
and automatically destroyed. To declare new TSD variable use:
HB_TSD_NEW( <name>, <size>, <init>, <destruct> )
<name> - name of variable which holds TSD handler
<size> - size of TSD are which has to be allocated
<init> - init function, executed when new TSD is allocated by thread
(thread access given TSD 1-st time). This function receives
void * pointer to allocated area.
<destruct> - destructor function executed when HVM stack is destroyed
f.e.:
static HB_TSD_NEW( s_scrData, sizeof( HB_SCRDATA ),
NULL, hb_xSaveRestRelease );
To initialize dynamically allocated TSD variable use:
HB_TSD_INIT( <name>, <size>, <init>, <destruct> )
Pointer to TSD can be accessed using hb_stackGetTSD( &<name> )
where <name> is name of variable which holds TSD handler, f.e.:
PHB_SCRDATA pScrData = ( PHB_SCRDATA ) hb_stackGetTSD( &s_scrData );
See source/rtl/xsavescr.c as an example
It's also possible to test if data has been already allocated for
current thread by:
hb_stackTestTSD( &<name> ) => pData
it works like hb_stackGetTSD() but return NULL if current thread data
has not been allocated yet.
* harbour/include/hbstack.h
* harbour/source/vm/estack.c
* changed hb_stack location to thread local storage in MT mode
+ added functions and macros to access/assign new HVM stack members
+ changed garbage collection mark functions to work with multiple
stacks, thread local static and memvar variables
* harbour/source/rtl/xsavescr.c
* use TSD data for screen buffer to make __XSAVESCREEN()/__XRESTSCREEN()
thread independent
* harbour/source/rtl/idle.c
* use TSD data for idle task settings and codeblocks
- removed hb_idleShutDown() - it's not longer necessary
* harbour/source/rtl/setkey.c
* use TSD data for allocated keys to make SETKEY() thread independent
* harbour/source/rtl/math.c
* moved math error handler, math error block, math error mode and
math error structure to TSD
* harbour/source/rtl/errorapi.c
* moved error handler, error block, error launch counter and DOS error
value to TSD
* harbour/source/rtl/inkey.c
* moved inkey "before" and "after" blocks to TSD
* harbour/source/rdd/hsx/hsx.c
* moved HSX handles array to TSD
* harbour/include/hbapigt.h
* harbour/source/rtl/console.c
- removed hb_setkeyInit() and hb_setkeyExit() - they are not longer
necessary, allocated resources will be freed by TSD destructor
function
* harbour/include/hbapi.h
* harbour/source/rtl/console.c
* removed hb_conXSaveRestRelease() - it's not longer necessary,
allocated resources will be freed by TSD destructor function
* harbour/source/vm/macro.c
* moved s_macroFlags to TSD
* harbour/source/rtl/accept.c
* moved accept buffer to TSD
* harbour/include/hbcomp.h
* harbour/include/hbcompdf.h
* harbour/include/hbxvm.h
* harbour/source/compiler/hbmain.c
* harbour/source/compiler/hbfix.c
* harbour/source/compiler/hbpcode.c
* harbour/source/compiler/hbdead.c
* harbour/source/compiler/complex.c
* harbour/source/compiler/genc.c
* harbour/source/compiler/gencc.c
* harbour/source/compiler/hbopt.c
* harbour/source/compiler/hblbl.c
* harbour/source/compiler/hbstripl.c
* harbour/source/compiler/harbour.y
* harbour/source/compiler/harbour.yyc
* harbour/source/compiler/harbour.yyh
* harbour/source/vm/hvm.c
+ added new PCODE HB_P_THREADSTATICS
+ added support for static variables which are local to thread:
THREAD STATIC <varname [:= <exp>], ...>
They work like normal static variables but each thread operates
on its own copy.
* added protection against possible double call to hb_xfree()
It can happen due to wrong marking expressions as used by bison
and executing destructors after our free code when syntax error
appear.
* harbour/source/rtl/perfuncs.prg
* harbour/source/rtl/menuto.prg
* harbour/source/rtl/getlist.prg
* harbour/source/rtl/readvar.prg
* harbour/source/rtl/text.prg
* use THREAD STATIC variables to make above code MT safe
* harbour/include/hbgtcore.h
* harbour/source/rtl/hbgtcore.c
+ added hb_gt_BaseFree() which will release current GT pointer
locked by hb_gt_Base() function. This function will be used
to optional automatic GT access synchronization when threads
share the same GT.
* harbour/source/rtl/gtapi.c
* harbour/source/rtl/inkeyapi.c
* harbour/source/rtl/mouseapi.c
* harbour/contrib/hbct/ctwin.c
* free GT pointer by hb_gt_BaseFree()
TODO: CTWIN is not MT safe yet - it will be updated together
with core GT when we add multi window interface for
thread with own console window.
* harbour/bin/hb-func.sh
* harbour/config/linux/gcc.cf
+ added rt lib to Linux builds
* harbour/bin/postinst.sh
* create MT safe version of FM stat library: fmmt
* harbour/bin/pack_src.sh
+ added support for ZIP packing
* harbour/include/hbapi.h
* harbour/include/hbvm.h
* harbour/source/vm/hvm.c
+ added hb_vmThreadInit()/hb_vmThreadQuit() functions - they initialize
HVM for calling thread so it can execute .prg code and call HVM
functions. They can be used by 3-rd party code threads.
+ added hb_vmUnlock()/hb_vmLock() functions which informs that
thread will not operate on HVM structures for some time allowing
to execute single thread only processes like GC.
+ added hb_vmThreadQuitRequest() which sends stop request to given
thread
+ added hb_vmWaitForThreads() which stops main thread execution waiting
for other threads
+ added hb_vmSuspendThreads() and hb_vmResumeThreads() used be GC
to stop all HVM threads before mark/swap scan
+ added linked list of HVM stacks
+ added hb_vmTerminateThreads() used by main HVM thread in QUIT state
* moved EXIT procedures execution from QUIT request to HVM QUIT state
in MT mode. It may effects some non structural code which tries to
access private variables in EXIT functions but it's much cleaner
and understandable for user. Please remember that we guaranties
that ALWAYS code in BEGIN SEQUENCE is _always_ executed even after
HVM QUIT request just like destructs. Personally I think that we
should move EXIT procedures execution also in ST mode.
* changed startup and cleanup code for new internal structures
* changes startup and cleanup code for MT mode
% removed some redundant HB_ITEM type settings
! eliminated non MT safe code which was using reference counters
without protection
* harbour/common.mak
* harbour/source/vm/Makefile
+ harbour/include/hbthread.h
+ harbour/source/vm/thread.c
+ added C level functions to manage threads and synchronization objects
See hbthread.h for detail description. They are based on PTHREAD API
and PTHREAD documentation can be used as reference. I intentionally
keep this list small for easier multiplatform porting.
Now they have been implemented for PTHREADS (POSIX threads supported by
many different OSes), MS-Win32/64 and OS2. The OS2 version is not tested
at all. I do not even know if it can be compiled so please make tests.
I used Internet resources and some part of xHarbour code as documentation
for OS2 MT API. It should be quite easy to add other platforms if necessary.
Harbour core code needs non recursive mutexes, conditional variables and
TLS for one pointer. If platforms does not support conditional variables
(f.e. MS-Win or OS2) then they can be emulated using multistate semaphores.
+ added .prg functions to manage threads and synchronization objects:
hb_threadStart( <@sStart()> | <bStart> [, <params,...> ] ) -> <pThID>
hb_threadJoin( <pThID> [, @<xRetCode> ] ) -> <lOK>
hb_threadDetach( <pThID> ) -> <lOK>
hb_threadQuitRequest( <pThID> ) -> <lOK>
hb_threadWaitForAll() -> NIL
hb_mutexCreate() -> <pMtx>
hb_mutexLock( <pMtx> [, <nTimeOut> ] ) -> <lLocked>
hb_mutexUnlock( <pMtx> ) -> <lOK>
hb_mutexNotify( <pMtx> [, <xVal>] ) -> NIL
hb_mutexNotifyAll( <pMtx> [, <xVal>] ) -> NIL
hb_mutexSubscribe( <pMtx>, [ <nTimeOut> ] [, @<xSubscribed> ] ) -> <lSubscribed>
hb_mutexSubscribeNow( <pMtx>, [ <nTimeOut> ] [, @<xSubscribed> ] ) -> <lSubscribed>
The function list should give similar to xHarbour API but they are not exactly
the same and except of hb_mutex*() functions which should replicate xHarbour behavior.
+ harbour/source/vm/vmmt
+ harbour/source/vm/vmmt/Makefile
+ added hbvmmt library to GNU make builds.
Non GNU make builds should be updated.
* harbour/contrib/hbct/pos1.c
* harbour/contrib/gtwvg/gtwvg.c
* harbour/contrib/rddads/ads1.c
* harbour/contrib/hbmisc/spd.c
* harbour/contrib/hbbmcdx/bmdbfcdx.c
* harbour/contrib/examples/rdddbt/dbfdbt1.c
* harbour/source/vm/runner.c
* harbour/source/vm/itemapi.c
* harbour/source/vm/hvm.c
* harbour/source/rtl/console.c
* harbour/source/rtl/strcase.c
* harbour/source/rtl/spfiles.c
* harbour/source/rtl/defpath.c
* harbour/source/rtl/hbgtcore.c
* harbour/source/rtl/dateshb.c
* harbour/source/rtl/mlcfunc.c
* harbour/source/rtl/fstemp.c
* harbour/source/rtl/is.c
* harbour/source/rtl/setcolor.c
* harbour/source/rtl/errorint.c
* harbour/source/rtl/transfrm.c
* harbour/source/rtl/dates.c
* harbour/source/rtl/filesys.c
* harbour/source/rtl/gtdos/gtdos.c
* harbour/source/rtl/gtwin/gtwin.c
* harbour/source/rtl/gtwvt/gtwvt.c
* harbour/source/rtl/gtxwc/gtxwc.c
* harbour/source/rtl/gttrm/gttrm.c
* harbour/source/rtl/gtpca/gtpca.c
* harbour/source/rtl/gtcgi/gtcgi.c
* harbour/source/rtl/gtcrs/gtcrs.c
* harbour/source/rtl/gtstd/gtstd.c
* harbour/source/rtl/gtsln/gtsln.c
* harbour/source/rtl/gtsln/gtsln.h
* harbour/source/rdd/dbf1.c
* harbour/source/rdd/sdf1.c
* harbour/source/rdd/delim1.c
* harbour/source/rdd/dbcmd.c
* harbour/source/rdd/hbdbsort.c
* harbour/source/rdd/workarea.c
* harbour/source/rdd/dbffpt/dbffpt1.c
* harbour/source/rdd/dbfcdx/dbfcdx1.c
* harbour/source/rdd/dbfntx/dbfntx1.c
* harbour/source/rdd/hsx/hsx.c
* harbour/source/rdd/hbsix/sxfname.c
* use API functions instead of direct accessing to hb_cdp_page or hb_set
* harbour/source/rtl/fstemp.c
* harbour/source/rtl/fssize.c
* harbour/source/rtl/hbffind.c
* harbour/source/rtl/filesys.c
* encapsulate potentially slow IO operation inside
hb_vmUnlock()/hb_vmLock() calls to allow other thread GC
activation
* harbour/contrib/hbnf/fttext.c
! fixed casting
* harbour/contrib/gtwvg/gtwvg.h
- removed #include <comctl32.h> - my MinGW and MinGW/CE instalations do
not have them. If it exists in some newer ones then it has to be
covered by #if version checking.
* harbour/source/vm/dynsym.c
- removed hb_dynsymLog() and hb_dynsymMemvarHandle()
* modified code to be MT safe and improved speed of some operations
* added MUEXT protection for global dynamic table access
* harbour/include/hbapi.h
* harbour/source/vm/garbage.c
* changed to work with MT HVM
* changed to work with new memvar structures and thread local static and
memvar variables
* added MUEXT protection for linked block lists
+ added parameter to hb_gcCollectAll() which will force GC activation
in MT mode by temporary suspending all executed threads.
+ added logical parameter to HB_GCALL() functions which is passed to
hb_gcCollectAll()
* harbour/source/vm/fm.c
* added MUEXT protection for FM statistic module
* added MT protection for reference counters. For platforms
which supports atomic incrmenetation/decrementation (f.e.
Interlocked*() functions in MS-Win) such operations are
used. For other it's MUTEX protection. It gives MT safe
readonly access for HVM complex variables without user
synchronization. The MUTEX protection can cause some speed
overhead so it's good to define MT safe version of
HB_ATOM_INC()/HB_ATOM_DEC() in hbthread.h if given platform
has them. Now they are defined only for Windows. For other
platforms We can define can define them in assembler for some
most popular CPUs in the future.
* harbour/source/vm/classes.c
* changed class definition array. Now it keeps pointers to class
structures.
* In MT mode allocated at HVM startup big enough array for class
definitions to avoid later RT reallocations. It effectively eliminates
MUTEX synchronization for class structure access.
* protect by MUTEX code for new class creation
* harbour/source/debug/dbgentry.c
* eliminated hbvmopt.h and direct accessing to HVM structures
* harbour/source/rtl/gtclip.c
* protect with MUTEX access to internal clipboard data
* harbour/source/rdd/nulsys/nulsys.c
+ added hb_rddCloseAll()
+ harbour/tests/mt
+ harbour/tests/mt/mttest01.prg
+ harbour/tests/mt/mttest02.prg
+ harbour/tests/mt/mttest03.prg
+ harbour/tests/mt/mttest04.prg
+ harbour/tests/mt/mttest05.prg
+ harbour/tests/mt/mttest06.prg
+ harbour/tests/mt/mttest07.prg
+ added some demonstration/test small MT programs written
using Harbour language. Some of them can be also compiled
by xHarbour but xHarbour does not pass any of my tests in
real multi-CPU machine so do not expect they will work
correctly.
Harbour threads needs OS threads support. Each Harbour thread is directly
mapped to OS thread. It's not very efficient on some older system where
cost of thread creation and/or task switching is very expensive but it
should not be bigger problem for modern OS-es which can support threads
in practice nearly in user space only.
I haven't touched Harbour function calling convention which comes from
Clipper. It means that we do not pass pointer to VM to each functions
like CLIP or xBase++. To resolve the problem I have to use thread local
storage (TLS) where such pointer is kept. If platform does not support
TLS then it can be emulated by us. Anyhow the speed of accessing TLS
data and extracting HB_STACK poitner is critical for performance.
Some compilers depending on used hardware and OS give native support
for TLS (f.e. __thread keyword in GCC/BCC or __declspec( thread ) in MSVC).
This should give optimal performance. On other Harbour uses TLS functions
like TlsGetValue() (MS-WIN) or pthread_getspecific() (PTHREAD) are used.
OS2 gives quite interesting TLS functionality which seems to be quite fast
though it will be interesting to know how it is iplemented internally for
real multi CPU machines (if it depends on CPU exception then the
performance will be bad). We need TLS only for one pointer to HB_STACK
structure.
I haven't added any tricks like HB_THREAD_STUB in xHarbour to reduce
the cost of TLS access. If it will be necessary for some platform the we
can add it.
Except TLS Harbour threads needs OS support for non recursive mutexes or
critical sections and conditional variables. If platforms does not support
conditional variables (f.e. MS-Win or OS2) then they can be emulated using
multistate semaphores. I intentionally didn't create code which may need
recursive mutexes. The non recursive ones are often faster and some
platforms may not support recursive mutexes so they will have to be
emulated by us.
Harbour uses reference counters for complex variables. It means that even
readonly access to complex item causes internal write operations necessary
to increment/decrement its reference counter. To make such readonly access
MT safe we have to make incrementation and decrementation with result
checking atomic. By default it's done by mutex inside vm/fm.c but some
platforms have native support for atomic inc/dec operations, f.e.
Interlocked*() functions in MS-Win. If they are available then such
functions should be used to not reduce the performance by mutex call
very often used functions. For many CPUs it should be quite easy to
implement such atomic inc/dec functionality in assembler. F.e. for
GCC and x86@32 it may looks like:
static __inline__ void hb_atomic_inc32( volatile int * p )
{
__asm__ __volatile__(
"lock incl %0"
:"=m" (*p) :"m" (*p)
);
}
static __inline__ int hb_atomic_dec32( volatile int * p )
{
unsigned char c;
__asm__ __volatile__(
"lock decl %0"
"sete %1"
:"=m" (*p), "=qm" (c) :"m" (*p) : "memory"
);
return c == 0;
}
and then it's enough to define in hbthreads.h:
#define HB_ATOM_INC( p ) hb_atomic_inc32( ( volatile int * ) p )
#define HB_ATOM_DEC( p ) hb_atomic_dec32( ( volatile int * ) p )
Probably I'll make it for some most popular CPUs in the future.
In Harbour each thread which wants to call HVM functions have to allocate
it's own HVM stack. It's done hb_vmThreadInit(). The HVM stack is freed
by calling hb_vmThreadQuit(). This functions can be called also by 3-rd
party threads if they want to call HVM functions or execute .prg code.
Calling HVM functions without allocated stack will cause GPF.
I moved most of static variables to HVM stack to make them thread
local. But some of them like FS errors have their own alternative
copy which is used when thread does not allocate HVM stack. It allows
to use hb_fs*() functions without HVM stack but programmer have to
know that error codes return by hb_fs*Error() functions can be
overwritten by other threads which also didn't allocated HVM stack.
To execute garbage collector scan and mark pass it's necessary to
stop other HVM threads. Otherwise the scan may give false results.
It's also possible to not stop threads but protect with mutex all
operations on GC items but it will probably cause performance reduction
and will force some other modifications. Maybe I'll implement it
in the future.
I didn't use any OS level thread KILL or CANCEL calls. All HVM threads
have to be cleanly removed without any resource leaks.
QUIT command terminate only calling thread. If main (startup) HVM
thread call QUIT then it sends QUIT request to all existing threads.
In QUIT state ALWAYS statements and destructors are executed.
New thread is created by:
hb_threadStart( <@sStart()> | <bStart> [, <params,...> ] ) -> <pThID>
The returned value is a pointer to internal thread structure which
can be used in JOIN or DETACH operations. Each thread should be Joined
or DETACHED to avoid resource leaks. If programmer does not store
<pThID> or all instances of <pThID> are destroyed then thread is
automatically detached. I do not know clear method of thread detaching
in OS2. If some OS2 users knows it then plase update vm/hbthread.c.
When thread terminates then all locked by this thread mutexes are
released.
Each thread uses its own memvars (PRIVATEs and PUBLICs) and work areas.
When new thread is created then it inherits from parent thread:
- code page
- language
- SETs
- default RDD
error block is initialized to default value by calling ERRORSYS()
and PUBLIC variable GetList := {} is created.
The following objects are initialized to default value:
- error block
- math error handler and math error block
- macro compiler features setting (hb_setMacro())
or move them to SETs.
We can think about inheriting them. It's also possible to add
inheriting of all visible memvars but I do not know it's good
idea.
Compilation and linking:
For MT mode HVM library should be compiled with HB_MT_VM macro.
GNU make automatically creates hbvmmt library which should be
linked with Harbour MT programs instead of hbvm.
Non GNU make files should be updated.
If given compiler support TLS then you can try to set HB_USE_TLS
to force using native compiler TLS support. Now it's enabled by
default only for BCC. For Linux and GCC builds it may depend also
on used GLIBC version. In older system there is no TLS support
at all or TLS works only for shared binaries so I haven't enabled
it. If you will test some other compiler then please add default
native TLS support for them in hbthread.h
Users using hb* scripts can simply use -mt switch when they want
to create MT program, f.e.:
hbmk -n -w3 -es2 -mt mttest01.prg
There are still some minor things which should be done but I'll
do them later. Current state seems to be fully functional.
The most important and still missing is our own file lock server
for RDD synchronization in POSIX systems. Kernel internally
recognize POSIX locks by PID and file i-node - not PID and file
handle. It means that the same file open more then once by one
process shares locks. Because POSIX locks can be overwritten
then we do not have any synchronization between aliased workareas
or threads using the same table in *nixes. We have to make
synchronization ourselves. I'll create such lock server ASAP.
Please test and enjoy using Harbour threads.
* harbour/source/rdd/dbfntx/dbfntx1.c
* harbour/source/rdd/dbfcdx/dbfcdx1.c
! fixed dirty index reading, thx Miguel for bug report
* harbour/source/compiler/hbmain.c
* removed old comment and hack
* contrib/hbziparch/hbziparc.h
* contrib/hbziparch/hbziparc.c
* contrib/hbziparch/hbzipnew.cpp
* contrib/hbziparch/hbxdirec.c
% Cleanups: Unused headers, types, one #define,
one BCC582 warning, one Linux/GCC/MinGW #ifdef oddness.
; NOTE: Need to test this on Linux.
* utils/hbmake/hbmake.prg
; Applied cleanup and fix patch from Bill Robertson:
! LIBFILES -> HBLIBS
EXTERNLIB -> CONTRIBLIB
EXTLIBFILES -> CONTRIBLIBS
* ALLLIB = $(USERLIBS) $(LIBFILES) ... ->
ALLLIB = $(USERLIBS) $(CONTRIBLIBS) $(HBLIBS) ...
% Removed CONTRIBLIB = YES from makefile output as it did nothing.
% Combined two ShowHelp() secs into one and put together
with ShowCredits() at top of program.
% Simplied Flag checks somewhat but it's still awkward. I fixed
a mingw bug where a flag was set to .t. in one place and .f.
later because of inconsistent use of letters, capitals/lower, etc.
Still lots of checking for lower(...), upper(...), etc. of the
command-line params.
* Changed Help screen to reflect current program options better.
* Made some alert message a little clearer and minor formatting.
! Initalized s_nMakeFileHandle to F_ERROR and reset it to F_ERROR
whenever the file was closed. Didn't seem to be a current problem,
just good practice.
* utils/hbmake/hbmake.prg
* Removed separate /credits switch and added content to
main help screen.
% Removed a few CLS commands from command-line orientated
places.
% Removed -elx and -ex from help screen (as these are the
same as -el and -e). They are still accepted though.
* source/compiler/hbusage.c
+ Added Bill Robertson to credits list.
* include/hbinit.h
* source/rtl/gtwin/gtwin.c
* source/rtl/gtwvt/gtwvt.c
* source/compiler/genc.c
+ Enabled init functions for MSVC 64-bit in C mode.
; NOTE: You get the idea, please comment. If there is
no simpler/easier/shorter way to achieve this,
I'll update the rest 150 files, too.
* harbour/source/compiler/hbmain.c
! reset class and functions static declarations to avoid GPF
when more then one file is compiled with -w3 switch
NOTE: Whole this code will have to be removed and written
from scratch
* include/hbsetup.h
! Fixed problem where Darwin autodetection went wrong
between 1.0.0rc2 -> 1.0.0.
* HB_OS_DARWIN added to the HB_OS_UNIX detection list.
(no functional difference, just makes it more clear.)
% HB_OS_OS2_EMX removed. It was unused.
* source/compiler/gencobj.c
* include/hbsetup.h
% Removed OS_DOS_COMPATIBLE.
It's equivalent to !defined(HB_OS_UNIX_COMPATIBLE).
