* harbour/source/rdd/wacore.c
; updated comments about xbase++ behavior in dbRelease()
* harbour/include/hbvm.h
* harbour/source/vm/hvm.c
* harbour/source/vm/dynlibhb.c
* harbour/source/vm/runner.c
! added MT protection for HB_LIBLOAD()/HB_LIBFREE() and
HB_HRBLOAD()/HB_HRBUNLOAD(). Please remember that you should
not use any external LoadLibrary() functions because they are
not protected for clean PCODE modules loading/unloading even
in ST mode. Using them can cause HVM internal structure corruption.
If we have such functions in contrib then they should be redirected
to our HVM ones.
There is still one problem in MT mode which has to be resolved yet.
When dynamic library containing PCODE using static variables
is loaded 1-st time then it will force resizing of internal array
with static variables. If in exactly the same moment some other
thread operates on static variable then it may cause corruption.
To resolve this problem we will have to divide continuous memory
block common for all modules where we store all static variables
into separated blocks bound with each PCODE module (symbol table).
* harbour/source/vm/dynlibhb.c
+ added support for DLL loading/unloading in OS2 builds.
Based on xHarbour code by Maurilio Longo - please test.
* harbour/source/vm/thread.c
+ added small description for hb_threadOnce() .prg function
* harbour/include/hbthread.h
! do not set TLS in POCC and XCC builds when _MSC_VER macro is set
This compilers also have this macro but dllspec( thread) does
not work for them (at least in version 4.50.15)
* harbour/utils/hbtest/rt_hvm.prg
+ added few tests which exploit by DMC bug. Be careful with
this compiler. In some cases it gives buggy final code, f.e.
try this:
#include <stdio.h>
typedef struct
{
double dd;
long long int ll;
} UN;
const char * cmp( UN * pU )
{
return pU->dd >= pU->ll ? "OK" : "ERRROR";
}
int main( void )
{
UN u = { 10.50, 10 };
printf( "%s\n", cmp( &u ) );
return 0;
}
The same bug can be exploited also by final Harbour binaries
compiled by DMC in code like:
? iif( 10.50 >= 10, "OK", "ERROR" )
I used DMC 8.42n. As long as such things will not be fixed by
DMC developers this compiler is not supported by Harbour and
reported problems with DMC Harbour builds will have to be
ignored by us.
* harbour/include/hbclass.ch
* harbour/source/vm/classes.c
* harbour/source/rtl/tobject.prg
* harbour/source/rtl/tclass.prg
! fixed race condition when class function is called 1-st time
and new class is created. It was possible that more then one
thread execute this function simultaneously and two classes
identical classes but with different handles were created
and registered in HVM
* harbour/contrib/xhb/xhbcomp.prg
* updated hack with optional inheritance for new class code
* 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
* source/rtl/teditor.prg
+ Added :LineCount(), :ExitState() methods.
* Changed to use hb_MemoWrit() to write text content to
disk, to avoid Chr(26) to be appended.
! Fixed :InsertState() to also modify physical cursor state.
! Fixed :BrowseText() to not go into an infinite loop in
view mode.
* source/rtl/memofile.c
! Minor formatting.
* ChangeLog
! Fixed yesterday's entry dates.
* harbour/source/vm/hvm.c
! execute hb_vmThreadQuit() after hb_vmStackRelease()
* harbour/source/vm/thread.c
* do not destroy critical sections on exit
* make_b32.mak
* make_vc.mak
* make_gcc.mak
! Minor formatting.
* include/hbapierr.h
! Fixed casting in macro HB_ERR_FUNCNAME, as it was
generating a new warning with MSVC in 64-bit mode.
'( ( char * ) 1 )' -> '( ( const char * ) NULL + 1 )'
('const' keyword was not enough to silence it)
* include/hbapierr.h
* source/rtl/errorapi.c
- Disabled (marked with HB_LEGACY_LEVEL) hb_errFuncName
symbol. No longer supported, pls use HB_ERR_FUNCNAME
instead.
* harbour/include/hbthread.h
* casting cleanup
* harbour/include/hbapigt.h
* harbour/source/rtl/gtapi.c
* harbour/source/rtl/scroll.c
* harbour/source/rtl/console.c
* harbour/source/rtl/box.c
* changed hb_gtDrawBox() and hb_gtPutText() to operate on color
number (index in some GTs) instead of color string
* use int as color number (index) in hb_gtScrollEx() hb_gtBoxEx()
* harbour/source/rtl/box.c
% changed DISPBOX() with color and frame string to work as one
GT atomic operation
* harbour/source/vm/classes.c
! fixed profiler usage
* harbour/source/rtl/tget.prg
! fixed cursor positioning when new get item is added.
; added note about possible modification - Viktor, please verify it
* harbour/source/common/expropt2.c
* formatting and minor cleanup
* harbour/source/rtl/gtapi.c
% do not set and restore default color set in hb_gtPutText() and
hb_gtDrawBox() but decode colors from passed string
* include/hbextern.ch
+ New functions added.
* source/rtl/alert.prg
% Minor optimization.
; NOTE: Found yet another hidden extension in Alert() code :(
* source/rtl/radiobtn.prg
! Fix and optimization in recent modification.
* harbour/include/hbapigt.h
* harbour/source/rtl/gtapi.c
+ added C functions hb_gtLock() and hb_gtUnlock()
They block current GT for other threads
* harbour/source/rtl/gtfunc.c
+ added PRG functions hb_gtLock() and hb_gtUnlock()
They block current GT for other threads - be careful using them
and always unlock locked GT
* harbour/source/rtl/scroll.c
+ added HB_SCROLL() function - it works like SCROLL() but supports
2 additional parameters: color and erase char. It's stateless and
atomic in GT access
* harbour/source/rtl/tbrowse.prg
* use HB_SCROLL() instead of SCROLL(). Now whole TBROWSE class
does not depend on other thread screen output and does not
set any GT variables except of cursor positioning to active
cell when it's enabled
* harbour/source/rtl/memoedit.prg
* harbour/source/rtl/tgetlist.prg
* harbour/source/rtl/tlabel.prg
* harbour/source/rtl/listbox.prg
* harbour/source/rtl/tmenusys.prg
* harbour/source/rtl/achoice.prg
* harbour/source/rtl/profiler.prg
* harbour/source/rtl/teditor.prg
* use atomic stateless functions when possible - this code should
be checked and updated by some who know it.
* harbour/source/rtl/scrollbr.prg
* harbour/source/rtl/getsys.prg
* harbour/source/rtl/tpopup.prg
* harbour/source/rtl/tgetlist.prg
* harbour/source/rtl/radiogrp.prg
* harbour/source/rtl/listbox.prg
* harbour/source/rtl/checkbox.prg
* harbour/source/rtl/browse.prg
* harbour/source/rtl/tget.prg
* harbour/source/rtl/ttopbar.prg
* harbour/source/rtl/pushbtn.prg
* harbour/source/rtl/tmenusys.prg
* harbour/source/rtl/achoice.prg
* harbour/source/rtl/teditor.prg
* harbour/source/rtl/radiobtn.prg
* harbour/source/rtl/tbrowse.prg
* replaced DispOut() with hb_dispOut()
* replaced DispBox() with hb_dispBox()
% removed saving and restoring of cursor position in places where
it's not longer necessary due to hb_dispOut()/hb_dispBox() usage
% removed saving and restoring of SetColor() value in places where
it's not longer necessary due to hb_dispOut()/hb_dispBox() usage
% removed saving and restoring of MSetCursor(). If it's necessary
low GT driver should hide and redraw mouse cursor before and after
screen update. We do not have to make it manually
The above modification gives faster code and allow to access screen
from different threads simultaneously because functions like
hb_dispOut() and hb_dispBox() are stateless and atomic in screen
access. Not all .prg code has been updated yet. If someone is
familiar with this code then please help. I'll add yet HB_SCROLL()
function which will support additionally colors.
Viktor if possible please verify this modifications.
* harbour/include/hbapigt.h
* harbour/source/rtl/gtapi.c
+ added hb_gtDrawBox() works like hb_gtBox() but does not change cursor
posiion and support colors
+ added support for color parameter to hb_gtPutText()
* harbour/source/rtl/console.c
* use new hb_gtPutText() format in HB_DISPOUTAT()
Now all screen operations inside this function is one atomic
operation for other threads
* harbour/source/rtl/box.c
+ added HB_DISPBOX() function - works like DISPBOX() bit does not
change cursor position and is atomic for other threads
* harbour/include/hbapigt.h
* harbour/include/hbgtcore.h
* harbour/source/rtl/hbgtcore.c
* harbour/source/rtl/gtclip.c
* harbour/source/rtl/gtdos/gtdos.c
* harbour/source/rtl/gtwin/gtwin.c
* harbour/source/rtl/gtxwc/gtxwc.c
* harbour/source/rtl/gtcrs/gtcrs.c
* harbour/source/rtl/gtstd/gtstd.c
* harbour/source/rtl/gtsln/gtsln.c
* harbour/source/rtl/gttrm/gttrm.c
* harbour/source/rtl/gtpca/gtpca.c
* harbour/source/rtl/gtcgi/gtcgi.c
* harbour/source/rtl/gtwvt/gtwvt.c
* harbour/contrib/gtalleg/gtalleg.c
* harbour/contrib/gtalleg/ssf.h
* harbour/contrib/gtalleg/ssf.c
* harbour/contrib/gtwvg/gtwvg.c
* cleanup char * casting
* harbour/source/rtl/filesys.c
! do not use pread()/pwrite() in OpenWatcom Linux builds
* harbour/source/vm/hvm.c
* reduced the mutex lock time in thread exit state
* harbour/source/vm/thread.c
; added note about possible behavior of hb_threadSelf() function
in one very specific situation. It's documented and expected
behavior
* harbour/source/rtl/hbgtcore.c
+ added support for retrieving current HB_GTI_NOTIFIERBLOCK code block
+ added support for removing HB_GTI_NOTIFIERBLOCK code block without
setting the new one
* harbour/source/vm/garbage.c
* unblock HVM before executing destructors and releasing blocks
* harbour/source/vm/fm.c
! do not call internal error with active lock when FM statistic
is enabled
* harbour/source/vm/thread.c
! stop other threads in hb_threadOnce() if the 1-st one
executes bAction block to be sure that it will be completed
before thread leave hb_threadOnce() function
* harbour/source/vm/set.c
! do not call hb_inkeyReset() in set release. It's not necessary
and it could change keyboard buffer size for other threads using
the same GT driver.
* harbour/source/vm/hvm.c
% allocate new thread stack without lock
* harbour/source/rtl/hbgtcore.c
* harbour/source/rtl/gtapi.c
* moved clipboard resetting from hbgtcore.c to gtapi.c
* harbour/source/rtl/filesys.c
! do not use read/write operations with given file offset in Win9X
which seems to not support such functionality
* harbour/include/hbvm.h
* harbour/source/vm/hvm.c
+ added hb_vmProcessDynLibSymbols() which works like
hb_vmProcessSymbolsEx() but always mark registered modules as
dynamic
* harbour/source/vm/maindllp.c
* redirect hb_vmProcessSymbolsEx() to hb_vmProcessDynLibSymbols()
* harbour/source/vm/thread.c
* disabled some low level locking code in non MT HVM mode
* harbour/include/hbgtcore.h
* harbour/source/rtl/hbgtcore.c
* harbour/source/rtl/gtapi.c
+ added new GT methods: LOCK() and UNLOCK()
* serialize GT access in MT mode - please remember that it's only
low level serialization to protect access to low GT resources.
It has nothing to application level screen output from different
threads which has to be serialized by programmer if necessary.
* harbour/source/rtl/tthreadx.prg
* use HB_THREAD_INHERIT_PUBLIC as thread attribute for thread
started by oThread:start() to emulate xbase++ PUBLIC variables
behavior
* harbour/include/hbapigt.h
* harbour/source/rtl/gtapi.c
+ added hb_gtPutText() C function
* harbour/source/rtl/console.c
+ added HB_DISPOUTAT() which works like DISPOUTAT but does not change
cursor position. xBase++ users can use
#xtranslate DispOutAt( <x,...> ) => hb_dispOutAt( <x> )
for xBase++ compatible code
* harbour/common.mak
* harbour/source/rtl/Makefile
+ added thfuncx.prg
* harbour/source/rtl/thfuncx.prg
+ added ThreadObject() function
* harbour/source/rtl/tthreadx.prg
+ added xBase++ compatible TThread class.
Special thanks to Pritpal Bedi for class skeleton with info about
xbase++.
Now only basic functionality is supported though it was enough to
compile and execute examples Pritpal sent. I'm leaving rest for
xBase++ users.
BTW The examples suggest that in xbase++ DispOutAt() does not change
cursor position. It's not Clipper compatible so I cannot make it
in Harbour though I can add new function which will work in such way.
* 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
* include/hbextern.ch
+ Added missing HB_DISABLEWAITLOCKS().
; NOTE: This looks like a hack to add FLX_WAIT flag
for locks app-wide, and on Windows systems only.
IMO we should not have such hacks in core, or if
this is really important it should support all
possible platforms.
It also has a low-level function equivalent,
which is missing from hbapifs.h. There is no
reference to these function in any Harbour or
xhb changelogs.
If there are no objections, I'd like remove
this functionality.
* source/rtl/hbrandom.c
* source/rtl/filesys.c
* Minor formatting.
* 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
* harbour/include/hbtypes.h
* harbour/source/vm/maindllp.c
! updated casting for current SVN code
[TOMERGE 1.0]
* harbour/include/hbthread.h
* harbour/source/vm/hvm.c
* harbour/source/vm/thread.c
+ added .prg function
hb_threadWait( <pThID> | <apThID>, [ <nTimeOut> ] [, <lAll> ] )
=> <nThInd> | <nThCount> | 0
This function wait for <nTimeOut> seconds (default infinite wait)
until one or all (controlled by <lAll> parameter) of given HVM threads
will have finished execution in HVM area. It does not join the threads.
It returns index to 1-st thread which has finished execution (default)
or number of threads which has finished in given time period when lAll
is .T.
* bin/bld.bat
* bin/bld_os2.cmd
+ Added support for HB_INSTALL_PREFIX.
+ Added experimental support for 'set HB_MT=MT' flag,
to create an MT executable.
* source/rtl/seconds.c
* Formatting.
* source/vm/cmdarg.c
* HB_ARGV() will now return the executable name if called
without a parameter.
! HB_ARGSTRING() fixed to return "" in some error
cases instead of NIL.
* 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.
* harbour/source/vm/runner.c
* harbour/source/vm/codebloc.c
* harbour/source/vm/itemapi.c
* minor casting modification
* harbour/tests/speedtst.prg
* added workaround for timeout parameter not working in xHb Subscribe()
when 3-rd parameter is passed
* harbour/include/hbstack.h
* harbour/source/vm/estack.c
* harbour/source/vm/hvm.c
% moved static USHORT uiPolls to HVM stack to not reduce the HVM
performance in MT mode. In multi CPU environment if many threads
try to change the same memory variable in the same time the overall
performance is strongly reduced on most of tested hardware - probably
some random CPU delay used to resolve the conflict.
* harbour/source/rtl/seconds.c
+ Added OS/2 section to secondsCPU(), but it does not work as expected :)
In particular, user and system times are kept per thread, but when a thread
dies the time it has spent in user and system-land gets lost, so the
overall running time of the program decreases. Not only, if I call
secondsCPU() before a thread starts and after it has ended I'll have
no idea of the time that was spent by that thread.
* include/hbapierr.h
* source/vm/extrap.c
* source/rtl/errorint.c
! Fixed recent modification on Windows platform, where
GPF would generate an internal error.
It didn't launch the OS error handler.
! Fixed hb_errInternal() being marked as HB_EXPORT
in the headers only.
* include/hbextern.ch
* source/rtl/inkey.c
+ Added HB_KEYCLEAR() a documented function equivalent
to "CLEAR TYPEAHEAD" command, or undocumented __KEYBOARD() function.
* contrib/rddads/rddads.h
* contrib/rddads/ads1.c
+ Added support for ADS_USE_OEM_TRANSLATION for old ads versions.
Borrowed from xhb/Pavel Tsarenko.
* harbour/include/Makefile
+ harbour/include/hbatomic.h
* harbour/include/hbthread.h
* harbour/source/vm/garbage.c
* harbour/source/vm/fm.c
* moved atomic and spinlock functions into hbatomic.h
* harbour/include/hbatomic.h
+ added atomic inc/dec for GCC and x86@64 and PPC@32
+ use OSAtomic*() and OSSpin*() functions for atomic inc/dec and
spinlocks in Darwin builds
+ added spinlocks to MS-Win builds
* harbour/source/vm/hvm.c
! fixed last commit typo in thread number allocating - all threads
where using 0 number
* harbour/source/vm/thread.c
! fixed return value in recursive call to hb_mutexLock() - was FALSE
! fixed typo in timeout parameter number
should be 2 instead of 1
* harbour/source/rtl/tobject.prg
! fixed init() return value - it should be ignored and current
object should be returned
* harbour/source/rtl/tthreadx.prg
! probably fixed timeout parameter use in signal:wait() method
I guess that like other xbase++ functions it's in 1/100th of
a second
* harbour/include/hboo.ch
* harbour/include/hbclass.ch
* harbour/source/vm/classes.c
* harbour/source/rtl/tclass.prg
+ added support for SYNC object and CLASS messages working like
in xBase++. Please remember that all locked by thread SYNC messages
objects and classes are unblocked automatically for the time which
thread spends in hb_subscribe[Now]() or signal:wait()
* include/hbapifs.h
* include/hbextern.ch
* source/common/hbfsapi.c
* source/rtl/hbfile.c
+ Added hb_fsNameExists() C level function.
+ Added hb_FNameExists() Harbour level function.
; Both will return true if any kind of directory entry
exists with the given name (IOW it doesn't matter
if it's a file or directory, or else).
* harbour/include/hbclass.ch
* harbour/include/hboo.ch
+ added SYNC attribute to accepted syntax in class declaration
it allows to compile code which uses this attribute but low
level implementation is not ready yet - work in progress
* harbour/source/vm/garbage.c
! added #define INCL_DOSPROCESS for OS2 builds. For some reasons
#define INCL_DOSDATETIME I've found in DosSleep() documentation
is note enough
* harbour/tests/speedtst.prg
* marked T054 as memory tests
* harbour/source/vm/hvm.c
* harbour/source/vm/thread.c
* added hb_threadOnce( @<onceControl> [, <bAction> ] ) -> <lFirstCall>
This function allow to execute some code only once. It's usefull in
MT environment for initialization.
<onceControl> is variable which holds the execution status and have
to be initialized to NIL. In most of cases it will be simple static
variable in user code.
<bAction> is optional codeblock which is executed only once (on 1-st
call with given <onceControl>)
* harbour/source/rtl/filesys.c
! do not make any file name conversions in hb_fsNameConv() if HVM stack
is not allocated
* harbour/source/rtl/gtcrs/gtcrs.c
* casting
