Ros-dev

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5790 discussions

by Myria

IsPowerOf2 in the kernel is badly inefficient. It should be this: __inline BOOLEAN IsPowerOf2(IN ULONG Number) { if (Number == 0) return FALSE; return (Number & (Number - 1)) == 0; } Not that this function is called frequently, shrug. Melissa

19 years, 3 months

Re: [Freedce-devel] pthread_clear_exit_np()

by Luke Kenneth Casson Leighton

okay, so these are the options: 1) forget redhat and forget them ever being helpful and supporting strategically important free software projects, and go back to using dcethreads posix draft 4 "emulation". 2) forget redhat and forget them ever being helpful and supporting strategically important free software projects, and put the cancellation "wrapper" side back into the dcethreads library - just keep the same posix "final draft" API. lord only knows what would happen on pthreads-win32 when compiling freedce with mingw32, with the "wrapper" stuff back in, but i'd be fascinated to find out. 3) think of ways to persuade the developers of glibc to enter into reasonable conversations and dialog to help support a strategically important free software project. how does any other project manage this (and what in hell's name prompted ulrich to be so dismissive?) On Fri, Apr 21, 2006 at 05:26:44PM +0200, thomas.schuetzkowski(a)web.de wrote: > Hi Luke, > > > > To make this work with libc we need to "un-cancel" a thread. > > ... > > Of course, using this in a third-party application is problematic as it > > depends on internal glibc structures. > > > > I know the chances of such an API being added to glibc are about nil, but > > I thought I'd mention this anyway! :-) > > We thought about adding a detection of the glibc version to autoconf stuff and choose the right version of the function. (see Loic's patch) > Then of course someone has to maintain this for every new version of glibc. :-( > > This idea was skipped, because no one had the time to do this. > > regards, > Thomas > _______________________________________________________________ > SMS schreiben mit WEB.DE FreeMail - einfach, schnell und > kostenguenstig. Jetzt gleich testen! http://f.web.de/?mc=021192 > -- -- lkcl.net - mad free software computer person, visionary and poet. --

19 years, 3 months

How does NTVDM allocate the zero page?

by Myria

How does NTVDM allocate memory at address 0 for the V86 IDT? Is it different in reactos vs. Windows? NtAllocateVirtualMemory won't allow that. Melissa

19 years, 3 months

Log off Crash

by James Tabor

Hi! Running at revision 21793, is this bug known to anyone? Doesn't happen often. Thanks, James (dll/ntdll/ldr/utils.c:1193) LdrGetExportByName(): failed to find mxdMessage (dll/ntdll/ldr/utils.c:2018) Failed to create or open dll section of 'msacm.drv' (Status c0000135) (dll/ntdll/ldr/utils.c:2018) Failed to create or open dll section of 'midimap.drv' (Status c0000135) (./subsystems/win32/win32k/objects/gdiobj.c:600) Attempted to free global gdi handle 0xe0500c1, caller needs to get ownership first!!! (./subsystems/win32/win32k/objects/gdiobj.c:600) Attempted to free global gdi handle 0x3e050301, caller needs to get ownership first!!! (lib/rtl/exception.c:75) RtlRaiseStatus(Status 0xc0000005) (./subsystems/win32/win32k/ntuser/message.c:1109) Failed to copy message to kernel: invalid usermode buffer (dll/win32/shell32/dialogs.c:420) LogoffWindowsDialog is UNIMPLEMENTED (./subsystems/win32/win32k/ntuser/window.c:648) thread cleanup: while destroy wnds, wnd=0x9e1bedac (./subsystems/win32/win32k/ntuser/window.c:648) thread cleanup: while destroy wnds, wnd=0x9e1bee9c (./subsystems/win32/win32k/ntuser/window.c:648) thread cleanup: while destroy wnds, wnd=0x9e1bef94 (./subsystems/win32/win32k/ntuser/window.c:648) thread cleanup: while destroy wnds, wnd=0x9e1bf08c (./subsystems/win32/win32k/ntuser/window.c:648) thread cleanup: while destroy wnds, wnd=0x9e1bf914 (./subsystems/win32/win32k/ntuser/window.c:648) thread cleanup: while destroy wnds, wnd=0x9e1bfb0c (./subsystems/win32/win32k/ntuser/window.c:648) thread cleanup: while destroy wnds, wnd=0x9e1c00ec (./subsystems/win32/win32k/objects/gdiobj.c:805) Attempted to lock object 0x80063 that is deleted! KeBugCheckWithTf at ntoskrnl/ke/i386/exp.c:1241 A problem has been detected and ReactOS has been shut down to prevent damage to your computer. The problem seems to be caused by the following file: ntoskrnl.exe Technical information: *** STOP: 0x0000001E (0xc0000005,0x80067d3a,0x00000000,0xfffffffc) *** ntoskrnl.exe - Address 0x80067d3a base at 0x80000000, DateStamp 0x0 Page Fault Exception: 14(2) Processor: 0 CS:EIP 8:80067d3a <ntoskrnl.exe:67d3a (ntoskrnl/ex/i386/fastinterlck_asm.S:580 (InterlockedDecrement))> cr2 fffffffc cr3 3cb2e000 Proc: 813df968 Pid: 70 <csrss.exe> Thrd: 817b0158 Tid: a4 DS 23 ES 23 FS 30 GS 0 EAX: ffffffff EBX: 00000001 ECX: fffffffc EDX: 00000001 EBP: 9ed9ebb4 ESI: 8d6d8328 ESP: 9ed9eb3c EDI: 00000003 EFLAGS: 00010297 kESP 9ed9eb3c kernel stack base 9ed99000 Frames: <win32k.sys:3dd22 (./subsystems/win32/win32k/eng/xlate.c:280 (IntEngCreateXlate))> <win32k.sys:71df3 (./subsystems/win32/win32k/objects/brush.c:64 (IntGdiCreateBrushXlate))> <win32k.sys:8bec8 (./subsystems/win32/win32k/objects/dc.c:2126 (NtGdiSelectObject))> <win32k.sys:8c1a1 (./subsystems/win32/win32k/objects/dc.c:2327 (DC_InitDC))> <win32k.sys:8ca37 (./subsystems/win32/win32k/objects/dc.c:923 (IntGdiCreateDC))> <win32k.sys:4ff56 (./subsystems/win32/win32k/ntuser/windc.c:121 (DceAllocDCE))> <win32k.sys:54678 (./subsystems/win32/win32k/ntuser/windc.c:441 (UserGetDCEx))> <win32k.sys:6498f (./subsystems/win32/win32k/ntuser/painting.c:770 (NtUserBeginPaint))> <ntoskrnl.exe:652b7 (ntoskrnl/ke/i386/trap.s:306 (KiFastCallEntry))> <win32csr.dll:5779 (subsystems/win32/csrss/win32csr/desktopbg.c:57 (DtbgWindowProc))>

19 years, 3 months

[ros-diffs] [janderwald] 21793: implement notepad view status bar - TODO: update caret position on arrow key/mouse scroll events

by James Tabor

Hi! --- trunk/reactos/base/applications/notepad/notepad.h (original) +++ trunk/reactos/base/applications/notepad/notepad.h Wed May 3 20:17:12 2006 @@ -5,7 +5,9 @@ #include <stdio.h> #include <windows.h> #include <commdlg.h> +#include <commctrl.h> #include <tchar.h> +#include <Richedit.h> #include "main.h" #include "dialog.h" [PCH] obj-i386/base/applications/notepad/notepad.h.gch base/applications/notepad/notepad.h:10:22: Richedit.h: No such file or directory make[1]: *** [obj-i386/base/applications/notepad/notepad.h.gch] Error 1 make[1]: Leaving directory `/home/ros/reactos' This patch breaks compile on a linux box! Please fix and remember!, This is a multi compiled platform operating system! So DoN't uSe CaSe! 8^D Thanks, James

19 years, 3 months

[lukeh@padl.com: NPTL and FreeDCE]

by Luke Kenneth Casson Leighton

guys, hi, am on the mailing list (subscribed) but am not receiving posts: please cc me if this would be an issue. for win32, i am using pthreads-win32: will reactos be able to support the trick that luke howard is referring to? l. ----- Forwarded message from Luke Howard <lukeh(a)padl.com> ----- Envelope-to: lkcl@localhost Delivery-date: Mon, 24 Apr 2006 12:51:50 +0100 X-Original-To: lkcl(a)lkcl.net Resent-Date: 24 Apr 2006 10:22:43 -0000 From: Luke Howard <lukeh(a)padl.com> Organization: PADL Software Pty Ltd To: freedce-devel(a)lists.sourceforge.net Subject: NPTL and FreeDCE Cc: opendce(a)opengroup.org Reply-To: lukeh(a)padl.com Versions: dmail (bsd44) 2.6d/makemail 2.10 X-Spam-Status: NO, hits=-5.60 required=5.00 X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on au.padl.com X-Spam-Flag: NO X-Spam-Level: Resent-Message-ID: <UQB5HC.A.7PG.ubKTEB@mailman> Resent-To: opendce(a)opengroup.org Resent-From: opendce(a)opengroup.org X-Mailing-List: opendce:archive/latest/626 Resent-Sender: opendce-request(a)opengroup.org X-hands-com-MailScanner: Found to be clean X-MailScanner-From: opendce-request(a)opengroup.org Resent-Date: Mon, 24 Apr 2006 12:51:50 +0100 It may be possible to integrate DCE exception handling and NPTL so that longjmp() is never explicitly called from a cancellation cleanup handler. In fact, cleanup handlers need not be used at all. This approach requires the NPTL r ather than the LinuxThreads, API and is orthogonal to the previous issue about removing thread cancellation (that was a runtime issue present with NPTL regardless of which header one compiles against). Instead of calling _pthread_cleanup_push_defer(), we can store a __pthread_unwind_buf_t in the exception context and call __sigsetjmp() and __pthread_register_cancel_defer(). If __sigsetjmp() returns from a longjmp(), then we call dce_pthread_test_exit_np() to test whether the thread was cancelled, and set the current exception to pthread_cancel_e if necessary. No cleanup handler is necessary. The trick is that the code that raises an exception needs to call the internal API __pthread_unwind(), rather than longjmp(). Of course this ends up calling longjmp() anyway but hopefully does the right thing with respect to any other cleanup handlers that are registered. Another idea is to use the _Unwind_XXX API, but this strikes me as a little ambitious for now and I don't have any desire to interleave C++ and DCE exceptions. /* * For the NPTL API we share a setjmp/longjmp buffer between the * pthreads cancellation and DCE exception handling APIs. * * Note that we never actually call the cancellation function, we * just change the current exception context directly; this is the * same as calling dce_ptdexc_raise(&pthread_cancel_e) except that * __pthread_unwind() is not called. */ #define dce_exc_cleanup_push(cu, routine, arg) do \ { \ __exc_occured = __sigsetjmp((struct __jmp_buf_tag *)(cu)->__cancel_buf.__cancel_jmp_buf, 0); \ if (__exc_occured) \ { \ void *__status; \ \ if (dce_pthread_test_exit_np(&__status) == PTHREAD_STATUS_EXIT_NP \ && __status == PTHREAD_CANCELED) \ __exc_ctxt.exc = &pthread_cancel_e; \ } \ else \ { \ __pthread_register_cancel_defer(&(cu)->__cancel_buf); \ } \ } while (0) #define dce_exc_cleanup_pop(cu, execute) do \ { \ __pthread_unregister_cancel_restore(&(cu)->__cancel_buf); \ } while (0) /* make this a NOOP because we called it above */ #define dce_exc_setjmp(jmpbuf, val) /* we call __pthread_unwind() directly from dce_ptdexc_raise() */ #undef dce_exc_longjmp -- Luke -- ----- End forwarded message ----- -- -- lkcl.net - mad free software computer person, visionary and poet. --

19 years, 3 months

Re: [ros-bugs] [Bug 1185] OOo2 fails to install with an msi error.

by Magnus Olsen

This bug is on our side we can not test oo2 installer current in trunk. lest last time I try 1-2 Month back. for Reactos was to unstable to confrim if this bug still exists or not. It should not exits any longer. ----- Original Message ----- From: <ReactOS.Bugzilla(a)reactos.org> To: <ros-bugs(a)reactos.org> Sent: Tuesday, May 02, 2006 5:43 PM Subject: [ros-bugs] [Bug 1185] OOo2 fails to install with an msi error. > http://www.reactos.org/bugzilla/show_bug.cgi?id=1185 > > > > > > ------- Comment #7 from w3seek(a)reactos.com 2006-05-02 17:43 CET ------- > What's the status on this bug? Has the missing feature been implemented in > WINE? > > > -- > Configure bugmail: http://www.reactos.org/bugzilla/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are the QA contact for the bug, or are watching the QA contact. > You are the assignee for the bug, or are watching the assignee. > _______________________________________________ > Ros-bugs mailing list > Ros-bugs(a)reactos.org > http://www.reactos.org/mailman/listinfo/ros-bugs

19 years, 3 months

Summer of Code

by Nate DeSimone

Hello Everyone, I've been lurking on this list for a few years and I'm considering applying for the Google Summer of Code 2006. I am a Computer Systems Engineer at Rensselaer Polytechnic Institute, just finishing up my junior year. My GPA is 3.06, and I have taken a good amount of computer science courses including Data Structures and Algorithms and Database Systems. I have programmed in C, C++, C#, VB, Perl, PHP, Java and Javascript before. I'm also familiar with Sybase and MySQL and HTML design. I have also done some Win32 programming on my spare time, you can look at some of my projects at: http://www.rpi.edu/~desimn <http://www.rpi.edu/%7Edesimn> I have never done kernel mode programming before and I'm not certain if I'm quite ready for it yet, so if possible I would like to stay in the user mode space. The enhance explorer and add "wow factor" sounds interesting to me. Is there anything else that would involve at least almost all user mode work? Also I was wondering, approximately how many hours would you expect me to put forth every week should I be accepted? Thank You, Nate DeSimone

19 years, 3 months

need help debugging

by Peter Quiring

Hi all, I'm new to ROS but I've had a few patches accepted to Wine. I'm having difficulty with the website and I can't seem to login (even after enabling multisession) so I can't use bugzilla or the forums. So anyways, I've got ROS to compile (RosBE is great!)/build/install on two systems but I'm getting the following problems on one system (Dell Inspiron 5150 Laptop): During install it shows a 17592185991168 MB unused space partition after my 60 GB FAT32 partition. But install still works okay. During 1st boot I get a bsod, I don't have a COM port (USB only) so I tried to use the SCREEN output option but it's too fast to read. I've try to use the FILE option but only 600+ bytes are written to the debug.log file. I know the cache_manager isn't being flushed because everytime it crashes the contents of the folders in "Documents & settings" folder are corrupt (ie: "All Users.Reactos", etc.) So my question is : How can I disable the cache_manager? Or can I place sync() commands somewhere in the source for testing. (is there such a function available?). The bsod seems to be related to gdi issues during creating the primary surface. Somewhere the DeviceObject for the screen is NULL and is not caught till it causes a GPE much later. I'll give a little info that I've written down. /ntoskrnl/io/irp.c:570 - GPE /ntoskrnl/io/irp.c:911 /subsystems/win32/win32k/objects/dc.c:693 /subsystems/win32/win32k/ntuser/winsta.c:348 /subsystems/win32/win32k/ntuser/guicheck.c:57 /subsystems/win32/win32k/objects/dc.c:853 /subsystems/win32/win32k/ntuser/windc.c:121 /subsystems/win32/win32k/ntuser/windc.c:441 /subsystems/win32/win32k/ntuser/windc.c:529 /subsystems/win32/win32k/ntuser/windc.c:101 /ntoskrnl/ke/traps.c:306 /dll/win32/user32/windows/dialog.c:696 Hope this helps. I was using the lastest SVN at the time (21738 I think). Thanks. Peter Quiring

19 years, 3 months

two new bugs in newer ROS

by theUser BL

Hi! There existing two bugs from which I know, which existing not in older SVN/CVS-Snapshot ROS versions. Windows Tetris don't show the Highscore correct. With build 21549 there was still all ok. But with 21639 and all above the Highscore shows only curios symbols as text. AbiWord no longer runs. On build 21323 still all runs correct. But with 21549 the complete ROS hangs up. It ends with "A problem has been detected and ReactOS has been shut down to prevent damage to your computer APC_INDEX_MISMATCH" And so on. Don't know if in the current CVS/SVN-Version the bugs are already fixed. But they existing for some days/weeks. Greatings theuserbl

19 years, 3 months

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