The cache manager rewrite I started years ago has finally appeared in
ReactOS' trunk and although at this point it's not quite perfectly
integrated, it's enough to boot up the bootcd or livecd. To check out
the more mature original, check out arty-newcc-reactos, branch
arty-newcc on bitbucket.org . Amine Khaldi encouraged me quite a bit
to not give up on it, and was able to reach out and be an advocate
when i really wasn't able to. Others agree that the time has come to
begin removing the old cache manager. I expect the remaining problems
in the version going to trunk will be taken care of relatively
quickly.
The motivation for this effort lies in the particularly hairy
relationship between ReactOS' cache manager and data sections. This
code completely removes page sharing between cache manager and section
and reimagines cache manager as being a facility layered on the memory
manager, not really caring about individual pages, but simply managing
data section objects where caching might occur.
It took me about 2 years to do the first pass of this rewrite and most
of this year to fix some lingering issues, properly implement demand
paging in ReactOS (code which didn't come with this patch in a
recognizable form), and finish getting the PrivateCacheMap and
SharedCacheMap relationship correct.
Currently, the new ntoskrnl/cache directory contains an own
implementation of data file sections. After things have settled down,
we can begin to deprecate and remove the parts of ReactOS' section
implementation that depend on a close relationship with cache
manager. Eventually, I think that the extra code added to
ntoskrnl/cache/section will be removed and ReactOS' own sections will
replace the use of the special MM_CACHE_SECTION_SEGMENT in the cache
path.
Note also, that this makes all cache manager (and new section parts)
use wide file offsets. If my section code were to take over other
parts of the ReactOS memory manager, they would also benefit from
these improvements.
I invite anyone who wants to to peek at this code and fix whatever
bugs can be found.
svn path=/trunk/; revision=49423
- Portcls does not need to set the size of the audio buffer for completed irps. This is done in a completion callback in wdmaud. Verified with WinXP portcls
[WDMAUD_KERNEL]
- Free allocated mdls in the io completion routine. Also free the associated stream header.
[KS]
- Replace all ms portcls hacks by one.
- MS Portcls is now working in ReactOS (which is nice for testing audio related bugs)
svn path=/trunk/; revision=49417
- Add dmusprop header
- Add IMP_PowerNotify macro to portcls.h
- Add IID_IMusicTechnology guid to portcls.h
- Add GTI_XXX macros to portcls.h
- Remove broken definitions of KSPROPSETID_Synth, KSPROPSETID_Synth_Dls. They are defined in dmusprop.h
- Add KSDATARANGE_MUSIC to ksmedia.h
- Add KSMUSIC_TECHNOLOGY, KSDATAFORMAT_SUBTYPE_MIDI_BUS, KSAUDFNAME_MIDI, KSNODETYPE_SYNTHESIZER to ksmedia.h
svn path=/trunk/; revision=49388
- Enumerate MIDI devices and provide all necessary functions to deal with them
[WDMAUD_KERNEL]
- Implement support functions which call the provided functions of mmixer library
- Fix a bug in device interface request ioctl handler
- Midi devices should now be visible, capabilities be retrieved and opened / close
- Writing data is not yet supported
svn path=/trunk/; revision=49376
Fix a bug in InitVideo: when looping through the adapters, reinitialize the cbValue before querying the registry.
Also handle failure.
svn path=/trunk/; revision=49360
- Do not leak KSSTREAM_HEADER (48 bytes) for each IOCTL_KS_WRITE_STREAM / IOCTL_KS_READ_STREAM request
- Audio stack should now leak less memory
svn path=/trunk/; revision=49356
Improve the code to enumerate monitors.
- Don't use custom MIN / MAX / ABS macros
- Calculate distance by r^2 = x^2 + y^2
- Use RECTL_bIntersectRect instead of code duplication
- Fix possible NULL pointer dereference
- pass bottom-right exclusive rect to IntGetMonitorsFromRect from NtUserMonitorFromPoint
- Don't handle MONITOR_DEFAULTTOPRIMARY and MONITOR_DEFAULTTONEAREST twice
- Use unsigned variables for unsigned values
- Don't check the result of a UINT returning function for < 0
- Improve readability
svn path=/trunk/; revision=49310
- Don't lie about page protection in MiQueryAddressState. Fixes PDFCreator-alike bugs.
See issue #5627 for more details.
svn path=/trunk/; revision=49296
