Difference between revisions of "User:Kr"

Revision as of 11:46, 7 September 2007

Contact

• Mail: mailto:Kay.Ramme@sun.com

Background

• Full name is Kay Ramme
• Uno (UDK) Project Lead of OOo
• Located in Hamburg, Germany
• Employed by Sun Microsystems

Some Thoughts

• User_talk:Kr/Parameterized Headers
• User_talk:Kr/UNO References
• /Software Continuum
• /On Modularization
• /On Streams
• /A Thread's Life
• /A DLL's Life

GullFOSS

• My Visions
• ODF being a Disruptive Technology
• Memory Savings by String internalization
• AAWAX or How to Check Out OpenOffice.org fast
• Updated Uno Web Pages
• The Java platform becoming Open Source

Some Scripts

• /Concurrent Checkout

Platforms

• http://en.wikipedia.org/wiki/Ubuntu_%28Linux_distribution%29
• http://en.wikipedia.org/wiki/Mac_OS_X

Misc

• My Linux Desktop Architects Meeting II presentation slides: Media:DAM2-OOo_1_1.odp
• My OOo Conf 2006 presentation slides: Media:OOoConf_2006_Cleaning_Up_Multi-Threading.odp
• A short presentation prepared for the OOo BOF at EuroOSCON2006: Media:EuroOSCON2006-OOo_Architecture.odp
• Broken __attribute__((constructor)) for gcc 3.3
  • http://www.opensource.apple.com/darwinsource/Current/libstdcxx-11/libstdcxx/NEWS
  • http://www.mail-archive.com/debian-gcc@lists.debian.org/msg06180.html
• "exit" libc API call is racy wrt to pthreads on some Systems, see User:Kr/exit_race.c

Open Source Economics

Articles

• Excellent interview with Jonathan Schwartz about Suns motivation regarding Open Source: http://blogs.cnet.com/8301-13505_1-9757417-16.html%5D
• An article on Open Source economics: http://badtux.org/home/eric/editorial/economics.php
• Another article on Open Source economics by Bruce Perens: http://perens.com/Articles/Economic.html
• The Economic Motivation of Open Source Software: Stakeholder Perspectives

Business Models

Some business models identified by me:

• Marketing instrument (brand awareness, capabilities).
• Enabler for other products (server software, hardware, solutions, consulting, service, support, books).
• Free only for consumers, commercials need to pay.

Notes

• "pthread_exit" and its relationship to process termination ...
  • "atexit" actually gets called by the last thread in a process
  • "pthread_exit" in "main" would actually be perfect, if it was allowing to pass another return value than zero ...
  • /Building OOo

My Efforts

Effort/Revise OOo Multi-Threading

• Tasks
  • review documentation, place tests and testers
  • rename Environment.pReserved -> pEnterable
  • do threading tests - with component, with the office
  • convert rest of office services to be thread unsafe - in progress
  • convert dtrans to thread affine?
  • Rename Threading Model impl to Threading Framework?
  • See if I can optimize the "identity mapping" somehow.
• Possible order of integration
  • in progress : VCL thread-transparency 1 - vclthreadtransparency1 - depends: bunoexttm
    • fix thread-affinity
    • DDE
    • Drag&Drop
    • Clipboard
  • open : Binary Uno new threading architecture - bunonewta - depends: bunoexttm
  • in progress : async dialogs 2 - asyncdialogs2 - depends: asyncdialogs
  • open : VCL thread-transparency 2 - vclthreadtransparency2 - depends: asyncdialogs2, vclthreadtransparency1
    • remove the Solar Mutex
  • open : new OOo threading architecture - ooonewta - depends: bunoexttm, vclthreadtransparency2

Move Uno stuff into the Uno Wiki. See Uno/Effort/Migrate Documentation

• Update udk.openoffice.org to reflect latest wiki changes.

Do a source code inventory

• Analysis/Source Code Inventory

Some Links

Event Driven Programming

• Some comments regarding Linux kevents etc.: http://lwn.net/Articles/225714/ Note: In my understanding the whole discussion is senseless, the way to go for awaiting events should certainly not be fd related, but should just use something as "sigwait" or similar. Please see also Architecture/Proposal/Advanced_Threading-Architecture.

Threading

• OOo Threading-Architecture specification
• Architecture/Proposal/Advanced Threading-Architecture
• COM - Processes, Threads and Apartments - "The key is to use multiple threads only if you are very sure of what you are doing." - http://windowssdk.msdn.microsoft.com/en-us/library/ms693344.aspx
• Designing and Building Parallel Programs - http://www-unix.mcs.anl.gov/dbpp/
• The Future of Programming - http://alarmingdevelopment.org/index.php?p=6
• Programming in the Age of Concurrency: Software Transactional Memory - http://channel9.msdn.com/showpost.aspx?postid=231495
• The Problem with Threads - http://www.computer.org/portal/site/computer/menuitem.5d61c1d591162e4b0ef1bd108bcd45f3/index.jsp?&pName=computer_level1_article&TheCat=1005&path=computer/homepage/0506&file=cover.xml&xsl=article.xsl
• Threads and memory model for C++ - http://www.hpl.hp.com/personal/Hans_Boehm/c++mm/
• Why Threads Are A Bad Idea (for most purposes) - http://home.pacbell.net/ouster/threads.pdf
• Swing: How to Use Threads - http://java.sun.com/docs/books/tutorial/uiswing/misc/threads.html
• A comment by Graham Hamilton on thread-safe toolkits - http://weblogs.java.net/blog/kgh/archive/2004/10/multithreaded_t.html
• An article on the future of CPUs, it comments on multi-threaded applications: http://www.informit.com/articles/article.asp?p=663085&seqNum=6&rl=1
• An article showing ways of utilizing SMP on UNIX: http://www.informit.com/articles/article.asp?p=679545&rl=1
• Futexes are Tricky - http://people.redhat.com/drepper/futex.pdf

OOo

• Architecture/To-Dos
• OOo Writer Refactoring
• Architecture

Error Handling

• http://www-128.ibm.com/developerworks/aix/library/au-errnovariable/?ca=dgr-lnxw01UnixErrors

Software

• http://www.dreamsongs.com/Feyerabend/Feyerabend.html

64bits

• http://go.theregister.com/feed/http://www.regdeveloper.co.uk/2007/03/27/64_bits/

Building

• Building OOo with Cygwin on Windows

Policies

• http://www.openoffice.org/scdocs/ddIssues_EnterModify.html#priority