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Von: Thomas Zimmermann Betreff: [SDL] [PATCH] Make static variables const Datum: Tue, 19 May 2009 19:45:37 +0200 Hi, this is a set of simple changes which make some of SDL's internal static arrays constant. The purpose is to shrink the number of write-able static bytes and thus increase the number of memory pages shared between SDL applications. The patch set is against trunk@4513. Each of the attached patch files is specific to a sub-system. The set is completed by a second mail, because of the list's 40 KiB limit. The files readelf-r4513.txt and readelf-const-patch.txt where made by calling 'readelf -S libSDL.so'. They show the difference in ELF sections without and with the patch. Some numbers measured on my x86-64: Before [13] .rodata PROGBITS 00000000000eaaa0 000eaaa0 0000000000008170 0000000000000000 A 0 0 32 [19] .data.rel.ro PROGBITS 00000000003045e0 001045e0 00000000000023d0 0000000000000000 WA 0 0 32 [23] .data PROGBITS 00000000003076e0 001076e0 0000000000004988 0000000000000000 WA 0 0 32 After [13] .rodata PROGBITS 00000000000eaaa0 000eaaa0 0000000000009a50 0000000000000000 A 0 0 32 [19] .data.rel.ro PROGBITS 0000000000306040 00106040 0000000000002608 0000000000000000 WA 0 0 32 [23] .data PROGBITS 0000000000309360 00109360 0000000000002e88 0000000000000000 WA 0 0 32 The size of the write-able data section decreased considerably. Some entries became const-after-relocation, while most of its content went straight into the read-only data section. Best regards, Thomas
author Sam Lantinga <slouken@libsdl.org>
date Wed, 03 Jun 2009 04:37:27 +0000
parents 494559cc723b
children 1ed5d432e468
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Simple DirectMedia Layer CREDITS
Thanks to everyone who made this possible, including:

* Cliff Matthews, for giving me a reason to start this project. :)
 -- Executor rocks!  *grin*

* The Linux Fund, C Magazine, Educational Technology Resources Inc.,
  Gareth Noyce, Jesse Pavel, Keith Kitchin, Jeremy Horvath, Thomas Nicholson,
  Hans-Peter Gygax, the Eternal Lands Development Team, Lars Brubaker,
  and Phoenix Kokido for financial contributions

* Edgar "bobbens" Simo for his force feedback API development during the
  Google Summer of Code 2008

* Aaron Wishnick for his work on audio resampling and pitch shifting during
  the Google Summer of Code 2008

* Holmes Futrell for port of SDL to the iPhone and iPod Touch during the
  Google Summer of Code 2008

* Darren Alton for port of SDL to the Nintendo DS during the Google Summer
  of Code 2008

* Szymon "Wilku" Wilczek for adding support for multiple mice and tablets
  during the Google Summer of Code 2008

* Marty Leisner, Andrew, Will, Edgar Simo, Donny Viszneki, Andrea Mazzoleni,
  Dmytro Bogovych, and Couriersud for helping find SDL 1.3 bugs in the great
  SDL Bug Hunt of January 2009!

* Donny Viszneki for helping fix SDL 1.3 bugs in the great SDL Bug Hunt of
  January 2009!

* Luke Benstead for OpenGL 3.0 support

* Gaëtan de Menten for writing the PHP and SQL behind the SDL website

* Tim Jones for the new look of the SDL website

* Ryan Gordon for helping everybody out and keeping the dream alive. :)

* Mattias Engdegård, for help with the Solaris port and lots of other help

* Eric Wing, Max Horn, and Darrell Walisser for unflagging work on the Mac OS X port

* David Carré, for the Pandora port

* Patrice Mandin, for the Atari port

* Couriersud for the DirectFB driver

* Jon Atkins for SDL_image, SDL_mixer and SDL_net documentation

* Arne Claus, for the 2004 winning SDL logo,
  and Shandy Brown, Jac, Alex Lyman, Mikkel Gjoel, #Guy, Jonas Hartmann,
  Daniel Liljeberg,  Ronald Sowa, DocD, Pekka Jaervinen, Patrick Avella,
  Erkki Kontilla, Levon Gavalian, Hal Emerich, David Wiktorsson,
  S. Schury and F. Hufsky, Ciska de Ruyver, Shredweat, Tyler Montbriand,
  Martin Andersson, Merlyn Wysard, Fernando Ibanez, David Miller,
  Andre Bommele, lovesby.com, Francisco Camenforte Torres, and David Igreja
  for other logo entries.

* Bob Pendleton and David Olofson for being long time contributors to
  the SDL mailing list.

* Everybody at Loki Software, Inc. for their great contributions!

 And a big hand to everyone else who gave me appreciation, advice,
 and suggestions, especially the good folks on the SDL mailing list.

THANKS! :)

  -- Sam Lantinga			<slouken@libsdl.org>