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Re: Branches & directories

From
Jeff King <peff@peff.net>
Date
Oct 3, 2011, 07:34 UTC
Message-ID
<20111003073456.GA10054@sigill.intra.peff.net>
In-Reply-To
<vpqaa9ijzt4.fsf@bauges.imag.fr>
On Mon, Oct 03, 2011 at 09:32:07AM +0200, Matthieu Moy wrote:
Show 12 quoted lines
> Hilco Wijbenga <hilco.wijbenga@gmail.com> writes:
> 
> > Yes, I meant it literally. And, no, Git could not possibly know so it
> > would have to be optional behaviour. But it's probably a lot of work
> > for (for most people) little gain.
> 
> Not only little gain, but also important risk: users of this feature
> would be likely to spend hours debugging something just because some
> files weren't recompiled at the right time.
> 
> If you want to optimize the number of files compiled by "make", then
> ccache is your friend. This one is safe.

Yes. Despite my previous message showing what _could_ be done, I do think it's crazy. You should just use ccache.

Speaking of which; does anybody know of a git-aware ccache-like tool? We already have a nice index of the sha1 of each file in the repository (along with a stat cache showing us whether it's up-to-date or not). Something like ccache could avoid even looking in the C files at all if it relied on git's index.

I don't know how much speedup it would yield in practice, though.
-Peff
Previous: Matthieu MoyNext: Matthieu Moy
Message 44 of 52 in “Branches & directories”
  1. Hilco WijbengaAug 17, 2011
  2. Evan ShelhamerAug 17, 2011
  3. Junio C HamanoAug 17, 2011
  4. Hilco WijbengaAug 17, 2011
  5. Jonathan NiederAug 18, 2011
  6. Hilco WijbengaAug 21, 2011
  7. Michael WittenAug 18, 2011
  8. Michael J GruberAug 18, 2011
  9. Michael WittenAug 18, 2011
  10. Jonathan NiederAug 19, 2011
  11. Hilco WijbengaAug 21, 2011
  12. Michael WittenAug 21, 2011
  13. Hilco WijbengaAug 21, 2011
  14. Michael WittenAug 21, 2011
  15. Hilco WijbengaAug 21, 2011
  16. Michael WittenAug 22, 2011
  17. Hilco WijbengaAug 22, 2011
  18. Hilco WijbengaAug 22, 2011
  19. Michael WittenAug 22, 2011
  20. Hilco WijbengaAug 22, 2011
  21. Kyle MoffettAug 22, 2011
  22. Hilco WijbengaAug 22, 2011
  23. Kyle MoffettAug 22, 2011
  24. Hilco WijbengaAug 22, 2011
  25. Kyle MoffettAug 22, 2011
  26. Hilco WijbengaAug 22, 2011
  27. Restoring timestamps (Re: Branches & directories)Jonathan Nieder, Aug 22, 2011
  28. Hilco WijbengaAug 22, 2011
  29. Jonathan NiederAug 22, 2011
  30. Hilco WijbengaAug 23, 2011
  31. Hilco WijbengaAug 23, 2011
  32. Enrico WeigeltOct 2, 2011
  33. Hilco WijbengaOct 2, 2011
  34. Michael WittenAug 23, 2011
  35. Robin RosenbergOct 2, 2011
  36. Ronan KeryellOct 2, 2011
  37. Matthieu MoyOct 2, 2011
  38. Hilco WijbengaOct 2, 2011
  39. Hilco WijbengaOct 2, 2011
  40. Jeff KingOct 3, 2011
  41. Hilco WijbengaOct 3, 2011
  42. Jeff KingOct 3, 2011
  43. Matthieu MoyOct 3, 2011
  44. Jeff KingOct 3, 2011
  45. Matthieu MoyOct 3, 2011
  46. Jeff KingOct 3, 2011
  47. Junio C HamanoOct 3, 2011
  48. Jeff KingOct 3, 2011
  49. Hilco WijbengaOct 3, 2011
  50. Robin RosenbergOct 3, 2011
  51. Hilco WijbengaOct 3, 2011
  52. Hilco WijbengaOct 2, 2011

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