1. 02 May, 2016 1 commit
  2. 01 May, 2016 19 commits
  3. 30 Apr, 2016 7 commits
    • Brad Fitzpatrick's avatar
      net/http: expand documentation of Server.MaxHeaderBytes · 38cfaa5f
      Brad Fitzpatrick authored
      Clarify that it includes the RFC 7230 "request-line".
      
      Fixes #15494
      
      Change-Id: I9cc5dd5f2d85ebf903229539208cec4da5c38d04
      Reviewed-on: https://go-review.googlesource.com/22656Reviewed-by: 's avatarAndrew Gerrand <adg@golang.org>
      38cfaa5f
    • Kevin Burke's avatar
      database/sql: clone data for named []byte types · 4e0cd1ee
      Kevin Burke authored
      Previously named byte types like json.RawMessage could get dirty
      database memory from a call to Scan. These types would activate a
      code path that didn't clone the byte data coming from the database
      before assigning it. Another thread could then overwrite the byte
      array in src, which has unexpected consequences.
      
      Originally reported by Jason Moiron; the patch and test are his
      suggestions. Fixes #13905.
      
      Change-Id: Iacfef61cbc9dd51c8fccef9b2b9d9544c77dd0e0
      Reviewed-on: https://go-review.googlesource.com/22393Reviewed-by: 's avatarBrad Fitzpatrick <bradfitz@golang.org>
      4e0cd1ee
    • Austin Clements's avatar
      runtime: reclaim scan/dead bit in first word · a20fd1f6
      Austin Clements authored
      With the switch to separate mark bitmaps, the scan/dead bit for the
      first word of each object is now unused. Reclaim this bit and use it
      as a scan/dead bit, just like words three and on. The second word is
      still used for checkmark.
      
      This dramatically simplifies heapBitsSetTypeNoScan and hasPointers,
      since they no longer need different cases for 1, 2, and 3+ word
      objects. They can instead just manipulate the heap bitmap for the
      first word and be done with it.
      
      In order to enable this, we change heapBitsSetType and runGCProg to
      always set the scan/dead bit to scan for the first word on every code
      path. Since these functions only apply to types that have pointers,
      there's no need to do this conditionally: it's *always* necessary to
      set the scan bit in the first word.
      
      We also change every place that scans an object and checks if there
      are more pointers. Rather than only checking morePointers if the word
      is >= 2, we now check morePointers if word != 1 (since that's the
      checkmark word).
      
      Looking forward, we should probably reclaim the checkmark bit, too,
      but that's going to be quite a bit more work.
      
      Tested by setting doubleCheck in heapBitsSetType and running all.bash
      on both linux/amd64 and linux/386, and by running GOGC=10 all.bash.
      
      This particularly improves the FmtFprintf* go1 benchmarks, since they
      do a large amount of noscan allocation.
      
      name                      old time/op    new time/op    delta
      BinaryTree17-12              2.34s ± 1%     2.38s ± 1%  +1.70%  (p=0.000 n=17+19)
      Fannkuch11-12                2.09s ± 0%     2.09s ± 1%    ~     (p=0.276 n=17+16)
      FmtFprintfEmpty-12          44.9ns ± 2%    44.8ns ± 2%    ~     (p=0.340 n=19+18)
      FmtFprintfString-12          127ns ± 0%     125ns ± 0%  -1.57%  (p=0.000 n=16+15)
      FmtFprintfInt-12             128ns ± 0%     122ns ± 1%  -4.45%  (p=0.000 n=15+20)
      FmtFprintfIntInt-12          207ns ± 1%     193ns ± 0%  -6.55%  (p=0.000 n=19+14)
      FmtFprintfPrefixedInt-12     197ns ± 1%     191ns ± 0%  -2.93%  (p=0.000 n=17+18)
      FmtFprintfFloat-12           263ns ± 0%     248ns ± 1%  -5.88%  (p=0.000 n=15+19)
      FmtManyArgs-12               794ns ± 0%     779ns ± 1%  -1.90%  (p=0.000 n=18+18)
      GobDecode-12                7.14ms ± 2%    7.11ms ± 1%    ~     (p=0.072 n=20+20)
      GobEncode-12                5.85ms ± 1%    5.82ms ± 1%  -0.49%  (p=0.000 n=20+20)
      Gzip-12                      218ms ± 1%     215ms ± 1%  -1.22%  (p=0.000 n=19+19)
      Gunzip-12                   36.8ms ± 0%    36.7ms ± 0%  -0.18%  (p=0.006 n=18+20)
      HTTPClientServer-12         77.1µs ± 4%    77.1µs ± 3%    ~     (p=0.945 n=19+20)
      JSONEncode-12               15.6ms ± 1%    15.9ms ± 1%  +1.68%  (p=0.000 n=18+20)
      JSONDecode-12               55.2ms ± 1%    53.6ms ± 1%  -2.93%  (p=0.000 n=17+19)
      Mandelbrot200-12            4.05ms ± 1%    4.05ms ± 0%    ~     (p=0.306 n=17+17)
      GoParse-12                  3.14ms ± 1%    3.10ms ± 1%  -1.31%  (p=0.000 n=19+18)
      RegexpMatchEasy0_32-12      69.3ns ± 1%    70.0ns ± 0%  +0.89%  (p=0.000 n=19+17)
      RegexpMatchEasy0_1K-12       237ns ± 1%     236ns ± 0%  -0.62%  (p=0.000 n=19+16)
      RegexpMatchEasy1_32-12      69.5ns ± 1%    70.3ns ± 1%  +1.14%  (p=0.000 n=18+17)
      RegexpMatchEasy1_1K-12       377ns ± 1%     366ns ± 1%  -3.03%  (p=0.000 n=15+19)
      RegexpMatchMedium_32-12      107ns ± 1%     107ns ± 2%    ~     (p=0.318 n=20+19)
      RegexpMatchMedium_1K-12     33.8µs ± 3%    33.5µs ± 1%  -1.04%  (p=0.001 n=20+19)
      RegexpMatchHard_32-12       1.68µs ± 1%    1.73µs ± 0%  +2.50%  (p=0.000 n=20+18)
      RegexpMatchHard_1K-12       50.8µs ± 1%    52.0µs ± 1%  +2.50%  (p=0.000 n=19+18)
      Revcomp-12                   381ms ± 1%     385ms ± 1%  +1.00%  (p=0.000 n=17+18)
      Template-12                 64.9ms ± 3%    62.6ms ± 1%  -3.55%  (p=0.000 n=19+18)
      TimeParse-12                 324ns ± 0%     328ns ± 1%  +1.25%  (p=0.000 n=18+18)
      TimeFormat-12                345ns ± 0%     334ns ± 0%  -3.31%  (p=0.000 n=15+17)
      [Geo mean]                  52.1µs         51.5µs       -1.00%
      
      Change-Id: I13e74da3193a7f80794c654f944d1f0d60817049
      Reviewed-on: https://go-review.googlesource.com/22632Reviewed-by: 's avatarRick Hudson <rlh@golang.org>
      Run-TryBot: Austin Clements <austin@google.com>
      TryBot-Result: Gobot Gobot <gobot@golang.org>
      a20fd1f6
    • Austin Clements's avatar
      runtime: use morePointers and isPointer in more places · d5e3d08b
      Austin Clements authored
      This makes this code better self-documenting and makes it easier to
      find these places in the future.
      
      Change-Id: I31dc5598ae67f937fb9ef26df92fd41d01e983c3
      Reviewed-on: https://go-review.googlesource.com/22631Reviewed-by: 's avatarRick Hudson <rlh@golang.org>
      Run-TryBot: Austin Clements <austin@google.com>
      TryBot-Result: Gobot Gobot <gobot@golang.org>
      d5e3d08b
    • Austin Clements's avatar
      runtime: avoid conditional execution in morePointers and isPointer · a5d3f7ec
      Austin Clements authored
      heapBits.bits is carefully written to produce good machine code. Use
      it in heapBits.morePointers and heapBits.isPointer to get good machine
      code there, too.
      
      Change-Id: I208c7d0d38697e7a22cad67f692162589b75f1e2
      Reviewed-on: https://go-review.googlesource.com/22630Reviewed-by: 's avatarRick Hudson <rlh@golang.org>
      Run-TryBot: Austin Clements <austin@google.com>
      TryBot-Result: Gobot Gobot <gobot@golang.org>
      a5d3f7ec
    • Keith Randall's avatar
      cmd/compile: ecx is reserved for PIC, don't let peep work on it · 7a60a962
      Keith Randall authored
      Fixes #15496
      
      Change-Id: Ieb5be1caa4b1c23e23b20d56c1a0a619032a9f5d
      Reviewed-on: https://go-review.googlesource.com/22652Reviewed-by: 's avatarJosh Bleecher Snyder <josharian@gmail.com>
      7a60a962
    • Michael Munday's avatar
      runtime: fix cgocallback_gofunc on ppc64x · 58f52cbb
      Michael Munday authored
      Fix issues introduced in 5f9a870b.
      
      Change-Id: Ia75945ef563956613bf88bbe57800a96455c265d
      Reviewed-on: https://go-review.googlesource.com/22661Reviewed-by: 's avatarIan Lance Taylor <iant@golang.org>
      58f52cbb
  4. 29 Apr, 2016 13 commits