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  1. 27 Apr, 2013 1 commit
    • Dave Cheney's avatar
      runtime: tune appendCrossover for arm · d09f34cc
      Dave Cheney authored 
      Turns out the optimal value is 8 on cortex-A9 systems (pandaboard)

benchmark                     old ns/op    new ns/op    delta
BenchmarkAppend                     907          908   +0.11%
BenchmarkAppend1Byte                101          101   +0.00%
BenchmarkAppend4Bytes               116          116   +0.00%
BenchmarkAppend8Bytes               139          138   -0.72%
BenchmarkAppend16Bytes              185          158  -14.59%
BenchmarkAppend32Bytes              131          131   +0.00%
BenchmarkAppendStr1Byte              72           72   +0.00%
BenchmarkAppendStr4Bytes             93           93   -0.21%
BenchmarkAppendStr8Bytes            116          116   +0.00%
BenchmarkAppendStr16Bytes           161          125  -22.36%
BenchmarkAppendStr32Bytes           102          102   +0.00%
BenchmarkAppendSpecialCase          613          613   +0.00%

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/8863045
      d09f34cc
  3. 26 Apr, 2013 2 commits
  5. 25 Apr, 2013 5 commits
    • Brad Fitzpatrick's avatar
      database/sql: fix driver Conn refcounting with prepared statements · 277047f5
      Brad Fitzpatrick authored 
      The refcounting of driver Conns was completedly busted and
would leak (be held open forever) with any reasonable
load. This was a significant regression from Go 1.0.

The core of this patch is removing one line:

     s.db.addDep(dc, s)

A database conn (dc) is a resource that be re-created any time
(but cached for speed) should not be held open forever with a
dependency refcount just because the Stmt (s) is alive (which
typically last for long periods of time, like forever).

The meat of the patch is new tests. In fixing the real issue,
a lot of tests then failed due to the fakedb_test.go's paranoia
about closing a fakeConn while it has open fakeStmts on it. I
could've ignored that, but that's been a problem in the past for
other bugs.

Instead, I now track per-Conn open statements and close them
when the the conn closes.  The proper way to do this would've
been making *driverStmt a finalCloser and using the dep mechanism,
but it was much more invasive. Added a TODO instead.

I'd like to give a way for drivers to opt-out of caring about
driver.Stmt closes before a driver.Conn close, but that's a TODO
for the future, and that TODO is added in this CL.

I know this is very late for Go 1.1, but database/sql is
currently nearly useless without this.

I'd like to believe all these database/sql bugs in the past
release cycle are the result of increased usage, number of
drivers, and good feedback from increasingly-capable Go
developers, and not the result of me sucking.  It's also hard
with all the real drivers being out-of-tree, so I'm having to
add more and more hooks to fakedb_test.go to simulate things
which real drivers end up doing.

Fixes #5323

R=golang-dev, snaury, gwenn.kahz, google, r
CC=golang-dev
https://golang.org/cl/8836045
      277047f5
    • Jan Ziak's avatar
      cmd/gc: initialize t->width in dgcsym() if required · 13cbf41a
      Jan Ziak authored 
      Update #5291.

R=golang-dev, daniel.morsing, iant, r
CC=golang-dev
https://golang.org/cl/8663052
      13cbf41a
    • Jan Ziak's avatar
      undo CL 8954044 / ad3c2ffb16d7 · db1c218d
      Jan Ziak authored 
      It works on i386, but fails on amd64 and arm.

««« original CL description
runtime: prevent the GC from seeing the content of a frame in runfinq()

Fixes #5348.

R=golang-dev, dvyukov
CC=golang-dev
https://golang.org/cl/8954044
»»»

R=golang-dev, r
CC=golang-dev
https://golang.org/cl/8695051
      db1c218d
    • Jan Ziak's avatar
      runtime: prevent the GC from seeing the content of a frame in runfinq() · e9bbe3a8
      Jan Ziak authored 
      Fixes #5348.

R=golang-dev, dvyukov
CC=golang-dev
https://golang.org/cl/8954044
      e9bbe3a8
    • Mikio Hara's avatar
      net: deflake raw IP protocol entry test on Windows · 2bd17bca
      Mikio Hara authored 
      Update #5344

R=golang-dev, dave, r, alex.brainman
CC=golang-dev
https://golang.org/cl/8934043
      2bd17bca
  7. 24 Apr, 2013 2 commits
  9. 23 Apr, 2013 8 commits
  11. 22 Apr, 2013 6 commits
  13. 21 Apr, 2013 4 commits
  15. 20 Apr, 2013 2 commits
  17. 19 Apr, 2013 5 commits
  19. 18 Apr, 2013 5 commits