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  1. 27 Jun, 2016 1 commit
    • David Crawshaw's avatar
      encoding/json: copy-on-write cacheTypeFields · 5f209aba
      David Crawshaw authored 
      Swtich from a sync.RWMutex to atomic.Value for cacheTypeFields.

On GOARCH=386, this recovers most of the remaining performance
difference from the 1.6 release. Compared with tip on linux/386:

	name            old time/op    new time/op    delta
	CodeDecoder-40    92.8ms ± 1%    87.7ms ± 1%  -5.50%  (p=0.000 n=10+10)

	name            old speed      new speed      delta
	CodeDecoder-40  20.9MB/s ± 1%  22.1MB/s ± 1%  +5.83%  (p=0.000 n=10+10)

With more time and care, I believe more of the JSON decoder's work
could be shifted so it is done before decoding, and independent of
the number of bytes processed. Maybe someone could explore that for
Go 1.8.

For #16117.

Change-Id: I049655b2e5b76384a0d5f4b90e3ec7cc8d8c4340
Reviewed-on: https://go-review.googlesource.com/24472
Run-TryBot: Dmitry Vyukov <dvyukov@google.com>
Reviewed-by: default avatarDmitry Vyukov <dvyukov@google.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      5f209aba
  3. 26 Jun, 2016 1 commit
  5. 25 Jun, 2016 1 commit
    • Ian Lance Taylor's avatar
      cmd/pprof: don't use local symbolization for remote source · 4fcb4eb2
      Ian Lance Taylor authored 
      If we are using a remote source (a URL), and the user did not specify
the executable file to use, then don't try to use a local source.
This was misbehaving because the local symbolizer will not fail
if there is any memory map available, but the presence of a memory map
does not ensure that the files and symbols are actually available.

We still need a pprof testsuite.

Fixes #16159.

Change-Id: I0250082a4d5181c7babc7eeec6bc95b2f3bcaec9
Reviewed-on: https://go-review.googlesource.com/24464
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Reviewed-by: default avatarJoe Tsai <thebrokentoaster@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      4fcb4eb2
  7. 24 Jun, 2016 7 commits
  9. 23 Jun, 2016 6 commits
  11. 22 Jun, 2016 5 commits
  13. 21 Jun, 2016 6 commits
  15. 20 Jun, 2016 6 commits
  17. 19 Jun, 2016 1 commit
    • Alex Brainman's avatar
      debug/pe: handle files with no string table · 691c5c15
      Alex Brainman authored 
      pecoff.doc (https://goo.gl/ayvckk) in section 5.6 says:

Immediately following the COFF symbol table is the COFF string table.
The position of this table is found by taking the symbol table address
in the COFF header, and adding the number of symbols multiplied by
the size of a symbol.

So it is unclear what to do when symbol table address is 0.
Lets assume executable does not have any string table.

Added new test with executable with no symbol table. The

gcc -s testdata\hello.c -o testdata\gcc-386-mingw-no-symbols-exec.

command was used to generate the executable.

Fixes #16084

Change-Id: Ie74137ac64b15daadd28e1f0315f3b62d1bf2059
Reviewed-on: https://go-review.googlesource.com/24200Reviewed-by: default avatarIan Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
      691c5c15
  19. 17 Jun, 2016 2 commits
  21. 16 Jun, 2016 4 commits
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