Profiler improvements

Profiler improvements

(1) --prof-cpp: Collects ticks like --prof, but ignores code creation events to reduce distortion (so all JS ticks will be "unaccounted"). Useful for profiling C++ code.
(2) --timed-range flag for tick processor: Ignores ticks before the first and after the last call to Date.now(). Useful for focusing on the timed section of a test.

Committed: https://crrev.com/feffccca22cb63f39f8170b392e0ca05145e6403
Cr-Commit-Position: refs/heads/master@{#26168}

[Jakob Kummerow, 2014-12-15 12:06:57]

jkummerow@chromium.org changed reviewers:
+ yangguo@chromium.org

[Jakob Kummerow, 2014-12-15 12:06:58]

PTAL whenever you have time (next year is fine).

[Jakob Kummerow, 2014-12-15 12:09:15]

https://codereview.chromium.org/802333002/diff/1/src/isolate.cc
File src/isolate.cc (left):

https://codereview.chromium.org/802333002/diff/1/src/isolate.cc#oldcode2100
src/isolate.cc:2100: // If we are deserializing, log non-function code objects
and compiled
Drive-by cleanup: Deserializer::Deserialize() (called 21 lines above) does this
anyway.

[Yang, 2015-01-08 13:32:36]

On 2014/12/15 12:09:15, Jakob wrote:
> https://codereview.chromium.org/802333002/diff/1/src/isolate.cc
> File src/isolate.cc (left):
> 
> https://codereview.chromium.org/802333002/diff/1/src/isolate.cc#oldcode2100
> src/isolate.cc:2100: // If we are deserializing, log non-function code objects
> and compiled
> Drive-by cleanup: Deserializer::Deserialize() (called 21 lines above) does
this
> anyway.

LGTM.

[Yang, 2015-01-08 13:32:41]

https://codereview.chromium.org/802333002/diff/1/src/isolate.cc
File src/isolate.cc (left):

https://codereview.chromium.org/802333002/diff/1/src/isolate.cc#oldcode2100
src/isolate.cc:2100: // If we are deserializing, log non-function code objects
and compiled
On 2014/12/15 12:09:15, Jakob wrote:
> Drive-by cleanup: Deserializer::Deserialize() (called 21 lines above) does
this
> anyway.

Nice catch.

[Jakob Kummerow, 2015-01-19 15:05:14]

The CQ bit was checked by jkummerow@chromium.org

[commit-bot: I haz the power, 2015-01-19 15:06:17]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/802333002/20001

[commit-bot: I haz the power, 2015-01-19 15:28:47]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-01-19 15:28:47]

Try jobs failed on following builders:
  v8_linux64_asan_rel on tryserver.v8
(http://build.chromium.org/p/tryserver.v8/builders/v8_linux64_asan_rel/builds/742)
  v8_linux_arm64_rel on tryserver.v8
(http://build.chromium.org/p/tryserver.v8/builders/v8_linux_arm64_rel/builds/2173)

[Yang, 2015-01-20 14:21:52]

The CQ bit was checked by yangguo@chromium.org

[commit-bot: I haz the power, 2015-01-20 14:22:01]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/802333002/40001

[commit-bot: I haz the power, 2015-01-20 16:06:09]

Committed patchset #3 (id:40001)

[commit-bot: I haz the power, 2015-01-20 16:06:15]

Patchset 3 (id:??) landed as
https://crrev.com/feffccca22cb63f39f8170b392e0ca05145e6403
Cr-Commit-Position: refs/heads/master@{#26168}