Add an API for additional profile log records

Add an API for additional profile log records

Add the API V8::AddProfilerMark which will add a "mark" record
into the profile log (if any). Currently the mark record is only
added when using the log-based profiler.

This allows the embedder to add marks to the profile to indicate
specific points in the execution when profiling.

Update the profile processer to display the marks and the number
of ticks which happened before each mark. Also added calculation
of the bytes of generated machine code which is displayed with
the marks and as a general statistics.

Also updated to profile processer to display the number of ticks
for each VM state and not just GC.

R=jkummerow@chromium.org

[yurys, 2013-09-27 09:31:37]

lgtm

https://codereview.chromium.org/24566004/diff/1/include/v8.h
File include/v8.h (right):

https://codereview.chromium.org/24566004/diff/1/include/v8.h#newcode4605
include/v8.h:4605: */
v8::CpuProfiler may be a better place for this method.

[Yang, 2013-09-30 11:25:02]

I agree with Yury, CpuProfiler in v8-profiler.h is a better place for this.

https://codereview.chromium.org/24566004/diff/1/test/mjsunit/tools/tickproces...
File test/mjsunit/tools/tickprocessor-test.ignore-unknown (right):

https://codereview.chromium.org/24566004/diff/1/test/mjsunit/tools/tickproces...
test/mjsunit/tools/tickprocessor-test.ignore-unknown:21: JavaScript             
13      118.2%
118%... sounds like a bug somewhere...

https://codereview.chromium.org/24566004/diff/1/tools/tickprocessor.js
File tools/tickprocessor.js (right):

https://codereview.chromium.org/24566004/diff/1/tools/tickprocessor.js#newcod...
tools/tickprocessor.js:546: ' ' + padLeft('Ticks', 6) +
Please align those lines like the print below.

[Jakob Kummerow, 2015-11-28 15:33:03]

Description was changed from

==========
Add an API for additional profile log records

Add the API V8::AddProfilerMark which will add a "mark" record
into the profile log (if any). Currently the mark record is only
added when using the log-based profiler.

This allows the embedder to add marks to the profile to indicate
specific points in the execution when profiling.

Update the profile processer to display the marks and the number
of ticks which happened before each mark. Also added calculation
of the bytes of generated machine code which is displayed with
the marks and as a general statistics.

Also updated to profile processer to display the number of ticks
for each VM state and not just GC.

R=jkummerow@chromium.org
==========

to

==========
Add an API for additional profile log records

Add the API V8::AddProfilerMark which will add a "mark" record
into the profile log (if any). Currently the mark record is only
added when using the log-based profiler.

This allows the embedder to add marks to the profile to indicate
specific points in the execution when profiling.

Update the profile processer to display the marks and the number
of ticks which happened before each mark. Also added calculation
of the bytes of generated machine code which is displayed with
the marks and as a general statistics.

Also updated to profile processer to display the number of ticks
for each VM state and not just GC.

R=jkummerow@chromium.org
==========