Based on prototype at
https://github.com/rossberg-chromium/js-promise
which informed the latest spec draft version at
https://github.com/domenic/promises-unwrapping/blob/master/README.md
Activated by --harmony-promises.
Feature complete with respect to the draft spec, plus the addition of .when and .deferred methods. Final naming and other possible deviations from the current draft will hopefully be resolved soon after the next TC39 meeting.
This CL also generalises the Object.observe delivery loop into a simplistic microtask loop. Currently, all observer events are delivered before invoking any promise handler in a single fixpoint iteration. It's not clear yet what the final semantics is supposed to be (should there be a global event ordering?), but it will probably require a more thorough event loop abstraction inside V8 once we get there.
R=dslomov@chromium.org, yhirano@chromium.org
BUG=
Review URL: https://codereview.chromium.org/64223010
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18113 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Transformed variant flags into named variants. Now, all combinations of variants can be specified on the command line. The old command-line flags are kept for backwards compatibility on the bots.
Added two new test groups: slow and pass|fail. Both are implemented similar to the flaky test feature and allow to either skip or run tests marked as slow or as pass|fail.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/85733003
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@18062 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This is initial implementation of allocation profiler.
Whenever new object allocation is reported to the HeapProfiler and allocation tracking is on we will capture current stack trace, add it to the collection of the allocation traces (a tree) and attribute the allocated size to the top JS function on the stack.
Format of serialized heap snapshot is extended to include information about recorded allocation stack traces.
This patch is r17301 plus a fix for the test crash in debug mode. The test crashed because we were traversing stack trace when just allocated object wasn't completely configured, in particular the map pointer was incorrect. Invalid Map pointer broke heap iteration required to find Code object for a given pc during stack traversal. The solution is to insert free space filler in the newly allocated block just before collecting stack trace.
BUG=chromium:277984,v8:2949
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/61893031
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17742 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This is initial implementation of allocation profiler.
Whenever new object allocation is reported to the HeapProfiler and allocation tracking is on we will capture current stack trace, add it to the collection of the allocation traces (a tree) and attribute the allocated size to the top JS function on the stack.
Format of serialized heap snapshot is extended to include information about recorded allocation stack traces.
This patch is r17301 plus a fix for the test crash in debug mode. The test crashed because we were traversing stack trace when just allocated object wasn't completely configured, in particular the map pointer was incorrect. Invalid Map pointer broke heap iteration required to find Code object for a given pc during stack traversal. The solution is to insert free space filler in the newly allocated block just before collecting stack trace.
BUG=chromium:277984,v8:2949
R=hpayer@chromium.org, loislo@chromium.org
Review URL: https://codereview.chromium.org/34733004
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17365 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
Popping an element from an array should call [[Delete]] internal method
and pass true as the second argument (ECMA-262/5.1/#sec-15.4.4.6).
When the last element can't be deleted, throw a Type Error.
Not throwing the error would result in endless loop in the following test.
TEST=var a=[];Object.defineProperty(a,0,{});while(a.length)a.pop();
By the way fix another bug, or else i can't post any issues.
"presubmit.py" throw a "missing a correct copyright header" on windows.
Both the slash and the backslash are valid path separator on windows.
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/29513004
Patch from Yanagi <admin@web-tinker.com>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17346 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This is initial implementation of allocation profiler.
Whenever new object allocation is reported to the HeapProfiler and allocation tracking is on we will capture current stack trace, add it to the collection of the allocation traces (a tree) and attribute the allocated size to the top JS function on the stack.
Format of serialized heap snapshot is extended to include information about recorded allocation stack traces.
BUG=chromium:277984
R=hpayer@chromium.org, loislo@chromium.org
Review URL: https://codereview.chromium.org/27227005
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17301 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
In the process:
- Add a command-line flag --opt-code-positions to track source position information throughout optimized code.
- Add a subclass of the hydrogen graph builder to ensure that the source position is properly set on the graph builder for all generated hydrogen code.
- Overhaul handling of source positions in hydrogen to ensure they are passed through to generated code consistently and in most cases transparently.
Originally reviewed in this CL: https://codereview.chromium.org/24957003/
Review URL: https://codereview.chromium.org/29123008
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@17295 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
