All of these values are derived from the self samples count and there is no need to evaluate them in v8 when clients can do that when needed on their side.
Also added unsigned GetHitCount() which should be used instead of double GetSelfSamplesCount(). I'm going to deprecate the latter one once Blink has switched to GetHitCount.
BUG=267595
TBR=svenpanne@chromium.org
Review URL: https://codereview.chromium.org/22710006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16119 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
The start and end time are now measured in microseconds and the type is int64_t.
This way it seems more natural as we are going to support submilisecond sampling
rate soon. Also it fixes cctest/test-cpu-profiler/ProfileStartEndTime test
failure caused by comparison between long double and double.
TEST=cctest/test-cpu-profiler/ProfileStartEndTime
BUG=v8:2824
R=bmeurer@chromium.org
Review URL: https://codereview.chromium.org/22155003
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16067 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
The start and end time are now measured in microseconds and the type is int64_t. This way it seems more natural as we are going to support submilisecond sampling rate soon. Also it fixes cctest/test-cpu-profiler/ProfileStartEndTime test failure caused by comparison between long double and double.
TEST=cctest/test-cpu-profiler/ProfileStartEndTime
BUG=v8:2824
R=alph@chromium.org, bmeurer@chromium.org
Review URL: https://codereview.chromium.org/22172002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16049 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
I'm going to change CPU profiler API and deprecate GetSelfTime, GetTotalTime and GetTotalSamplesCount on CpuProfileNode as all of those values are derived from self samples count and sampling rate. The sampling rate in turn is calculate based on the profiling duration so having start/end time and total sample count is enough for calculating smpling rate.
BUG=267595
R=alph@chromium.org, bmeurer@chromium.org
Review URL: https://codereview.chromium.org/21918002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@16039 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This is preparatory work for reordering the transition tree. Since elements transitions will be at the root of the transition tree, runtime access to them is slow since we have to walk the transition tree backwards first. Hence remove the optimization that promoted them to a special field, requiring a pointer (mostly NULL) in every non-simple transition array.
R=titzer@chromium.org
Review URL: https://chromiumcodereview.appspot.com/21228002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15993 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
In order to properly sanitize exception data during a 'window.onerror'
handler, we need to know whether a script was served with proper CORS
headers at the time it was loaded into V8. This patch adds a single bool
to ScriptOrigin, and pipes that through the compiler to land on the
Script object. We can then retrieve the parameter when calling the
embedder's exception callback.
BUG=crbug.com/159566
R=mstarzinger@chromium.org
Review URL: https://codereview.chromium.org/20646006
Patch from Mike West <mkwst@chromium.org>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15963 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
The methods were added to the public API in r1185 when Chrome DevTools were using the same output as produced for tick processor when --prof option is specified.
I don't see any existing clients of these methods and since they add a noticeable complexity to the profiler code I'd like to remove them.
BUG=None
R=yangguo@chromium.org
Review URL: https://codereview.chromium.org/19591006
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15828 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
These methods have been superceeded by equivalents accepting object arguments exposing more details.
This is exactly the same change as r15708 which was reverted in r15710 due to pending Blink changes. Now that Blink is rolled to 154493 it should be safe to land this (required Blink change is 154386).
BUG=None
TBR=yangguo@chromium.org
Review URL: https://codereview.chromium.org/19541005
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15769 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
This patch enables objects to undergo a single transition when they become observed, avoiding the need to create a new map for every observed objects.
Observed objects which become unobserved does not cause another map transition and unobserved does not clear the observed bit on the map. The unobserved object.
R=verwaest@chromium.org
Review URL: https://codereview.chromium.org/18221006
Patch from Rafael Weinstein <rafaelw@chromium.org>.
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15650 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
In Blink, JSTypedArray and JSDataView objects act as "wrappers" for C++
objects. Wrapping protocol in Blink requires all wrapper JavaScript objects
to have a certain amount of internal fields that Blink uses for
book-keeping (essentially a pointer to C++ object and some type
information). This change adds those internal fields to JSTypedArray and
JSDataView, in a similiar way to how it is done for JSArrayBuffer.
R=titzer@chromium.org
Review URL: https://codereview.chromium.org/18695004
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15511 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
The only way to get v8::CpuProfiler instance in the V8 public API is to call v8::Iolate::GetCpuProfiler(). The method will return NULL if the isolate has not been initialized yet or has been torn down already. It is the client's reponsibility to make sure that CPU profiling has been stopped before disposing of the isolate.
This CL adds a test for this and several ASSRTS enforcing that assumptions. This allowed to be sure that heap is always setup when CPU profiling is being started. Based on that the number of places where already compiled functions are reported to the profiler event processor boils down to the single place (CpuProfiler::StartProcessorIfNotStarted). I'm going to rely on this assumption in further changes.
BUG=None
R=loislo@chromium.org, yangguo@chromium.org
Review URL: https://codereview.chromium.org/18336002
git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@15415 ce2b1a6d-e550-0410-aec6-3dcde31c8c00
