Reviewers: danno,
Message:
Hi Danno,
I would appreciate it if you could review my change.
Thanks!
Description:
Extend tick-processor utility to generate an execution timeline based on the
reported VM states
BUG=none
TEST=none
Please review this at https://codereview.chromium.org/11359048/
SVN Base: http://v8.googlecode.com/svn/branches/bleeding_edge/
Affected files:
M tools/tickprocessor.js
Index: tools/tickprocessor.js
===================================================================
--- tools/tickprocessor.js (revision 12764)
+++ tools/tickprocessor.js (working copy)
@@ -185,6 +185,7 @@
'begin-code-region': null,
'end-code-region': null });
+ this.timeline_ = "";
this.cppEntriesProvider_ = cppEntriesProvider;
this.callGraphSize_ = callGraphSize;
this.ignoreUnknown_ = ignoreUnknown;
@@ -347,6 +348,16 @@
return this.stateFilter_ == null || this.stateFilter_ == vmState;
};
+TickProcessor.prototype.recordTickTimeline = function(vmState) {
+ if (vmState == TickProcessor.VmStates.JS) this.timeline_ += "J";
+ else if (vmState == TickProcessor.VmStates.GC) this.timeline_ += "G";
+ else if (vmState == TickProcessor.VmStates.COMPILER) this.timeline_
+= "C";
+ else if (vmState == TickProcessor.VmStates.PARALLEL_COMPILER_PROLOGUE)
this.timeline_ += "|";
+ else if (vmState == TickProcessor.VmStates.OTHER) this.timeline_ += "O";
+ else if (vmState == TickProcessor.VmStates.EXTERNAL) this.timeline_
+= ".";
+ else this.timeline_ += "U";
+}
+
TickProcessor.prototype.processTick = function(pc,
sp,
is_external_callback,
@@ -354,6 +365,7 @@
vmState,
stack) {
this.ticks_.total++;
+ this.recordTickTimeline(vmState);
if (vmState == TickProcessor.VmStates.GC) this.ticks_.gc++;
if (!this.includeTick(vmState)) {
this.ticks_.excluded++;
@@ -465,6 +477,14 @@
return rec2.totalTime - rec1.totalTime ||
(rec2.internalFuncName < rec1.internalFuncName ? -1 : 1); });
this.printHeavyProfile(heavyView.head.children);
+
+ print('Visual Execution Timeline: ');
+ var sliceLength = 80;
+ var sliceStart = 0;
+ while (sliceStart < this.timeline_.length) {
+ print(this.timeline_.slice(sliceStart, sliceStart + sliceLength));
+ sliceStart += sliceLength;
+ }
};
--
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