Ignore:
Timestamp:
Aug 26, 2011, 3:23:43 PM (14 years ago)
Author:
[email protected]
Message:

The GC does not have a facility for profiling the kinds of objects
that occupy the heap
​https://bugs.webkit.org/show_bug.cgi?id=66849

Reviewed by Geoffrey Garen.

Destructor calls and object scans are now optionally counted, per
vtable. When the heap is destroyed and profiling is enabled, the
counts are dumped, with care taken to print the names of classes
(modulo C++ mangling) sorted in descending commonality.

(JSC::Heap::destroy):

  • heap/Heap.h:
  • heap/MarkStack.cpp:

(JSC::SlotVisitor::visitChildren):
(JSC::SlotVisitor::drain):

  • heap/MarkStack.h:
  • heap/MarkedBlock.cpp:

(JSC::MarkedBlock::callDestructor):

  • heap/MarkedBlock.h:
  • heap/VTableSpectrum.cpp: Added.

(JSC::VTableSpectrum::VTableSpectrum):
(JSC::VTableSpectrum::~VTableSpectrum):
(JSC::VTableSpectrum::countVPtr):
(JSC::VTableSpectrum::count):
(JSC::VTableAndCount::VTableAndCount):
(JSC::VTableAndCount::operator<):
(JSC::VTableSpectrum::dump):

  • heap/VTableSpectrum.h: Added.
  • wtf/Platform.h:
File:
1 edited

Legend:

Unmodified
Added
Removed

  • trunk/Source/JavaScriptCore/JavaScriptCore.exp

    r93698 r93918  
    175175__ZN3JSC14TimeoutChecker10didTimeOutEPNS_9ExecStateE
    176176__ZN3JSC14TimeoutChecker5resetEv
     177__ZN3JSC14VTableSpectrum5countEPNS_6JSCellE
    177178__ZN3JSC14throwTypeErrorEPNS_9ExecStateE
    178179__ZN3JSC15JSWrapperObject13visitChildrenERNS_11SlotVisitorE
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