rootSetClosure.cpp

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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#include "precompiled.hpp"
#include "classfile/classLoaderDataGraph.hpp"
#include "classfile/stringTable.hpp"
#include "gc/shared/oopStorage.inline.hpp"
#include "gc/shared/oopStorageSet.inline.hpp"
#include "gc/shared/strongRootsScope.hpp"
#include "jfr/leakprofiler/chains/bfsClosure.hpp"
#include "jfr/leakprofiler/chains/dfsClosure.hpp"
#include "jfr/leakprofiler/chains/edgeQueue.hpp"
#include "jfr/leakprofiler/chains/rootSetClosure.hpp"
#include "jfr/leakprofiler/utilities/unifiedOopRef.inline.hpp"
#include "oops/access.inline.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/synchronizer.hpp"
#include "runtime/thread.hpp"
#include "services/management.hpp"
#include "utilities/align.hpp"

template <typename Delegate>
RootSetClosure<Delegate>::RootSetClosure(Delegate* delegate) : _delegate(delegate) {}

template <typename Delegate>
void RootSetClosure<Delegate>::do_oop(oop* ref) {
  assert(ref != NULL, "invariant");
  assert(is_aligned(ref, HeapWordSize), "invariant");
  if (*ref != NULL) {
    _delegate->do_root(UnifiedOopRef::encode_in_native(ref));
  }
}

template <typename Delegate>
void RootSetClosure<Delegate>::do_oop(narrowOop* ref) {
  assert(ref != NULL, "invariant");
  assert(is_aligned(ref, sizeof(narrowOop)), "invariant");
  if (!CompressedOops::is_null(*ref)) {
    _delegate->do_root(UnifiedOopRef::encode_in_native(ref));
  }
}

class RootSetClosureMarkScope : public MarkScope {};

template <typename Delegate>
void RootSetClosure<Delegate>::process() {
  RootSetClosureMarkScope mark_scope;
  CLDToOopClosure cldt_closure(this, ClassLoaderData::_claim_none);
  ClassLoaderDataGraph::always_strong_cld_do(&cldt_closure);
  // We don't follow code blob oops, because they have misaligned oops.
  Threads::oops_do(this, NULL);
  OopStorageSet::strong_oops_do(this);
}

template class RootSetClosure<BFSClosure>;
template class RootSetClosure<DFSClosure>;