src/hotspot/share/gc/shared/preservedMarks.inline.hpp

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#ifndef SHARE_GC_SHARED_PRESERVEDMARKS_INLINE_HPP
#define SHARE_GC_SHARED_PRESERVEDMARKS_INLINE_HPP

#include "gc/shared/preservedMarks.hpp"

#include "logging/log.hpp"
#include "oops/oop.inline.hpp"
#include "utilities/stack.inline.hpp"

inline bool PreservedMarks::should_preserve_mark(oop obj, markWord m) const {
  return obj->mark_must_be_preserved(m);
}

inline void PreservedMarks::push_if_necessary(oop obj, markWord m) {
  if (should_preserve_mark(obj, m)) {
    OopAndMarkWord elem(obj, m);
    _stack.push(elem);
  }
}

inline void PreservedMarks::push_always(oop obj, markWord m) {
  assert(!m.is_marked(), "precondition");
  OopAndMarkWord elem(obj, m);
  _stack.push(elem);
}

inline PreservedMarks::PreservedMarks()
    : _stack(OopAndMarkWordStack::default_segment_size(),
             // This stack should be used very infrequently so there's
             // no point in caching stack segments (there will be a
             // waste of space most of the time). So we set the max
             // cache size to 0.
             0 /* max_cache_size */) { }

void PreservedMarks::OopAndMarkWord::set_mark() const {
  _o->set_mark(_m);
}

#endif // SHARE_GC_SHARED_PRESERVEDMARKS_INLINE_HPP