src/hotspot/share/gc/z/zStoreBarrierBuffer.inline.hpp

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#ifndef SHARE_GC_Z_ZSTOREBARRIERBUFFER_INLINE_HPP
#define SHARE_GC_Z_ZSTOREBARRIERBUFFER_INLINE_HPP

#include "gc/z/zStoreBarrierBuffer.hpp"

#include "gc/shared/gc_globals.hpp"
#include "gc/z/zThreadLocalData.hpp"
#include "runtime/thread.hpp"

inline size_t ZStoreBarrierBuffer::current() const {
  return _current / sizeof(ZStoreBarrierEntry);
}

inline void ZStoreBarrierBuffer::add(volatile zpointer* p, zpointer prev) {
  assert(ZBufferStoreBarriers, "Only buffer stores when it is enabled");
  if (_current == 0) {
    flush();
  }
  _current -= sizeof(ZStoreBarrierEntry);
  _buffer[current()] = {p, prev};
}

inline ZStoreBarrierBuffer* ZStoreBarrierBuffer::buffer_for_store(bool heal) {
  if (heal) {
    return nullptr;
  }

  Thread* const thread = Thread::current();
  if (!thread->is_Java_thread()) {
    return nullptr;
  }

  ZStoreBarrierBuffer* const buffer = ZThreadLocalData::store_barrier_buffer(JavaThread::cast(thread));
  return ZBufferStoreBarriers ? buffer : nullptr;
}

#endif // SHARE_GC_Z_ZSTOREBARRIERBUFFER_INLINE_HPP