src/hotspot/share/gc/g1/g1HeapRegionPrinter.hpp

/*
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * under the terms of the GNU General Public License version 2 only, as
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * version 2 for more details (a copy is included in the LICENSE file that
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#ifndef SHARE_GC_G1_G1HEAPREGIONPRINTER_HPP
#define SHARE_GC_G1_G1HEAPREGIONPRINTER_HPP

#include "gc/g1/g1HeapRegion.hpp"
#include "logging/log.hpp"
#include "memory/allStatic.hpp"

class G1FreeRegionList;

class G1HeapRegionPrinter : public AllStatic {

  // Print an action event.
  static void print(const char* action, G1HeapRegion* hr) {
    log_trace(gc, region)("G1HR %4u %s(%s) [" PTR_FORMAT ", " PTR_FORMAT ", " PTR_FORMAT "]",
                          hr->hrm_index(), action, hr->get_type_str(), p2i(hr->bottom()), p2i(hr->top()), p2i(hr->end()));
  }

public:
  // In some places we iterate over a list in order to generate output
  // for the list's elements. By exposing this we can avoid this
  // iteration if the printer is not active.
  static bool is_active() { return log_is_enabled(Trace, gc, region); }

  // The methods below are convenient wrappers for the print() method.

  static void alloc(G1HeapRegion* hr)                     { print("ALLOC", hr); }

  static void retire(G1HeapRegion* hr)                    { print("RETIRE", hr); }

  static void reuse(G1HeapRegion* hr)                     { print("REUSE", hr); }

  static void cset(G1HeapRegion* hr)                      { print("CSET", hr); }

  static void evac_failure(G1HeapRegion* hr)              { print("EVAC-FAILURE", hr); }

  static void mark_reclaim(G1HeapRegion* hr)              { print("MARK-RECLAIM", hr); }

  static void eager_reclaim(G1HeapRegion* hr)             { print("EAGER-RECLAIM", hr); }

  static void evac_reclaim(G1HeapRegion* hr)              { print("EVAC-RECLAIM", hr); }

  static void post_compaction(G1HeapRegion* hr)           { print("POST-COMPACTION", hr); }

  static void commit(G1HeapRegion* hr)                    { print("COMMIT", hr); }

  static void active(G1HeapRegion* hr)                    { print("ACTIVE", hr); }

  static void inactive(G1HeapRegion* hr)                  { print("INACTIVE", hr); }

  static void uncommit(G1HeapRegion* hr)                  { print("UNCOMMIT", hr); }
};

#endif // SHARE_GC_G1_G1HEAPREGIONPRINTER_HPP