hotspot/src/share/vm/gc/parallel/vmPSOperations.hpp
author tschatzl
Thu, 28 Jan 2016 13:30:12 +0100
changeset 35877 a2a62511d0f8
parent 30764 fec48bf5a827
permissions -rw-r--r--
8146987: Improve Parallel GC Full GC by caching results of live_words_in_range() Summary: A large part of time in the parallel scavenge collector is spent finding out the amount of live words within memory ranges to find out where to move an object to. Try to incrementally calculate this value. Reviewed-by: tschatzl, mgerdin, jmasa Contributed-by: ray alex <sky1young@gmail.com>

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#ifndef SHARE_VM_GC_PARALLEL_VMPSOPERATIONS_HPP
#define SHARE_VM_GC_PARALLEL_VMPSOPERATIONS_HPP

#include "gc/parallel/parallelScavengeHeap.hpp"
#include "gc/shared/gcCause.hpp"
#include "gc/shared/vmGCOperations.hpp"

class VM_ParallelGCFailedAllocation : public VM_CollectForAllocation {
 public:
  VM_ParallelGCFailedAllocation(size_t word_size, uint gc_count);

  virtual VMOp_Type type() const {
    return VMOp_ParallelGCFailedAllocation;
  }
  virtual void doit();
};

class VM_ParallelGCSystemGC: public VM_GC_Operation {
 public:
  VM_ParallelGCSystemGC(uint gc_count, uint full_gc_count, GCCause::Cause gc_cause);
  virtual VMOp_Type type() const { return VMOp_ParallelGCSystemGC; }
  virtual void doit();
};

#endif // SHARE_VM_GC_PARALLEL_VMPSOPERATIONS_HPP