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src/hotspot/share/gc/shenandoah/shenandoahCollectorPolicy.cpp

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@@ -29,10 +29,14 @@
  #include "gc/shenandoah/shenandoahHeap.inline.hpp"
  #include "runtime/os.hpp"
  
  ShenandoahCollectorPolicy::ShenandoahCollectorPolicy() :
    _success_concurrent_gcs(0),
+   _mixed_gcs(0),
+   _abbreviated_cycles(0),
+   _success_old_gcs(0),
+   _interrupted_old_gcs(0),
    _success_degenerated_gcs(0),
    _success_full_gcs(0),
    _alloc_failure_degenerated(0),
    _alloc_failure_degenerated_upgrade_to_full(0),
    _alloc_failure_full(0),

@@ -73,17 +77,34 @@
    _alloc_failure_degenerated++;
    _degen_points[point]++;
  }
  
  void ShenandoahCollectorPolicy::record_degenerated_upgrade_to_full() {
+   ShenandoahHeap::heap()->record_upgrade_to_full();
    _alloc_failure_degenerated_upgrade_to_full++;
  }
  
  void ShenandoahCollectorPolicy::record_success_concurrent() {
    _success_concurrent_gcs++;
  }
  
+ void ShenandoahCollectorPolicy::record_mixed_cycle() {
+   _mixed_gcs++;
+ }
+ 
+ void ShenandoahCollectorPolicy::record_abbreviated_cycle() {
+   _abbreviated_cycles++;
+ }
+ 
+ void ShenandoahCollectorPolicy::record_success_old() {
+   _success_old_gcs++;
+ }
+ 
+ void ShenandoahCollectorPolicy::record_interrupted_old() {
+   _interrupted_old_gcs++;
+ }
+ 
  void ShenandoahCollectorPolicy::record_success_degenerated() {
    _success_degenerated_gcs++;
  }
  
  void ShenandoahCollectorPolicy::record_success_full() {

@@ -108,18 +129,24 @@
  
  void ShenandoahCollectorPolicy::print_gc_stats(outputStream* out) const {
    out->print_cr("Under allocation pressure, concurrent cycles may cancel, and either continue cycle");
    out->print_cr("under stop-the-world pause or result in stop-the-world Full GC. Increase heap size,");
    out->print_cr("tune GC heuristics, set more aggressive pacing delay, or lower allocation rate");
-   out->print_cr("to avoid Degenerated and Full GC cycles.");
+   out->print_cr("to avoid Degenerated and Full GC cycles. Abbreviated cycles are those which found");
+   out->print_cr("enough regions with no live objects to skip evacuation.");
    out->cr();
  
-   out->print_cr(SIZE_FORMAT_W(5) " successful concurrent GCs",         _success_concurrent_gcs);
+   out->print_cr(SIZE_FORMAT_W(5) " Successful Concurrent GCs",         _success_concurrent_gcs);
    out->print_cr("  " SIZE_FORMAT_W(5) " invoked explicitly",           _explicit_concurrent);
    out->print_cr("  " SIZE_FORMAT_W(5) " invoked implicitly",           _implicit_concurrent);
    out->cr();
  
+   out->print_cr(SIZE_FORMAT_W(5) " Completed Old GCs",                 _success_old_gcs);
+   out->print_cr("  " SIZE_FORMAT_W(5) " mixed",                        _mixed_gcs);
+   out->print_cr("  " SIZE_FORMAT_W(5) " interruptions",                _interrupted_old_gcs);
+   out->cr();
+ 
    out->print_cr(SIZE_FORMAT_W(5) " Degenerated GCs",                   _success_degenerated_gcs);
    out->print_cr("  " SIZE_FORMAT_W(5) " caused by allocation failure", _alloc_failure_degenerated);
    for (int c = 0; c < ShenandoahGC::_DEGENERATED_LIMIT; c++) {
      if (_degen_points[c] > 0) {
        const char* desc = ShenandoahGC::degen_point_to_string((ShenandoahGC::ShenandoahDegenPoint)c);

@@ -127,10 +154,13 @@
      }
    }
    out->print_cr("  " SIZE_FORMAT_W(5) " upgraded to Full GC",          _alloc_failure_degenerated_upgrade_to_full);
    out->cr();
  
+   out->print_cr(SIZE_FORMAT_W(5) " Abbreviated GCs",                   _abbreviated_cycles);
+   out->cr();
+ 
    out->print_cr(SIZE_FORMAT_W(5) " Full GCs",                          _success_full_gcs + _alloc_failure_degenerated_upgrade_to_full);
    out->print_cr("  " SIZE_FORMAT_W(5) " invoked explicitly",           _explicit_full);
    out->print_cr("  " SIZE_FORMAT_W(5) " invoked implicitly",           _implicit_full);
    out->print_cr("  " SIZE_FORMAT_W(5) " caused by allocation failure", _alloc_failure_full);
    out->print_cr("  " SIZE_FORMAT_W(5) " upgraded from Degenerated GC", _alloc_failure_degenerated_upgrade_to_full);
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