27 
  28 G1FullGCScope* G1FullGCScope::_instance = NULL;
  29 
  30 G1FullGCScope* G1FullGCScope::instance() {
  31   assert(_instance != NULL, "Must be setup already");
  32   return _instance;
  33 }
  34 
  35 G1FullGCScope::G1FullGCScope(bool explicit_gc, bool clear_soft) :
  36     _rm(),
  37     _explicit_gc(explicit_gc),
  38     _g1h(G1CollectedHeap::heap()),
  39     _gc_id(),
  40     _svc_marker(SvcGCMarker::FULL),
  41     _timer(),
  42     _tracer(),
  43     _active(),
  44     _cpu_time(),
  45     _soft_refs(clear_soft, _g1h->collector_policy()),
  46     _memory_stats(true, _g1h->gc_cause()),
  47     _collector_stats(_g1h->g1mm()->full_collection_counters()) {

  48   assert(_instance == NULL, "Only one scope at a time");
  49   _timer.register_gc_start();
  50   _tracer.report_gc_start(_g1h->gc_cause(), _timer.gc_start());
  51   _g1h->pre_full_gc_dump(&_timer);
  52   _g1h->trace_heap_before_gc(&_tracer);
  53   _instance = this;
  54 }
  55 
  56 G1FullGCScope::~G1FullGCScope() {
  57   // We must call G1MonitoringSupport::update_sizes() in the same scoping level
  58   // as an active TraceMemoryManagerStats object (i.e. before the destructor for the
  59   // TraceMemoryManagerStats is called) so that the G1 memory pools are updated
  60   // before any GC notifications are raised.
  61   _g1h->g1mm()->update_sizes();
  62   _g1h->trace_heap_after_gc(&_tracer);
  63   _g1h->post_full_gc_dump(&_timer);
  64   _timer.register_gc_end();
  65   _tracer.report_gc_end(_timer.gc_end(), _timer.time_partitions());
  66   _instance = NULL;
  67 }
  68 
  69 bool G1FullGCScope::is_explicit_gc() {
  70   return _explicit_gc;
  71 }
  72 
  73 bool G1FullGCScope::should_clear_soft_refs() {
  74   return _soft_refs.should_clear();
  75 }
  76 
  77 STWGCTimer* G1FullGCScope::timer() {
  78   return &_timer;
  79 }
  80 
  81 SerialOldTracer* G1FullGCScope::tracer() {
  82   return &_tracer;




  83 }

  27 
  28 G1FullGCScope* G1FullGCScope::_instance = NULL;
  29 
  30 G1FullGCScope* G1FullGCScope::instance() {
  31   assert(_instance != NULL, "Must be setup already");
  32   return _instance;
  33 }
  34 
  35 G1FullGCScope::G1FullGCScope(bool explicit_gc, bool clear_soft) :
  36     _rm(),
  37     _explicit_gc(explicit_gc),
  38     _g1h(G1CollectedHeap::heap()),
  39     _gc_id(),
  40     _svc_marker(SvcGCMarker::FULL),
  41     _timer(),
  42     _tracer(),
  43     _active(),
  44     _cpu_time(),
  45     _soft_refs(clear_soft, _g1h->collector_policy()),
  46     _memory_stats(true, _g1h->gc_cause()),
  47     _collector_stats(_g1h->g1mm()->full_collection_counters()),
  48     _heap_transition(_g1h) {
  49   assert(_instance == NULL, "Only one scope at a time");
  50   _timer.register_gc_start();
  51   _tracer.report_gc_start(_g1h->gc_cause(), _timer.gc_start());
  52   _g1h->pre_full_gc_dump(&_timer);
  53   _g1h->trace_heap_before_gc(&_tracer);
  54   _instance = this;
  55 }
  56 
  57 G1FullGCScope::~G1FullGCScope() {
  58   // We must call G1MonitoringSupport::update_sizes() in the same scoping level
  59   // as an active TraceMemoryManagerStats object (i.e. before the destructor for the
  60   // TraceMemoryManagerStats is called) so that the G1 memory pools are updated
  61   // before any GC notifications are raised.
  62   _g1h->g1mm()->update_sizes();
  63   _g1h->trace_heap_after_gc(&_tracer);
  64   _g1h->post_full_gc_dump(&_timer);
  65   _timer.register_gc_end();
  66   _tracer.report_gc_end(_timer.gc_end(), _timer.time_partitions());
  67   _instance = NULL;
  68 }
  69 
  70 bool G1FullGCScope::is_explicit_gc() {
  71   return _explicit_gc;
  72 }
  73 
  74 bool G1FullGCScope::should_clear_soft_refs() {
  75   return _soft_refs.should_clear();
  76 }
  77 
  78 STWGCTimer* G1FullGCScope::timer() {
  79   return &_timer;
  80 }
  81 
  82 SerialOldTracer* G1FullGCScope::tracer() {
  83   return &_tracer;
  84 }
  85 
  86 G1HeapTransition* G1FullGCScope::heap_transition() {
  87   return &_heap_transition;
  88 }