/*
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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_SHARED_GCTRACE_HPP
#define SHARE_GC_SHARED_GCTRACE_HPP
#include "gc/shared/copyFailedInfo.hpp"
#include "gc/shared/gcCause.hpp"
#include "gc/shared/gcId.hpp"
#include "gc/shared/gcName.hpp"
#include "gc/shared/gcWhen.hpp"
#include "memory/metaspace.hpp"
#include "memory/referenceType.hpp"
#include "utilities/macros.hpp"
#include "utilities/ticks.hpp"
class GCHeapSummary;
class MetaspaceChunkFreeListSummary;
class MetaspaceSummary;
class PSHeapSummary;
class ReferenceProcessorStats;
class TimePartitions;
class BoolObjectClosure;
class SharedGCInfo {
private :
GCName _name;
GCCause::Cause _cause;
Ticks _start_timestamp;
Ticks _end_timestamp;
Tickspan _sum_of_pauses;
Tickspan _longest_pause;
public :
SharedGCInfo(GCName name) :
_name(name),
_cause(GCCause::_last_gc_cause),
_start_timestamp(),
_end_timestamp(),
_sum_of_pauses(),
_longest_pause() {
}
void set_start_timestamp(const Ticks& timestamp) { _start_timestamp = timestamp; }
const Ticks start_timestamp() const { return _start_timestamp; }
void set_end_timestamp(const Ticks& timestamp) { _end_timestamp = timestamp; }
const Ticks end_timestamp() const { return _end_timestamp; }
void set_name(GCName name) { _name = name; }
GCName name() const { return _name; }
void set_cause(GCCause::Cause cause) { _cause = cause; }
GCCause::Cause cause() const { return _cause; }
void set_sum_of_pauses(const Tickspan& duration) { _sum_of_pauses = duration; }
const Tickspan sum_of_pauses() const { return _sum_of_pauses; }
void set_longest_pause(const Tickspan& duration) { _longest_pause = duration; }
const Tickspan longest_pause() const { return _longest_pause; }
};
class ParallelOldGCInfo {
void * _dense_prefix;
public :
ParallelOldGCInfo() : _dense_prefix(NULL) {}
void report_dense_prefix(void * addr) {
_dense_prefix = addr;
}
void * dense_prefix() const { return _dense_prefix; }
};
class GCTracer {
protected :
SharedGCInfo _shared_gc_info;
public :
bool should_report_cpu_time_event() const ;
void report_gc_start(GCCause::Cause cause, const Ticks& timestamp);
void report_gc_end(const Ticks& timestamp, TimePartitions* time_partitions);
void report_gc_heap_summary(GCWhen::Type when, const GCHeapSummary& heap_summary) const ;
void report_metaspace_summary(GCWhen::Type when, const MetaspaceSummary& metaspace_summary) const ;
void report_gc_reference_stats(const ReferenceProcessorStats& rp) const ;
void report_object_count_after_gc(BoolObjectClosure* object_filter) NOT_SERVICES_RETURN;
void report_cpu_time_event(double user_time, double system_time, double real_time) const ;
protected :
GCTracer(GCName name) : _shared_gc_info(name) {}
virtual void report_gc_start_impl(GCCause::Cause cause, const Ticks& timestamp);
virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
private :
bool should_send_cpu_time_event() const ;
void send_garbage_collection_event() const ;
void send_gc_heap_summary_event(GCWhen::Type when, const GCHeapSummary& heap_summary) const ;
void send_meta_space_summary_event(GCWhen::Type when, const MetaspaceSummary& meta_space_summary) const ;
void send_metaspace_chunk_free_list_summary(GCWhen::Type when, Metaspace::MetadataType mdtype, const MetaspaceChunkFreeListSummary& summary) const ;
void send_reference_stats_event(ReferenceType type, size_t count) const ;
void send_phase_events(TimePartitions* time_partitions) const ;
void send_cpu_time_event(double user_time, double system_time, double real_time) const ;
};
class YoungGCTracer : public GCTracer {
static const uint UNSET_TENURING_THRESHOLD = (uint) -1 ;
uint _tenuring_threshold;
protected :
YoungGCTracer(GCName name) : GCTracer(name), _tenuring_threshold(UNSET_TENURING_THRESHOLD) {}
virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
public :
void report_promotion_failed(const PromotionFailedInfo& pf_info) const ;
void report_tenuring_threshold(const uint tenuring_threshold);
/*
* Methods for reporting Promotion in new or outside PLAB Events .
*
* The object age is always required as it is not certain that the mark word
* of the oop can be trusted at this stage .
*
* obj_size is the size of the promoted object in bytes .
*
* tenured should be true if the object has been promoted to the old
* space during this GC , if the object is copied to survivor space
* from young space or survivor space ( aging ) tenured should be false .
*
* plab_size is the size of the newly allocated PLAB in bytes .
*/
bool should_report_promotion_events() const ;
bool should_report_promotion_in_new_plab_event() const ;
bool should_report_promotion_outside_plab_event() const ;
void report_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
uint age, bool tenured,
size_t plab_size) const ;
void report_promotion_outside_plab_event(Klass* klass, size_t obj_size,
uint age, bool tenured) const ;
private :
void send_young_gc_event() const ;
void send_promotion_failed_event(const PromotionFailedInfo& pf_info) const ;
bool should_send_promotion_in_new_plab_event() const ;
bool should_send_promotion_outside_plab_event() const ;
void send_promotion_in_new_plab_event(Klass* klass, size_t obj_size,
uint age, bool tenured,
size_t plab_size) const ;
void send_promotion_outside_plab_event(Klass* klass, size_t obj_size,
uint age, bool tenured) const ;
};
class OldGCTracer : public GCTracer {
protected :
OldGCTracer(GCName name) : GCTracer(name) {}
virtual void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
public :
void report_concurrent_mode_failure();
private :
void send_old_gc_event() const ;
void send_concurrent_mode_failure_event();
};
class ParallelOldTracer : public OldGCTracer {
ParallelOldGCInfo _parallel_old_gc_info;
public :
ParallelOldTracer() : OldGCTracer(ParallelOld) {}
void report_dense_prefix(void * dense_prefix);
protected :
void report_gc_end_impl(const Ticks& timestamp, TimePartitions* time_partitions);
private :
void send_parallel_old_event() const ;
};
class SerialOldTracer : public OldGCTracer, public CHeapObj<mtGC> {
public :
SerialOldTracer() : OldGCTracer(SerialOld) {}
};
class ParallelScavengeTracer : public YoungGCTracer {
public :
ParallelScavengeTracer() : YoungGCTracer(ParallelScavenge) {}
};
class DefNewTracer : public YoungGCTracer, public CHeapObj<mtGC> {
public :
DefNewTracer() : YoungGCTracer(DefNew) {}
};
class GCLockerTracer : public AllStatic {
#if INCLUDE_JFR
private :
static Ticks _needs_gc_start_timestamp;
static volatile jint _jni_lock_count;
static volatile jint _stall_count;
#endif
static bool is_started() NOT_JFR_RETURN_(false );
public :
static void start_gc_locker(jint jni_lock_count) NOT_JFR_RETURN();
static void inc_stall_count() NOT_JFR_RETURN();
static void report_gc_locker() NOT_JFR_RETURN();
};
#endif // SHARE_GC_SHARED_GCTRACE_HPP
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