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src/hotspot/share/gc/g1/g1MonitoringSupport.cpp
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*** 82,123 ****
G1MonitoringSupport::pad_capacity(_g1mm->old_gen_committed());
_current_size->set_value(committed);
}
};
G1MonitoringSupport::G1MonitoringSupport(G1CollectedHeap* g1h) :
_g1h(g1h),
_incremental_memory_manager("G1 Young Generation", "end of minor GC"),
! _full_gc_memory_manager("G1 Old Generation", "end of major GC"),
_eden_space_pool(NULL),
_survivor_space_pool(NULL),
! _old_gen_pool(NULL),
_incremental_collection_counters(NULL),
_full_collection_counters(NULL),
_conc_collection_counters(NULL),
- _young_gen_counters(NULL),
- _old_gen_counters(NULL),
- _old_space_counters(NULL),
- _eden_space_counters(NULL),
- _from_space_counters(NULL),
- _to_space_counters(NULL),
! _overall_committed(0),
! _overall_used(0),
_young_gen_committed(0),
! _old_gen_committed(0),
! _eden_space_committed(0),
! _eden_space_used(0),
! _survivor_space_committed(0),
! _survivor_space_used(0),
! _old_gen_used(0) {
recalculate_sizes();
- // Counters for garbage collections
- //
// name "collector.0". In a generational collector this would be the
// young generation collection.
_incremental_collection_counters =
new CollectorCounters("G1 incremental collections", 0);
// name "collector.1". In a generational collector this would be the
--- 82,140 ----
G1MonitoringSupport::pad_capacity(_g1mm->old_gen_committed());
_current_size->set_value(committed);
}
};
+ size_t G1MonitoringSupport::old_gen_committed() {
+ return _old_space_committed +
+ (use_legacy_monitoring() ? 0 : _humongous_space_committed + _archive_space_committed);
+ }
+
+ size_t G1MonitoringSupport::old_gen_used() {
+ return old_space_used() +
+ (use_legacy_monitoring() ? 0 : humongous_space_used() + archive_space_used());
+ }
+
G1MonitoringSupport::G1MonitoringSupport(G1CollectedHeap* g1h) :
_g1h(g1h),
+ _use_legacy_monitoring(G1UseLegacyMonitoring),
+
+ _full_memory_manager(G1UseLegacyMonitoring ? "G1 Old Generation" : "G1 Full", "end of major GC"),
_incremental_memory_manager("G1 Young Generation", "end of minor GC"),
! _young_memory_manager("G1 Young", "end of young GC"),
! _mixed_memory_manager("G1 Mixed", "end of mixed GC"),
! _conc_memory_manager("G1 Concurrent Cycle", "end of concurrent cycle"),
!
_eden_space_pool(NULL),
_survivor_space_pool(NULL),
! _old_space_pool(NULL),
! _archive_space_pool(NULL),
! _humongous_space_pool(NULL),
!
_incremental_collection_counters(NULL),
_full_collection_counters(NULL),
_conc_collection_counters(NULL),
! _young_gen_counters(NULL), _old_gen_counters(NULL),
!
! _old_space_counters(NULL), _eden_space_counters(NULL),
! _from_space_counters(NULL), _to_space_counters(NULL),
!
! _overall_committed(0), _overall_used(0),
_young_gen_committed(0),
! _eden_space_committed(0), _eden_space_used(0),
! _survivor_space_committed(0), _survivor_space_used(0),
! _old_space_committed(0), _old_space_used(0),
! _archive_space_committed(0), _archive_space_used(0),
! _humongous_space_committed(0), _humongous_space_used(0) {
! // Counters for garbage collections.
+ // Compute initial capacities. Somewhat random, as they depend
+ // on what's happened so far during JVM initialization.
recalculate_sizes();
// name "collector.0". In a generational collector this would be the
// young generation collection.
_incremental_collection_counters =
new CollectorCounters("G1 incremental collections", 0);
// name "collector.1". In a generational collector this would be the
*** 141,151 ****
// Counters are created from maxCapacity, capacity, initCapacity,
// and used.
_old_space_counters = new HSpaceCounters(_old_gen_counters->name_space(),
"space", 0 /* ordinal */,
pad_capacity(g1h->max_capacity()) /* max_capacity */,
! pad_capacity(_old_gen_committed) /* init_capacity */);
// Young collection set
// name "generation.0". This is logically the young generation.
// The "0, 3" are parameters for the n-th generation (=0) with 3 spaces.
// See _old_collection_counters for additional counters
--- 158,168 ----
// Counters are created from maxCapacity, capacity, initCapacity,
// and used.
_old_space_counters = new HSpaceCounters(_old_gen_counters->name_space(),
"space", 0 /* ordinal */,
pad_capacity(g1h->max_capacity()) /* max_capacity */,
! pad_capacity(old_gen_committed()) /* init_capacity */);
// Young collection set
// name "generation.0". This is logically the young generation.
// The "0, 3" are parameters for the n-th generation (=0) with 3 spaces.
// See _old_collection_counters for additional counters
*** 183,344 ****
}
G1MonitoringSupport::~G1MonitoringSupport() {
delete _eden_space_pool;
delete _survivor_space_pool;
! delete _old_gen_pool;
}
void G1MonitoringSupport::initialize_serviceability() {
_eden_space_pool = new G1EdenPool(_g1h, _eden_space_committed);
_survivor_space_pool = new G1SurvivorPool(_g1h, _survivor_space_committed);
! _old_gen_pool = new G1OldGenPool(_g1h, _old_gen_committed, _g1h->max_capacity());
! _full_gc_memory_manager.add_pool(_eden_space_pool);
! _full_gc_memory_manager.add_pool(_survivor_space_pool);
! _full_gc_memory_manager.add_pool(_old_gen_pool);
_incremental_memory_manager.add_pool(_eden_space_pool);
_incremental_memory_manager.add_pool(_survivor_space_pool);
! _incremental_memory_manager.add_pool(_old_gen_pool, false /* always_affected_by_gc */);
! }
! MemoryUsage G1MonitoringSupport::memory_usage() {
! MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
! return MemoryUsage(InitialHeapSize, _overall_used, _overall_committed, _g1h->max_capacity());
}
GrowableArray<GCMemoryManager*> G1MonitoringSupport::memory_managers() {
! GrowableArray<GCMemoryManager*> memory_managers(2);
memory_managers.append(&_incremental_memory_manager);
! memory_managers.append(&_full_gc_memory_manager);
return memory_managers;
}
GrowableArray<MemoryPool*> G1MonitoringSupport::memory_pools() {
! GrowableArray<MemoryPool*> memory_pools(3);
memory_pools.append(_eden_space_pool);
memory_pools.append(_survivor_space_pool);
! memory_pools.append(_old_gen_pool);
return memory_pools;
}
void G1MonitoringSupport::recalculate_sizes() {
assert_heap_locked_or_at_safepoint(true);
MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
- // Recalculate all the sizes from scratch.
! uint young_list_length = _g1h->young_regions_count();
! uint survivor_list_length = _g1h->survivor_regions_count();
! assert(young_list_length >= survivor_list_length, "invariant");
! uint eden_list_length = young_list_length - survivor_list_length;
// Max length includes any potential extensions to the young gen
// we'll do when the GC locker is active.
! uint young_list_max_length = _g1h->g1_policy()->young_list_max_length();
! assert(young_list_max_length >= survivor_list_length, "invariant");
! uint eden_list_max_length = young_list_max_length - survivor_list_length;
_overall_used = _g1h->used_unlocked();
! _eden_space_used = (size_t) eden_list_length * HeapRegion::GrainBytes;
! _survivor_space_used = (size_t) survivor_list_length * HeapRegion::GrainBytes;
! _old_gen_used = subtract_up_to_zero(_overall_used, _eden_space_used + _survivor_space_used);
! // First calculate the committed sizes that can be calculated independently.
_survivor_space_committed = _survivor_space_used;
! _old_gen_committed = HeapRegion::align_up_to_region_byte_size(_old_gen_used);
// Next, start with the overall committed size.
! _overall_committed = _g1h->capacity();
! size_t committed = _overall_committed;
// Remove the committed size we have calculated so far (for the
! // survivor and old space).
! assert(committed >= (_survivor_space_committed + _old_gen_committed), "sanity");
! committed -= _survivor_space_committed + _old_gen_committed;
// Next, calculate and remove the committed size for the eden.
! _eden_space_committed = (size_t) eden_list_max_length * HeapRegion::GrainBytes;
// Somewhat defensive: be robust in case there are inaccuracies in
// the calculations
_eden_space_committed = MIN2(_eden_space_committed, committed);
committed -= _eden_space_committed;
// Finally, give the rest to the old space...
! _old_gen_committed += committed;
// ..and calculate the young gen committed.
_young_gen_committed = _eden_space_committed + _survivor_space_committed;
assert(_overall_committed ==
! (_eden_space_committed + _survivor_space_committed + _old_gen_committed),
"the committed sizes should add up");
// Somewhat defensive: cap the eden used size to make sure it
// never exceeds the committed size.
_eden_space_used = MIN2(_eden_space_used, _eden_space_committed);
! // _survivor_committed and _old_committed are calculated in terms of
! // the corresponding _*_used value, so the next two conditions
! // should hold.
assert(_survivor_space_used <= _survivor_space_committed, "post-condition");
! assert(_old_gen_used <= _old_gen_committed, "post-condition");
}
void G1MonitoringSupport::update_sizes() {
recalculate_sizes();
if (UsePerfData) {
_eden_space_counters->update_capacity(pad_capacity(_eden_space_committed));
! _eden_space_counters->update_used(_eden_space_used);
// only the "to" survivor space is active, so we don't need to
// update the counters for the "from" survivor space
_to_space_counters->update_capacity(pad_capacity(_survivor_space_committed));
! _to_space_counters->update_used(_survivor_space_used);
! _old_space_counters->update_capacity(pad_capacity(_old_gen_committed));
! _old_space_counters->update_used(_old_gen_used);
_young_gen_counters->update_all();
_old_gen_counters->update_all();
MetaspaceCounters::update_performance_counters();
CompressedClassSpaceCounters::update_performance_counters();
}
}
void G1MonitoringSupport::update_eden_size() {
! // Recalculate everything - this should be fast enough and we are sure that we do not
! // miss anything.
recalculate_sizes();
if (UsePerfData) {
! _eden_space_counters->update_used(_eden_space_used);
}
}
! MemoryUsage G1MonitoringSupport::eden_space_memory_usage(size_t initial_size, size_t max_size) {
MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
! return MemoryUsage(initial_size,
! _eden_space_used,
! _eden_space_committed,
! max_size);
}
MemoryUsage G1MonitoringSupport::survivor_space_memory_usage(size_t initial_size, size_t max_size) {
MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
! return MemoryUsage(initial_size,
! _survivor_space_used,
! _survivor_space_committed,
! max_size);
}
! MemoryUsage G1MonitoringSupport::old_gen_memory_usage(size_t initial_size, size_t max_size) {
MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
! return MemoryUsage(initial_size,
! _old_gen_used,
! _old_gen_committed,
! max_size);
}
! G1MonitoringScope::G1MonitoringScope(G1MonitoringSupport* g1mm, bool full_gc, bool all_memory_pools_affected) :
_tcs(full_gc ? g1mm->_full_collection_counters : g1mm->_incremental_collection_counters),
! _tms(full_gc ? &g1mm->_full_gc_memory_manager : &g1mm->_incremental_memory_manager,
! G1CollectedHeap::heap()->gc_cause(), all_memory_pools_affected) {
}
--- 200,467 ----
}
G1MonitoringSupport::~G1MonitoringSupport() {
delete _eden_space_pool;
delete _survivor_space_pool;
! delete _old_space_pool;
! delete _archive_space_pool;
! delete _humongous_space_pool;
}
void G1MonitoringSupport::initialize_serviceability() {
_eden_space_pool = new G1EdenPool(_g1h, _eden_space_committed);
_survivor_space_pool = new G1SurvivorPool(_g1h, _survivor_space_committed);
! _old_space_pool = new G1OldPool(_g1h, _old_space_committed, _g1h->max_capacity());
! _archive_space_pool = new G1ArchivePool(_g1h, _archive_space_committed);
! _humongous_space_pool = new G1HumongousPool(_g1h, _humongous_space_committed);
! // Pools must be added to each memory manager in the order specified
! // below: TestMemoryMXBeansAndPoolsPresence.java expects them so.
+ if (use_legacy_monitoring()) {
_incremental_memory_manager.add_pool(_eden_space_pool);
_incremental_memory_manager.add_pool(_survivor_space_pool);
! // Incremental GCs can affect the humongous pool, but legacy behavior ignores it.
! // _incremental_memory_manager.add_pool(_humongous_space_pool);
! _incremental_memory_manager.add_pool(_old_space_pool, false /* always_affected_by_gc */);
! } else {
! _young_memory_manager.add_pool(_eden_space_pool);
! _young_memory_manager.add_pool(_survivor_space_pool);
! _young_memory_manager.add_pool(_humongous_space_pool);
!
! _mixed_memory_manager.add_pool(_eden_space_pool);
! _mixed_memory_manager.add_pool(_survivor_space_pool);
! _mixed_memory_manager.add_pool(_humongous_space_pool);
! _mixed_memory_manager.add_pool(_old_space_pool);
! _conc_memory_manager.add_pool(_humongous_space_pool);
! _conc_memory_manager.add_pool(_old_space_pool);
! }
!
! _full_memory_manager.add_pool(_eden_space_pool);
! _full_memory_manager.add_pool(_survivor_space_pool);
! if (!use_legacy_monitoring()) {
! _full_memory_manager.add_pool(_humongous_space_pool);
! _full_memory_manager.add_pool(_archive_space_pool);
! }
! _full_memory_manager.add_pool(_old_space_pool);
!
! // Update pool and jstat counter content
! update_sizes();
}
GrowableArray<GCMemoryManager*> G1MonitoringSupport::memory_managers() {
! GrowableArray<GCMemoryManager*> memory_managers(4);
! if (use_legacy_monitoring()) {
memory_managers.append(&_incremental_memory_manager);
! } else {
! memory_managers.append(&_young_memory_manager);
! memory_managers.append(&_mixed_memory_manager);
! memory_managers.append(&_conc_memory_manager);
! }
! memory_managers.append(&_full_memory_manager);
return memory_managers;
}
GrowableArray<MemoryPool*> G1MonitoringSupport::memory_pools() {
! GrowableArray<MemoryPool*> memory_pools(5);
memory_pools.append(_eden_space_pool);
memory_pools.append(_survivor_space_pool);
! memory_pools.append(_old_space_pool);
! if (!use_legacy_monitoring()) {
! memory_pools.append(_humongous_space_pool);
! memory_pools.append(_archive_space_pool);
! }
return memory_pools;
}
void G1MonitoringSupport::recalculate_sizes() {
assert_heap_locked_or_at_safepoint(true);
MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
! // Recalculate all sizes from scratch.
!
! uint eden_regions_count = _g1h->eden_regions_count();
! uint survivor_regions_count = _g1h->survivor_regions_count();
! uint young_regions_count = _g1h->young_regions_count();
! assert(young_regions_count == eden_regions_count + survivor_regions_count, "invariant");
! uint old_regions_count = _g1h->old_regions_count();
! uint archive_regions_count = _g1h->archive_regions_count();
! uint humongous_regions_count = _g1h->humongous_regions_count();
!
// Max length includes any potential extensions to the young gen
// we'll do when the GC locker is active.
! uint young_regions_count_max = _g1h->g1_policy()->young_list_max_length();
! assert(young_regions_count_max >= survivor_regions_count, "invariant");
! uint eden_regions_count_max = young_regions_count_max - survivor_regions_count;
_overall_used = _g1h->used_unlocked();
! _eden_space_used = (size_t)eden_regions_count * HeapRegion::GrainBytes;
! _survivor_space_used = (size_t)survivor_regions_count * HeapRegion::GrainBytes;
! _archive_space_used = (size_t)archive_regions_count * HeapRegion::GrainBytes;
! _humongous_space_used = (size_t)humongous_regions_count * HeapRegion::GrainBytes;
!
! // We separately keep track of the humongous and archive spaces, no
! // matter which mode we're in. In legacy mode, the old space is the
! // sum of the old, humongous and archive spaces, but in default mode
! // it does not include the humongous and archive spaces. The old
! // generation as a whole (in contrast to the old space), always
! // includes the humongous and archive spaces. See the definitions of
! // old_gen_committed() and old_gen_used().
! size_t excess_old = use_legacy_monitoring() ? 0 : _humongous_space_used + _archive_space_used;
! _old_space_used = subtract_up_to_zero(_overall_used, _eden_space_used + _survivor_space_used + excess_old);
! // First, calculate the committed sizes that can be calculated independently.
_survivor_space_committed = _survivor_space_used;
! _old_space_committed = HeapRegion::align_up_to_region_byte_size(_old_space_used);
! _archive_space_committed = _archive_space_used;
! _humongous_space_committed = _humongous_space_used;
// Next, start with the overall committed size.
! size_t committed = _overall_committed = _g1h->capacity();
// Remove the committed size we have calculated so far (for the
! // survivor, old, archive, and humongous spaces).
! assert(committed >= (_survivor_space_committed + _old_space_committed + excess_old), "sanity");
! committed -= _survivor_space_committed + _old_space_committed + excess_old;
// Next, calculate and remove the committed size for the eden.
! _eden_space_committed = (size_t)eden_regions_count_max * HeapRegion::GrainBytes;
// Somewhat defensive: be robust in case there are inaccuracies in
// the calculations
_eden_space_committed = MIN2(_eden_space_committed, committed);
committed -= _eden_space_committed;
// Finally, give the rest to the old space...
! _old_space_committed += committed;
// ..and calculate the young gen committed.
_young_gen_committed = _eden_space_committed + _survivor_space_committed;
assert(_overall_committed ==
! (_eden_space_committed + _survivor_space_committed + _old_space_committed + excess_old),
"the committed sizes should add up");
// Somewhat defensive: cap the eden used size to make sure it
// never exceeds the committed size.
_eden_space_used = MIN2(_eden_space_used, _eden_space_committed);
!
! // _survivor_space_committed and _old_space_committed are calculated in terms of
! // the corresponding _*_used value, so the next two conditions should hold.
assert(_survivor_space_used <= _survivor_space_committed, "post-condition");
! assert(_old_space_used <= _old_space_committed, "post-condition");
}
void G1MonitoringSupport::update_sizes() {
recalculate_sizes();
if (UsePerfData) {
_eden_space_counters->update_capacity(pad_capacity(_eden_space_committed));
! _eden_space_counters->update_used(eden_space_used());
// only the "to" survivor space is active, so we don't need to
// update the counters for the "from" survivor space
_to_space_counters->update_capacity(pad_capacity(_survivor_space_committed));
! _to_space_counters->update_used(survivor_space_used());
! _old_space_counters->update_capacity(pad_capacity(old_gen_committed()));
! _old_space_counters->update_used(old_gen_used());
_young_gen_counters->update_all();
_old_gen_counters->update_all();
MetaspaceCounters::update_performance_counters();
CompressedClassSpaceCounters::update_performance_counters();
}
}
void G1MonitoringSupport::update_eden_size() {
! // Recalculate everything. Should be fast enough and we are sure not to miss anything.
recalculate_sizes();
if (UsePerfData) {
! _eden_space_counters->update_capacity(pad_capacity(_eden_space_committed));
! _eden_space_counters->update_used(eden_space_used());
}
}
! MemoryUsage G1MonitoringSupport::memory_usage() {
MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
+ return MemoryUsage(InitialHeapSize, _overall_used, _overall_committed, _g1h->max_capacity());
+ }
! MemoryUsage G1MonitoringSupport::eden_space_memory_usage(size_t initial_size, size_t max_size) {
! MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
! return MemoryUsage(initial_size, eden_space_used(), _eden_space_committed, max_size);
}
MemoryUsage G1MonitoringSupport::survivor_space_memory_usage(size_t initial_size, size_t max_size) {
MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
+ return MemoryUsage(initial_size, survivor_space_used(), _survivor_space_committed, max_size);
+ }
! MemoryUsage G1MonitoringSupport::old_space_memory_usage(size_t initial_size, size_t max_size) {
! MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
! return MemoryUsage(initial_size, old_space_used(), _old_space_committed, max_size);
}
! MemoryUsage G1MonitoringSupport::archive_space_memory_usage(size_t initial_size, size_t max_size) {
MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
+ return MemoryUsage(initial_size, archive_space_used(), _archive_space_committed, max_size);
+ }
! MemoryUsage G1MonitoringSupport::humongous_space_memory_usage(size_t initial_size, size_t max_size) {
! MutexLockerEx x(MonitoringSupport_lock, Mutex::_no_safepoint_check_flag);
! return MemoryUsage(initial_size, humongous_space_used(), _humongous_space_committed, max_size);
! }
!
! TraceConcMemoryManagerStats::TraceConcMemoryManagerStats(Stage stage, GCCause::Cause cause)
! : TraceMemoryManagerStats() {
! GCMemoryManager* manager = G1CollectedHeap::heap()->g1mm()->conc_memory_manager();
! switch (stage) {
! case CycleStart:
! initialize(manager /* GC manager */,
! cause /* cause of the GC */,
! true /* allMemoryPoolsAffected */,
! true /* recordGCBeginTime */,
! true /* recordPreGCUsage */,
! false /* recordPeakUsage */,
! false /* recordPostGCusage */,
! false /* recordAccumulatedGCTime */,
! false /* recordGCEndTime */,
! false /* countCollection */ );
! break;
! case Remark:
! case Cleanup:
! initialize(manager /* GC manager */,
! cause /* cause of the GC */,
! true /* allMemoryPoolsAffected */,
! false /* recordGCBeginTime */,
! false /* recordPreGCUsage */,
! false /* recordPeakUsage */,
! false /* recordPostGCusage */,
! true /* recordAccumulatedGCTime */,
! false /* recordGCEndTime */,
! false /* countCollection */ );
! break;
! case CycleEnd:
! initialize(manager /* GC manager */,
! cause /* cause of the GC */,
! true /* allMemoryPoolsAffected */,
! false /* recordGCBeginTime */,
! false /* recordPreGCUsage */,
! true /* recordPeakUsage */,
! true /* recordPostGCusage */,
! false /* recordAccumulatedGCTime */,
! true /* recordGCEndTime */,
! true /* countCollection */ );
! break;
! default:
! ShouldNotReachHere();
! break;
! }
}
! G1MonitoringScope::G1MonitoringScope(G1MonitoringSupport* g1mm, bool full_gc, bool mixed_gc) :
_tcs(full_gc ? g1mm->_full_collection_counters : g1mm->_incremental_collection_counters),
! _tms(full_gc ? &g1mm->_full_memory_manager :
! (g1mm->use_legacy_monitoring() ? &g1mm->_incremental_memory_manager :
! (mixed_gc ? &g1mm->_mixed_memory_manager :
! /* young */ &g1mm->_young_memory_manager)),
! g1mm->_g1h->gc_cause(),
! full_gc || (g1mm->use_legacy_monitoring() ? mixed_gc : true) /* allMemoryPoolsAffected */) {
}
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