void GCMemoryManager::gc_end() {
_accumulated_timer.stop();
_last_gc_stat->set_end_time(Management::timestamp());
int i;
// keep the last gc statistics for all memory pools
for (i = 0; i < MemoryService::num_memory_pools(); i++) {
MemoryPool* pool = MemoryService::get_memory_pool(i);
MemoryUsage usage = pool->get_memory_usage();
HS_DTRACE_PROBE8(hotspot, mem__pool__gc__end,
name(), strlen(name()),
pool->name(), strlen(pool->name()),
usage.init_size(), usage.used(),
usage.committed(), usage.max_size());
_last_gc_stat->set_after_gc_usage(i, usage);
}
// Set last collection usage of the memory pools managed by this collector
for (i = 0; i < num_memory_pools(); i++) {
MemoryPool* pool = get_memory_pool(i);
MemoryUsage usage = pool->get_memory_usage();
// Compare with GC usage threshold
pool->set_last_collection_usage(usage);
LowMemoryDetector::detect_after_gc_memory(pool);
}
}
void GCMemoryManager::gc_begin(bool recordGCBeginTime, bool recordPreGCUsage,
bool recordAccumulatedGCTime) {
assert(_last_gc_stat != NULL && _current_gc_stat != NULL, "Just checking");
if (recordAccumulatedGCTime) {
_accumulated_timer.start();
}
// _num_collections now increases in gc_end, to count completed collections
if (recordGCBeginTime) {
_current_gc_stat->set_index(_num_collections+1);
_current_gc_stat->set_start_time(Management::timestamp());
}
if (recordPreGCUsage) {
// Keep memory usage of all memory pools
for (int i = 0; i < MemoryService::num_memory_pools(); i++) {
MemoryPool* pool = MemoryService::get_memory_pool(i);
MemoryUsage usage = pool->get_memory_usage();
_current_gc_stat->set_before_gc_usage(i, usage);
HS_DTRACE_PROBE8(hotspot, mem__pool__gc__begin,
name(), strlen(name()),
pool->name(), strlen(pool->name()),
usage.init_size(), usage.used(),
usage.committed(), usage.max_size());
}
}
}
void MemoryPool::record_peak_memory_usage() {
// Caller in JDK is responsible for synchronization -
// acquire the lock for this memory pool before calling VM
MemoryUsage usage = get_memory_usage();
size_t peak_used = get_max_value(usage.used(), _peak_usage.used());
size_t peak_committed = get_max_value(usage.committed(), _peak_usage.committed());
size_t peak_max_size = get_max_value(usage.max_size(), _peak_usage.max_size());
_peak_usage = MemoryUsage(initial_size(), peak_used, peak_committed, peak_max_size);
}
MemoryUsage PredicateIndex::getMemoryUsage() const {
// TODO Include bit vector cache memory usage
MemoryUsage combined;
combined.merge(_interval_index.getMemoryUsage());
combined.merge(_bounds_index.getMemoryUsage());
combined.merge(_zero_constraint_docs.getMemoryUsage());
combined.merge(_interval_store.getMemoryUsage());
combined.merge(_features_store.getMemoryUsage());
return combined;
}
// A collector MUST, even if it does not complete for some reason,
// make a TraceMemoryManagerStats object where countCollection is true,
// to ensure the current gc stat is placed in _last_gc_stat.
void GCMemoryManager::gc_end(bool recordPostGCUsage,
bool recordAccumulatedGCTime,
bool recordGCEndTime, bool countCollection,
GCCause::Cause cause) {
if (recordAccumulatedGCTime) {
_accumulated_timer.stop();
}
if (recordGCEndTime) {
_current_gc_stat->set_end_time(Management::timestamp());
}
if (recordPostGCUsage) {
int i;
// keep the last gc statistics for all memory pools
for (i = 0; i < MemoryService::num_memory_pools(); i++) {
MemoryPool* pool = MemoryService::get_memory_pool(i);
MemoryUsage usage = pool->get_memory_usage();
HS_DTRACE_PROBE8(hotspot, mem__pool__gc__end,
name(), strlen(name()),
pool->name(), strlen(pool->name()),
usage.init_size(), usage.used(),
usage.committed(), usage.max_size());
_current_gc_stat->set_after_gc_usage(i, usage);
}
// Set last collection usage of the memory pools managed by this collector
for (i = 0; i < num_memory_pools(); i++) {
MemoryPool* pool = get_memory_pool(i);
MemoryUsage usage = pool->get_memory_usage();
// Compare with GC usage threshold
pool->set_last_collection_usage(usage);
LowMemoryDetector::detect_after_gc_memory(pool);
}
if(is_notification_enabled()) {
bool isMajorGC = this == MemoryService::get_major_gc_manager();
GCNotifier::pushNotification(this, isMajorGC ? "end of major GC" : "end of minor GC",
GCCause::to_string(cause));
}
}
if (countCollection) {
_num_collections++;
// alternately update two objects making one public when complete
{
MutexLockerEx ml(_last_gc_lock, Mutex::_no_safepoint_check_flag);
GCStatInfo *tmp = _last_gc_stat;
_last_gc_stat = _current_gc_stat;
_current_gc_stat = tmp;
// reset the current stat for diagnosability purposes
_current_gc_stat->clear();
}
}
}
MemoryUsage
DataStoreBase::getMemoryUsage() const
{
MemStats stats = getMemStats();
MemoryUsage usage;
usage.setAllocatedBytes(stats._allocBytes);
usage.setUsedBytes(stats._usedBytes);
usage.setDeadBytes(stats._deadBytes);
usage.setAllocatedBytesOnHold(stats._holdBytes);
return usage;
}
void GCMemoryManager::gc_begin() {
assert(_last_gc_stat != NULL, "Just checking");
_accumulated_timer.start();
_num_collections++;
_last_gc_stat->set_index(_num_collections);
_last_gc_stat->set_start_time(Management::timestamp());
// Keep memory usage of all memory pools
for (int i = 0; i < MemoryService::num_memory_pools(); i++) {
MemoryPool* pool = MemoryService::get_memory_pool(i);
MemoryUsage usage = pool->get_memory_usage();
_last_gc_stat->set_before_gc_usage(i, usage);
HS_DTRACE_PROBE8(hotspot, mem__pool__gc__begin,
name(), strlen(name()),
pool->name(), strlen(pool->name()),
usage.init_size(), usage.used(),
usage.committed(), usage.max_size());
}
}
Handle MemoryService::create_MemoryUsage_obj(MemoryUsage usage, TRAPS) {
Klass* k = Management::java_lang_management_MemoryUsage_klass(CHECK_NH);
instanceKlassHandle ik(THREAD, k);
instanceHandle obj = ik->allocate_instance_handle(CHECK_NH);
JavaValue result(T_VOID);
JavaCallArguments args(10);
args.push_oop(obj); // receiver
args.push_long(usage.init_size_as_jlong()); // Argument 1
args.push_long(usage.used_as_jlong()); // Argument 2
args.push_long(usage.committed_as_jlong()); // Argument 3
args.push_long(usage.max_size_as_jlong()); // Argument 4
JavaCalls::call_special(&result,
ik,
vmSymbols::object_initializer_name(),
vmSymbols::long_long_long_long_void_signature(),
&args,
CHECK_NH);
return obj;
}
void PairwiseGenerator<FD>::report_size(ReportType type, MemoryUsage& res)
{
multipliers[0]->report_size(type, res);
res.add("shares",
a.report_size(type) + b.report_size(type) + c.report_size(type));
res.add("producer", producer.report_size(type));
res.add("my ciphertexts", C.report_size(CAPACITY));
res.add("serialized ciphertexts", ciphertexts.get_max_length());
res.add("serialized cleartexts", cleartexts.get_max_length());
res.add("generator volatile", volatile_memory);
res.add("b mod p", b_mod_q.report_size(type));
res += EC.memory_usage;
}
void assertMemoryUsage(const MemStats expStats) const {
MemoryUsage act = store.getMemoryUsage();
EXPECT_EQUAL(expStats._used, act.usedBytes());
EXPECT_EQUAL(expStats._hold, act.allocatedBytesOnHold());
EXPECT_EQUAL(expStats._dead, act.deadBytes());
}
static Handle createGcInfo(GCMemoryManager *gcManager, GCStatInfo *gcStatInfo,TRAPS) {
// Fill the arrays of MemoryUsage objects with before and after GC
// per pool memory usage
Klass* mu_klass = Management::java_lang_management_MemoryUsage_klass(CHECK_NH);
instanceKlassHandle mu_kh(THREAD, mu_klass);
// The array allocations below should use a handle containing mu_klass
// as the first allocation could trigger a GC, causing the actual
// klass oop to move, and leaving mu_klass pointing to the old
// location.
objArrayOop bu = oopFactory::new_objArray(mu_kh(), MemoryService::num_memory_pools(), CHECK_NH);
objArrayHandle usage_before_gc_ah(THREAD, bu);
objArrayOop au = oopFactory::new_objArray(mu_kh(), MemoryService::num_memory_pools(), CHECK_NH);
objArrayHandle usage_after_gc_ah(THREAD, au);
for (int i = 0; i < MemoryService::num_memory_pools(); i++) {
Handle before_usage = MemoryService::create_MemoryUsage_obj(gcStatInfo->before_gc_usage_for_pool(i), CHECK_NH);
Handle after_usage;
MemoryUsage u = gcStatInfo->after_gc_usage_for_pool(i);
if (u.max_size() == 0 && u.used() > 0) {
// If max size == 0, this pool is a survivor space.
// Set max size = -1 since the pools will be swapped after GC.
MemoryUsage usage(u.init_size(), u.used(), u.committed(), (size_t)-1);
after_usage = MemoryService::create_MemoryUsage_obj(usage, CHECK_NH);
} else {
after_usage = MemoryService::create_MemoryUsage_obj(u, CHECK_NH);
}
usage_before_gc_ah->obj_at_put(i, before_usage());
usage_after_gc_ah->obj_at_put(i, after_usage());
}
// Current implementation only has 1 attribute (number of GC threads)
// The type is 'I'
objArrayOop extra_args_array = oopFactory::new_objArray(SystemDictionary::Integer_klass(), 1, CHECK_NH);
objArrayHandle extra_array (THREAD, extra_args_array);
Klass* itKlass = SystemDictionary::Integer_klass();
instanceKlassHandle intK(THREAD, itKlass);
instanceHandle extra_arg_val = intK->allocate_instance_handle(CHECK_NH);
{
JavaValue res(T_VOID);
JavaCallArguments argsInt;
argsInt.push_oop(extra_arg_val);
argsInt.push_int(gcManager->num_gc_threads());
JavaCalls::call_special(&res,
intK,
vmSymbols::object_initializer_name(),
vmSymbols::int_void_signature(),
&argsInt,
CHECK_NH);
}
extra_array->obj_at_put(0,extra_arg_val());
Klass* gcInfoklass = Management::com_sun_management_GcInfo_klass(CHECK_NH);
instanceKlassHandle ik(THREAD, gcInfoklass);
Handle gcInfo_instance = ik->allocate_instance_handle(CHECK_NH);
JavaValue constructor_result(T_VOID);
JavaCallArguments constructor_args(16);
constructor_args.push_oop(gcInfo_instance);
constructor_args.push_oop(getGcInfoBuilder(gcManager,THREAD));
constructor_args.push_long(gcStatInfo->gc_index());
constructor_args.push_long(Management::ticks_to_ms(gcStatInfo->start_time()));
constructor_args.push_long(Management::ticks_to_ms(gcStatInfo->end_time()));
constructor_args.push_oop(usage_before_gc_ah);
constructor_args.push_oop(usage_after_gc_ah);
constructor_args.push_oop(extra_array);
JavaCalls::call_special(&constructor_result,
ik,
vmSymbols::object_initializer_name(),
vmSymbols::com_sun_management_GcInfo_constructor_signature(),
&constructor_args,
CHECK_NH);
return Handle(gcInfo_instance());
}
bool is_low_threshold_crossed(MemoryUsage usage) {
if (_support_low_threshold && _low_threshold > 0) {
return (usage.used() < _low_threshold);
}
return false;
}
bool is_high_threshold_crossed(MemoryUsage usage) {
if (_support_high_threshold && _high_threshold > 0) {
return (usage.used() >= _high_threshold);
}
return false;
}
