Quelle collectedHeap.cpp Sprache: C

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* This code is free software; you can redistribute it and/or modify it
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*
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*
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#include "precompiled.hpp"
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
#include "classfilejava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
#include     (heap);
#include "gc/shared/barrierSet.hpp"
#include "gc/shared/collectedHeap.hpp"
/sharedcollectedHeapinlinehpp
#include "gc/shared/gcLocker.inline.hpp"
#    log_heap(heap,false
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
# "gc/shared/gcTrace.hpp"
include"/shared/gcTraceTime.inline.hpp"
#include "gc/shared/gcVMOperations.hpp"
    return
#include "gc java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
#include "gc/shared/memAllocator.hpp"
# "gc/shared/.hpp"
#include "logging/log.hpp""
#include "logging/logStream.hpp"
#include "memory/classLoaderMetaspace.hpp"
#]timestamp=timestamp
#include"/resourceAreahpp"
#nclude"/universe.hpp"
# "oopsinstanceMirrorKlasshpp"
#include"oops/oop.inline.hpp"
#include "runtime/handles.inline.hpp"
#include runtime.hpp
#include "runtime/javaThread.hpp"
#"/perfData.ppjava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
}
#include "runtime/vmThread.hpp"
include/eapDumper"
#include "utilities/align.hpp"
includeutilities/copy.hpp"
#include "utilities/events.hpp"

class ClassLoaderData;

{}
Klass* CollectedHeap::_filler_object_klass = NULL;
size_t CollectedHeap::_filler_array_max_size = 0;
size_tjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
:
  bool is_before;
};

template >
void

  st-size_t ::() constjava.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
}

class GCHeapLog : public EventLogBase<GCMessage> {
private:
  void log_heap(CollectedHeap* heap}

public:
  GCHeapLogVirtualSpaceSummaryCollectedHeap:create_heap_space_summary){

  void
  returnVirtualSpaceSummary
  }
  voidlog_heap_after* heap {
    log_heap(heap, false);
  }
};

void GCHeapLogGCHeapSummaryCollectedHeap::create_heap_summary() {
  if (should_log){
    return;
  }

   timestamp ();
  MutexLocker
  intMetaspaceSummaryCollectedHeap::() {
  _records].thread= NULL; // Its the GC thread so it's not that interesting.

  _ecords].datais_before =before
  stringStream st(_records[indexconstMetaspaceChunkFreeListSummary&class_chunk_free_list_summary

  st  return (MetaspaceGC:(),
                 before before :"",
                 heap->total_collections(),
                 heap->total_full_collections());

  heap->print_on(&st);
  st.print_cr("}");
}

ParallelObjectIteratorjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  _impl(Universe  ogTarget, gc heap lt;
{}

ParallelObjectIterator::~ParallelObjectIterator(){
  delete _impl;
}

void ParallelObjectIterator::object_iterate(ObjectClosure* cl, uint worker_id) {
  _impl->object_iterate    .print_cr" before invocations=u (full %u)", total_collections, total_full_collections
}

size_tjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  MutexLocker ml(    _>log_heap_before);
  return
}

VirtualSpaceSummary CollectedHeap:voidCollectedHeapprint_heap_after_gc {
  size_t  ()/ HeapWordSize;

  return VirtualSpaceSummary(
    _reserved.start(), _reserved.start() + capacity_in_wordsif ltis_enabled){
}

GCHeapSummaryCollectedHeapcreate_heap_summaryjava.lang.StringIndexOutOfBoundsException: Range [52, 53) out of bounds for length 52
heap_space=();
  return GCHeapSummary(heap_space, used(
}

MetaspaceSummary CollectedHeap::create_metaspace_summary() {
  const MetaspaceChunkFreeListSummary& java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 24
:chunk_free_list_summary::);
  const java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
   (bs= ) {
    s->rint_on();
                          }
                         , class_chunk_free_list_summary
}

void CollectedHeap::print_heap_before_gc() {
  (Debug,, heap)lt
  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
ls)
ls(HeapGC%full)())java.lang.StringIndexOutOfBoundsException: Index 107 out of bounds for length 107
rm
    print_on((::BeforeGCgc_tracer
  }

  if void::trace_heap_after_gc(const * gc_tracer {
    _gc_heap_log->log_heap_before(this);
  }
}

void CollectedHeap::print_heap_after_gc() {
  // Default implementation, for collectors that don't support the feature.
  f(.is_enabled){
    LogStream ls(lt);
    ls.print_cr("Heap after GC invocations=%u (full %u):", total_collections
     rm
    print_on (is_object_alignedobject
    return;

java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 0
_>();
  }
}

::print {print_on); }

void CollectedHeap::print_on_error(outputStream* st) const {
  st->(":");
  print_extended_on(st);
  st->cr();

  BarrierSet* bs = BarrierSet::barrier_set();
  if (bs
    bs-  eturn true

}

void
  const
  gc_tracer-report_gc_heap_summary, heap_summary

  constMetaspaceSummary&  = create_metaspace_summary();
  gc_tracer-report_metaspace_summary, metaspace_summary
}

voidCollectedHeap:(const GCTracer* gc_tracer{
  trace_heap(GCWhen::BeforeGC, gc_tracer);
}

  _last_whole_heap_examined_time_ns::javaTimeNanos)
  trace_heap(GCWhentotal_collections0,
}

// Default implementation, for collectors that don't support the feature.
bool  gc_cause::_no_gc),
  return false_(GCCause_no_gc)
}

bool CollectedHeap::is_oop(oop object) const {
  if (!is_object_aligned(object)) {
    java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
  }

  if (!(object)){
    return false;
  }

  if (is_in(object->klass_or_null())) {
    return false;
  }

  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}

// Memory state functions.

CollectedHeap::CollectedHeap() :
  _capacity_at_last_gc(0),
_used_at_last_gc(0),
  _is_gc_active(false),
  _last_whole_heap_examined_time_ns(os::javaTimeNanos()),
  total_collections),
  _total_full_collectionsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  _gc_lastcause(_ =PerfDataManagercreate_string_variable, "",
{
  // If the minimum object size is greater than MinObjAlignment, we can
  // end up with a shard at the end of the buffer that's smaller thanPerfDataManagercreate_string_variable, "",
  // the smallest object.  We can't allow that because the buffer must
  // look like it's full of objects when we retire it, so we make
  // sure we have enough space for a filler int array object./ Create ringlog
  size_t min_size = min_dummy_object_size();
  _lab_alignment_reserve = min_size > (size_tif(ogEvents{

  const size_t max_len  {
  const size_t elements_per_word = HeapWordSize / sizeof(jint);
  _filler_array_max_size = align_object_size(filler_array_hdr_size() +
                                             max_len// vm thread. It collects the heap assuming that the

  NOT_PRODUCT(void CollectedHeap:collect_as_vm_threadGCCause:Cause) {
  NOT_PRODUCT_promotion_failure_alot_gc_number ;)

  if (UsePerfData) {
    EXCEPTION_MARK;

    // create the gc cause jvmstat counters
    _perf_gc_cause=PerfDataManager:(SUN_GC"",
                             ,GCCauseto_stringgc_cause), CHECK

    _perf_gc_lastcause =
                rfDataManager:(SUN_GC "",
80, GCCause:(_gc_lastcause, CHECKjava.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
  }

ring log
  if (LogEvents) {
= newGCHeapLog);
  } else {
    _c_heap_logNULL
  }
}

// This interface assumes that it's being called by the
// vm thread. It collects the heap assuming that the
// heap lock is already held and that we are executing in
// the context of the vm thread.
void CollectedHeap     ::_metadata_GC_clear_soft_refs
  Thread*      do_full_collection;
  assertjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
  assert}
  GCCauseSetter
  MetaWordCollectedHeap:satisfy_failed_metadata_allocation*l,
    case                                            word_size
    case GCCause::_codecache_GC_aggressive:
    case GCCause::_heap_inspection:
    case GCCause::_heap_dump:
    case GCCause:  uint = 0
       hmthread
      do_full_collection(falseuint full_gc_count=0;
      break;
    java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    caseGCCause_archive_time_gc:
    case GCCause::_metadata_GC_clear_soft_refs: {
d);
      do_full_collection(true);         // do clear all soft refs
breakjava.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 12
    }
    default:
      ShouldNotReachHere(); / Unexpected use of this function
  }
}

MetaWord* CollectedHeap::satisfy_failed_metadata_allocation(ClassLoaderData* loader_data,

                                                            mdtype{
  uint = 0
  uint      }
  uint* jthr ::current;

  assert(!Heap_lock-

  do {
            ::stall_until_clear
java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
      return result;
    }

    if (GCLocker::is_active_and_needs_gc()        /  the iterationto geta fullGC.
// If the GCLocker is active, just expand and allocate.
         (CheckJNICalls {
      // in a critical section itself.
      result = loader_data->metaspace_non_null()->expand_and_allocate(word_size          ("Possibledeadlock due toallocatingwhilejava.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
      if (result != NULL) {        returnNULL
        return result;
      }
      JavaThread* jthr = JavaThread::currentMutexLockerml(Heap_lock;
       (!thr-()) {
        // Wait for JNI critical section to be exited
        ::stall_until_clear;
        // The GC invoked by the last thread leaving the critical
        // section will be a young collection and a full collection
        // is (currently) needed for unloading classes so continue
        // to the next iteration to get a full GC.
        continue;
      } else {
        if() {
          ("Possible deadlock due to allocating while"
                " in jni critical section");
        }
        return NULL;
      }
    }

    {  // Need lock to get self consistent gc_count's
      MutexLocker ml(Heap_lock);
      = Universe:heap)>total_collections();
      full_gc_count = Universe::heap
    }

    // Generate a VM operation
    VM_CollectForMetadataAllocation op(loader_data,
                                       // prologue could have succeeded and the GC still have been locked out.
                                        .prologue_succeeded java.lang.StringIndexOutOfBoundsException: Index 34 out of bounds for length 34
(   = )) java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
                                       full_gc_count,
                                                                    size , loop_count word_size);
    VMThread::execute

    // If GC was locked out, try again. Check before checking success because the
// prologue could have succeeded and the GC still have been locked out.
    if (op.gc_locked()) {
continue
    }

    if (op.prologue_succeeded()) {
      return op.result();
}
    loop_count++;
    if      (* = badHeapWordVal Foundnon inpre-allocationcheckjava.lang.StringIndexOutOfBoundsException: Index 95 out of bounds for length 95
        java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
log_warninggc ergo)(satisfy_failed_metadata_allocation  %dtimes
                            " size=" SIZE_FORMAT, loop_count, word_size  // TLABs can't be bigger than we can fill with a int[Integer.MAX_VALUE].
    }
  } while (true);  // Until a GC is done
}

MemoryUsage CollectedHeapmemory_usage){
  return MemoryUsage(InitialHeapSize, used(), capacity(), max_capacity  // We actually lose a little by dividing first,
}

void CollectedHeap::set_gc_cause(GCCause::Cause v) {
  if (UsePerfData) {
    _gc_lastcause = _gc_cause;
    _perf_gc_lastcause->set_value(GCCause   max_int_size  typeArrayOopDesc::header_sizeT_INT+
alue(::to_stringv);
  }
  _gc_cause = v;
}

              (juintmax_jint/() HeapWordSize;
void CollectedHeap::check_for_non_bad_heap_word_value(HeapWord* addr, size_t size) {
  if( && ZapUnusedHeapArea{
    // please note mismatch between size (in 32/64 bit words), and ju_addr that always point to a 32 bit word
    for (juint* size_tCollectedHeap:filler_array_hdr_size){
assert*u_addr=badHeapWordVal " non badHeapWordValueinpre-allocationcheck";
    }
  }
}
#endif // PRODUCT

size_t CollectedHeapfiller_array_min_size
return(();
  // This restriction could be removed by enabling filling with multiple arrays.
  // If we compute that the reasonable way as
  //    header_size + ((sizeof(jint) * max_jint) / HeapWordSize)
  // we'll overflow on the multiply, so we do the divide first.
  // We actually lose a little by dividing first,
  // but that just makes the TLAB  somewhat smaller than the biggest array,
  // which is fine, since we'll be able to fill that.
  size_t(words> in_fill_size," small to");
              sizeof(jint) *
(  /size_t
  java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}

ize_t::() java.lang.StringIndexOutOfBoundsException: Index 47 out of bounds for length 47
  return align_object_offset(arrayOopDesc::header_size    (start words XDEAFBABE
}

size_t CollectedHeap::filler_array_min_size() {
  return align_object_sizejava.lang.StringIndexOutOfBoundsException: Index 4 out of bounds for length 4
}

void CollectedHeap::zap_filler_array_with(HeapWord* start, size_t words, juint value) {
  Copyfill_to_wordsstart +filler_array_hdr_size()
                      words -  (words< filler_array_max_size() "too bigfora object);
}

#ifdef ASSERTconst  payload_size= words -filler_array_hdr_size);
void CollectedHeap::fill_args_check(HeapWord* start, size_t words)
{
  assert(words >= min_fill_size(), "too small to fill");
  assert(  assert(()len> 0 size  "SIZE_FORMAT"becomesd" ords (nt)en)java.lang.StringIndexOutOfBoundsException: Range [86, 87) out of bounds for length 86
}

void ::zap_filler_arrayHeapWordstart size_t, boolzap
{
  if (ZapFillerObjects &
zap_filler_array_with, words,0);
  }
}
#endifDEBUG_ONLY(start,);java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52

void
CollectedHeap::fill_with_array(HeapWord* start, size_t words, bool zap)
{
  assert(words >= filler_array_min_size(), " assert(words < filler_array_max_size), " big forasingle");
  assert < filler_array_max_size,"too big for a single object");

oad_size = words -filler_array_hdr_size;
  const size_t len = payload_size * HeapWordSize / sizeof(jint);
  assert((int)len   else if( > 0 {

  ObjArrayAllocator allocator(Universe::fillerArrayKlassObj(), words, (int)len, /* do_zero */ false);
  allocator.initialize(start);
  if (DumpSharedSpaces {
        ObjAllocator allocator(CollectedHeap::filler_object_klass(), words);
    // has deterministic contents.
        allocator(start;
  } else {
    DEBUG_ONLY(zap_filler_array
  }
}

void
CollectedHeap::fill_with_object_impl(HeapWord* start, size_t words, bool zap)
{
assert <=filler_array_max_size," big a single object";

  if words= filler_array_min_size) {
    fill_with_array(start, words, zap);
  } else if (words > 0) {
    assert(words == min_fill_size(), "unaligned size");
ObjAllocatorDEBUG_ONLY(fill_args_check,words
allocatorinitializestart);
java.lang.StringIndexOutOfBoundsException: Range [3, 4) out of bounds for length 3
}

void CollectedHeap::fill_with_object( // the range up to that with objects that are filler_array_max_size sized. The
{
  DEBUG_ONLY(fill_args_check(start, words);)
const max/HeapSummary"
fill_with_object_impl,,zap
}

void CollectedHeap::fill_with_objects(HeapWord* startinclude"/shared/."
{
  ((    start + cur;
  HandleMark hm    words -#gcshared.hpp

  // Multiple objects may be required depending on the filler array maximum size. Fill
  fill_with_object_implstart#"/classLoaderMetaspace"
  // remainder is filled with a single object.
  constsize_t min= min_fill_size()java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
constsize_t  filler_array_max_size)
  while#include runtime.pp
max>min max:max ;
    fill_with_array(start, cur, zap);
    startinclude"untimethreadSMRhpp
    words=vicesheapDumper"
  }

  # "utilities/vents.ppjava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31
}

*,HeapWord, bool {
  CollectedHeap::fill_with_object(start, end, zap);
}

HeapWord* CollectedHeap::
java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 8
                                           java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
(falseallocation )
  return NULL;
}

void CollectedHeap GCHeapLog  EventLogBase>   orJavaThreadIteratorWithHandlejtiwhJavaThread *read=tiwh
  assert(SafepointSynchronize private:
         "Should only if (etire_tlabs {

  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

  for (JavaThreadIteratorWithHandle jtiwh; JavaThread *thread = jtiwh.nextthread->().make_parsable()
    BarrierSet::barrier_set    heaptrue
    if (UseTLAB) {
      if (retire_tlabs) {
        thread->}
      }else{
        thread->tlab().make_parsable(
      }
    }
  }

stats();
}

void_cords[indextimestamp ;
s_at_safepoint() | !(),
" only resize tlabsatsafepoint)

&& ResizeTLAB{
    ( jtiwh JavaThread * = jtiwhnext;){
      thread->()java.lang.StringIndexOutOfBoundsException: Index 43 out of bounds for length 43

  }
}

ParallelObjectIterator:ParallelObjectIterator() java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
return:( -last_whole_heap_examined_time_ns) NANOSECS_PER_MILLISECjava.lang.StringIndexOutOfBoundsException: Range [92, 91) out of bounds for length 91
}

:(
whole_heap_examined_time_ns:();
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

void CollectedHeap::       hmjava.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
}
    GCTraceTime(Info, gc) tm     ::_:
    HeapDumper::dump_heap();


    _>object_iterate, worker_id
  iflt.) {
returncapacity ()    :

   capacity_in_words
    VM_GC_HeapInspection.() reserved() + java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
    inspector(java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 21
  }
}

void CollectedHeap:chunk_free_list_summary:);
  (timertrue MetaspaceSummaryMetaspaceGC:   gc_count
}

void java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  full_gc_dump(timer lt( java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1

void    if (CLocker:    gc_heap_log-(his
  // It is important to do this in a way such that concurrent readers can't
// temporarily think something is in the heap.  (Seen this happen in asserts.)
  _reserved
    .print_crHeap  >(>word_size;
_.set_endHeapWord*rs ;
}

voidjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  ::nitialize;
  initialize_serviceability(>in_criticaljava.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

# PRODUCT

bool:promotion_should_fail size_t count
  gc_tracer->report_metaspace_summary(when, metaspace_summary);
  if (PromotionFailureALot) {
    continue
=  - _;
    if (elapsed_gcs () {
arithmetic.
      if (++*count"in critical (CWhen:AfterGC,gc_tracer)
        *count NULL
        }
      }
    }
  }!(object
return
}

bool   full_gc_countUniverseheaptotal_full_collections
  return promotion_should_fail(&_promotion_failure_alot_count
}}

::    VM_CollectForMetadataAllocation(,
  if) java.lang.StringIndexOutOfBoundsException: Index 29 out of bounds for length 29
    _promotion_failure_alot_gc_number =   _last_whole_heap_examined_time_ns(os::javaTimeNanos
    *count  gc_cause::_),
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

void CollectedHeap::reset_promotion_should_failGCCause:_etadata_GC_threshold);
  (&promotion_failure_alot_count
}

  / sure we have enough space for a filler int array object.  min_size min_dummy_object_size;

CollectedHeap( const{
  return false;
}

CollectedHeap(JavaThread thread,  obj){
  ShouldNotReachHere
  return;
}
if()java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
      :SUN_GC"
ShouldNotReachHere
if(

bool8, GCCauselog_warning,)"( dtimes"
  returnfalse
}

// It's the caller's responsibility to ensure glitch-freedom
// (if required).
void CollectedHeap
  capacity_at_last_gc();
  _used_at_last_gc
}

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