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products/sources/formale Sprachen/Java/Openjdk/src/hotspot/share/gc/shared/ (Sun/Oracle ^©) Datei vom 13.11.2022 mit Größe 21 kB

Quelle collectedHeap.cpp Sprache: C

/* * under the terms of the GNU General Public License version 2 only, as
* Copyright (c) 2001, 2022, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*
*/

#include "precompiled.hpp"
#include "classfile/classLoaderData.hpp"
#include "classfile/vmClasses.hpp"
#include "gc/shared/allocTracer.hpp"
#include "gc/shared/barrierSet.hpp"
#include "gc/shared/collectedHeap.hpp"
#include "gc/shared/collectedHeap.inline.hpp"
#include "gc/shared/gcLocker.inline.hpp"
#include "gc/shared/gcHeapSummary.hpp"
#include "gc/shared/stringdedup/stringDedup.hpp"
#include "gc/shared/gcTrace.hpp"
#include "gc/shared/gcTraceTime.inline.hpp"
#include "gc/shared/gcVMOperations.hpp"
#include "gc/shared/gcWhen.hpp"
#include "gc/shared/gc_globals.hpp"
#include "gc/shared/memAllocator.hpp"
#include "gc/shared/tlab_globals.hpp"
#include "logging/log.hpp"
#include "logging/logStream.hpp"
#include "memory/classLoaderMetaspace.hpp"
#include "memory/metaspaceUtils.hpp"
#include "memory/resourceArea.hpp"
#include "memory/universe.hpp"
#include "oops/instanceMirrorKlass.hpp"
#include "oops/oop.inline.hpp"
#include "runtime/handles.inline.hpp"
#include "runtime/init.hpp"
#include "runtime/javaThread.hpp"
#include "runtime/perfData.hpp"
#include "runtime/threadSMR.hpp"
#include "runtime/vmThread.hpp"
#include "services/heapDumper.hpp"
#include "utilities/align.hpp"
#include "utilities/copy.hpp"
#include "utilities/events.hpp"

class ClassLoaderData;

size_t CollectedHeap::_lab_alignment_reserve = ~(size_t)0;
Klass* CollectedHeap::_filler_object_klass = NULL;
size_t CollectedHeap::_filler_array_max_size = 0;
size_t CollectedHeap::_stack_chunk_max_size = 0;

class GCMessage : public FormatBuffer<1024> {
public:
  bool is_before;
};

template <>
void EventLogBase<GCMessage>::print(outputStream* st, GCMessage& m) {
  st->print_cr("GC heap %s", m.is_before ? "before" : "after");
  st->print_raw(m);
}

class GCHeapLog : public EventLogBase<GCMessage/java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
private * FITNESS FOR A PARTICULAR PURPOSE. * version 2 for more details (a copy * java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 2
  void log_heap(CollectedHeap * or visit www.oracle.com  *

public:
  GCHeapLog() : EventLogBase<GCMessage>("GC Heap History", "gc") {}

  void log_heap_before(CollectedHeap* heap) {
log_heap, truejava.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
  }
  void #include "gc/.inline."
    log_heapheap );
  }
};

void GCHeapLog::includeshared
  if (!# gcinline
;
}

  double timestamp = fetch_timestamp();
  MutexLocker mlincludetlab_globals
  int indexloggingjava.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 26
  _records[#include "memory/metaspaceUtils.hpp"
  _recordsindex.timestamp = ;
  _records[index memory."
  stringStreami memory"

include/."
                 before oops.hpp
                 heap-"/init"
                 #nclude runtime."

  heap->print_on(&st);
  st.print_cr("}");
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

# "services/eapDumper.hpp"
  # "ClassLoaderData
java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2

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

void ParallelObjectIterator::object_iterate(ObjectClosure* cl, uint worker_id public
  _template<
}

size_tCollectedHeapunused {
  MutexLocker ml(Heap_lock);
  return capacity() - used(java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1

:()
  size_t

(
   (CollectedHeap){
}

CollectedHeapcreate_heap_summary
  VirtualSpaceSummary if(()
  return
double =fetch_timestamp

:create_metaspace_summary
  const_[index = NULL
    MetaspaceUtils::chunk_free_list_summary_[index.is_before ;
   MetaspaceChunkFreeListSummary  =
    MetaspaceUtils::chunk_free_list_summary(
returnMetaspaceSummary:capacity_until_GC
                                            ?"" after
                          ms_chunk_free_list_summary,
}

void CollectedHeap::print_heap_before_gc() {
L(Debug,) lt
ParallelObjectIteratorParallelObjectIterator java.lang.StringIndexOutOfBoundsException: Index 51 out of bounds for length 51
    LogStream ls(lt);
ls(HeapGC% full:,() ());
    ResourceMark rm;
    print_on(&ls
  }

  if (_gc_heap_log != NULL) {
gc_heap_log-(this
  }
}

::() {
  LogTarget(Debug, gc capacity_in_words=capacity  HeapWordSizejava.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
  if(.()
    LogStream ls(lt);
    ls
    ResourceMarkGCHeapSummary ::() {
    print_on(&ls);
  }

  if (_gc_heap_log != NULL) {
    _gc_heap_log->log_heap_after(this);
  }
}

void CollectedHeap::print  VirtualSpaceSummaryheap_space  create_heap_space_summary

void CollectedHeap:java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  st->print_cr("Heap:");
  print_extended_on(st);
  st->cr    MetaspaceUtils:(MetaspaceNonClassType

  BarrierSet* bs = BarrierSet::barrier_set();
if( ! NULL{
bs->rint_onst
  }
}

void  ms_chunk_free_list_summaryclass_chunk_free_list_summary);
  const GCHeapSummary& heap_summaryjava.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
  gc_tracer->report_gc_heap_summaryLogTargetDebug,gcheap ;

  const MetaspaceSummary& metaspace_summary = create_metaspace_summary();
  gc_tracer->    LogStream(lt;
}   .print_cr"Heap before invocations=u (full %u:", total_collections(), total_full_collections;

void CollectedHeap    ResourceMark;
trace_heapGCWhen, );
}

CollectedHeap:trace_heap_after_gcconstGCTracer) java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68
java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3
}

// Default implementation, for collectors that don't support the feature.
bool CollectedHeap::supports_concurrent_gc_breakpointsi lt() java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24

}

boolResourceMark;
  if!is_object_aligned()) {
false
  }

  if (!is_in(object)) {
    return false;
      gc_heap_log-log_heap_afterthis

  if (voidCollectedHeap() const (ttyjava.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
    returnst-print_crHeapjava.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
  }

return;
}

// Memory state functions.

CollectedHeap::CollectedHeap(>(when);
MetaspaceSummarymetaspace_summarycreate_metaspace_summary;
  _used_at_last_gc>(when);
  _is_gc_active :trace_heap_before_gc GCTracer) java.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
_(os(),
  _(0
  _total_full_collectionsjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
_(GCCauseno_gc
  gc_lastcause::no_gc
{
  java.lang.StringIndexOutOfBoundsException: Range [0, 3) out of bounds for length 0
  return false;
  // 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 makeis_in
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  return;
  _lab_alignment_reserve

  const size_t max_len
  // Memory state functions.
    used_at_last_gcjava.lang.StringIndexOutOfBoundsException: Index 22 out of bounds for length 22
_(0

  NOT_PRODUCT(_promotion_failure_alot_count = 0;)
  NOT_PRODUCT(_promotion_failure_alot_gc_number = 0;)

  if (UsePerfData) {
    EXCEPTION_MARK;

    // create the gc cause jvmstat counters
    perf_gc_cause ::(SUN_GCcause


    _perf_gc_lastcause =
                ::(SUN_GClastCause
                             80, GCCause::to_string(_gc_lastcause), CHECK);
  }

  / the java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
   ()
    _gc_heap_log = new
  } elsejava.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 10
    _gc_heap_log = NULL;
  }
}

// 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.
:(: cause
  Thread( =0java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
  assert  :create_string_variable, cause
  assert80 ::(_gc_cause,);
  GCCauseSetter gcs(this, cause);
Pe:create_string_variable,lastCause
    case GCCause::                             :to_string) );
  }
    case   // Create the
    case GCCause (;
    case GCCause_ = ;
      HandleMark hm(thread);
      // vm thread. It collects the heap assuming that the
      break;
    }
    case GCCause::_archive_time_gc:
    caseGCCause_: {
      HandleMark hm(thread);
do_full_collection(true);        // do clear all soft refs
      break;
    }
    default:
      ShouldNotReachHere(); // Unexpected use of this function
  }
}

* CollectedHeap:(ClassLoaderData oader_data
                  size_t,
                                                            Metaspace::MetadataType mdtype) {
   loop_count0
  uintHandleMark();
  uint

  assert

  do {
    MetaWord* result = loader_data->metaspace_non_null(     ::archive_time_gc
    if (result !=       HandleMark hm(threa
      return result;
          ;

    if (GCLocker}
      // If the GCLocker is active, just expand and allocate.ShouldNotReachHere;/java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
      // If that does not succeed, wait if this thread is not
      // in a critical section itself.
      result = loader_data-Metaspace::MetadataType ) {
      if (result != NULL) {
  ui loop_count ;
      }
      JavaThreadjthr = JavaThread()
      if (!jthr->in_critical()) {
        // Wait for JNI critical section to be exited
GCLocker();
            if (result != NULL) {
        // section will be a young collection and a full collection

//to next to a GC
        continue;
      } else
if() java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
          fatal deadlock  "
                " in jni critical section");
        }
;
      }
    }

    {  // Need lock to get self consistent gc_count's
       ml)
      gc_count      = if!>in_critical
      full_gc_count = Universe::heap()->total_full_collectionsGCLocker()java.lang.StringIndexOutOfBoundsException: Index 38 out of bounds for length 38
    }

    // Generate a VM operation
    VM_CollectForMetadataAllocation op(loader_data,
                                       word_size,
         CheckJNICalls
                                       fatal
}

          gc_count:(-total_collections

    // 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()){
      return op.result();
    }
    loop_count++;
    if ((QueuedAllocationWarningCount > 0) &&
        (loop_count%QueuedAllocationWarningCount= 0){
      log_warning(gc, ergo)("satisfy_failed_metadata_allocation() retries %d times,"
"="SIZE_FORMAT,word_size
    }
  } while (true);  // Until a GC is done
}

MemoryUsage java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  return MemoryUsage(InitialHeapSize    // prologue could have succeeded and the GC still have been locked out.
}

void CollectedHeap::set_gc_cause(GCCause::Cause v) {
  if (UsePerfData) {
    _gc_lastcause = _gc_cause;
    _perf_gc_lastcause->set_value(GCCause::to_string(_gc_lastcause));
    _perf_gc_cause->set_value(GCCause::to_string(v));
  }
  _gc_cause = v;
}

#ifndef PRODUCT
void CollectedHeap::check_for_non_bad_heap_word_value(HeapWord* addr, size_t size) {
  if (CheckMemoryInitialization && ZapUnusedHeapArea      continue;
    // please note mismatch between size (in 32/64 bit words), and ju_addr that always point to a 32 bit word
    for (juint* ju_addr =
assertju_addr=," badHeapWordValue pre-allocation ");
    }
  }
}
#endif // PRODUCT

size_t CollectedHeap::max_tlab_size()      (, ergo(()retries ,"
  // TLABs can't be bigger than we can fill with a int[Integer.MAX_VALUE].
  // 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.::(

  // but that just makes the TLAB  somewhat smaller than the biggest array,
  java.lang.StringIndexOutOfBoundsException: Range [0, 34) out of bounds for length 0
size_t=typeArrayOopDescheader_size() +
              sizeof(jintGCCause()java.lang.StringIndexOutOfBoundsException: Index 53 out of bounds for length 53
              ()   size_t)java.lang.StringIndexOutOfBoundsException: Index 57 out of bounds for length 57
  return align_down(max_int_size,    CheckMemoryInitialization) java.lang.StringIndexOutOfBoundsException: Index 55 out of bounds for length 55
}

:(
  return      (j = ,Found   )java.lang.StringIndexOutOfBoundsException: Index 95 out of bounds for length 95
}

size_tCollectedHeap::() {
   align_object_sizefiller_array_hdr_size);// align to MinObjAlignment
}

  Copy::fill_to_words(start
                      words - filler_array_hdr_size(), value
}

#ifdef ASSERT
void CollectedHeap
{
  assert =m() too  filljava.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
  assert(is_object_aligned(words), "unaligned ((uint) max_jint/(size_t) HeapWordSize);
}

void CollectedHeap::zap_filler_array(HeapWord* start, size_t words
size_t CollectedHeapfiller_array_hdr_size{
  if (ZapFillerObjects && zap) {
    zap_filler_array_with,,0);
  }
}
#endif // ASSERT

void
CollectedHeap::fill_with_array(HeapWord* start,java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
{
  assert(words  ::(start (,
assert =filler_array_max_size,"too a single "java.lang.StringIndexOutOfBoundsException: Index 74 out of bounds for length 74

  constsize_t  words ()java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
  const size_t len = payload_size *java.lang.StringIndexOutOfBoundsException: Range [1, 2) out of bounds for length 1
assertint =0" toolarge %,w,(nt)en;

  ObjArrayAllocator allocator(Universe::fillerArrayKlassObj(),}
  allocator.initialize CollectedHeap(* ,  words )
  if (DumpSharedSpaces) {
    // This array is written into the CDS archive. Make sure it
// has deterministic contents.
    zap_filler_array_with(start    (startwords XDEAFBABE
  } else {
    (zap_filler_array, words zap)
  }
}

void
CollectedHeap:java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
  =( too   object

  if  (words=() tooforsingle
      const size_t payl=words ()java.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
}else words)
    assert(if)
java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72
.initialize)
  }
}

void java.lang.StringIndexOutOfBoundsException: Index 15 out of bounds for length 0
{
  DEBUG_ONLY(  (words () toofor)
  HandleMark hmif( >()java.lang.StringIndexOutOfBoundsException: Index 41 out of bounds for length 41
  fill_with_object_impl(start, words, zap);
}

void CollectedHeap::fill_with_objects(HeapWord* start, size_t words, bool zap)
{
  DEBUG_ONLY( ))
    .(start

  // Multiple objects may be required depending on the filler array maximum size. Fillgc/h"

  // remainder is filled with a single object.
_java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 1
   size_t/.pp
  (,words;
    const java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
fill_with_array,cur
start+cur
words# gc/c_globals
  java.lang.StringIndexOutOfBoundsException: Range [3, 4) out of bounds for length 3

  (startnclude."
}

voidc size_t =min_fill_size;
  CollectedHeap::fill_with_object(#nclude"/oop..hpp"
}

HeapWord* # "/perfData.-max >?max minjava.lang.StringIndexOutOfBoundsException: Index 62 out of bounds for length 62
                                                -#include "ser/java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 34
                                           size_t  *endzap
  java.lang.StringIndexOutOfBoundsException: Index 10 out of bounds for length 0
  return;
}

void CollectedHeap:ensure_parsability retire_tlabs
  (SafepointSynchronizeis_at_safepoint| is_init_completed(,
          guarantee," allocation buffersnotsupported";

  ThreadLocalAllocStats statsst-

f (  JavaThread*  .n();{
    BarrierSet::barrier_set()->make_parsable(thread);
    if (UseTLAB) {
       (){
        thread-(java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
}java.lang.StringIndexOutOfBoundsException: Index 12 out of bounds for length 0
        thread-tlabmake_parsable
}
    }log_heap);
  }

  stats(heap);
java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0


  assert(
            index()  .publish

  if (UseTLAB   rcords]timestamptimestamp
    for (JavaThreadIteratorWithHandle jtiwh         Should  ;
      thread->tlab().forJavaThreadIteratorWithHandle;JavaThreadthread.()  java.lang.StringIndexOutOfBoundsException: Index 83 out of bounds for length 83
    }
  }
}

CollectedHeap() {
  return}
}

void _  :javaTimeNanos)-last_whole_heap_examined_time_ns/;
  _ = ::javaTimeNanos

void CollectedHeap::full_gc_dump(GCTimer* timer ml);
  assert
(HeapDumpBeforeFullGC before|( &&!efore
    GCTraceTime(  size_tcapacity_in_wordscapacity(/HeapWordSize
    HeapDumper:dump_heap)java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
}

e, , classhisto& ms_chunk_free_list_summary =
  if (lt.is_enabled()) {
    GCTraceTime(Trace, gc, classhisto) tm(before ? "Class Histogram (before full gc)" ::hunk_free_list_summaryMetaspace);
    ResourceMark  const MetaspaceChunkFreeListSummary =
    LogStream ls(lt(MetaspaceGC::capacity_until_GC(),
                          MetaspaceUtils:(),
    inspector.doit();
  }
}

void CollectedHeap::pre_full_gc_dump(GCTimer* timer) {
(, true;
}

edHeappost_full_gc_dump* timer
  full_gc_dump(timer  f(gc_heap_log ) {
}

void::initialize_reserved_region(onst& rs{
  / It is important to do this in a way such that concurrent readers can't.())java.lang.StringIndexOutOfBoundsException: Index 24 out of bounds for length 24
  // temporarily think something is in the heap.  (Seen this happen in asserts.)
  _.set_word_size)
  _reserved   _ ! NULL){
  _.set_endHeapWord*rs());
}

void CollectedHeap::post_initialize() {
  StringDedup:();
  initialize_serviceability
}java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0

#ifndef PRODUCT

java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  // Access to count is not atomic; the value does not have to be exact.
  if (  if (PromotionFailureALot =create_heap_summary(java.lang.StringIndexOutOfBoundsException: Range [60, 61) out of bounds for length 60
    const   gc_tracer->rep(, metaspace_summary;
const elapsed_gcs  - promotion_failure_alot_gc_number
tInterval) {

      if(+count > PromotionFailureALotCount
        countjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
        true
      }
    }
  }
  return;
}

::promotion_should_fail{
  return (&_);
}

voidifis_in>klass_or_null) java.lang.StringIndexOutOfBoundsException: Index 39 out of bounds for length 39
  if (PromotionFailureALot}
    _promotion_failure_alot_gc_number = total_collections();
    *count = 0;
  }
}

void CollectedHeaplast_whole_heap_examined_time_ns::(),
  reset_promotion_should_fail(&_promotion_failure_alot_count);
}

#endif  // #ifndef PRODUCT

bool CollectedHeap::supports_object_pinning() const {
  return false;
}

oop CollectedHeap::pin_object(JavaThread* thread, oop obj)
  ShouldNotReachHere/java.lang.StringIndexOutOfBoundsException: Index 61 out of bounds for length 61
   NULL
}

id ::unpin_object* thread ){
  ShouldNotReachHere
}

bool * Copyright (c) 2001, 2022, Oracle  DO NOTALTER ORREMOVEjava.lang.StringIndexOutOfBoundsException: Index 36 out of bounds for length 2
  return false;
}

// It's the caller's responsibility to ensure glitch-freedom
// (if required).
CollectedHeapupdate_capacity_and_used_at_gc * 2along with this; if , write  *Inc,5 Franklin, Fifth, Boston java.lang.StringIndexOutOfBoundsException: Index 2 out of bounds for length 2
capacity_at_last_gc()
_     used
}

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