hotspot/src/share/vm/memory/metaspaceShared.cpp
author rehn
Tue, 15 Mar 2016 14:41:07 +0100
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parent 37094 c12f414936a1
child 37179 4dbcb3a642d2
permissions -rw-r--r--
8150015: Integrate TraceTime with Unified Logging more seamlessly Reviewed-by: coleenp, dholmes
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/*
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 * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 *
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 * This code is free software; you can redistribute it and/or modify it
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 * under the terms of the GNU General Public License version 2 only, as
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 * published by the Free Software Foundation.
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 *
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 * This code is distributed in the hope that it will be useful, but WITHOUT
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
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 * version 2 for more details (a copy is included in the LICENSE file that
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 * accompanied this code).
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 *
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 * You should have received a copy of the GNU General Public License version
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 * 2 along with this work; if not, write to the Free Software Foundation,
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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 *
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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 * or visit www.oracle.com if you need additional information or have any
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 * questions.
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 *
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 */
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#include "precompiled.hpp"
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#include "classfile/classListParser.hpp"
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#include "classfile/classLoaderExt.hpp"
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#include "classfile/dictionary.hpp"
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#include "classfile/loaderConstraints.hpp"
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#include "classfile/placeholders.hpp"
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#include "classfile/sharedClassUtil.hpp"
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#include "classfile/symbolTable.hpp"
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#include "classfile/systemDictionary.hpp"
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#include "code/codeCache.hpp"
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#include "gc/shared/gcLocker.hpp"
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#include "interpreter/bytecodeStream.hpp"
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#include "interpreter/bytecodes.hpp"
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#include "memory/filemap.hpp"
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#include "memory/metaspace.hpp"
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#include "memory/metaspaceShared.hpp"
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#include "oops/objArrayOop.hpp"
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#include "oops/oop.inline.hpp"
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#include "runtime/timerTrace.hpp"
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#include "runtime/os.hpp"
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#include "runtime/signature.hpp"
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#include "runtime/vmThread.hpp"
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#include "runtime/vm_operations.hpp"
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#include "utilities/defaultStream.hpp"
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#include "utilities/hashtable.inline.hpp"
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int MetaspaceShared::_max_alignment = 0;
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ReservedSpace* MetaspaceShared::_shared_rs = NULL;
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MetaspaceSharedStats MetaspaceShared::_stats;
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bool MetaspaceShared::_link_classes_made_progress;
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bool MetaspaceShared::_check_classes_made_progress;
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bool MetaspaceShared::_has_error_classes;
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bool MetaspaceShared::_archive_loading_failed = false;
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SharedMiscRegion MetaspaceShared::_mc;
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SharedMiscRegion MetaspaceShared::_md;
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void SharedMiscRegion::initialize(ReservedSpace rs, size_t committed_byte_size,  SharedSpaceType space_type) {
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  _vs.initialize(rs, committed_byte_size);
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  _alloc_top = _vs.low();
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  _space_type = space_type;
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}
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// NOT thread-safe, but this is called during dump time in single-threaded mode.
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char* SharedMiscRegion::alloc(size_t num_bytes) {
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  assert(DumpSharedSpaces, "dump time only");
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  size_t alignment = sizeof(char*);
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  num_bytes = align_size_up(num_bytes, alignment);
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  _alloc_top = (char*)align_ptr_up(_alloc_top, alignment);
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  if (_alloc_top + num_bytes > _vs.high()) {
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    report_out_of_shared_space(_space_type);
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  }
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  char* p = _alloc_top;
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  _alloc_top += num_bytes;
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  memset(p, 0, num_bytes);
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  return p;
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}
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void MetaspaceShared::initialize_shared_rs(ReservedSpace* rs) {
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  assert(DumpSharedSpaces, "dump time only");
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  _shared_rs = rs;
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  // Split up and initialize the misc code and data spaces
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  size_t metadata_size = SharedReadOnlySize + SharedReadWriteSize;
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  ReservedSpace shared_ro_rw = _shared_rs->first_part(metadata_size);
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  ReservedSpace misc_section = _shared_rs->last_part(metadata_size);
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  // Now split into misc sections.
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  ReservedSpace md_rs   = misc_section.first_part(SharedMiscDataSize);
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  ReservedSpace mc_rs   = misc_section.last_part(SharedMiscDataSize);
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  _md.initialize(md_rs, SharedMiscDataSize, SharedMiscData);
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  _mc.initialize(mc_rs, SharedMiscCodeSize, SharedMiscData);
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}
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// Read/write a data stream for restoring/preserving metadata pointers and
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// miscellaneous data from/to the shared archive file.
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void MetaspaceShared::serialize(SerializeClosure* soc) {
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  int tag = 0;
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  soc->do_tag(--tag);
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  // Verify the sizes of various metadata in the system.
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  soc->do_tag(sizeof(Method));
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  soc->do_tag(sizeof(ConstMethod));
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  soc->do_tag(arrayOopDesc::base_offset_in_bytes(T_BYTE));
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  soc->do_tag(sizeof(ConstantPool));
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  soc->do_tag(sizeof(ConstantPoolCache));
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  soc->do_tag(objArrayOopDesc::base_offset_in_bytes());
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  soc->do_tag(typeArrayOopDesc::base_offset_in_bytes(T_BYTE));
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  soc->do_tag(sizeof(Symbol));
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  // Dump/restore miscellaneous metadata.
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  Universe::serialize(soc, true);
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  soc->do_tag(--tag);
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  // Dump/restore references to commonly used names and signatures.
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  vmSymbols::serialize(soc);
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  soc->do_tag(--tag);
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  soc->do_tag(666);
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}
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// CDS code for dumping shared archive.
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// Global object for holding classes that have been loaded.  Since this
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// is run at a safepoint just before exit, this is the entire set of classes.
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static GrowableArray<Klass*>* _global_klass_objects;
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static void collect_classes(Klass* k) {
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  _global_klass_objects->append_if_missing(k);
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  if (k->is_instance_klass()) {
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    // Add in the array classes too
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    InstanceKlass* ik = InstanceKlass::cast(k);
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    ik->array_klasses_do(collect_classes);
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  }
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}
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static void collect_classes2(Klass* k, ClassLoaderData* class_data) {
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  collect_classes(k);
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}
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static void remove_unshareable_in_classes() {
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  for (int i = 0; i < _global_klass_objects->length(); i++) {
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    Klass* k = _global_klass_objects->at(i);
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    k->remove_unshareable_info();
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  }
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}
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static void rewrite_nofast_bytecode(Method* method) {
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  RawBytecodeStream bcs(method);
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  while (!bcs.is_last_bytecode()) {
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    Bytecodes::Code opcode = bcs.raw_next();
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    switch (opcode) {
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    case Bytecodes::_getfield:      *bcs.bcp() = Bytecodes::_nofast_getfield;      break;
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    case Bytecodes::_putfield:      *bcs.bcp() = Bytecodes::_nofast_putfield;      break;
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    case Bytecodes::_aload_0:       *bcs.bcp() = Bytecodes::_nofast_aload_0;       break;
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    case Bytecodes::_iload:         *bcs.bcp() = Bytecodes::_nofast_iload;         break;
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    default: break;
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    }
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  }
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}
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// Walk all methods in the class list to ensure that they won't be modified at
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// run time. This includes:
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// [1] Rewrite all bytecodes as needed, so that the ConstMethod* will not be modified
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//     at run time by RewriteBytecodes/RewriteFrequentPairs
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// [2] Assign a fingerprint, so one doesn't need to be assigned at run-time.
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static void rewrite_nofast_bytecodes_and_calculate_fingerprints() {
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  for (int i = 0; i < _global_klass_objects->length(); i++) {
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    Klass* k = _global_klass_objects->at(i);
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    if (k->is_instance_klass()) {
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      InstanceKlass* ik = InstanceKlass::cast(k);
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      for (int i = 0; i < ik->methods()->length(); i++) {
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        Method* m = ik->methods()->at(i);
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        rewrite_nofast_bytecode(m);
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        Fingerprinter fp(m);
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        // The side effect of this call sets method's fingerprint field.
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        fp.fingerprint();
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      }
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    }
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  }
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}
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// Patch C++ vtable pointer in metadata.
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// Klass and other metadata objects contain references to c++ vtables in the
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// JVM library.
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// Fix them to point to our constructed vtables.  However, don't iterate
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// across the space while doing this, as that causes the vtables to be
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// patched, undoing our useful work.  Instead, iterate to make a list,
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// then use the list to do the fixing.
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//
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// Our constructed vtables:
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// Dump time:
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//  1. init_self_patching_vtbl_list: table of pointers to current virtual method addrs
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//  2. generate_vtable_methods: create jump table, appended to above vtbl_list
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//  3. patch_klass_vtables: for Klass list, patch the vtable entry in klass and
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//     associated metadata to point to jump table rather than to current vtbl
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// Table layout: NOTE FIXED SIZE
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//   1. vtbl pointers
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//   2. #Klass X #virtual methods per Klass
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//   1 entry for each, in the order:
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//   Klass1:method1 entry, Klass1:method2 entry, ... Klass1:method<num_virtuals> entry
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//   Klass2:method1 entry, Klass2:method2 entry, ... Klass2:method<num_virtuals> entry
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//   ...
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//   Klass<vtbl_list_size>:method1 entry, Klass<vtbl_list_size>:method2 entry,
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//       ... Klass<vtbl_list_size>:method<num_virtuals> entry
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//  Sample entry: (Sparc):
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//   save(sp, -256, sp)
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//   ba,pt common_code
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//   mov XXX, %L0       %L0 gets: Klass index <<8 + method index (note: max method index 255)
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//
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// Restore time:
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//   1. initialize_shared_space: reserve space for table
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//   2. init_self_patching_vtbl_list: update pointers to NEW virtual method addrs in text
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//
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// Execution time:
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//   First virtual method call for any object of these metadata types:
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//   1. object->klass
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//   2. vtable entry for that klass points to the jump table entries
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//   3. branches to common_code with %O0/klass, %L0: Klass index <<8 + method index
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//   4. common_code:
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//      Get address of new vtbl pointer for this Klass from updated table
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//      Update new vtbl pointer in the Klass: future virtual calls go direct
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//      Jump to method, using new vtbl pointer and method index
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static void* find_matching_vtbl_ptr(void** vtbl_list, void* new_vtable_start, void* obj) {
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  void* old_vtbl_ptr = *(void**)obj;
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  for (int i = 0; i < MetaspaceShared::vtbl_list_size; i++) {
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    if (vtbl_list[i] == old_vtbl_ptr) {
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      return (void**)new_vtable_start + i * MetaspaceShared::num_virtuals;
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    }
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  }
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  ShouldNotReachHere();
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  return NULL;
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}
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// Assumes the vtable is in first slot in object.
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static void patch_klass_vtables(void** vtbl_list, void* new_vtable_start) {
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  int n = _global_klass_objects->length();
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  for (int i = 0; i < n; i++) {
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    Klass* obj = _global_klass_objects->at(i);
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    // Note is_instance_klass() is a virtual call in debug.  After patching vtables
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    // all virtual calls on the dummy vtables will restore the original!
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    if (obj->is_instance_klass()) {
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      InstanceKlass* ik = InstanceKlass::cast(obj);
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      *(void**)ik = find_matching_vtbl_ptr(vtbl_list, new_vtable_start, ik);
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      ConstantPool* cp = ik->constants();
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      *(void**)cp = find_matching_vtbl_ptr(vtbl_list, new_vtable_start, cp);
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      for (int j = 0; j < ik->methods()->length(); j++) {
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        Method* m = ik->methods()->at(j);
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        *(void**)m = find_matching_vtbl_ptr(vtbl_list, new_vtable_start, m);
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      }
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    } else {
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      // Array klasses
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      Klass* k = obj;
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      *(void**)k = find_matching_vtbl_ptr(vtbl_list, new_vtable_start, k);
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    }
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  }
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}
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// Closure for serializing initialization data out to a data area to be
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// written to the shared file.
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class WriteClosure : public SerializeClosure {
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private:
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  intptr_t* top;
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  char* end;
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  inline void check_space() {
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    if ((char*)top + sizeof(intptr_t) > end) {
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      report_out_of_shared_space(SharedMiscData);
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    }
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  }
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public:
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  WriteClosure(char* md_top, char* md_end) {
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    top = (intptr_t*)md_top;
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    end = md_end;
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  }
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  char* get_top() { return (char*)top; }
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  void do_ptr(void** p) {
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    check_space();
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    *top = (intptr_t)*p;
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    ++top;
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  }
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  void do_tag(int tag) {
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    check_space();
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    *top = (intptr_t)tag;
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    ++top;
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  }
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  void do_region(u_char* start, size_t size) {
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    if ((char*)top + size > end) {
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      report_out_of_shared_space(SharedMiscData);
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    }
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    assert((intptr_t)start % sizeof(intptr_t) == 0, "bad alignment");
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    assert(size % sizeof(intptr_t) == 0, "bad size");
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    do_tag((int)size);
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    while (size > 0) {
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      *top = *(intptr_t*)start;
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      ++top;
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      start += sizeof(intptr_t);
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      size -= sizeof(intptr_t);
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    }
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  }
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  bool reading() const { return false; }
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};
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// This is for dumping detailed statistics for the allocations
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// in the shared spaces.
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class DumpAllocClosure : public Metaspace::AllocRecordClosure {
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public:
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  // Here's poor man's enum inheritance
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#define SHAREDSPACE_OBJ_TYPES_DO(f) \
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  METASPACE_OBJ_TYPES_DO(f) \
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  f(SymbolHashentry) \
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  f(SymbolBucket) \
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  f(Other)
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   334
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#define SHAREDSPACE_OBJ_TYPE_DECLARE(name) name ## Type,
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#define SHAREDSPACE_OBJ_TYPE_NAME_CASE(name) case name ## Type: return #name;
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  enum Type {
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    // Types are MetaspaceObj::ClassType, MetaspaceObj::SymbolType, etc
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    SHAREDSPACE_OBJ_TYPES_DO(SHAREDSPACE_OBJ_TYPE_DECLARE)
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    _number_of_types
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  };
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  static const char * type_name(Type type) {
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    switch(type) {
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    SHAREDSPACE_OBJ_TYPES_DO(SHAREDSPACE_OBJ_TYPE_NAME_CASE)
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    default:
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      ShouldNotReachHere();
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      return NULL;
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    }
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  }
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public:
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  enum {
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    RO = 0,
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    RW = 1
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  };
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  int _counts[2][_number_of_types];
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  int _bytes [2][_number_of_types];
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  int _which;
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   362
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  DumpAllocClosure() {
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    memset(_counts, 0, sizeof(_counts));
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    memset(_bytes,  0, sizeof(_bytes));
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  };
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   367
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  void iterate_metaspace(Metaspace* space, int which) {
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    assert(which == RO || which == RW, "sanity");
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    _which = which;
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    space->iterate(this);
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  }
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   373
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  virtual void doit(address ptr, MetaspaceObj::Type type, int byte_size) {
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    assert(int(type) >= 0 && type < MetaspaceObj::_number_of_types, "sanity");
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    _counts[_which][type] ++;
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    _bytes [_which][type] += byte_size;
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  }
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   379
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  void dump_stats(int ro_all, int rw_all, int md_all, int mc_all);
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};
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   382
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   383
void DumpAllocClosure::dump_stats(int ro_all, int rw_all, int md_all, int mc_all) {
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  rw_all += (md_all + mc_all); // md and mc are all mapped Read/Write
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   385
  int other_bytes = md_all + mc_all;
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   386
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   387
  // Calculate size of data that was not allocated by Metaspace::allocate()
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   388
  MetaspaceSharedStats *stats = MetaspaceShared::stats();
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   389
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   390
  // symbols
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   391
  _counts[RW][SymbolHashentryType] = stats->symbol.hashentry_count;
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  _bytes [RW][SymbolHashentryType] = stats->symbol.hashentry_bytes;
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   393
  other_bytes -= stats->symbol.hashentry_bytes;
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   394
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   395
  _counts[RW][SymbolBucketType] = stats->symbol.bucket_count;
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   396
  _bytes [RW][SymbolBucketType] = stats->symbol.bucket_bytes;
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   397
  other_bytes -= stats->symbol.bucket_bytes;
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   398
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   399
  // TODO: count things like dictionary, vtable, etc
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   400
  _bytes[RW][OtherType] =  other_bytes;
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   401
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   402
  // prevent divide-by-zero
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   403
  if (ro_all < 1) {
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   404
    ro_all = 1;
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   405
  }
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   406
  if (rw_all < 1) {
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   407
    rw_all = 1;
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   408
  }
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   409
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   410
  int all_ro_count = 0;
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   411
  int all_ro_bytes = 0;
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   412
  int all_rw_count = 0;
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   413
  int all_rw_bytes = 0;
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   414
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   415
// To make fmt_stats be a syntactic constant (for format warnings), use #define.
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   416
#define fmt_stats "%-20s: %8d %10d %5.1f | %8d %10d %5.1f | %8d %10d %5.1f"
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   417
  const char *sep = "--------------------+---------------------------+---------------------------+--------------------------";
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   418
  const char *hdr = "                        ro_cnt   ro_bytes     % |   rw_cnt   rw_bytes     % |  all_cnt  all_bytes     %";
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   419
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   420
  tty->print_cr("Detailed metadata info (rw includes md and mc):");
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   421
  tty->print_cr("%s", hdr);
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   422
  tty->print_cr("%s", sep);
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   423
  for (int type = 0; type < int(_number_of_types); type ++) {
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   424
    const char *name = type_name((Type)type);
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   425
    int ro_count = _counts[RO][type];
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   426
    int ro_bytes = _bytes [RO][type];
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   427
    int rw_count = _counts[RW][type];
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   428
    int rw_bytes = _bytes [RW][type];
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   429
    int count = ro_count + rw_count;
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   430
    int bytes = ro_bytes + rw_bytes;
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   431
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   432
    double ro_perc = 100.0 * double(ro_bytes) / double(ro_all);
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   433
    double rw_perc = 100.0 * double(rw_bytes) / double(rw_all);
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   434
    double perc    = 100.0 * double(bytes)    / double(ro_all + rw_all);
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   435
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   436
    tty->print_cr(fmt_stats, name,
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   437
                  ro_count, ro_bytes, ro_perc,
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   438
                  rw_count, rw_bytes, rw_perc,
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   439
                  count, bytes, perc);
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diff changeset
   440
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   441
    all_ro_count += ro_count;
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   442
    all_ro_bytes += ro_bytes;
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   443
    all_rw_count += rw_count;
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   444
    all_rw_bytes += rw_bytes;
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   445
  }
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   446
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   447
  int all_count = all_ro_count + all_rw_count;
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   448
  int all_bytes = all_ro_bytes + all_rw_bytes;
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   449
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   450
  double all_ro_perc = 100.0 * double(all_ro_bytes) / double(ro_all);
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   451
  double all_rw_perc = 100.0 * double(all_rw_bytes) / double(rw_all);
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   452
  double all_perc    = 100.0 * double(all_bytes)    / double(ro_all + rw_all);
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   453
24424
2658d7834c6e 8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents: 23540
diff changeset
   454
  tty->print_cr("%s", sep);
2658d7834c6e 8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents: 23540
diff changeset
   455
  tty->print_cr(fmt_stats, "Total",
17858
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   456
                all_ro_count, all_ro_bytes, all_ro_perc,
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   457
                all_rw_count, all_rw_bytes, all_rw_perc,
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   458
                all_count, all_bytes, all_perc);
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   459
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   460
  assert(all_ro_bytes == ro_all, "everything should have been counted");
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   461
  assert(all_rw_bytes == rw_all, "everything should have been counted");
24424
2658d7834c6e 8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents: 23540
diff changeset
   462
#undef fmt_stats
17858
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   463
}
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   464
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   465
// Populate the shared space.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   466
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   467
class VM_PopulateDumpSharedSpace: public VM_Operation {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   468
private:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   469
  ClassLoaderData* _loader_data;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   470
  GrowableArray<Klass*> *_class_promote_order;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   471
  VirtualSpace _md_vs;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   472
  VirtualSpace _mc_vs;
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   473
  CompactHashtableWriter* _string_cht;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   474
  GrowableArray<MemRegion> *_string_regions;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   475
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   476
public:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   477
  VM_PopulateDumpSharedSpace(ClassLoaderData* loader_data,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   478
                             GrowableArray<Klass*> *class_promote_order) :
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   479
    _loader_data(loader_data) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   480
    _class_promote_order = class_promote_order;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   481
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   482
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   483
  VMOp_Type type() const { return VMOp_PopulateDumpSharedSpace; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   484
  void doit();   // outline because gdb sucks
28363
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
   485
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
   486
private:
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
   487
  void handle_misc_data_space_failure(bool success) {
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
   488
    if (!success) {
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
   489
      report_out_of_shared_space(SharedMiscData);
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
   490
    }
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
   491
  }
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   492
}; // class VM_PopulateDumpSharedSpace
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   493
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   494
void VM_PopulateDumpSharedSpace::doit() {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   495
  Thread* THREAD = VMThread::vm_thread();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   496
  NOT_PRODUCT(SystemDictionary::verify();)
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   497
  // The following guarantee is meant to ensure that no loader constraints
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   498
  // exist yet, since the constraints table is not shared.  This becomes
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   499
  // more important now that we don't re-initialize vtables/itables for
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   500
  // shared classes at runtime, where constraints were previously created.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   501
  guarantee(SystemDictionary::constraints()->number_of_entries() == 0,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   502
            "loader constraints are not saved");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   503
  guarantee(SystemDictionary::placeholders()->number_of_entries() == 0,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   504
          "placeholders are not saved");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   505
  // Revisit and implement this if we prelink method handle call sites:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   506
  guarantee(SystemDictionary::invoke_method_table() == NULL ||
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   507
            SystemDictionary::invoke_method_table()->number_of_entries() == 0,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   508
            "invoke method table is not saved");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   509
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   510
  // At this point, many classes have been loaded.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   511
  // Gather systemDictionary classes in a global array and do everything to
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   512
  // that so we don't have to walk the SystemDictionary again.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   513
  _global_klass_objects = new GrowableArray<Klass*>(1000);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   514
  Universe::basic_type_classes_do(collect_classes);
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   515
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   516
  // Need to call SystemDictionary::classes_do(void f(Klass*, ClassLoaderData*))
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   517
  // as we may have some classes with NULL ClassLoaderData* in the dictionary. Other
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   518
  // variants of SystemDictionary::classes_do will skip those classes.
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   519
  SystemDictionary::classes_do(collect_classes2);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   520
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   521
  tty->print_cr("Number of classes %d", _global_klass_objects->length());
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   522
  {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   523
    int num_type_array = 0, num_obj_array = 0, num_inst = 0;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   524
    for (int i = 0; i < _global_klass_objects->length(); i++) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   525
      Klass* k = _global_klass_objects->at(i);
33611
9abd65805e19 8139203: Consistent naming for klass type predicates
coleenp
parents: 33602
diff changeset
   526
      if (k->is_instance_klass()) {
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   527
        num_inst ++;
33611
9abd65805e19 8139203: Consistent naming for klass type predicates
coleenp
parents: 33602
diff changeset
   528
      } else if (k->is_objArray_klass()) {
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   529
        num_obj_array ++;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   530
      } else {
33611
9abd65805e19 8139203: Consistent naming for klass type predicates
coleenp
parents: 33602
diff changeset
   531
        assert(k->is_typeArray_klass(), "sanity");
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   532
        num_type_array ++;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   533
      }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   534
    }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   535
    tty->print_cr("    instance classes   = %5d", num_inst);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   536
    tty->print_cr("    obj array classes  = %5d", num_obj_array);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   537
    tty->print_cr("    type array classes = %5d", num_type_array);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   538
  }
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   539
30117
cce2cdac56dc 8074345: Enable RewriteBytecodes when VM runs with CDS
minqi
parents: 28363
diff changeset
   540
cce2cdac56dc 8074345: Enable RewriteBytecodes when VM runs with CDS
minqi
parents: 28363
diff changeset
   541
  // Ensure the ConstMethods won't be modified at run-time
cce2cdac56dc 8074345: Enable RewriteBytecodes when VM runs with CDS
minqi
parents: 28363
diff changeset
   542
  tty->print("Updating ConstMethods ... ");
cce2cdac56dc 8074345: Enable RewriteBytecodes when VM runs with CDS
minqi
parents: 28363
diff changeset
   543
  rewrite_nofast_bytecodes_and_calculate_fingerprints();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   544
  tty->print_cr("done. ");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   545
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   546
  // Remove all references outside the metadata
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   547
  tty->print("Removing unshareable information ... ");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   548
  remove_unshareable_in_classes();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   549
  tty->print_cr("done. ");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   550
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   551
  // Set up the share data and shared code segments.
35231
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   552
  _md_vs = *MetaspaceShared::misc_data_region()->virtual_space();
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   553
  _mc_vs = *MetaspaceShared::misc_code_region()->virtual_space();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   554
  char* md_low = _md_vs.low();
35231
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   555
  char* md_top = MetaspaceShared::misc_data_region()->alloc_top();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   556
  char* md_end = _md_vs.high();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   557
  char* mc_low = _mc_vs.low();
35231
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   558
  char* mc_top = MetaspaceShared::misc_code_region()->alloc_top();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   559
  char* mc_end = _mc_vs.high();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   560
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   561
  // Reserve space for the list of Klass*s whose vtables are used
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   562
  // for patching others as needed.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   563
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   564
  void** vtbl_list = (void**)md_top;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   565
  int vtbl_list_size = MetaspaceShared::vtbl_list_size;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   566
  Universe::init_self_patching_vtbl_list(vtbl_list, vtbl_list_size);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   567
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   568
  md_top += vtbl_list_size * sizeof(void*);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   569
  void* vtable = md_top;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   570
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   571
  // Reserve space for a new dummy vtable for klass objects in the
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   572
  // heap.  Generate self-patching vtable entries.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   573
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   574
  MetaspaceShared::generate_vtable_methods(vtbl_list, &vtable,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   575
                                     &md_top, md_end,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   576
                                     &mc_top, mc_end);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   577
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   578
  // Reorder the system dictionary.  (Moving the symbols affects
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   579
  // how the hash table indices are calculated.)
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   580
  // Not doing this either.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   581
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   582
  SystemDictionary::reorder_dictionary();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   583
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   584
  NOT_PRODUCT(SystemDictionary::verify();)
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   585
33628
09241459a8b8 8141132: JEP 254: Compact Strings
thartmann
parents: 33148
diff changeset
   586
  // Copy the symbol table, string table, and the system dictionary to the shared
22551
9bf46d16dcc6 8025856: Fix typos in the GC code
jwilhelm
parents: 20059
diff changeset
   587
  // space in usable form.  Copy the hashtable
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   588
  // buckets first [read-write], then copy the linked lists of entries
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   589
  // [read-only].
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   590
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   591
  NOT_PRODUCT(SymbolTable::verify());
28363
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
   592
  handle_misc_data_space_failure(SymbolTable::copy_compact_table(&md_top, md_end));
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   593
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   594
  size_t ss_bytes = 0;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   595
  char* ss_low;
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   596
  // The string space has maximum two regions. See FileMapInfo::write_string_regions() for details.
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   597
  _string_regions = new GrowableArray<MemRegion>(2);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   598
  NOT_PRODUCT(StringTable::verify());
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   599
  handle_misc_data_space_failure(StringTable::copy_compact_table(&md_top, md_end, _string_regions,
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   600
                                                                 &ss_bytes));
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   601
  ss_low = _string_regions->is_empty() ? NULL : (char*)_string_regions->first().start();
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   602
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   603
  SystemDictionary::reverse();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   604
  SystemDictionary::copy_buckets(&md_top, md_end);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   605
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   606
  ClassLoader::verify();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   607
  ClassLoader::copy_package_info_buckets(&md_top, md_end);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   608
  ClassLoader::verify();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   609
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   610
  SystemDictionary::copy_table(&md_top, md_end);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   611
  ClassLoader::verify();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   612
  ClassLoader::copy_package_info_table(&md_top, md_end);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   613
  ClassLoader::verify();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   614
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   615
  // Write the other data to the output array.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   616
  WriteClosure wc(md_top, md_end);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   617
  MetaspaceShared::serialize(&wc);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   618
  md_top = wc.get_top();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   619
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   620
  // Print shared spaces all the time
24424
2658d7834c6e 8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents: 23540
diff changeset
   621
// To make fmt_space be a syntactic constant (for format warnings), use #define.
33148
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 31362
diff changeset
   622
#define fmt_space "%s space: " SIZE_FORMAT_W(9) " [ %4.1f%% of total] out of " SIZE_FORMAT_W(9) " bytes [%4.1f%% used] at " INTPTR_FORMAT
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   623
  Metaspace* ro_space = _loader_data->ro_metaspace();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   624
  Metaspace* rw_space = _loader_data->rw_metaspace();
15197
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   625
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   626
  // Allocated size of each space (may not be all occupied)
17109
90e6c31bbbe4 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 15197
diff changeset
   627
  const size_t ro_alloced = ro_space->capacity_bytes_slow(Metaspace::NonClassType);
90e6c31bbbe4 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 15197
diff changeset
   628
  const size_t rw_alloced = rw_space->capacity_bytes_slow(Metaspace::NonClassType);
15197
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   629
  const size_t md_alloced = md_end-md_low;
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   630
  const size_t mc_alloced = mc_end-mc_low;
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   631
  const size_t total_alloced = ro_alloced + rw_alloced + md_alloced + mc_alloced
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   632
                             + ss_bytes;
15197
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   633
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   634
  // Occupied size of each space.
17109
90e6c31bbbe4 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 15197
diff changeset
   635
  const size_t ro_bytes = ro_space->used_bytes_slow(Metaspace::NonClassType);
90e6c31bbbe4 8008966: NPG: Inefficient Metaspace counter functions cause large young GC regressions
jmasa
parents: 15197
diff changeset
   636
  const size_t rw_bytes = rw_space->used_bytes_slow(Metaspace::NonClassType);
15197
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   637
  const size_t md_bytes = size_t(md_top - md_low);
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   638
  const size_t mc_bytes = size_t(mc_top - mc_low);
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   639
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   640
  // Percent of total size
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   641
  const size_t total_bytes = ro_bytes + rw_bytes + md_bytes + mc_bytes + ss_bytes;
15197
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   642
  const double ro_t_perc = ro_bytes / double(total_bytes) * 100.0;
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   643
  const double rw_t_perc = rw_bytes / double(total_bytes) * 100.0;
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   644
  const double md_t_perc = md_bytes / double(total_bytes) * 100.0;
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   645
  const double mc_t_perc = mc_bytes / double(total_bytes) * 100.0;
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   646
  const double ss_t_perc = ss_bytes / double(total_bytes) * 100.0;
15197
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   647
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   648
  // Percent of fullness of each space
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   649
  const double ro_u_perc = ro_bytes / double(ro_alloced) * 100.0;
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   650
  const double rw_u_perc = rw_bytes / double(rw_alloced) * 100.0;
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   651
  const double md_u_perc = md_bytes / double(md_alloced) * 100.0;
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   652
  const double mc_u_perc = mc_bytes / double(mc_alloced) * 100.0;
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   653
  const double total_u_perc = total_bytes / double(total_alloced) * 100.0;
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   654
33148
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 31362
diff changeset
   655
  tty->print_cr(fmt_space, "ro", ro_bytes, ro_t_perc, ro_alloced, ro_u_perc, p2i(ro_space->bottom()));
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 31362
diff changeset
   656
  tty->print_cr(fmt_space, "rw", rw_bytes, rw_t_perc, rw_alloced, rw_u_perc, p2i(rw_space->bottom()));
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 31362
diff changeset
   657
  tty->print_cr(fmt_space, "md", md_bytes, md_t_perc, md_alloced, md_u_perc, p2i(md_low));
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 31362
diff changeset
   658
  tty->print_cr(fmt_space, "mc", mc_bytes, mc_t_perc, mc_alloced, mc_u_perc, p2i(mc_low));
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 31362
diff changeset
   659
  tty->print_cr(fmt_space, "st", ss_bytes, ss_t_perc, ss_bytes,   100.0,     p2i(ss_low));
68fa8b6c4340 8042893: compiler: PRAGMA_FORMAT_MUTE_WARNINGS_FOR_GCC needs to be removed from source files
david
parents: 31362
diff changeset
   660
  tty->print_cr("total   : " SIZE_FORMAT_W(9) " [100.0%% of total] out of " SIZE_FORMAT_W(9) " bytes [%4.1f%% used]",
15197
cef3fb881307 8005467: CDS size information is incorrect and unfriendly
coleenp
parents: 15100
diff changeset
   661
                 total_bytes, total_alloced, total_u_perc);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   662
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   663
  // Update the vtable pointers in all of the Klass objects in the
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   664
  // heap. They should point to newly generated vtable.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   665
  patch_klass_vtables(vtbl_list, vtable);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   666
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   667
  // dunno what this is for.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   668
  char* saved_vtbl = (char*)os::malloc(vtbl_list_size * sizeof(void*), mtClass);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   669
  memmove(saved_vtbl, vtbl_list, vtbl_list_size * sizeof(void*));
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   670
  memset(vtbl_list, 0, vtbl_list_size * sizeof(void*));
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   671
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   672
  // Create and write the archive file that maps the shared spaces.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   673
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   674
  FileMapInfo* mapinfo = new FileMapInfo();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   675
  mapinfo->populate_header(MetaspaceShared::max_alignment());
35231
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   676
  mapinfo->set_misc_data_patching_start((char*)vtbl_list);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   677
35231
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   678
  for (int pass=1; pass<=2; pass++) {
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   679
    if (pass == 1) {
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   680
      // The first pass doesn't actually write the data to disk. All it
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   681
      // does is to update the fields in the mapinfo->_header.
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   682
    } else {
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   683
      // After the first pass, the contents of mapinfo->_header are finalized,
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   684
      // so we can compute the header's CRC, and write the contents of the header
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   685
      // and the regions into disk.
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   686
      mapinfo->open_for_write();
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   687
      mapinfo->set_header_crc(mapinfo->compute_header_crc());
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   688
    }
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   689
    mapinfo->write_header();
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   690
    mapinfo->write_space(MetaspaceShared::ro, _loader_data->ro_metaspace(), true);
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   691
    mapinfo->write_space(MetaspaceShared::rw, _loader_data->rw_metaspace(), false);
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   692
    mapinfo->write_region(MetaspaceShared::md, _md_vs.low(),
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   693
                          pointer_delta(md_top, _md_vs.low(), sizeof(char)),
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   694
                          SharedMiscDataSize,
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   695
                          false, false);
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   696
    mapinfo->write_region(MetaspaceShared::mc, _mc_vs.low(),
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   697
                          pointer_delta(mc_top, _mc_vs.low(), sizeof(char)),
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   698
                          SharedMiscCodeSize,
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   699
                          true, true);
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   700
    mapinfo->write_string_regions(_string_regions);
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
   701
  }
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   702
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   703
  mapinfo->close();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   704
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   705
  memmove(vtbl_list, saved_vtbl, vtbl_list_size * sizeof(void*));
30753
75e795c4d14f 8075288: malloc without free in VM_PopulateDumpSharedSpace::doit()
dholmes
parents: 30120
diff changeset
   706
  os::free(saved_vtbl);
17858
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   707
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   708
  if (PrintSharedSpaces) {
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   709
    DumpAllocClosure dac;
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   710
    dac.iterate_metaspace(_loader_data->ro_metaspace(), DumpAllocClosure::RO);
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   711
    dac.iterate_metaspace(_loader_data->rw_metaspace(), DumpAllocClosure::RW);
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   712
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   713
    dac.dump_stats(int(ro_bytes), int(rw_bytes), int(md_bytes), int(mc_bytes));
c292f8791cca 8014912: Restore PrintSharedSpaces functionality after NPG
iklam
parents: 17109
diff changeset
   714
  }
24424
2658d7834c6e 8037816: Fix for 8036122 breaks build with Xcode5/clang
drchase
parents: 23540
diff changeset
   715
#undef fmt_space
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   716
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   717
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   718
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   719
void MetaspaceShared::link_one_shared_class(Klass* obj, TRAPS) {
14488
ab48109f7d1b 8001471: Klass::cast() does nothing
hseigel
parents: 14120
diff changeset
   720
  Klass* k = obj;
33611
9abd65805e19 8139203: Consistent naming for klass type predicates
coleenp
parents: 33602
diff changeset
   721
  if (k->is_instance_klass()) {
33602
16053580a684 8139163: InstanceKlass::cast passes through NULL
coleenp
parents: 33148
diff changeset
   722
    InstanceKlass* ik = InstanceKlass::cast(k);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   723
    // Link the class to cause the bytecodes to be rewritten and the
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   724
    // cpcache to be created. Class verification is done according
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   725
    // to -Xverify setting.
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   726
    _link_classes_made_progress |= try_link_class(ik, THREAD);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   727
    guarantee(!HAS_PENDING_EXCEPTION, "exception in link_class");
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   728
  }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   729
}
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   730
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   731
void MetaspaceShared::check_one_shared_class(Klass* k) {
33611
9abd65805e19 8139203: Consistent naming for klass type predicates
coleenp
parents: 33602
diff changeset
   732
  if (k->is_instance_klass() && InstanceKlass::cast(k)->check_sharing_error_state()) {
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   733
    _check_classes_made_progress = true;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   734
  }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   735
}
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   736
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   737
void MetaspaceShared::link_and_cleanup_shared_classes(TRAPS) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   738
  // We need to iterate because verification may cause additional classes
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   739
  // to be loaded.
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   740
  do {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   741
    _link_classes_made_progress = false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   742
    SystemDictionary::classes_do(link_one_shared_class, THREAD);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   743
    guarantee(!HAS_PENDING_EXCEPTION, "exception in link_class");
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   744
  } while (_link_classes_made_progress);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   745
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   746
  if (_has_error_classes) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   747
    // Mark all classes whose super class or interfaces failed verification.
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   748
    do {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   749
      // Not completely sure if we need to do this iteratively. Anyway,
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   750
      // we should come here only if there are unverifiable classes, which
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   751
      // shouldn't happen in normal cases. So better safe than sorry.
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   752
      _check_classes_made_progress = false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   753
      SystemDictionary::classes_do(check_one_shared_class);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   754
    } while (_check_classes_made_progress);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   755
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   756
    if (IgnoreUnverifiableClassesDuringDump) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   757
      // This is useful when running JCK or SQE tests. You should not
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   758
      // enable this when running real apps.
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   759
      SystemDictionary::remove_classes_in_error_state();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   760
    } else {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   761
      tty->print_cr("Please remove the unverifiable classes from your class list and try again");
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   762
      exit(1);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   763
    }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   764
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   765
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   766
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   767
void MetaspaceShared::prepare_for_dumping() {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   768
  ClassLoader::initialize_shared_path();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   769
  FileMapInfo::allocate_classpath_entry_table();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   770
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   771
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   772
// Preload classes from a list, populate the shared spaces and dump to a
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   773
// file.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   774
void MetaspaceShared::preload_and_dump(TRAPS) {
37161
e881f320966e 8150015: Integrate TraceTime with Unified Logging more seamlessly
rehn
parents: 37094
diff changeset
   775
  { TraceTime timer("Dump Shared Spaces", TRACETIME_LOG(Info, startuptime));
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   776
    ResourceMark rm;
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   777
    char class_list_path_str[JVM_MAXPATHLEN];
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   778
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   779
    tty->print_cr("Allocated shared space: " SIZE_FORMAT " bytes at " PTR_FORMAT,
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   780
                  MetaspaceShared::shared_rs()->size(),
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   781
                  p2i(MetaspaceShared::shared_rs()->base()));
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   782
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   783
    // Preload classes to be shared.
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   784
    // Should use some os:: method rather than fopen() here. aB.
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   785
    const char* class_list_path;
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   786
    if (SharedClassListFile == NULL) {
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   787
      // Construct the path to the class list (in jre/lib)
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   788
      // Walk up two directories from the location of the VM and
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   789
      // optionally tack on "lib" (depending on platform)
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   790
      os::jvm_path(class_list_path_str, sizeof(class_list_path_str));
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   791
      for (int i = 0; i < 3; i++) {
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   792
        char *end = strrchr(class_list_path_str, *os::file_separator());
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   793
        if (end != NULL) *end = '\0';
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   794
      }
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   795
      int class_list_path_len = (int)strlen(class_list_path_str);
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   796
      if (class_list_path_len >= 3) {
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   797
        if (strcmp(class_list_path_str + class_list_path_len - 3, "lib") != 0) {
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   798
          if (class_list_path_len < JVM_MAXPATHLEN - 4) {
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   799
            jio_snprintf(class_list_path_str + class_list_path_len,
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   800
                         sizeof(class_list_path_str) - class_list_path_len,
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   801
                         "%slib", os::file_separator());
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   802
            class_list_path_len += 4;
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   803
          }
27471
6e56277909f1 8062370: Various minor code improvements
goetz
parents: 27025
diff changeset
   804
        }
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   805
      }
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   806
      if (class_list_path_len < JVM_MAXPATHLEN - 10) {
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   807
        jio_snprintf(class_list_path_str + class_list_path_len,
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   808
                     sizeof(class_list_path_str) - class_list_path_len,
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   809
                     "%sclasslist", os::file_separator());
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   810
      }
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   811
      class_list_path = class_list_path_str;
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   812
    } else {
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   813
      class_list_path = SharedClassListFile;
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   814
    }
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   815
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   816
    int class_count = 0;
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   817
    GrowableArray<Klass*>* class_promote_order = new GrowableArray<Klass*>();
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   818
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   819
    // sun.io.Converters
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   820
    static const char obj_array_sig[] = "[[Ljava/lang/Object;";
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   821
    SymbolTable::new_permanent_symbol(obj_array_sig, THREAD);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   822
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   823
    // java.util.HashMap
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   824
    static const char map_entry_array_sig[] = "[Ljava/util/Map$Entry;";
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   825
    SymbolTable::new_permanent_symbol(map_entry_array_sig, THREAD);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   826
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   827
    // Need to allocate the op here:
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   828
    // op.misc_data_space_alloc() will be called during preload_and_dump().
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   829
    ClassLoaderData* loader_data = ClassLoaderData::the_null_class_loader_data();
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   830
    VM_PopulateDumpSharedSpace op(loader_data, class_promote_order);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   831
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   832
    tty->print_cr("Loading classes to share ...");
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   833
    _has_error_classes = false;
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   834
    class_count += preload_and_dump(class_list_path, class_promote_order,
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   835
                                    THREAD);
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   836
    if (ExtraSharedClassListFile) {
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   837
      class_count += preload_and_dump(ExtraSharedClassListFile, class_promote_order,
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   838
                                      THREAD);
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   839
    }
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   840
    tty->print_cr("Loading classes to share: done.");
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   841
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   842
    if (PrintSharedSpaces) {
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   843
      tty->print_cr("Shared spaces: preloaded %d classes", class_count);
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   844
    }
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   845
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   846
    // Rewrite and link classes
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   847
    tty->print_cr("Rewriting and linking classes ...");
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   848
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   849
    // Link any classes which got missed. This would happen if we have loaded classes that
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   850
    // were not explicitly specified in the classlist. E.g., if an interface implemented by class K
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   851
    // fails verification, all other interfaces that were not specified in the classlist but
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   852
    // are implemented by K are not verified.
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   853
    link_and_cleanup_shared_classes(CATCH);
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   854
    tty->print_cr("Rewriting and linking classes: done");
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   855
36178
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   856
    VMThread::execute(&op);
9739f8c767da 8148630: Convert TraceStartupTime to Unified Logging
rprotacio
parents: 35231
diff changeset
   857
  }
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   858
  // Since various initialization steps have been undone by this process,
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   859
  // it is not reasonable to continue running a java process.
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   860
  exit(0);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   861
}
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   862
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   863
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   864
int MetaspaceShared::preload_and_dump(const char* class_list_path,
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   865
                                      GrowableArray<Klass*>* class_promote_order,
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   866
                                      TRAPS) {
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   867
  ClassListParser parser(class_list_path);
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   868
  int class_count = 0;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   869
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   870
    while (parser.parse_one_line()) {
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   871
      Klass* klass = ClassLoaderExt::load_one_class(&parser, THREAD);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   872
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   873
      CLEAR_PENDING_EXCEPTION;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   874
      if (klass != NULL) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   875
        if (PrintSharedSpaces && Verbose && WizardMode) {
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   876
          ResourceMark rm;
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
   877
          tty->print_cr("Shared spaces preloaded: %s", klass->external_name());
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   878
        }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   879
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   880
        InstanceKlass* ik = InstanceKlass::cast(klass);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   881
37094
c12f414936a1 8149995: TraceClassLoadingPreorder has been converted to Unified Logging.
mockner
parents: 36178
diff changeset
   882
        // Should be class load order as per -Xlog:classload+preorder
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   883
        class_promote_order->append(ik);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   884
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   885
        // Link the class to cause the bytecodes to be rewritten and the
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   886
        // cpcache to be created. The linking is done as soon as classes
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   887
        // are loaded in order that the related data structures (klass and
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   888
        // cpCache) are located together.
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   889
        try_link_class(ik, THREAD);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   890
        guarantee(!HAS_PENDING_EXCEPTION, "exception in link_class");
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   891
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   892
        class_count++;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   893
      }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   894
    }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   895
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   896
  return class_count;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   897
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   898
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   899
// Returns true if the class's status has changed
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   900
bool MetaspaceShared::try_link_class(InstanceKlass* ik, TRAPS) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   901
  assert(DumpSharedSpaces, "should only be called during dumping");
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   902
  if (ik->init_state() < InstanceKlass::linked) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   903
    bool saved = BytecodeVerificationLocal;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   904
    if (!SharedClassUtil::is_shared_boot_class(ik)) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   905
      // The verification decision is based on BytecodeVerificationRemote
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   906
      // for non-system classes. Since we are using the NULL classloader
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   907
      // to load non-system classes during dumping, we need to temporarily
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   908
      // change BytecodeVerificationLocal to be the same as
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   909
      // BytecodeVerificationRemote. Note this can cause the parent system
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   910
      // classes also being verified. The extra overhead is acceptable during
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   911
      // dumping.
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   912
      BytecodeVerificationLocal = BytecodeVerificationRemote;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   913
    }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   914
    ik->link_class(THREAD);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   915
    if (HAS_PENDING_EXCEPTION) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   916
      ResourceMark rm;
27618
790a8bf5488b 8064375: Change certain errors to warnings in CDS output.
jiangli
parents: 27025
diff changeset
   917
      tty->print_cr("Preload Warning: Verification failed for %s",
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   918
                    ik->external_name());
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   919
      CLEAR_PENDING_EXCEPTION;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   920
      ik->set_in_error_state();
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   921
      _has_error_classes = true;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   922
    }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   923
    BytecodeVerificationLocal = saved;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   924
    return true;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   925
  } else {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   926
    return false;
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   927
  }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
   928
}
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   929
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   930
// Closure for serializing initialization data in from a data area
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   931
// (ptr_array) read from the shared file.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   932
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   933
class ReadClosure : public SerializeClosure {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   934
private:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   935
  intptr_t** _ptr_array;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   936
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   937
  inline intptr_t nextPtr() {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   938
    return *(*_ptr_array)++;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   939
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   940
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   941
public:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   942
  ReadClosure(intptr_t** ptr_array) { _ptr_array = ptr_array; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   943
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   944
  void do_ptr(void** p) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   945
    assert(*p == NULL, "initializing previous initialized pointer.");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   946
    intptr_t obj = nextPtr();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   947
    assert((intptr_t)obj >= 0 || (intptr_t)obj < -100,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   948
           "hit tag while initializing ptrs.");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   949
    *p = (void*)obj;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   950
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   951
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   952
  void do_tag(int tag) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   953
    int old_tag;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   954
    old_tag = (int)(intptr_t)nextPtr();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   955
    // do_int(&old_tag);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   956
    assert(tag == old_tag, "old tag doesn't match");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   957
    FileMapInfo::assert_mark(tag == old_tag);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   958
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   959
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   960
  void do_region(u_char* start, size_t size) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   961
    assert((intptr_t)start % sizeof(intptr_t) == 0, "bad alignment");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   962
    assert(size % sizeof(intptr_t) == 0, "bad size");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   963
    do_tag((int)size);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   964
    while (size > 0) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   965
      *(intptr_t*)start = nextPtr();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   966
      start += sizeof(intptr_t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   967
      size -= sizeof(intptr_t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   968
    }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   969
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   970
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   971
  bool reading() const { return true; }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   972
};
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   973
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   974
// Return true if given address is in the mapped shared space.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   975
bool MetaspaceShared::is_in_shared_space(const void* p) {
18483
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17858
diff changeset
   976
  return UseSharedSpaces && FileMapInfo::current_info()->is_in_shared_space(p);
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   977
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   978
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   979
bool MetaspaceShared::is_string_region(int idx) {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   980
  return (idx >= MetaspaceShared::first_string &&
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   981
          idx < MetaspaceShared::first_string + MetaspaceShared::max_strings);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   982
}
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
   983
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   984
void MetaspaceShared::print_shared_spaces() {
18483
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17858
diff changeset
   985
  if (UseSharedSpaces) {
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17858
diff changeset
   986
    FileMapInfo::current_info()->print_shared_spaces();
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17858
diff changeset
   987
  }
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   988
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   989
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   990
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   991
// Map shared spaces at requested addresses and return if succeeded.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   992
// Need to keep the bounds of the ro and rw space for the Metaspace::contains
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   993
// call, or is_in_shared_space.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   994
bool MetaspaceShared::map_shared_spaces(FileMapInfo* mapinfo) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   995
  size_t image_alignment = mapinfo->alignment();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
   996
15100
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14488
diff changeset
   997
#ifndef _WINDOWS
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14488
diff changeset
   998
  // Map in the shared memory and then map the regions on top of it.
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14488
diff changeset
   999
  // On Windows, don't map the memory here because it will cause the
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14488
diff changeset
  1000
  // mappings of the regions to fail.
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1001
  ReservedSpace shared_rs = mapinfo->reserve_shared_memory();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1002
  if (!shared_rs.is_reserved()) return false;
15100
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14488
diff changeset
  1003
#endif
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14488
diff changeset
  1004
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14488
diff changeset
  1005
  assert(!DumpSharedSpaces, "Should not be called with DumpSharedSpaces");
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1006
18483
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17858
diff changeset
  1007
  char* _ro_base = NULL;
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17858
diff changeset
  1008
  char* _rw_base = NULL;
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17858
diff changeset
  1009
  char* _md_base = NULL;
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17858
diff changeset
  1010
  char* _mc_base = NULL;
c021907fa0a7 8016075: Win32 crash with CDS enabled and small heap size
iklam
parents: 17858
diff changeset
  1011
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1012
  // Map each shared region
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1013
  if ((_ro_base = mapinfo->map_region(ro)) != NULL &&
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1014
      mapinfo->verify_region_checksum(ro) &&
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1015
      (_rw_base = mapinfo->map_region(rw)) != NULL &&
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1016
      mapinfo->verify_region_checksum(rw) &&
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1017
      (_md_base = mapinfo->map_region(md)) != NULL &&
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1018
      mapinfo->verify_region_checksum(md) &&
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1019
      (_mc_base = mapinfo->map_region(mc)) != NULL &&
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1020
      mapinfo->verify_region_checksum(mc) &&
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1021
      (image_alignment == (size_t)max_alignment()) &&
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1022
      mapinfo->validate_classpath_entry_table()) {
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1023
    // Success (no need to do anything)
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1024
    return true;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1025
  } else {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1026
    // If there was a failure in mapping any of the spaces, unmap the ones
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1027
    // that succeeded
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1028
    if (_ro_base != NULL) mapinfo->unmap_region(ro);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1029
    if (_rw_base != NULL) mapinfo->unmap_region(rw);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1030
    if (_md_base != NULL) mapinfo->unmap_region(md);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1031
    if (_mc_base != NULL) mapinfo->unmap_region(mc);
15100
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14488
diff changeset
  1032
#ifndef _WINDOWS
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1033
    // Release the entire mapped region
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1034
    shared_rs.release();
15100
0ae85ac7c8b0 8003705: CDS failed on Windows: can not map in the CDS.
hseigel
parents: 14488
diff changeset
  1035
#endif
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1036
    // If -Xshare:on is specified, print out the error message and exit VM,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1037
    // otherwise, set UseSharedSpaces to false and continue.
28017
84009002b566 8066670: PrintSharedArchiveAndExit does not exit the VM when the archive is invalid
iklam
parents: 27619
diff changeset
  1038
    if (RequireSharedSpaces || PrintSharedArchiveAndExit) {
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1039
      vm_exit_during_initialization("Unable to use shared archive.", "Failed map_region for using -Xshare:on.");
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1040
    } else {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1041
      FLAG_SET_DEFAULT(UseSharedSpaces, false);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1042
    }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1043
    return false;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1044
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1045
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1046
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1047
// Read the miscellaneous data from the shared file, and
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1048
// serialize it out to its various destinations.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1049
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1050
void MetaspaceShared::initialize_shared_spaces() {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1051
  FileMapInfo *mapinfo = FileMapInfo::current_info();
35231
e89989198037 8145593: Clean up metaspaceShared.cpp
iklam
parents: 34257
diff changeset
  1052
  char* buffer = mapinfo->misc_data_patching_start();
34257
4be3504cc03b 8140802: Clean up and refactor of class loading code for CDS
iklam
parents: 33638
diff changeset
  1053
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1054
  // Skip over (reserve space for) a list of addresses of C++ vtables
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1055
  // for Klass objects.  They get filled in later.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1056
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1057
  void** vtbl_list = (void**)buffer;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1058
  buffer += MetaspaceShared::vtbl_list_size * sizeof(void*);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1059
  Universe::init_self_patching_vtbl_list(vtbl_list, vtbl_list_size);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1060
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1061
  // Skip over (reserve space for) dummy C++ vtables Klass objects.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1062
  // They are used as is.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1063
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1064
  intptr_t vtable_size = *(intptr_t*)buffer;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1065
  buffer += sizeof(intptr_t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1066
  buffer += vtable_size;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1067
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1068
  // Create the shared symbol table using the compact table at this spot in the
28363
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
  1069
  // misc data space. (Todo: move this to read-only space. Currently
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
  1070
  // this is mapped copy-on-write but will never be written into).
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1071
28363
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
  1072
  buffer = (char*)SymbolTable::init_shared_table(buffer);
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
  1073
  SymbolTable::create_table();
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1074
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1075
  // Create the shared string table using the compact table
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1076
  buffer = (char*)StringTable::init_shared_table(mapinfo, buffer);
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1077
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1078
  // Create the shared dictionary using the bucket array at this spot in
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1079
  // the misc data space.  Since the shared dictionary table is never
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1080
  // modified, this region (of mapped pages) will be (effectively, if
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1081
  // not explicitly) read-only.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1082
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1083
  int sharedDictionaryLen = *(intptr_t*)buffer;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1084
  buffer += sizeof(intptr_t);
28363
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
  1085
  int number_of_entries = *(intptr_t*)buffer;
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1086
  buffer += sizeof(intptr_t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1087
  SystemDictionary::set_shared_dictionary((HashtableBucket<mtClass>*)buffer,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1088
                                          sharedDictionaryLen,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1089
                                          number_of_entries);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1090
  buffer += sharedDictionaryLen;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1091
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1092
  // Create the package info table using the bucket array at this spot in
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1093
  // the misc data space.  Since the package info table is never
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1094
  // modified, this region (of mapped pages) will be (effectively, if
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1095
  // not explicitly) read-only.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1096
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1097
  int pkgInfoLen = *(intptr_t*)buffer;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1098
  buffer += sizeof(intptr_t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1099
  number_of_entries = *(intptr_t*)buffer;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1100
  buffer += sizeof(intptr_t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1101
  ClassLoader::create_package_info_table((HashtableBucket<mtClass>*)buffer, pkgInfoLen,
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1102
                                         number_of_entries);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1103
  buffer += pkgInfoLen;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1104
  ClassLoader::verify();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1105
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1106
  // The following data in the shared misc data region are the linked
28363
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
  1107
  // list elements (HashtableEntry objects) for the shared dictionary
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
  1108
  // and package info table.
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1109
28363
047115468f16 8059510: Compact symbol table layout inside shared archive.
jiangli
parents: 28017
diff changeset
  1110
  int len = *(intptr_t*)buffer;     // skip over shared dictionary entries
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1111
  buffer += sizeof(intptr_t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1112
  buffer += len;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1113
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1114
  len = *(intptr_t*)buffer;     // skip over package info table entries
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1115
  buffer += sizeof(intptr_t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1116
  buffer += len;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1117
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1118
  len = *(intptr_t*)buffer;     // skip over package info table char[] arrays.
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1119
  buffer += sizeof(intptr_t);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1120
  buffer += len;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1121
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1122
  intptr_t* array = (intptr_t*)buffer;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1123
  ReadClosure rc(&array);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1124
  serialize(&rc);
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1125
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1126
  // Close the mapinfo file
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1127
  mapinfo->close();
26135
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1128
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1129
  if (PrintSharedArchiveAndExit) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1130
    if (PrintSharedDictionary) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1131
      tty->print_cr("\nShared classes:\n");
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1132
      SystemDictionary::print_shared(false);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1133
    }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1134
    if (_archive_loading_failed) {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1135
      tty->print_cr("archive is invalid");
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1136
      vm_exit(1);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1137
    } else {
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1138
      tty->print_cr("archive is valid");
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1139
      vm_exit(0);
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1140
    }
82b516c550f7 8046070: Class Data Sharing clean up and refactoring
iklam
parents: 25468
diff changeset
  1141
  }
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1142
}
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1143
31345
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1144
void MetaspaceShared::fixup_shared_string_regions() {
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1145
  FileMapInfo *mapinfo = FileMapInfo::current_info();
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1146
  mapinfo->fixup_string_regions();
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1147
}
1bba15125d8d 8015086: add interned strings to the shared archive.
jiangli
parents: 30773
diff changeset
  1148
13728
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1149
// JVM/TI RedefineClasses() support:
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1150
bool MetaspaceShared::remap_shared_readonly_as_readwrite() {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1151
  assert(SafepointSynchronize::is_at_safepoint(), "must be at safepoint");
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1152
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1153
  if (UseSharedSpaces) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1154
    // remap the shared readonly space to shared readwrite, private
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1155
    FileMapInfo* mapinfo = FileMapInfo::current_info();
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1156
    if (!mapinfo->remap_shared_readonly_as_readwrite()) {
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1157
      return false;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1158
    }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1159
  }
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1160
  return true;
882756847a04 6964458: Reimplement class meta-data storage to use native memory
coleenp
parents:
diff changeset
  1161
}
26304
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1162
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1163
int MetaspaceShared::count_class(const char* classlist_file) {
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1164
  if (classlist_file == NULL) {
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1165
    return 0;
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1166
  }
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1167
  char class_name[256];
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1168
  int class_count = 0;
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1169
  FILE* file = fopen(classlist_file, "r");
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1170
  if (file != NULL) {
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1171
    while ((fgets(class_name, sizeof class_name, file)) != NULL) {
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1172
      if (*class_name == '#') { // comment
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1173
        continue;
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1174
      }
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1175
      class_count++;
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1176
    }
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1177
    fclose(file);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1178
  } else {
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1179
    char errmsg[JVM_MAXPATHLEN];
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1180
    os::lasterror(errmsg, JVM_MAXPATHLEN);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1181
    tty->print_cr("Loading classlist failed: %s", errmsg);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1182
    exit(1);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1183
  }
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1184
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1185
  return class_count;
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1186
}
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1187
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1188
// the sizes are good for typical large applications that have a lot of shared
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1189
// classes
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1190
void MetaspaceShared::estimate_regions_size() {
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1191
  int class_count = count_class(SharedClassListFile);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1192
  class_count += count_class(ExtraSharedClassListFile);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1193
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1194
  if (class_count > LargeThresholdClassCount) {
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1195
    if (class_count < HugeThresholdClassCount) {
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1196
      SET_ESTIMATED_SIZE(Large, ReadOnly);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1197
      SET_ESTIMATED_SIZE(Large, ReadWrite);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1198
      SET_ESTIMATED_SIZE(Large, MiscData);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1199
      SET_ESTIMATED_SIZE(Large, MiscCode);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1200
    } else {
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1201
      SET_ESTIMATED_SIZE(Huge,  ReadOnly);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1202
      SET_ESTIMATED_SIZE(Huge,  ReadWrite);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1203
      SET_ESTIMATED_SIZE(Huge,  MiscData);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1204
      SET_ESTIMATED_SIZE(Huge,  MiscCode);
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1205
    }
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1206
  }
a28e6335ce60 8048150: Allow easy configurations for large CDS archives
ccheung
parents: 26135
diff changeset
  1207
}