jdk8-mips64-public/hotspot: src/share/vm/memory/metaspaceShared.hpp@b985cbb00e68 (annotated)

src/share/vm/memory/metaspaceShared.hpp@b985cbb00e68 (annotated)

src/share/vm/memory/metaspaceShared.hpp

Mon, 12 Aug 2019 18:30:40 +0300

author: apetushkov
date: Mon, 12 Aug 2019 18:30:40 +0300
changeset 9858: b985cbb00e68
parent 8509: cb4af293fe70
child 8604: 04d83ba48607
permissions: -rw-r--r--

8223147: JFR Backport
8199712: Flight Recorder
8203346: JFR: Inconsistent signature of jfr_add_string_constant
8195817: JFR.stop should require name of recording
8195818: JFR.start should increase autogenerated name by one
8195819: Remove recording=x from jcmd JFR.check output
8203921: JFR thread sampling is missing fixes from JDK-8194552
8203929: Limit amount of data for JFR.dump
8203664: JFR start failure after AppCDS archive created with JFR StartFlightRecording
8003209: JFR events for network utilization
8207392: [PPC64] Implement JFR profiling
8202835: jfr/event/os/TestSystemProcess.java fails on missing events
Summary: Backport JFR from JDK11. Initial integration
Reviewed-by: neugens

 /*
  * Copyright (c) 2012, 2016, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.
  *
  * This code is distributed in the hope that it will be useful, but WITHOUT
  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  *
  */
 #ifndef SHARE_VM_MEMORY_METASPACE_SHARED_HPP
 #define SHARE_VM_MEMORY_METASPACE_SHARED_HPP
 #include "memory/allocation.hpp"
 #include "memory/memRegion.hpp"
 #include "runtime/virtualspace.hpp"
 #include "utilities/exceptions.hpp"
 #include "utilities/macros.hpp"
 #define LargeSharedArchiveSize    (300*M)
 #define HugeSharedArchiveSize     (800*M)
 #define ReadOnlyRegionPercentage  0.39
 #define ReadWriteRegionPercentage 0.50
 #define MiscDataRegionPercentage  0.09
 #define MiscCodeRegionPercentage  0.02
 #define LargeThresholdClassCount  5000
 #define HugeThresholdClassCount   40000
 #define SET_ESTIMATED_SIZE(type, region)                              \
   Shared ##region## Size  = FLAG_IS_DEFAULT(Shared ##region## Size) ? \
     (uintx)(type ## SharedArchiveSize *  region ## RegionPercentage) : Shared ## region ## Size
 class FileMapInfo;
 // Class Data Sharing Support
 class MetaspaceShared : AllStatic {
   // CDS support
   static ReservedSpace* _shared_rs;
   static int _max_alignment;
   static bool _link_classes_made_progress;
   static bool _check_classes_made_progress;
   static bool _has_error_classes;
   static bool _archive_loading_failed;
   static bool _remapped_readwrite;
  public:
   enum {
     vtbl_list_size         = 17,   // number of entries in the shared space vtable list.
     num_virtuals           = 200,  // maximum number of virtual functions
                                    // If virtual functions are added to Metadata,
                                    // this number needs to be increased.  Also,
                                    // SharedMiscCodeSize will need to be increased.
                                    // The following 2 sizes were based on
                                    // MetaspaceShared::generate_vtable_methods()
     vtbl_method_size       = 16,   // conservative size of the mov1 and jmp instructions
                                    // for the x64 platform
     vtbl_common_code_size  = (1*K) // conservative size of the "common_code" for the x64 platform
   };
   enum {
     ro = 0,  // read-only shared space in the heap
     rw = 1,  // read-write shared space in the heap
     md = 2,  // miscellaneous data for initializing tables, etc.
     mc = 3,  // miscellaneous code - vtable replacement.
     n_regions = 4
   };
   // Accessor functions to save shared space created for metadata, which has
   // extra space allocated at the end for miscellaneous data and code.
   static void set_max_alignment(int alignment) {
     CDS_ONLY(_max_alignment = alignment);
   }
   static int max_alignment() {
     CDS_ONLY(return _max_alignment);
     NOT_CDS(return 0);
   }
   static void prepare_for_dumping() NOT_CDS_RETURN;
   static void preload_and_dump(TRAPS) NOT_CDS_RETURN;
   static int preload_and_dump(const char * class_list_path,
                               GrowableArray<Klass*>* class_promote_order,
                               TRAPS) NOT_CDS_RETURN;
   static ReservedSpace* shared_rs() {
     CDS_ONLY(return _shared_rs);
     NOT_CDS(return NULL);
   }
   static void set_shared_rs(ReservedSpace* rs) {
     CDS_ONLY(_shared_rs = rs;)
   }
   static void set_archive_loading_failed() {
     _archive_loading_failed = true;
   }
   static bool map_shared_spaces(FileMapInfo* mapinfo) NOT_CDS_RETURN_(false);
   static void initialize_shared_spaces() NOT_CDS_RETURN;
   // Return true if given address is in the mapped shared space.
   static bool is_in_shared_space(const void* p) NOT_CDS_RETURN_(false);
   static void generate_vtable_methods(void** vtbl_list,
                                       void** vtable,
                                       char** md_top, char* md_end,
                                       char** mc_top, char* mc_end);
   static void serialize(SerializeClosure* sc);
   // JVM/TI RedefineClasses() support:
   // Remap the shared readonly space to shared readwrite, private if
   // sharing is enabled. Simply returns true if sharing is not enabled
   // or if the remapping has already been done by a prior call.
   static bool remap_shared_readonly_as_readwrite() NOT_CDS_RETURN_(true);
   static bool remapped_readwrite() {
     CDS_ONLY(return _remapped_readwrite);
     NOT_CDS(return false);
   }
   static void print_shared_spaces();
   static bool try_link_class(InstanceKlass* ik, TRAPS);
   static void link_one_shared_class(Klass* obj, TRAPS);
   static void check_one_shared_class(Klass* obj);
   static void link_and_cleanup_shared_classes(TRAPS);
   static int count_class(const char* classlist_file);
   static void estimate_regions_size() NOT_CDS_RETURN;
 };
 #endif // SHARE_VM_MEMORY_METASPACE_SHARED_HPP

Mercurial > jdk8-mips64-public > hotspot / annotate

src/share/vm/memory/metaspaceShared.hpp@b985cbb00e68 (annotated)

src/share/vm/memory/metaspaceShared.hpp