Mercurial > jdk8-mips64-public > hotspot / file revision

 /*

  * Copyright (c) 2001, 2010, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

  * or visit www.oracle.com if you need additional information or have any

  * questions.

  *

  */

 #include "precompiled.hpp"

 #include "memory/compactPermGen.hpp"

 #include "memory/defNewGeneration.hpp"

 #include "memory/filemap.hpp"

 #include "memory/genRemSet.hpp"

 #include "memory/generationSpec.hpp"

 #include "memory/tenuredGeneration.hpp"

 #include "runtime/java.hpp"

 #ifndef SERIALGC

 #include "gc_implementation/concurrentMarkSweep/cmsPermGen.hpp"

 #include "gc_implementation/parNew/asParNewGeneration.hpp"

 #include "gc_implementation/parNew/parNewGeneration.hpp"

 #endif

 Generation* GenerationSpec::init(ReservedSpace rs, int level,

                                  GenRemSet* remset) {

   switch (name()) {

     case Generation::DefNew:

       return new DefNewGeneration(rs, init_size(), level);

     case Generation::MarkSweepCompact:

       return new TenuredGeneration(rs, init_size(), level, remset);

 #ifndef SERIALGC

     case Generation::ParNew:

       return new ParNewGeneration(rs, init_size(), level);

     case Generation::ASParNew:

       return new ASParNewGeneration(rs,

                                     init_size(),

                                     init_size() /* min size */,

                                     level);

     case Generation::ConcurrentMarkSweep: {

       assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");

       CardTableRS* ctrs = remset->as_CardTableRS();

       if (ctrs == NULL) {

         vm_exit_during_initialization("Rem set incompatibility.");

       }

       // Otherwise

       // The constructor creates the CMSCollector if needed,

       // else registers with an existing CMSCollector

       ConcurrentMarkSweepGeneration* g = NULL;

       g = new ConcurrentMarkSweepGeneration(rs,

                  init_size(), level, ctrs, UseCMSAdaptiveFreeLists,

                  (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);

       g->initialize_performance_counters();

       return g;

     }

     case Generation::ASConcurrentMarkSweep: {

       assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");

       CardTableRS* ctrs = remset->as_CardTableRS();

       if (ctrs == NULL) {

         vm_exit_during_initialization("Rem set incompatibility.");

       }

       // Otherwise

       // The constructor creates the CMSCollector if needed,

       // else registers with an existing CMSCollector

       ASConcurrentMarkSweepGeneration* g = NULL;

       g = new ASConcurrentMarkSweepGeneration(rs,

                  init_size(), level, ctrs, UseCMSAdaptiveFreeLists,

                  (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);

       g->initialize_performance_counters();

       return g;

     }

 #endif // SERIALGC

     default:

       guarantee(false, "unrecognized GenerationName");

       return NULL;

   }

 }

 PermanentGenerationSpec::PermanentGenerationSpec(PermGen::Name name,

                       size_t init_size, size_t max_size,

                       size_t read_only_size, size_t read_write_size,

                       size_t misc_data_size, size_t misc_code_size) {

   _name = name;

   _init_size = init_size;

   if (UseSharedSpaces || DumpSharedSpaces) {

     _enable_shared_spaces = true;

     if (UseSharedSpaces) {

       // Override shared space sizes from those in the file.

       FileMapInfo* mapinfo = FileMapInfo::current_info();

       _read_only_size = mapinfo->space_capacity(CompactingPermGenGen::ro);

       _read_write_size = mapinfo->space_capacity(CompactingPermGenGen::rw);

       _misc_data_size = mapinfo->space_capacity(CompactingPermGenGen::md);

       _misc_code_size = mapinfo->space_capacity(CompactingPermGenGen::mc);

     } else {

       _read_only_size = read_only_size;

       _read_write_size = read_write_size;

       _misc_data_size = misc_data_size;

       _misc_code_size = misc_code_size;

     }

   } else {

     _enable_shared_spaces = false;

     _read_only_size = 0;

     _read_write_size = 0;

     _misc_data_size = 0;

     _misc_code_size = 0;

   }

   _max_size = max_size;

 }

 PermGen* PermanentGenerationSpec::init(ReservedSpace rs,

                                        size_t init_size,

                                        GenRemSet *remset) {

   // Break the reserved spaces into pieces for the permanent space

   // and the shared spaces.

   ReservedSpace perm_rs = rs.first_part(_max_size, UseSharedSpaces,

                                         UseSharedSpaces);

   ReservedSpace shared_rs = rs.last_part(_max_size);

   if (enable_shared_spaces()) {

     if (!perm_rs.is_reserved() ||

         perm_rs.base() + perm_rs.size() != shared_rs.base()) {

       FileMapInfo* mapinfo = FileMapInfo::current_info();

       mapinfo->fail_continue("Sharing disabled - unable to "

                                  "reserve address space.");

       shared_rs.release();

       disable_sharing();

     }

   }

   switch (name()) {

     case PermGen::MarkSweepCompact:

       return new CompactingPermGen(perm_rs, shared_rs, init_size, remset, this);

 #ifndef SERIALGC

     case PermGen::MarkSweep:

       guarantee(false, "NYI");

       return NULL;

     case PermGen::ConcurrentMarkSweep: {

       assert(UseConcMarkSweepGC, "UseConcMarkSweepGC should be set");

       CardTableRS* ctrs = remset->as_CardTableRS();

       if (ctrs == NULL) {

         vm_exit_during_initialization("RemSet/generation incompatibility.");

       }

       // XXXPERM

       return new CMSPermGen(perm_rs, init_size, ctrs,

                    (FreeBlockDictionary::DictionaryChoice)CMSDictionaryChoice);

     }

 #endif // SERIALGC

     default:

       guarantee(false, "unrecognized GenerationName");

       return NULL;

   }

 }

 // Alignment

 void PermanentGenerationSpec::align(size_t alignment) {

   _init_size       = align_size_up(_init_size,       alignment);

   _max_size        = align_size_up(_max_size,        alignment);

   _read_only_size  = align_size_up(_read_only_size,  alignment);

   _read_write_size = align_size_up(_read_write_size, alignment);

   _misc_data_size  = align_size_up(_misc_data_size,  alignment);

   _misc_code_size  = align_size_up(_misc_code_size,  alignment);

   assert(enable_shared_spaces() || (_read_only_size + _read_write_size == 0),

          "Shared space when disabled?");

 }