hotspot/src/share/vm/gc_implementation/concurrentMarkSweep/cmsPermGen.cpp
author xlu
Mon, 06 Apr 2009 15:47:39 -0700
changeset 2526 39a58a50be35
parent 386 7f121b1192f2
child 5547 f4b087cbb361
permissions -rw-r--r--
6699669: Hotspot server leaves synchronized block with monitor in bad state Summary: Remove usage of _highest_lock field in Thread so that is_lock_owned won't depend on the correct update of that field. Reviewed-by: never, dice, acorn
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/*
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 * Copyright (c) 2007 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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 * CA 95054 USA or visit www.sun.com if you need additional information or
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 * have any questions.
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 *
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 */
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#include "incls/_precompiled.incl"
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#include "incls/_cmsPermGen.cpp.incl"
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CMSPermGen::CMSPermGen(ReservedSpace rs, size_t initial_byte_size,
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             CardTableRS* ct,
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             FreeBlockDictionary::DictionaryChoice dictionaryChoice) {
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  CMSPermGenGen* g =
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    new CMSPermGenGen(rs, initial_byte_size, -1, ct);
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  if (g == NULL) {
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    vm_exit_during_initialization("Could not allocate a CompactingPermGen");
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  }
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  g->initialize_performance_counters();
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  _gen = g;
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}
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HeapWord* CMSPermGen::mem_allocate(size_t size) {
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  Mutex* lock = _gen->freelistLock();
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  bool lock_owned = lock->owned_by_self();
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  if (lock_owned) {
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    MutexUnlocker mul(lock);
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    return mem_allocate_in_gen(size, _gen);
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  } else {
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    return mem_allocate_in_gen(size, _gen);
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  }
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}
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void CMSPermGen::compute_new_size() {
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  _gen->compute_new_size();
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}
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void CMSPermGenGen::initialize_performance_counters() {
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  const char* gen_name = "perm";
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  // Generation Counters - generation 2, 1 subspace
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  _gen_counters = new GenerationCounters(gen_name, 2, 1, &_virtual_space);
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  _gc_counters = NULL;
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  _space_counters = new GSpaceCounters(gen_name, 0,
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                                       _virtual_space.reserved_size(),
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                                       this, _gen_counters);
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}