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6964458: Reimplement class meta-data storage to use native memory Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
author coleenp
date Sat, 01 Sep 2012 13:25:18 -0400
parents f08d439fab8c
children 5ec0c42da025
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/*
 * Copyright (c) 2000, 2012, 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 OS_CPU_BSD_X86_VM_GLOBALS_BSD_X86_HPP
#define OS_CPU_BSD_X86_VM_GLOBALS_BSD_X86_HPP

//
// Sets the default values for platform dependent flags used by the runtime system.
// (see globals.hpp)
//
define_pd_global(bool, DontYieldALot,            false);
#ifdef AMD64
define_pd_global(intx, ThreadStackSize,          1024); // 0 => use system default
define_pd_global(intx, VMThreadStackSize,        1024);
#else
// ThreadStackSize 320 allows a couple of test cases to run while
// keeping the number of threads that can be created high.  System
// default ThreadStackSize appears to be 512 which is too big.
define_pd_global(intx, ThreadStackSize,          320);
define_pd_global(intx, VMThreadStackSize,        512);
#endif // AMD64

define_pd_global(intx, CompilerThreadStackSize,  0);
define_pd_global(intx, SurvivorRatio,            8);

define_pd_global(uintx, JVMInvokeMethodSlack,    8192);

// Used on 64 bit platforms for UseCompressedOops base address or CDS
define_pd_global(uintx, HeapBaseMinAddress,      2*G);
// Only used on 64 bit Windows platforms
define_pd_global(bool, UseVectoredExceptions,    false);

#endif // OS_CPU_BSD_X86_VM_GLOBALS_BSD_X86_HPP