globals_linux_x86.hpp revision 3792:5ec0c42da025 
1/*
2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
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23 */
24
25#ifndef OS_CPU_LINUX_X86_VM_GLOBALS_LINUX_X86_HPP
26#define OS_CPU_LINUX_X86_VM_GLOBALS_LINUX_X86_HPP
27
28// Sets the default values for platform dependent flags used by the runtime system.
29// (see globals.hpp)
30
31define_pd_global(bool, DontYieldALot,            false);
32#ifdef AMD64
33define_pd_global(intx, ThreadStackSize,          1024); // 0 => use system default
34define_pd_global(intx, VMThreadStackSize,        1024);
35#else
36// ThreadStackSize 320 allows a couple of test cases to run while
37// keeping the number of threads that can be created high.  System
38// default ThreadStackSize appears to be 512 which is too big.
39define_pd_global(intx, ThreadStackSize,          320);
40define_pd_global(intx, VMThreadStackSize,        512);
41#endif // AMD64
42
43define_pd_global(intx, CompilerThreadStackSize,  0);
44
45define_pd_global(uintx,JVMInvokeMethodSlack,     8192);
46
47// Used on 64 bit platforms for UseCompressedOops base address or CDS
48define_pd_global(uintx,HeapBaseMinAddress,       2*G);
49
50#endif // OS_CPU_LINUX_X86_VM_GLOBALS_LINUX_X86_HPP
51