jdk8-mips64-public/hotspot: src/os_cpu/linux_x86/vm/globals_linux

8023956: Provide a work-around to broken Linux 32 bit "Exec Shield" using CS for NX emulation (crashing with SI_KERNEL)
Summary: Execute some code at a high virtual address value, and keep mapped
Reviewed-by: coleenp, zgu

     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  */

    25 #ifndef OS_CPU_LINUX_X86_VM_GLOBALS_LINUX_X86_HPP

    26 #define OS_CPU_LINUX_X86_VM_GLOBALS_LINUX_X86_HPP

    28 // Sets the default values for platform dependent flags used by the runtime system.

    29 // (see globals.hpp)

    31 define_pd_global(bool, DontYieldALot,            false);

    32 #ifdef AMD64

    33 define_pd_global(intx, ThreadStackSize,          1024); // 0 => use system default

    34 define_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.

    39 define_pd_global(intx, ThreadStackSize,          320);

    40 define_pd_global(intx, VMThreadStackSize,        512);

    41 #endif // AMD64

    43 define_pd_global(intx, CompilerThreadStackSize,  0);

    45 define_pd_global(uintx,JVMInvokeMethodSlack,     8192);

    47 // Used on 64 bit platforms for UseCompressedOops base address

    48 define_pd_global(uintx,HeapBaseMinAddress,       2*G);

    50 #endif // OS_CPU_LINUX_X86_VM_GLOBALS_LINUX_X86_HPP

src/os_cpu/linux_x86/vm/globals_linux_x86.hpp@899ecf76b570

src/os_cpu/linux_x86/vm/globals_linux_x86.hpp

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

src/os_cpu/linux_x86/vm/globals_linux_x86.hpp@899ecf76b570

src/os_cpu/linux_x86/vm/globals_linux_x86.hpp