jdk8-mips64-public/hotspot: src/os/windows/vm/os

     1 /*

     2  * Copyright 1997-2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

    20  * CA 95054 USA or visit www.sun.com if you need additional information or

    21  * have any questions.

    22  *

    23  */

    25 inline const char* os::file_separator()                { return "\\"; }

    26 inline const char* os::line_separator()                { return "\r\n"; }

    27 inline const char* os::path_separator()                { return ";"; }

    29 inline const char* os::jlong_format_specifier()        { return "%I64d"; }

    30 inline const char* os::julong_format_specifier()       { return "%I64u"; }

    32 // File names are case-insensitive on windows only

    33 inline int os::file_name_strcmp(const char* s, const char* t) {

    34   return _stricmp(s, t);

    35 }

    37 // Used to improve time-sharing on some systems

    38 inline void os::loop_breaker(int attempts) {}

    40 inline bool os::obsolete_option(const JavaVMOption *option) {

    41   return false;

    42 }

    44 inline bool os::uses_stack_guard_pages() {

    45   return os::win32::is_nt();

    46 }

    48 inline bool os::allocate_stack_guard_pages() {

    49   assert(uses_stack_guard_pages(), "sanity check");

    50   return true;

    51 }

    53 inline int os::readdir_buf_size(const char *path)

    54 {

    55   /* As Windows doesn't use the directory entry buffer passed to

    56      os::readdir() this can be as short as possible */

    58   return 1;

    59 }

    61 // Bang the shadow pages if they need to be touched to be mapped.

    62 inline void os::bang_stack_shadow_pages() {

    63   // Write to each page of our new frame to force OS mapping.

    64   // If we decrement stack pointer more than one page

    65   // the OS may not map an intervening page into our space

    66   // and may fault on a memory access to interior of our frame.

    67   address sp = current_stack_pointer();

    68   for (int pages = 1; pages <= StackShadowPages; pages++) {

    69     *((int *)(sp - (pages * vm_page_size()))) = 0;

    70   }

    71 }

src/os/windows/vm/os_windows.inline.hpp@a61af66fc99e