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

     1 /*

     2  * Copyright (c) 1997, 2010, 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

    21  * questions.

    22  *

    23  */

    25 #ifndef OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP

    26 #define OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP

    28 #include "runtime/atomic.hpp"

    29 #include "runtime/atomic.inline.hpp"

    30 #include "runtime/os.hpp"

    32 #ifdef TARGET_OS_ARCH_windows_x86

    33 # include "orderAccess_windows_x86.inline.hpp"

    34 #endif

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

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

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

    39 inline const char* os::dll_file_extension()            { return ".dll"; }

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

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

    44 inline const int os::default_file_open_flags() { return O_BINARY | O_NOINHERIT;}

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

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

    48   return _stricmp(s, t);

    49 }

    51 inline void  os::dll_unload(void *lib) {

    52   ::FreeLibrary((HMODULE)lib);

    53 }

    55 inline void* os::dll_lookup(void *lib, const char *name) {

    56   return (void*)::GetProcAddress((HMODULE)lib, name);

    57 }

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

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

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

    63   return false;

    64 }

    66 inline bool os::uses_stack_guard_pages() {

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

    68 }

    70 inline bool os::allocate_stack_guard_pages() {

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

    72   return true;

    73 }

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

    76 {

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

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

    80   return 1;

    81 }

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

    84 inline void os::bang_stack_shadow_pages() {

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

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

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

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

    89   address sp = current_stack_pointer();

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

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

    92   }

    93 }

    95 inline bool os::numa_has_static_binding()   { return true;   }

    96 inline bool os::numa_has_group_homing()     { return false;  }

    98 inline size_t os::read(int fd, void *buf, unsigned int nBytes) {

    99   return ::read(fd, buf, nBytes);

   100 }

   102 inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {

   103   return ::read(fd, buf, nBytes);

   104 }

   106 inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {

   107   return ::write(fd, buf, nBytes);

   108 }

   110 inline int os::close(int fd) {

   111   return ::close(fd);

   112 }

   113 #endif // OS_WINDOWS_VM_OS_WINDOWS_INLINE_HPP

src/os/windows/vm/os_windows.inline.hpp@cd3d6a6b95d9