1 /* 2 * Copyright 1997-2008 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 */ 24 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 ";"; } 28 29 inline const char* os::jlong_format_specifier() { return "%I64d"; } 30 inline const char* os::julong_format_specifier() { return "%I64u"; } 31 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 } 36 37 // Used to improve time-sharing on some systems 38 inline void os::loop_breaker(int attempts) {} 39 40 inline bool os::obsolete_option(const JavaVMOption *option) { 41 return false; 42 } 43 44 inline bool os::uses_stack_guard_pages() { 45 return os::win32::is_nt(); 46 } 47 48 inline bool os::allocate_stack_guard_pages() { 49 assert(uses_stack_guard_pages(), "sanity check"); 50 return true; 51 } 52 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 */ 57 58 return 1; 59 } 60 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 } 72 73 inline bool os::numa_has_static_binding() { return true; } 74 inline bool os::numa_has_group_homing() { return false; }