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1 /*
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196
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2 * Copyright 1997-2008 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 inline const char* os::file_separator() { return "\\"; }
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26 inline const char* os::line_separator() { return "\r\n"; }
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27 inline const char* os::path_separator() { return ";"; }
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28
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29 inline const char* os::jlong_format_specifier() { return "%I64d"; }
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30 inline const char* os::julong_format_specifier() { return "%I64u"; }
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31
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32 // File names are case-insensitive on windows only
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33 inline int os::file_name_strcmp(const char* s, const char* t) {
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34 return _stricmp(s, t);
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35 }
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36
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37 // Used to improve time-sharing on some systems
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38 inline void os::loop_breaker(int attempts) {}
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39
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40 inline bool os::obsolete_option(const JavaVMOption *option) {
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41 return false;
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42 }
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43
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44 inline bool os::uses_stack_guard_pages() {
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45 return os::win32::is_nt();
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46 }
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47
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48 inline bool os::allocate_stack_guard_pages() {
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49 assert(uses_stack_guard_pages(), "sanity check");
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50 return true;
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51 }
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52
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53 inline int os::readdir_buf_size(const char *path)
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54 {
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55 /* As Windows doesn't use the directory entry buffer passed to
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56 os::readdir() this can be as short as possible */
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57
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58 return 1;
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59 }
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60
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61 // Bang the shadow pages if they need to be touched to be mapped.
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62 inline void os::bang_stack_shadow_pages() {
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63 // Write to each page of our new frame to force OS mapping.
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64 // If we decrement stack pointer more than one page
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65 // the OS may not map an intervening page into our space
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66 // and may fault on a memory access to interior of our frame.
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67 address sp = current_stack_pointer();
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68 for (int pages = 1; pages <= StackShadowPages; pages++) {
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69 *((int *)(sp - (pages * vm_page_size()))) = 0;
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70 }
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71 }
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141
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72
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73 inline bool os::numa_has_static_binding() { return true; }
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74 inline bool os::numa_has_group_homing() { return false; }
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