1 /* 2 * Copyright (c) 1999, 2008, 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 */ 24 25 inline void* os::thread_local_storage_at(int index) { 26 return pthread_getspecific((pthread_key_t)index); 27 } 28 29 inline const char* os::file_separator() { 30 return "/"; 31 } 32 33 inline const char* os::line_separator() { 34 return "\n"; 35 } 36 37 inline const char* os::path_separator() { 38 return ":"; 39 } 40 41 inline const char* os::jlong_format_specifier() { 42 return "%lld"; 43 } 44 45 inline const char* os::julong_format_specifier() { 46 return "%llu"; 47 } 48 49 // File names are case-sensitive on windows only 50 inline int os::file_name_strcmp(const char* s1, const char* s2) { 51 return strcmp(s1, s2); 52 } 53 54 inline bool os::obsolete_option(const JavaVMOption *option) { 55 return false; 56 } 57 58 inline bool os::uses_stack_guard_pages() { 59 return true; 60 } 61 62 inline bool os::allocate_stack_guard_pages() { 63 assert(uses_stack_guard_pages(), "sanity check"); 64 return true; 65 } 66 67 68 // On Linux, reservations are made on a page by page basis, nothing to do. 69 inline void os::split_reserved_memory(char *base, size_t size, 70 size_t split, bool realloc) { 71 } 72 73 74 // Bang the shadow pages if they need to be touched to be mapped. 75 inline void os::bang_stack_shadow_pages() { 76 } 77 78 inline DIR* os::opendir(const char* dirname) 79 { 80 assert(dirname != NULL, "just checking"); 81 return ::opendir(dirname); 82 } 83 84 inline int os::readdir_buf_size(const char *path) 85 { 86 return NAME_MAX + sizeof(dirent) + 1; 87 } 88 89 inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf) 90 { 91 dirent* p; 92 int status; 93 assert(dirp != NULL, "just checking"); 94 95 // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX 96 // version. Here is the doc for this function: 97 // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html 98 99 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) { 100 errno = status; 101 return NULL; 102 } else 103 return p; 104 } 105 106 inline int os::closedir(DIR *dirp) 107 { 108 assert(dirp != NULL, "just checking"); 109 return ::closedir(dirp); 110 } 111 112 // macros for restartable system calls 113 114 #define RESTARTABLE(_cmd, _result) do { \ 115 _result = _cmd; \ 116 } while(((int)_result == OS_ERR) && (errno == EINTR)) 117 118 #define RESTARTABLE_RETURN_INT(_cmd) do { \ 119 int _result; \ 120 RESTARTABLE(_cmd, _result); \ 121 return _result; \ 122 } while(false) 123 124 inline bool os::numa_has_static_binding() { return true; } 125 inline bool os::numa_has_group_homing() { return false; }