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1 /*
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196
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2 * Copyright 1999-2008 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 void* os::thread_local_storage_at(int index) {
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26 return pthread_getspecific((pthread_key_t)index);
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27 }
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28
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29 inline const char* os::file_separator() {
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30 return "/";
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31 }
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32
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33 inline const char* os::line_separator() {
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34 return "\n";
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35 }
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36
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37 inline const char* os::path_separator() {
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38 return ":";
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39 }
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40
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41 inline const char* os::jlong_format_specifier() {
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42 return "%lld";
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43 }
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44
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45 inline const char* os::julong_format_specifier() {
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46 return "%llu";
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47 }
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48
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49 // File names are case-sensitive on windows only
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50 inline int os::file_name_strcmp(const char* s1, const char* s2) {
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51 return strcmp(s1, s2);
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52 }
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53
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54 inline bool os::obsolete_option(const JavaVMOption *option) {
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55 return false;
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56 }
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57
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58 inline bool os::uses_stack_guard_pages() {
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59 return true;
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60 }
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61
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62 inline bool os::allocate_stack_guard_pages() {
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63 assert(uses_stack_guard_pages(), "sanity check");
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64 return true;
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65 }
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66
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67
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68 // On Linux, reservations are made on a page by page basis, nothing to do.
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69 inline void os::split_reserved_memory(char *base, size_t size,
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70 size_t split, bool realloc) {
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71 }
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72
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73
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74 // Bang the shadow pages if they need to be touched to be mapped.
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75 inline void os::bang_stack_shadow_pages() {
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76 }
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77
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78 inline DIR* os::opendir(const char* dirname)
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79 {
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80 assert(dirname != NULL, "just checking");
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81 return ::opendir(dirname);
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82 }
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83
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84 inline int os::readdir_buf_size(const char *path)
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85 {
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86 return NAME_MAX + sizeof(dirent) + 1;
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87 }
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88
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89 inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf)
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90 {
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91 dirent* p;
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92 int status;
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93 assert(dirp != NULL, "just checking");
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94
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95 // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX
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96 // version. Here is the doc for this function:
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97 // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html
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98
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99 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
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100 errno = status;
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101 return NULL;
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102 } else
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103 return p;
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104 }
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105
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106 inline int os::closedir(DIR *dirp)
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107 {
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108 assert(dirp != NULL, "just checking");
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109 return ::closedir(dirp);
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110 }
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111
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112 // macros for restartable system calls
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113
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114 #define RESTARTABLE(_cmd, _result) do { \
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115 _result = _cmd; \
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116 } while(((int)_result == OS_ERR) && (errno == EINTR))
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117
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118 #define RESTARTABLE_RETURN_INT(_cmd) do { \
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119 int _result; \
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120 RESTARTABLE(_cmd, _result); \
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121 return _result; \
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122 } while(false)
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141
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123
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124 inline bool os::numa_has_static_binding() { return true; }
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125 inline bool os::numa_has_group_homing() { return false; }
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