1 /* 2 * Copyright (c) 1999, 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 */ 24 25 #ifndef OS_LINUX_VM_OS_LINUX_INLINE_HPP 26 #define OS_LINUX_VM_OS_LINUX_INLINE_HPP 27 28 #include "runtime/atomic.hpp" 29 #include "runtime/os.hpp" 30 #ifdef TARGET_OS_ARCH_linux_x86 31 # include "atomic_linux_x86.inline.hpp" 32 # include "orderAccess_linux_x86.inline.hpp" 33 #endif 34 #ifdef TARGET_OS_ARCH_linux_sparc 35 # include "atomic_linux_sparc.inline.hpp" 36 # include "orderAccess_linux_sparc.inline.hpp" 37 #endif 38 #ifdef TARGET_OS_ARCH_linux_zero 39 # include "atomic_linux_zero.inline.hpp" 40 # include "orderAccess_linux_zero.inline.hpp" 41 #endif 42 43 inline void* os::thread_local_storage_at(int index) { 44 return pthread_getspecific((pthread_key_t)index); 45 } 46 47 inline const char* os::file_separator() { 48 return "/"; 49 } 50 51 inline const char* os::line_separator() { 52 return "\n"; 53 } 54 55 inline const char* os::path_separator() { 56 return ":"; 57 } 58 59 inline const char* os::jlong_format_specifier() { 60 return "%lld"; 61 } 62 63 inline const char* os::julong_format_specifier() { 64 return "%llu"; 65 } 66 67 // File names are case-sensitive on windows only 68 inline int os::file_name_strcmp(const char* s1, const char* s2) { 69 return strcmp(s1, s2); 70 } 71 72 inline bool os::obsolete_option(const JavaVMOption *option) { 73 return false; 74 } 75 76 inline bool os::uses_stack_guard_pages() { 77 return true; 78 } 79 80 inline bool os::allocate_stack_guard_pages() { 81 assert(uses_stack_guard_pages(), "sanity check"); 82 return true; 83 } 84 85 86 // On Linux, reservations are made on a page by page basis, nothing to do. 87 inline void os::split_reserved_memory(char *base, size_t size, 88 size_t split, bool realloc) { 89 } 90 91 92 // Bang the shadow pages if they need to be touched to be mapped. 93 inline void os::bang_stack_shadow_pages() { 94 } 95 96 inline DIR* os::opendir(const char* dirname) 97 { 98 assert(dirname != NULL, "just checking"); 99 return ::opendir(dirname); 100 } 101 102 inline int os::readdir_buf_size(const char *path) 103 { 104 return NAME_MAX + sizeof(dirent) + 1; 105 } 106 107 inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf) 108 { 109 dirent* p; 110 int status; 111 assert(dirp != NULL, "just checking"); 112 113 // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX 114 // version. Here is the doc for this function: 115 // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html 116 117 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) { 118 errno = status; 119 return NULL; 120 } else 121 return p; 122 } 123 124 inline int os::closedir(DIR *dirp) 125 { 126 assert(dirp != NULL, "just checking"); 127 return ::closedir(dirp); 128 } 129 130 // macros for restartable system calls 131 132 #define RESTARTABLE(_cmd, _result) do { \ 133 _result = _cmd; \ 134 } while(((int)_result == OS_ERR) && (errno == EINTR)) 135 136 #define RESTARTABLE_RETURN_INT(_cmd) do { \ 137 int _result; \ 138 RESTARTABLE(_cmd, _result); \ 139 return _result; \ 140 } while(false) 141 142 inline bool os::numa_has_static_binding() { return true; } 143 inline bool os::numa_has_group_homing() { return false; } 144 145 #endif // OS_LINUX_VM_OS_LINUX_INLINE_HPP