Fri, 08 May 2009 15:20:10 -0700
6838842: NUMA allocator: Segfault during startup on Linux
Summary: Restored os::free_memory() semantics
Reviewed-by: apetrusenko
duke@435 | 1 | /* |
xdono@631 | 2 | * Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved. |
duke@435 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
duke@435 | 4 | * |
duke@435 | 5 | * This code is free software; you can redistribute it and/or modify it |
duke@435 | 6 | * under the terms of the GNU General Public License version 2 only, as |
duke@435 | 7 | * published by the Free Software Foundation. |
duke@435 | 8 | * |
duke@435 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
duke@435 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
duke@435 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
duke@435 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
duke@435 | 13 | * accompanied this code). |
duke@435 | 14 | * |
duke@435 | 15 | * You should have received a copy of the GNU General Public License version |
duke@435 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
duke@435 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
duke@435 | 18 | * |
duke@435 | 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
duke@435 | 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
duke@435 | 21 | * have any questions. |
duke@435 | 22 | * |
duke@435 | 23 | */ |
duke@435 | 24 | |
duke@435 | 25 | inline void* os::thread_local_storage_at(int index) { |
duke@435 | 26 | return pthread_getspecific((pthread_key_t)index); |
duke@435 | 27 | } |
duke@435 | 28 | |
duke@435 | 29 | inline const char* os::file_separator() { |
duke@435 | 30 | return "/"; |
duke@435 | 31 | } |
duke@435 | 32 | |
duke@435 | 33 | inline const char* os::line_separator() { |
duke@435 | 34 | return "\n"; |
duke@435 | 35 | } |
duke@435 | 36 | |
duke@435 | 37 | inline const char* os::path_separator() { |
duke@435 | 38 | return ":"; |
duke@435 | 39 | } |
duke@435 | 40 | |
duke@435 | 41 | inline const char* os::jlong_format_specifier() { |
duke@435 | 42 | return "%lld"; |
duke@435 | 43 | } |
duke@435 | 44 | |
duke@435 | 45 | inline const char* os::julong_format_specifier() { |
duke@435 | 46 | return "%llu"; |
duke@435 | 47 | } |
duke@435 | 48 | |
duke@435 | 49 | // File names are case-sensitive on windows only |
duke@435 | 50 | inline int os::file_name_strcmp(const char* s1, const char* s2) { |
duke@435 | 51 | return strcmp(s1, s2); |
duke@435 | 52 | } |
duke@435 | 53 | |
duke@435 | 54 | inline bool os::obsolete_option(const JavaVMOption *option) { |
duke@435 | 55 | return false; |
duke@435 | 56 | } |
duke@435 | 57 | |
duke@435 | 58 | inline bool os::uses_stack_guard_pages() { |
duke@435 | 59 | return true; |
duke@435 | 60 | } |
duke@435 | 61 | |
duke@435 | 62 | inline bool os::allocate_stack_guard_pages() { |
duke@435 | 63 | assert(uses_stack_guard_pages(), "sanity check"); |
duke@435 | 64 | return true; |
duke@435 | 65 | } |
duke@435 | 66 | |
duke@435 | 67 | |
duke@435 | 68 | // On Linux, reservations are made on a page by page basis, nothing to do. |
duke@435 | 69 | inline void os::split_reserved_memory(char *base, size_t size, |
duke@435 | 70 | size_t split, bool realloc) { |
duke@435 | 71 | } |
duke@435 | 72 | |
duke@435 | 73 | |
duke@435 | 74 | // Bang the shadow pages if they need to be touched to be mapped. |
duke@435 | 75 | inline void os::bang_stack_shadow_pages() { |
duke@435 | 76 | } |
duke@435 | 77 | |
duke@435 | 78 | inline DIR* os::opendir(const char* dirname) |
duke@435 | 79 | { |
duke@435 | 80 | assert(dirname != NULL, "just checking"); |
duke@435 | 81 | return ::opendir(dirname); |
duke@435 | 82 | } |
duke@435 | 83 | |
duke@435 | 84 | inline int os::readdir_buf_size(const char *path) |
duke@435 | 85 | { |
duke@435 | 86 | return NAME_MAX + sizeof(dirent) + 1; |
duke@435 | 87 | } |
duke@435 | 88 | |
duke@435 | 89 | inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf) |
duke@435 | 90 | { |
duke@435 | 91 | dirent* p; |
duke@435 | 92 | int status; |
duke@435 | 93 | assert(dirp != NULL, "just checking"); |
duke@435 | 94 | |
duke@435 | 95 | // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX |
duke@435 | 96 | // version. Here is the doc for this function: |
duke@435 | 97 | // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html |
duke@435 | 98 | |
duke@435 | 99 | if((status = ::readdir_r(dirp, dbuf, &p)) != 0) { |
duke@435 | 100 | errno = status; |
duke@435 | 101 | return NULL; |
duke@435 | 102 | } else |
duke@435 | 103 | return p; |
duke@435 | 104 | } |
duke@435 | 105 | |
duke@435 | 106 | inline int os::closedir(DIR *dirp) |
duke@435 | 107 | { |
duke@435 | 108 | assert(dirp != NULL, "just checking"); |
duke@435 | 109 | return ::closedir(dirp); |
duke@435 | 110 | } |
duke@435 | 111 | |
duke@435 | 112 | // macros for restartable system calls |
duke@435 | 113 | |
duke@435 | 114 | #define RESTARTABLE(_cmd, _result) do { \ |
duke@435 | 115 | _result = _cmd; \ |
duke@435 | 116 | } while(((int)_result == OS_ERR) && (errno == EINTR)) |
duke@435 | 117 | |
duke@435 | 118 | #define RESTARTABLE_RETURN_INT(_cmd) do { \ |
duke@435 | 119 | int _result; \ |
duke@435 | 120 | RESTARTABLE(_cmd, _result); \ |
duke@435 | 121 | return _result; \ |
duke@435 | 122 | } while(false) |
iveresov@576 | 123 | |
iveresov@576 | 124 | inline bool os::numa_has_static_binding() { return true; } |
iveresov@576 | 125 | inline bool os::numa_has_group_homing() { return false; } |