os_aix.inline.hpp revision 5969:666e6ce3976c
1/* 2 * Copyright (c) 1999, 2013, Oracle and/or its affiliates. All rights reserved. 3 * Copyright 2012, 2013 SAP AG. All rights reserved. 4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 5 * 6 * This code is free software; you can redistribute it and/or modify it 7 * under the terms of the GNU General Public License version 2 only, as 8 * published by the Free Software Foundation. 9 * 10 * This code is distributed in the hope that it will be useful, but WITHOUT 11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 13 * version 2 for more details (a copy is included in the LICENSE file that 14 * accompanied this code). 15 * 16 * You should have received a copy of the GNU General Public License version 17 * 2 along with this work; if not, write to the Free Software Foundation, 18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 19 * 20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 21 * or visit www.oracle.com if you need additional information or have any 22 * questions. 23 * 24 */ 25 26#ifndef OS_AIX_VM_OS_AIX_INLINE_HPP 27#define OS_AIX_VM_OS_AIX_INLINE_HPP 28 29#include "runtime/atomic.hpp" 30#include "runtime/os.hpp" 31#ifdef TARGET_OS_ARCH_aix_ppc 32# include "atomic_aix_ppc.inline.hpp" 33# include "orderAccess_aix_ppc.inline.hpp" 34#endif 35 36// System includes 37 38#include <unistd.h> 39#include <sys/socket.h> 40#include <sys/poll.h> 41#include <sys/ioctl.h> 42#include <netdb.h> 43 44// Defined in the system headers included above. 45#undef rem_size 46 47inline void* os::thread_local_storage_at(int index) { 48 return pthread_getspecific((pthread_key_t)index); 49} 50 51inline const char* os::file_separator() { 52 return "/"; 53} 54 55inline const char* os::line_separator() { 56 return "\n"; 57} 58 59inline const char* os::path_separator() { 60 return ":"; 61} 62 63// File names are case-sensitive on windows only 64inline int os::file_name_strcmp(const char* s1, const char* s2) { 65 return strcmp(s1, s2); 66} 67 68inline bool os::obsolete_option(const JavaVMOption *option) { 69 return false; 70} 71 72inline bool os::uses_stack_guard_pages() { 73 return true; 74} 75 76inline bool os::allocate_stack_guard_pages() { 77 assert(uses_stack_guard_pages(), "sanity check"); 78 return true; 79} 80 81 82// On Aix, reservations are made on a page by page basis, nothing to do. 83inline void os::pd_split_reserved_memory(char *base, size_t size, 84 size_t split, bool realloc) { 85} 86 87 88// Bang the shadow pages if they need to be touched to be mapped. 89inline void os::bang_stack_shadow_pages() { 90} 91 92inline void os::dll_unload(void *lib) { 93 ::dlclose(lib); 94} 95 96inline const int os::default_file_open_flags() { return 0;} 97 98inline DIR* os::opendir(const char* dirname) 99{ 100 assert(dirname != NULL, "just checking"); 101 return ::opendir(dirname); 102} 103 104inline int os::readdir_buf_size(const char *path) 105{ 106 // according to aix sys/limits, NAME_MAX must be retrieved at runtime. */ 107 const long my_NAME_MAX = pathconf(path, _PC_NAME_MAX); 108 return my_NAME_MAX + sizeof(dirent) + 1; 109} 110 111inline jlong os::lseek(int fd, jlong offset, int whence) { 112 return (jlong) ::lseek64(fd, offset, whence); 113} 114 115inline int os::fsync(int fd) { 116 return ::fsync(fd); 117} 118 119inline char* os::native_path(char *path) { 120 return path; 121} 122 123inline int os::ftruncate(int fd, jlong length) { 124 return ::ftruncate64(fd, length); 125} 126 127inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf) 128{ 129 dirent* p; 130 int status; 131 assert(dirp != NULL, "just checking"); 132 133 // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX 134 // version. Here is the doc for this function: 135 // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html 136 137 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) { 138 errno = status; 139 return NULL; 140 } else 141 return p; 142} 143 144inline int os::closedir(DIR *dirp) { 145 assert(dirp != NULL, "argument is NULL"); 146 return ::closedir(dirp); 147} 148 149// macros for restartable system calls 150 151#define RESTARTABLE(_cmd, _result) do { \ 152 _result = _cmd; \ 153 } while(((int)_result == OS_ERR) && (errno == EINTR)) 154 155#define RESTARTABLE_RETURN_INT(_cmd) do { \ 156 int _result; \ 157 RESTARTABLE(_cmd, _result); \ 158 return _result; \ 159} while(false) 160 161// We don't have NUMA support on Aix, but we need this for compilation. 162inline bool os::numa_has_static_binding() { ShouldNotReachHere(); return true; } 163inline bool os::numa_has_group_homing() { ShouldNotReachHere(); return false; } 164 165inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { 166 size_t res; 167 RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res); 168 return res; 169} 170 171inline size_t os::write(int fd, const void *buf, unsigned int nBytes) { 172 size_t res; 173 RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res); 174 return res; 175} 176 177inline int os::close(int fd) { 178 return ::close(fd); 179} 180 181inline int os::socket_close(int fd) { 182 return ::close(fd); 183} 184 185inline int os::socket(int domain, int type, int protocol) { 186 return ::socket(domain, type, protocol); 187} 188 189inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) { 190 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags)); 191} 192 193inline int os::send(int fd, char* buf, size_t nBytes, uint flags) { 194 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags)); 195} 196 197inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) { 198 return os::send(fd, buf, nBytes, flags); 199} 200 201inline int os::timeout(int fd, long timeout) { 202 julong prevtime,newtime; 203 struct timeval t; 204 205 gettimeofday(&t, NULL); 206 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; 207 208 for(;;) { 209 struct pollfd pfd; 210 211 pfd.fd = fd; 212 pfd.events = POLLIN | POLLERR; 213 214 int res = ::poll(&pfd, 1, timeout); 215 216 if (res == OS_ERR && errno == EINTR) { 217 218 // On Linux any value < 0 means "forever" 219 220 if(timeout >= 0) { 221 gettimeofday(&t, NULL); 222 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; 223 timeout -= newtime - prevtime; 224 if(timeout <= 0) 225 return OS_OK; 226 prevtime = newtime; 227 } 228 } else 229 return res; 230 } 231} 232 233inline int os::listen(int fd, int count) { 234 return ::listen(fd, count); 235} 236 237inline int os::connect(int fd, struct sockaddr* him, socklen_t len) { 238 RESTARTABLE_RETURN_INT(::connect(fd, him, len)); 239} 240 241inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) { 242 // Linux doc says this can't return EINTR, unlike accept() on Solaris. 243 // But see attachListener_linux.cpp, LinuxAttachListener::dequeue(). 244 return (int)::accept(fd, him, len); 245} 246 247inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags, 248 sockaddr* from, socklen_t* fromlen) { 249 RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen)); 250} 251 252inline int os::sendto(int fd, char* buf, size_t len, uint flags, 253 struct sockaddr* to, socklen_t tolen) { 254 RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen)); 255} 256 257inline int os::socket_shutdown(int fd, int howto) { 258 return ::shutdown(fd, howto); 259} 260 261inline int os::bind(int fd, struct sockaddr* him, socklen_t len) { 262 return ::bind(fd, him, len); 263} 264 265inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) { 266 return ::getsockname(fd, him, len); 267} 268 269inline int os::get_host_name(char* name, int namelen) { 270 return ::gethostname(name, namelen); 271} 272 273inline struct hostent* os::get_host_by_name(char* name) { 274 return ::gethostbyname(name); 275} 276 277inline int os::get_sock_opt(int fd, int level, int optname, 278 char* optval, socklen_t* optlen) { 279 return ::getsockopt(fd, level, optname, optval, optlen); 280} 281 282inline int os::set_sock_opt(int fd, int level, int optname, 283 const char* optval, socklen_t optlen) { 284 return ::setsockopt(fd, level, optname, optval, optlen); 285} 286#endif // OS_AIX_VM_OS_AIX_INLINE_HPP 287