os_bsd.inline.hpp revision 2909:11c26bfcf8c7
1/* 2 * Copyright (c) 1999, 2011, 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_BSD_VM_OS_BSD_INLINE_HPP 26#define OS_BSD_VM_OS_BSD_INLINE_HPP 27 28#include "runtime/atomic.hpp" 29#include "runtime/os.hpp" 30#ifdef TARGET_OS_ARCH_bsd_x86 31# include "atomic_bsd_x86.inline.hpp" 32# include "orderAccess_bsd_x86.inline.hpp" 33#endif 34#ifdef TARGET_OS_ARCH_bsd_zero 35# include "atomic_bsd_zero.inline.hpp" 36# include "orderAccess_bsd_zero.inline.hpp" 37#endif 38 39// System includes 40 41#include <unistd.h> 42#include <sys/socket.h> 43#include <sys/poll.h> 44#include <netdb.h> 45 46inline void* os::thread_local_storage_at(int index) { 47 return pthread_getspecific((pthread_key_t)index); 48} 49 50inline const char* os::file_separator() { 51 return "/"; 52} 53 54inline const char* os::line_separator() { 55 return "\n"; 56} 57 58inline const char* os::path_separator() { 59 return ":"; 60} 61 62inline const char* os::jlong_format_specifier() { 63 return "%lld"; 64} 65 66inline const char* os::julong_format_specifier() { 67 return "%llu"; 68} 69 70// File names are case-sensitive on windows only 71inline int os::file_name_strcmp(const char* s1, const char* s2) { 72 return strcmp(s1, s2); 73} 74 75inline bool os::obsolete_option(const JavaVMOption *option) { 76 return false; 77} 78 79inline bool os::uses_stack_guard_pages() { 80 return true; 81} 82 83inline bool os::allocate_stack_guard_pages() { 84 assert(uses_stack_guard_pages(), "sanity check"); 85#if !defined(__FreeBSD__) || __FreeBSD__ < 5 86 // Since FreeBSD 4 uses malloc() for allocating the thread stack 87 // there is no need to do anything extra to allocate the guard pages 88 return false; 89#else 90 // FreeBSD 5+ uses mmap MAP_STACK for allocating the thread stacks. 91 // Must 'allocate' them or guard pages are ignored. 92 return true; 93#endif 94} 95 96 97// On Bsd, reservations are made on a page by page basis, nothing to do. 98inline void os::split_reserved_memory(char *base, size_t size, 99 size_t split, bool realloc) { 100} 101 102 103// Bang the shadow pages if they need to be touched to be mapped. 104inline void os::bang_stack_shadow_pages() { 105} 106 107inline void os::dll_unload(void *lib) { 108 ::dlclose(lib); 109} 110 111inline const int os::default_file_open_flags() { return 0;} 112 113inline DIR* os::opendir(const char* dirname) 114{ 115 assert(dirname != NULL, "just checking"); 116 return ::opendir(dirname); 117} 118 119inline int os::readdir_buf_size(const char *path) 120{ 121 return NAME_MAX + sizeof(dirent) + 1; 122} 123 124inline jlong os::lseek(int fd, jlong offset, int whence) { 125 return (jlong) ::lseek(fd, offset, whence); 126} 127 128inline int os::fsync(int fd) { 129 return ::fsync(fd); 130} 131 132inline char* os::native_path(char *path) { 133 return path; 134} 135 136inline int os::ftruncate(int fd, jlong length) { 137 return ::ftruncate(fd, length); 138} 139 140inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf) 141{ 142 dirent* p; 143 int status; 144 assert(dirp != NULL, "just checking"); 145 146 // NOTE: Bsd readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX 147 // version. Here is the doc for this function: 148 // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html 149 150 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) { 151 errno = status; 152 return NULL; 153 } else 154 return p; 155} 156 157inline int os::closedir(DIR *dirp) { 158 assert(dirp != NULL, "argument is NULL"); 159 return ::closedir(dirp); 160} 161 162// macros for restartable system calls 163 164#define RESTARTABLE(_cmd, _result) do { \ 165 _result = _cmd; \ 166 } while(((int)_result == OS_ERR) && (errno == EINTR)) 167 168#define RESTARTABLE_RETURN_INT(_cmd) do { \ 169 int _result; \ 170 RESTARTABLE(_cmd, _result); \ 171 return _result; \ 172} while(false) 173 174inline bool os::numa_has_static_binding() { return true; } 175inline bool os::numa_has_group_homing() { return false; } 176 177inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) { 178 size_t res; 179 RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res); 180 return res; 181} 182 183inline size_t os::write(int fd, const void *buf, unsigned int nBytes) { 184 size_t res; 185 RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res); 186 return res; 187} 188 189inline int os::close(int fd) { 190 RESTARTABLE_RETURN_INT(::close(fd)); 191} 192 193inline int os::socket_close(int fd) { 194 RESTARTABLE_RETURN_INT(::close(fd)); 195} 196 197inline int os::socket(int domain, int type, int protocol) { 198 return ::socket(domain, type, protocol); 199} 200 201inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) { 202 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags)); 203} 204 205inline int os::send(int fd, char* buf, size_t nBytes, uint flags) { 206 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags)); 207} 208 209inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) { 210 return os::send(fd, buf, nBytes, flags); 211} 212 213inline int os::timeout(int fd, long timeout) { 214 julong prevtime,newtime; 215 struct timeval t; 216 217 gettimeofday(&t, NULL); 218 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; 219 220 for(;;) { 221 struct pollfd pfd; 222 223 pfd.fd = fd; 224 pfd.events = POLLIN | POLLERR; 225 226 int res = ::poll(&pfd, 1, timeout); 227 228 if (res == OS_ERR && errno == EINTR) { 229 230 // On Bsd any value < 0 means "forever" 231 232 if(timeout >= 0) { 233 gettimeofday(&t, NULL); 234 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000; 235 timeout -= newtime - prevtime; 236 if(timeout <= 0) 237 return OS_OK; 238 prevtime = newtime; 239 } 240 } else 241 return res; 242 } 243} 244 245inline int os::listen(int fd, int count) { 246 return ::listen(fd, count); 247} 248 249inline int os::connect(int fd, struct sockaddr* him, socklen_t len) { 250 RESTARTABLE_RETURN_INT(::connect(fd, him, len)); 251} 252 253inline int os::accept(int fd, struct sockaddr* him, socklen_t* len) { 254 // At least OpenBSD and FreeBSD can return EINTR from accept. 255 RESTARTABLE_RETURN_INT(::accept(fd, him, len)); 256} 257 258inline int os::recvfrom(int fd, char* buf, size_t nBytes, uint flags, 259 sockaddr* from, socklen_t* fromlen) { 260 RESTARTABLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, flags, from, fromlen)); 261} 262 263inline int os::sendto(int fd, char* buf, size_t len, uint flags, 264 struct sockaddr *to, socklen_t tolen) { 265 RESTARTABLE_RETURN_INT((int)::sendto(fd, buf, len, flags, to, tolen)); 266} 267 268inline int os::socket_shutdown(int fd, int howto) { 269 return ::shutdown(fd, howto); 270} 271 272inline int os::bind(int fd, struct sockaddr* him, socklen_t len) { 273 return ::bind(fd, him, len); 274} 275 276inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) { 277 return ::getsockname(fd, him, len); 278} 279 280inline int os::get_host_name(char* name, int namelen) { 281 return ::gethostname(name, namelen); 282} 283 284inline struct hostent* os::get_host_by_name(char* name) { 285 return ::gethostbyname(name); 286} 287 288inline int os::get_sock_opt(int fd, int level, int optname, 289 char *optval, socklen_t* optlen) { 290 return ::getsockopt(fd, level, optname, optval, optlen); 291} 292 293inline int os::set_sock_opt(int fd, int level, int optname, 294 const char* optval, socklen_t optlen) { 295 return ::setsockopt(fd, level, optname, optval, optlen); 296} 297#endif // OS_BSD_VM_OS_BSD_INLINE_HPP 298