Wed, 16 Feb 2011 13:30:31 -0800
7013964: openjdk LICENSE file needs rebranding
Reviewed-by: darcy, katleman, jjg
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 */
25 #ifndef OS_LINUX_VM_OS_LINUX_INLINE_HPP
26 #define OS_LINUX_VM_OS_LINUX_INLINE_HPP
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
43 // System includes
45 #include <unistd.h>
46 #include <sys/socket.h>
47 #include <sys/poll.h>
48 #include <netdb.h>
50 inline void* os::thread_local_storage_at(int index) {
51 return pthread_getspecific((pthread_key_t)index);
52 }
54 inline const char* os::file_separator() {
55 return "/";
56 }
58 inline const char* os::line_separator() {
59 return "\n";
60 }
62 inline const char* os::path_separator() {
63 return ":";
64 }
66 inline const char* os::jlong_format_specifier() {
67 return "%lld";
68 }
70 inline const char* os::julong_format_specifier() {
71 return "%llu";
72 }
74 // File names are case-sensitive on windows only
75 inline int os::file_name_strcmp(const char* s1, const char* s2) {
76 return strcmp(s1, s2);
77 }
79 inline bool os::obsolete_option(const JavaVMOption *option) {
80 return false;
81 }
83 inline bool os::uses_stack_guard_pages() {
84 return true;
85 }
87 inline bool os::allocate_stack_guard_pages() {
88 assert(uses_stack_guard_pages(), "sanity check");
89 return true;
90 }
93 // On Linux, reservations are made on a page by page basis, nothing to do.
94 inline void os::split_reserved_memory(char *base, size_t size,
95 size_t split, bool realloc) {
96 }
99 // Bang the shadow pages if they need to be touched to be mapped.
100 inline void os::bang_stack_shadow_pages() {
101 }
103 inline void os::dll_unload(void *lib) {
104 ::dlclose(lib);
105 }
107 inline const int os::default_file_open_flags() { return 0;}
109 inline DIR* os::opendir(const char* dirname)
110 {
111 assert(dirname != NULL, "just checking");
112 return ::opendir(dirname);
113 }
115 inline int os::readdir_buf_size(const char *path)
116 {
117 return NAME_MAX + sizeof(dirent) + 1;
118 }
120 inline jlong os::lseek(int fd, jlong offset, int whence) {
121 return (jlong) ::lseek64(fd, offset, whence);
122 }
124 inline int os::fsync(int fd) {
125 return ::fsync(fd);
126 }
128 inline char* os::native_path(char *path) {
129 return path;
130 }
132 inline int os::ftruncate(int fd, jlong length) {
133 return ::ftruncate64(fd, length);
134 }
136 inline struct dirent* os::readdir(DIR* dirp, dirent *dbuf)
137 {
138 dirent* p;
139 int status;
140 assert(dirp != NULL, "just checking");
142 // NOTE: Linux readdir_r (on RH 6.2 and 7.2 at least) is NOT like the POSIX
143 // version. Here is the doc for this function:
144 // http://www.gnu.org/manual/glibc-2.2.3/html_node/libc_262.html
146 if((status = ::readdir_r(dirp, dbuf, &p)) != 0) {
147 errno = status;
148 return NULL;
149 } else
150 return p;
151 }
153 inline int os::closedir(DIR *dirp) {
154 assert(dirp != NULL, "argument is NULL");
155 return ::closedir(dirp);
156 }
158 // macros for restartable system calls
160 #define RESTARTABLE(_cmd, _result) do { \
161 _result = _cmd; \
162 } while(((int)_result == OS_ERR) && (errno == EINTR))
164 #define RESTARTABLE_RETURN_INT(_cmd) do { \
165 int _result; \
166 RESTARTABLE(_cmd, _result); \
167 return _result; \
168 } while(false)
170 inline bool os::numa_has_static_binding() { return true; }
171 inline bool os::numa_has_group_homing() { return false; }
173 inline size_t os::restartable_read(int fd, void *buf, unsigned int nBytes) {
174 size_t res;
175 RESTARTABLE( (size_t) ::read(fd, buf, (size_t) nBytes), res);
176 return res;
177 }
179 inline size_t os::write(int fd, const void *buf, unsigned int nBytes) {
180 size_t res;
181 RESTARTABLE((size_t) ::write(fd, buf, (size_t) nBytes), res);
182 return res;
183 }
185 inline int os::close(int fd) {
186 return ::close(fd);
187 }
189 inline int os::socket_close(int fd) {
190 return ::close(fd);
191 }
193 inline int os::socket(int domain, int type, int protocol) {
194 return ::socket(domain, type, protocol);
195 }
197 inline int os::recv(int fd, char *buf, int nBytes, int flags) {
198 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, (unsigned int) flags));
199 }
201 inline int os::send(int fd, char *buf, int nBytes, int flags) {
202 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, (unsigned int) flags));
203 }
205 inline int os::raw_send(int fd, char *buf, int nBytes, int flags) {
206 return os::send(fd, buf, nBytes, flags);
207 }
209 inline int os::timeout(int fd, long timeout) {
210 julong prevtime,newtime;
211 struct timeval t;
213 gettimeofday(&t, NULL);
214 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
216 for(;;) {
217 struct pollfd pfd;
219 pfd.fd = fd;
220 pfd.events = POLLIN | POLLERR;
222 int res = ::poll(&pfd, 1, timeout);
224 if (res == OS_ERR && errno == EINTR) {
226 // On Linux any value < 0 means "forever"
228 if(timeout >= 0) {
229 gettimeofday(&t, NULL);
230 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
231 timeout -= newtime - prevtime;
232 if(timeout <= 0)
233 return OS_OK;
234 prevtime = newtime;
235 }
236 } else
237 return res;
238 }
239 }
241 inline int os::listen(int fd, int count) {
242 return ::listen(fd, count);
243 }
245 inline int os::connect(int fd, struct sockaddr *him, int len) {
246 RESTARTABLE_RETURN_INT(::connect(fd, him, len));
247 }
249 inline int os::accept(int fd, struct sockaddr *him, int *len) {
250 // This cast is from int to unsigned int on linux. Since we
251 // only pass the parameter "len" around the vm and don't try to
252 // fetch it's value, this cast is safe for now. The java.net group
253 // may need and want to change this interface someday if socklen_t goes
254 // to 64 bits on some platform that we support.
255 // Linux doc says this can't return EINTR, unlike accept() on Solaris
257 return ::accept(fd, him, (socklen_t *)len);
258 }
260 inline int os::recvfrom(int fd, char *buf, int nBytes, int flags,
261 sockaddr *from, int *fromlen) {
262 RESTARTABLE_RETURN_INT(::recvfrom(fd, buf, nBytes, (unsigned int) flags, from, (socklen_t *)fromlen));
263 }
265 inline int os::sendto(int fd, char *buf, int len, int flags,
266 struct sockaddr *to, int tolen) {
267 RESTARTABLE_RETURN_INT(::sendto(fd, buf, len, (unsigned int) flags, to, tolen));
268 }
270 inline int os::socket_shutdown(int fd, int howto){
271 return ::shutdown(fd, howto);
272 }
274 inline int os::bind(int fd, struct sockaddr *him, int len){
275 return ::bind(fd, him, len);
276 }
278 inline int os::get_sock_name(int fd, struct sockaddr *him, int *len){
279 return ::getsockname(fd, him, (socklen_t *)len);
280 }
282 inline int os::get_host_name(char* name, int namelen){
283 return ::gethostname(name, namelen);
284 }
286 inline struct hostent* os::get_host_by_name(char* name) {
287 return ::gethostbyname(name);
288 }
289 inline int os::get_sock_opt(int fd, int level, int optname,
290 char *optval, int* optlen){
291 return ::getsockopt(fd, level, optname, optval, (socklen_t *)optlen);
292 }
294 inline int os::set_sock_opt(int fd, int level, int optname,
295 const char *optval, int optlen){
296 return ::setsockopt(fd, level, optname, optval, optlen);
297 }
298 #endif // OS_LINUX_VM_OS_LINUX_INLINE_HPP