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comparison: src/os/aix/vm/os_aix.inline.hpp

src/os/aix/vm/os_aix.inline.hpp

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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
47 inline void* os::thread_local_storage_at(int index) {
48 return pthread_getspecific((pthread_key_t)index);
49 }
50
51 inline const char* os::file_separator() {
52 return "/";
53 }
54
55 inline const char* os::line_separator() {
56 return "\n";
57 }
58
59 inline const char* os::path_separator() {
60 return ":";
61 }
62
63 // File names are case-sensitive on windows only
64 inline int os::file_name_strcmp(const char* s1, const char* s2) {
65 return strcmp(s1, s2);
66 }
67
68 inline bool os::obsolete_option(const JavaVMOption *option) {
69 return false;
70 }
71
72 inline bool os::uses_stack_guard_pages() {
73 return true;
74 }
75
76 inline 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.
83 inline 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.
89 inline void os::bang_stack_shadow_pages() {
90 }
91
92 inline void os::dll_unload(void *lib) {
93 ::dlclose(lib);
94 }
95
96 inline const int os::default_file_open_flags() { return 0;}
97
98 inline DIR* os::opendir(const char* dirname)
99 {
100 assert(dirname != NULL, "just checking");
101 return ::opendir(dirname);
102 }
103
104 inline 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
111 inline jlong os::lseek(int fd, jlong offset, int whence) {
112 return (jlong) ::lseek64(fd, offset, whence);
113 }
114
115 inline int os::fsync(int fd) {
116 return ::fsync(fd);
117 }
118
119 inline char* os::native_path(char *path) {
120 return path;
121 }
122
123 inline int os::ftruncate(int fd, jlong length) {
124 return ::ftruncate64(fd, length);
125 }
126
127 inline 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
144 inline 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.
162 inline bool os::numa_has_static_binding() { ShouldNotReachHere(); return true; }
163 inline bool os::numa_has_group_homing() { ShouldNotReachHere(); return false; }
164
165 inline 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
171 inline 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
177 inline int os::close(int fd) {
178 return ::close(fd);
179 }
180
181 inline int os::socket_close(int fd) {
182 return ::close(fd);
183 }
184
185 inline int os::socket(int domain, int type, int protocol) {
186 return ::socket(domain, type, protocol);
187 }
188
189 inline int os::recv(int fd, char* buf, size_t nBytes, uint flags) {
190 RESTARTABLE_RETURN_INT(::recv(fd, buf, nBytes, flags));
191 }
192
193 inline int os::send(int fd, char* buf, size_t nBytes, uint flags) {
194 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
195 }
196
197 inline int os::raw_send(int fd, char* buf, size_t nBytes, uint flags) {
198 return os::send(fd, buf, nBytes, flags);
199 }
200
201 inline 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
233 inline int os::listen(int fd, int count) {
234 return ::listen(fd, count);
235 }
236
237 inline int os::connect(int fd, struct sockaddr* him, socklen_t len) {
238 RESTARTABLE_RETURN_INT(::connect(fd, him, len));
239 }
240
241 inline 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
247 inline 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
252 inline 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
257 inline int os::socket_shutdown(int fd, int howto) {
258 return ::shutdown(fd, howto);
259 }
260
261 inline int os::bind(int fd, struct sockaddr* him, socklen_t len) {
262 return ::bind(fd, him, len);
263 }
264
265 inline int os::get_sock_name(int fd, struct sockaddr* him, socklen_t* len) {
266 return ::getsockname(fd, him, len);
267 }
268
269 inline int os::get_host_name(char* name, int namelen) {
270 return ::gethostname(name, namelen);
271 }
272
273 inline struct hostent* os::get_host_by_name(char* name) {
274 return ::gethostbyname(name);
275 }
276
277 inline 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
282 inline 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

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