1 /*
2 * Copyright (c) 1998, 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 */
24
25 #ifndef OS_SOLARIS_VM_HPI_SOLARIS_HPP
26 #define OS_SOLARIS_VM_HPI_SOLARIS_HPP
27
28 //
29 // Parts of the HPI interface for which the HotSparc does not use the
30 // HPI (because the interruptible IO mechanims used are different).
31 //
32
33 #include <sys/socket.h>
34 #include <sys/poll.h>
35 #include <sys/filio.h>
36 #include <unistd.h>
37 #include <netdb.h>
38 #include <setjmp.h>
39
40 // HPI_FileInterface
41
42 // Many system calls can be interrupted by signals and must be restarted.
43 // Restart support was added without disturbing the extent of thread
44 // interruption support.
45
46 inline int hpi::close(int fd) {
47 RESTARTABLE_RETURN_INT(::close(fd));
48 }
49
50 inline size_t hpi::read(int fd, void *buf, unsigned int nBytes) {
51 INTERRUPTIBLE_RETURN_INT(::read(fd, buf, nBytes), os::Solaris::clear_interrupted);
52 }
53
54 inline size_t hpi::write(int fd, const void *buf, unsigned int nBytes) {
55 INTERRUPTIBLE_RETURN_INT(::write(fd, buf, nBytes), os::Solaris::clear_interrupted);
56 }
57
58
59 // HPI_SocketInterface
60
61 inline int hpi::socket_close(int fd) {
62 RESTARTABLE_RETURN_INT(::close(fd));
63 }
64
65 inline int hpi::socket(int domain, int type, int protocol) {
66 return ::socket(domain, type, protocol);
67 }
68
69 inline int hpi::recv(int fd, char *buf, int nBytes, int flags) {
70 INTERRUPTIBLE_RETURN_INT(::recv(fd, buf, nBytes, flags), os::Solaris::clear_interrupted);
71 }
72
73 inline int hpi::send(int fd, char *buf, int nBytes, int flags) {
74 INTERRUPTIBLE_RETURN_INT(::send(fd, buf, nBytes, flags), os::Solaris::clear_interrupted);
75 }
76
77 inline int hpi::raw_send(int fd, char *buf, int nBytes, int flags) {
78 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
79 }
80
81 // As both poll and select can be interrupted by signals, we have to be
82 // prepared to restart the system call after updating the timeout, unless
83 // a poll() is done with timeout == -1, in which case we repeat with this
84 // "wait forever" value.
85
86 inline int hpi::timeout(int fd, long timeout) {
87 int res;
88 struct timeval t;
89 julong prevtime, newtime;
90 static const char* aNull = 0;
91
92 struct pollfd pfd;
93 pfd.fd = fd;
94 pfd.events = POLLIN;
95
96 gettimeofday(&t, &aNull);
97 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
98
99 for(;;) {
100 INTERRUPTIBLE_NORESTART(::poll(&pfd, 1, timeout), res, os::Solaris::clear_interrupted);
101 if(res == OS_ERR && errno == EINTR) {
102 if(timeout != -1) {
103 gettimeofday(&t, &aNull);
104 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec /1000;
105 timeout -= newtime - prevtime;
106 if(timeout <= 0)
107 return OS_OK;
108 prevtime = newtime;
109 }
110 } else
111 return res;
112 }
113 }
114
115 inline int hpi::listen(int fd, int count) {
116 if (fd < 0)
117 return OS_ERR;
118
119 return ::listen(fd, count);
120 }
121
122 inline int
123 hpi::connect(int fd, struct sockaddr *him, int len) {
124 do {
125 int _result;
126 INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,
127 os::Solaris::clear_interrupted);
128
129 // Depending on when thread interruption is reset, _result could be
130 // one of two values when errno == EINTR
131
132 if (((_result == OS_INTRPT) || (_result == OS_ERR)) && (errno == EINTR)) {
133 /* restarting a connect() changes its errno semantics */
134 INTERRUPTIBLE(::connect(fd, him, len), _result,
135 os::Solaris::clear_interrupted);
136 /* undo these changes */
137 if (_result == OS_ERR) {
138 if (errno == EALREADY) errno = EINPROGRESS; /* fall through */
139 else if (errno == EISCONN) { errno = 0; return OS_OK; }
140 }
141 }
142 return _result;
143 } while(false);
144 }
145
146 inline int hpi::accept(int fd, struct sockaddr *him, int *len) {
147 if (fd < 0)
148 return OS_ERR;
149 INTERRUPTIBLE_RETURN_INT((int)::accept(fd, him, (socklen_t*) len), os::Solaris::clear_interrupted);
150 }
151
152 inline int hpi::recvfrom(int fd, char *buf, int nBytes, int flags,
153 sockaddr *from, int *fromlen) {
154 //%%note jvm_r11
155 INTERRUPTIBLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, (unsigned int) flags, from, (socklen_t *)fromlen), os::Solaris::clear_interrupted);
156 }
157
158 inline int hpi::sendto(int fd, char *buf, int len, int flags,
159 struct sockaddr *to, int tolen) {
160 //%%note jvm_r11
161 INTERRUPTIBLE_RETURN_INT((int)::sendto(fd, buf, len, (unsigned int) flags, to, tolen),os::Solaris::clear_interrupted);
162 }
163
164 inline int hpi::socket_available(int fd, jint *pbytes) {
165 if (fd < 0)
166 return OS_OK;
167
168 int ret;
169
170 RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret);
171
172 //%% note ioctl can return 0 when successful, JVM_SocketAvailable
173 // is expected to return 0 on failure and 1 on success to the jdk.
174
175 return (ret == OS_ERR) ? 0 : 1;
176 }
177
178
179 /*
180 HPIDECL(socket_shutdown, "socket_shutdown", _socket, SocketShutdown,
181 int, "%d",
182 (int fd, int howto),
183 ("fd = %d, howto = %d", fd, howto),
184 (fd, howto));
185 */
186 inline int hpi::socket_shutdown(int fd, int howto){
187 return ::shutdown(fd, howto);
188 }
189
190 /*
191 HPIDECL(bind, "bind", _socket, Bind,
192 int, "%d",
193 (int fd, struct sockaddr *him, int len),
194 ("fd = %d, him = %p, len = %d",
195 fd, him, len),
196 (fd, him, len));
197 */
198 inline int hpi::bind(int fd, struct sockaddr *him, int len){
199 INTERRUPTIBLE_RETURN_INT_NORESTART(::bind(fd, him, len),os::Solaris::clear_interrupted);
200 }
201
202 /*
203 HPIDECL(get_sock_name, "get_sock_name", _socket, GetSocketName,
204 int, "%d",
205 (int fd, struct sockaddr *him, int *len),
206 ("fd = %d, him = %p, len = %p",
207 fd, him, len),
208 (fd, him, len));
209 */
210 inline int hpi::get_sock_name(int fd, struct sockaddr *him, int *len){
211 return ::getsockname(fd, him, (socklen_t*) len);
212 }
213
214 /*
215 HPIDECL(get_host_name, "get_host_name", _socket, GetHostName, int, "%d",
216 (char *hostname, int namelen),
217 ("hostname = %p, namelen = %d",
218 hostname, namelen),
219 (hostname, namelen));
220 */
221 inline int hpi::get_host_name(char* name, int namelen){
222 return ::gethostname(name, namelen);
223 }
224
225 /*
226 HPIDECL(get_sock_opt, "get_sock_opt", _socket, SocketGetOption, int, "%d",
227 (int fd, int level, int optname, char *optval, int* optlen),
228 ("fd = %d, level = %d, optname = %d, optval = %p, optlen = %p",
229 fd, level, optname, optval, optlen),
230 (fd, level, optname, optval, optlen));
231 */
232 inline int hpi::get_sock_opt(int fd, int level, int optname,
233 char *optval, int* optlen){
234 return ::getsockopt(fd, level, optname, optval, (socklen_t*) optlen);
235 }
236
237 /*
238 HPIDECL(set_sock_opt, "set_sock_opt", _socket, SocketSetOption, int, "%d",
239 (int fd, int level, int optname, const char *optval, int optlen),
240 ("fd = %d, level = %d, optname = %d, optval = %p, optlen = %d",
241 fd, level, optname, optval, optlen),
242 (fd, level, optname, optval, optlen));
243 */
244 inline int hpi::set_sock_opt(int fd, int level, int optname,
245 const char *optval, int optlen){
246 return ::setsockopt(fd, level, optname, optval, optlen);
247 }
248
249 //Reconciliation History
250 // 1.3 98/10/21 18:17:14 hpi_win32.hpp
251 // 1.6 99/06/28 11:01:36 hpi_win32.hpp
252 //End
253
254 #endif // OS_SOLARIS_VM_HPI_SOLARIS_HPP