1 /*
2 * Copyright (c) 1998, 2007, 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 //
26 // Parts of the HPI interface for which the HotSparc does not use the
27 // HPI (because the interruptible IO mechanims used are different).
28 //
29
30 #include <sys/socket.h>
31 #include <sys/poll.h>
32 #include <sys/filio.h>
33 #include <unistd.h>
34 #include <netdb.h>
35 #include <setjmp.h>
36
37 // HPI_FileInterface
38
39 // Many system calls can be interrupted by signals and must be restarted.
40 // Restart support was added without disturbing the extent of thread
41 // interruption support.
42
43 inline int hpi::close(int fd) {
44 RESTARTABLE_RETURN_INT(::close(fd));
45 }
46
47 inline size_t hpi::read(int fd, void *buf, unsigned int nBytes) {
48 INTERRUPTIBLE_RETURN_INT(::read(fd, buf, nBytes), os::Solaris::clear_interrupted);
49 }
50
51 inline size_t hpi::write(int fd, const void *buf, unsigned int nBytes) {
52 INTERRUPTIBLE_RETURN_INT(::write(fd, buf, nBytes), os::Solaris::clear_interrupted);
53 }
54
55
56 // HPI_SocketInterface
57
58 inline int hpi::socket_close(int fd) {
59 RESTARTABLE_RETURN_INT(::close(fd));
60 }
61
62 inline int hpi::socket(int domain, int type, int protocol) {
63 return ::socket(domain, type, protocol);
64 }
65
66 inline int hpi::recv(int fd, char *buf, int nBytes, int flags) {
67 INTERRUPTIBLE_RETURN_INT(::recv(fd, buf, nBytes, flags), os::Solaris::clear_interrupted);
68 }
69
70 inline int hpi::send(int fd, char *buf, int nBytes, int flags) {
71 INTERRUPTIBLE_RETURN_INT(::send(fd, buf, nBytes, flags), os::Solaris::clear_interrupted);
72 }
73
74 inline int hpi::raw_send(int fd, char *buf, int nBytes, int flags) {
75 RESTARTABLE_RETURN_INT(::send(fd, buf, nBytes, flags));
76 }
77
78 // As both poll and select can be interrupted by signals, we have to be
79 // prepared to restart the system call after updating the timeout, unless
80 // a poll() is done with timeout == -1, in which case we repeat with this
81 // "wait forever" value.
82
83 inline int hpi::timeout(int fd, long timeout) {
84 int res;
85 struct timeval t;
86 julong prevtime, newtime;
87 static const char* aNull = 0;
88
89 struct pollfd pfd;
90 pfd.fd = fd;
91 pfd.events = POLLIN;
92
93 gettimeofday(&t, &aNull);
94 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
95
96 for(;;) {
97 INTERRUPTIBLE_NORESTART(::poll(&pfd, 1, timeout), res, os::Solaris::clear_interrupted);
98 if(res == OS_ERR && errno == EINTR) {
99 if(timeout != -1) {
100 gettimeofday(&t, &aNull);
101 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec /1000;
102 timeout -= newtime - prevtime;
103 if(timeout <= 0)
104 return OS_OK;
105 prevtime = newtime;
106 }
107 } else
108 return res;
109 }
110 }
111
112 inline int hpi::listen(int fd, int count) {
113 if (fd < 0)
114 return OS_ERR;
115
116 return ::listen(fd, count);
117 }
118
119 inline int
120 hpi::connect(int fd, struct sockaddr *him, int len) {
121 do {
122 int _result;
123 INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,
124 os::Solaris::clear_interrupted);
125
126 // Depending on when thread interruption is reset, _result could be
127 // one of two values when errno == EINTR
128
129 if (((_result == OS_INTRPT) || (_result == OS_ERR)) && (errno == EINTR)) {
130 /* restarting a connect() changes its errno semantics */
131 INTERRUPTIBLE(::connect(fd, him, len), _result,
132 os::Solaris::clear_interrupted);
133 /* undo these changes */
134 if (_result == OS_ERR) {
135 if (errno == EALREADY) errno = EINPROGRESS; /* fall through */
136 else if (errno == EISCONN) { errno = 0; return OS_OK; }
137 }
138 }
139 return _result;
140 } while(false);
141 }
142
143 inline int hpi::accept(int fd, struct sockaddr *him, int *len) {
144 if (fd < 0)
145 return OS_ERR;
146 INTERRUPTIBLE_RETURN_INT((int)::accept(fd, him, (socklen_t*) len), os::Solaris::clear_interrupted);
147 }
148
149 inline int hpi::recvfrom(int fd, char *buf, int nBytes, int flags,
150 sockaddr *from, int *fromlen) {
151 //%%note jvm_r11
152 INTERRUPTIBLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, (unsigned int) flags, from, (socklen_t *)fromlen), os::Solaris::clear_interrupted);
153 }
154
155 inline int hpi::sendto(int fd, char *buf, int len, int flags,
156 struct sockaddr *to, int tolen) {
157 //%%note jvm_r11
158 INTERRUPTIBLE_RETURN_INT((int)::sendto(fd, buf, len, (unsigned int) flags, to, tolen),os::Solaris::clear_interrupted);
159 }
160
161 inline int hpi::socket_available(int fd, jint *pbytes) {
162 if (fd < 0)
163 return OS_OK;
164
165 int ret;
166
167 RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret);
168
169 //%% note ioctl can return 0 when successful, JVM_SocketAvailable
170 // is expected to return 0 on failure and 1 on success to the jdk.
171
172 return (ret == OS_ERR) ? 0 : 1;
173 }
174
175
176 /*
177 HPIDECL(socket_shutdown, "socket_shutdown", _socket, SocketShutdown,
178 int, "%d",
179 (int fd, int howto),
180 ("fd = %d, howto = %d", fd, howto),
181 (fd, howto));
182 */
183 inline int hpi::socket_shutdown(int fd, int howto){
184 return ::shutdown(fd, howto);
185 }
186
187 /*
188 HPIDECL(bind, "bind", _socket, Bind,
189 int, "%d",
190 (int fd, struct sockaddr *him, int len),
191 ("fd = %d, him = %p, len = %d",
192 fd, him, len),
193 (fd, him, len));
194 */
195 inline int hpi::bind(int fd, struct sockaddr *him, int len){
196 INTERRUPTIBLE_RETURN_INT_NORESTART(::bind(fd, him, len),os::Solaris::clear_interrupted);
197 }
198
199 /*
200 HPIDECL(get_sock_name, "get_sock_name", _socket, GetSocketName,
201 int, "%d",
202 (int fd, struct sockaddr *him, int *len),
203 ("fd = %d, him = %p, len = %p",
204 fd, him, len),
205 (fd, him, len));
206 */
207 inline int hpi::get_sock_name(int fd, struct sockaddr *him, int *len){
208 return ::getsockname(fd, him, (socklen_t*) len);
209 }
210
211 /*
212 HPIDECL(get_host_name, "get_host_name", _socket, GetHostName, int, "%d",
213 (char *hostname, int namelen),
214 ("hostname = %p, namelen = %d",
215 hostname, namelen),
216 (hostname, namelen));
217 */
218 inline int hpi::get_host_name(char* name, int namelen){
219 return ::gethostname(name, namelen);
220 }
221
222 /*
223 HPIDECL(get_sock_opt, "get_sock_opt", _socket, SocketGetOption, int, "%d",
224 (int fd, int level, int optname, char *optval, int* optlen),
225 ("fd = %d, level = %d, optname = %d, optval = %p, optlen = %p",
226 fd, level, optname, optval, optlen),
227 (fd, level, optname, optval, optlen));
228 */
229 inline int hpi::get_sock_opt(int fd, int level, int optname,
230 char *optval, int* optlen){
231 return ::getsockopt(fd, level, optname, optval, (socklen_t*) optlen);
232 }
233
234 /*
235 HPIDECL(set_sock_opt, "set_sock_opt", _socket, SocketSetOption, int, "%d",
236 (int fd, int level, int optname, const char *optval, int optlen),
237 ("fd = %d, level = %d, optname = %d, optval = %p, optlen = %d",
238 fd, level, optname, optval, optlen),
239 (fd, level, optname, optval, optlen));
240 */
241 inline int hpi::set_sock_opt(int fd, int level, int optname,
242 const char *optval, int optlen){
243 return ::setsockopt(fd, level, optname, optval, optlen);
244 }
245
246 //Reconciliation History
247 // 1.3 98/10/21 18:17:14 hpi_win32.hpp
248 // 1.6 99/06/28 11:01:36 hpi_win32.hpp
249 //End