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comparison src/os/solaris/vm/hpi_solaris.hpp @ 0:a61af66fc99e jdk7-b24

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author duke
date Sat, 01 Dec 2007 00:00:00 +0000
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1 /*
2 * Copyright 1998-2007 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any 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 // As both poll and select can be interrupted by signals, we have to be
75 // prepared to restart the system call after updating the timeout, unless
76 // a poll() is done with timeout == -1, in which case we repeat with this
77 // "wait forever" value.
78
79 inline int hpi::timeout(int fd, long timeout) {
80 int res;
81 struct timeval t;
82 julong prevtime, newtime;
83 static const char* aNull = 0;
84
85 struct pollfd pfd;
86 pfd.fd = fd;
87 pfd.events = POLLIN;
88
89 gettimeofday(&t, &aNull);
90 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
91
92 for(;;) {
93 INTERRUPTIBLE_NORESTART(::poll(&pfd, 1, timeout), res, os::Solaris::clear_interrupted);
94 if(res == OS_ERR && errno == EINTR) {
95 if(timeout != -1) {
96 gettimeofday(&t, &aNull);
97 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec /1000;
98 timeout -= newtime - prevtime;
99 if(timeout <= 0)
100 return OS_OK;
101 prevtime = newtime;
102 }
103 } else
104 return res;
105 }
106 }
107
108 inline int hpi::listen(int fd, int count) {
109 if (fd < 0)
110 return OS_ERR;
111
112 return ::listen(fd, count);
113 }
114
115 inline int
116 hpi::connect(int fd, struct sockaddr *him, int len) {
117 do {
118 int _result;
119 INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,
120 os::Solaris::clear_interrupted);
121
122 // Depending on when thread interruption is reset, _result could be
123 // one of two values when errno == EINTR
124
125 if (((_result == OS_INTRPT) || (_result == OS_ERR)) && (errno == EINTR)) {
126 /* restarting a connect() changes its errno semantics */
127 INTERRUPTIBLE(::connect(fd, him, len), _result,
128 os::Solaris::clear_interrupted);
129 /* undo these changes */
130 if (_result == OS_ERR) {
131 if (errno == EALREADY) errno = EINPROGRESS; /* fall through */
132 else if (errno == EISCONN) { errno = 0; return OS_OK; }
133 }
134 }
135 return _result;
136 } while(false);
137 }
138
139 inline int hpi::accept(int fd, struct sockaddr *him, int *len) {
140 if (fd < 0)
141 return OS_ERR;
142 INTERRUPTIBLE_RETURN_INT((int)::accept(fd, him, (socklen_t*) len), os::Solaris::clear_interrupted);
143 }
144
145 inline int hpi::recvfrom(int fd, char *buf, int nBytes, int flags,
146 sockaddr *from, int *fromlen) {
147 //%%note jvm_r11
148 INTERRUPTIBLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, (unsigned int) flags, from, (socklen_t *)fromlen), os::Solaris::clear_interrupted);
149 }
150
151 inline int hpi::sendto(int fd, char *buf, int len, int flags,
152 struct sockaddr *to, int tolen) {
153 //%%note jvm_r11
154 INTERRUPTIBLE_RETURN_INT((int)::sendto(fd, buf, len, (unsigned int) flags, to, tolen),os::Solaris::clear_interrupted);
155 }
156
157 inline int hpi::socket_available(int fd, jint *pbytes) {
158 if (fd < 0)
159 return OS_OK;
160
161 int ret;
162
163 RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret);
164
165 //%% note ioctl can return 0 when successful, JVM_SocketAvailable
166 // is expected to return 0 on failure and 1 on success to the jdk.
167
168 return (ret == OS_ERR) ? 0 : 1;
169 }
170
171
172 /*
173 HPIDECL(socket_shutdown, "socket_shutdown", _socket, SocketShutdown,
174 int, "%d",
175 (int fd, int howto),
176 ("fd = %d, howto = %d", fd, howto),
177 (fd, howto));
178 */
179 inline int hpi::socket_shutdown(int fd, int howto){
180 return ::shutdown(fd, howto);
181 }
182
183 /*
184 HPIDECL(bind, "bind", _socket, Bind,
185 int, "%d",
186 (int fd, struct sockaddr *him, int len),
187 ("fd = %d, him = %p, len = %d",
188 fd, him, len),
189 (fd, him, len));
190 */
191 inline int hpi::bind(int fd, struct sockaddr *him, int len){
192 INTERRUPTIBLE_RETURN_INT_NORESTART(::bind(fd, him, len),os::Solaris::clear_interrupted);
193 }
194
195 /*
196 HPIDECL(get_sock_name, "get_sock_name", _socket, GetSocketName,
197 int, "%d",
198 (int fd, struct sockaddr *him, int *len),
199 ("fd = %d, him = %p, len = %p",
200 fd, him, len),
201 (fd, him, len));
202 */
203 inline int hpi::get_sock_name(int fd, struct sockaddr *him, int *len){
204 return ::getsockname(fd, him, (socklen_t*) len);
205 }
206
207 /*
208 HPIDECL(get_host_name, "get_host_name", _socket, GetHostName, int, "%d",
209 (char *hostname, int namelen),
210 ("hostname = %p, namelen = %d",
211 hostname, namelen),
212 (hostname, namelen));
213 */
214 inline int hpi::get_host_name(char* name, int namelen){
215 return ::gethostname(name, namelen);
216 }
217
218 /*
219 HPIDECL(get_sock_opt, "get_sock_opt", _socket, SocketGetOption, int, "%d",
220 (int fd, int level, int optname, char *optval, int* optlen),
221 ("fd = %d, level = %d, optname = %d, optval = %p, optlen = %p",
222 fd, level, optname, optval, optlen),
223 (fd, level, optname, optval, optlen));
224 */
225 inline int hpi::get_sock_opt(int fd, int level, int optname,
226 char *optval, int* optlen){
227 return ::getsockopt(fd, level, optname, optval, (socklen_t*) optlen);
228 }
229
230 /*
231 HPIDECL(set_sock_opt, "set_sock_opt", _socket, SocketSetOption, int, "%d",
232 (int fd, int level, int optname, const char *optval, int optlen),
233 ("fd = %d, level = %d, optname = %d, optval = %p, optlen = %d",
234 fd, level, optname, optval, optlen),
235 (fd, level, optname, optval, optlen));
236 */
237 inline int hpi::set_sock_opt(int fd, int level, int optname,
238 const char *optval, int optlen){
239 return ::setsockopt(fd, level, optname, optval, optlen);
240 }
241
242 //Reconciliation History
243 // 1.3 98/10/21 18:17:14 hpi_win32.hpp
244 // 1.6 99/06/28 11:01:36 hpi_win32.hpp
245 //End