1 /*
2 * Copyright (c) 2014, 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 #include <errno.h>
27 #include <sys/socket.h>
28 #include <stropts.h>
29 #include <unistd.h>
30
31 /* Support for restartable system calls on Solaris. */
32
33 #define RESTARTABLE_RETURN_INT(_cmd) do { \
34 int _result; \
35 if (1) { \
36 do { \
37 _result = _cmd; \
38 } while((_result == -1) && (errno == EINTR)); \
39 return _result; \
40 } \
41 } while(0)
42
43 int NET_Read(int s, void* buf, size_t len) {
44 RESTARTABLE_RETURN_INT(recv(s, buf, len, 0));
45 }
46
47 int NET_RecvFrom(int s, void *buf, int len, unsigned int flags,
48 struct sockaddr *from, socklen_t *fromlen) {
49 RESTARTABLE_RETURN_INT(recvfrom(s, buf, len, flags, from, fromlen));
50 }
51
52 int NET_ReadV(int s, const struct iovec * vector, int count) {
53 RESTARTABLE_RETURN_INT(readv(s, vector, count));
54 }
55
56 int NET_WriteV(int s, const struct iovec * vector, int count) {
57 RESTARTABLE_RETURN_INT(writev(s, vector, count));
58 }
59
60 int NET_Send(int s, void *msg, int len, unsigned int flags) {
61 RESTARTABLE_RETURN_INT(send(s, msg, len, flags));
62 }
63
64 int NET_SendTo(int s, const void *msg, int len, unsigned int flags,
65 const struct sockaddr *to, int tolen) {
66 RESTARTABLE_RETURN_INT(sendto(s, msg, len, flags, to, tolen));
67 }
68
69 int NET_Connect(int s, struct sockaddr *addr, int addrlen) {
70 RESTARTABLE_RETURN_INT(connect(s, addr, addrlen));
71 }
72
73 int NET_Accept(int s, struct sockaddr *addr, socklen_t *addrlen) {
74 RESTARTABLE_RETURN_INT(accept(s, addr, addrlen));
75 }
76
77 int NET_SocketClose(int fd) {
78 return close(fd);
79 }
80
81 int NET_Dup2(int fd, int fd2) {
82 return dup2(fd, fd2);
83 }
84
85 int NET_Poll(struct pollfd *ufds, unsigned int nfds, int timeout) {
86 RESTARTABLE_RETURN_INT(poll(ufds, nfds, timeout));
87 }
88
89 int NET_Select(int s, fd_set *readfds, fd_set *writefds,
90 fd_set *exceptfds, struct timeval *timeout) {
91 RESTARTABLE_RETURN_INT(select(s, readfds, writefds, exceptfds, timeout));
92 }
93
94 int NET_Timeout(int s, long timeout) {
95 int result;
96 struct timeval t;
97 long prevtime, newtime;
98 struct pollfd pfd;
99 pfd.fd = s;
100 pfd.events = POLLIN;
101
102 if (timeout > 0) {
103 gettimeofday(&t, NULL);
104 prevtime = (t.tv_sec * 1000) + t.tv_usec / 1000;
105 }
106
107 for(;;) {
108 result = poll(&pfd, 1, timeout);
109 if (result < 0 && errno == EINTR) {
110 if (timeout > 0) {
111 gettimeofday(&t, NULL);
112 newtime = (t.tv_sec * 1000) + t.tv_usec /1000;
113 timeout -= newtime - prevtime;
114 if (timeout <= 0)
115 return 0;
116 prevtime = newtime;
117 }
118 } else {
119 return result;
120 }
121 }
122 }
--- EOF ---