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1 /*
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2 * Copyright 1998-2007 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 //
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26 // Parts of the HPI interface for which the HotSparc does not use the
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27 // HPI (because the interruptible IO mechanims used are different).
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28 //
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29
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30 #include <sys/socket.h>
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31 #include <sys/poll.h>
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32 #include <sys/filio.h>
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33 #include <unistd.h>
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34 #include <netdb.h>
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35 #include <setjmp.h>
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36
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37 // HPI_FileInterface
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38
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39 // Many system calls can be interrupted by signals and must be restarted.
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40 // Restart support was added without disturbing the extent of thread
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41 // interruption support.
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42
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43 inline int hpi::close(int fd) {
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44 RESTARTABLE_RETURN_INT(::close(fd));
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45 }
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46
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47 inline size_t hpi::read(int fd, void *buf, unsigned int nBytes) {
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48 INTERRUPTIBLE_RETURN_INT(::read(fd, buf, nBytes), os::Solaris::clear_interrupted);
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49 }
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50
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51 inline size_t hpi::write(int fd, const void *buf, unsigned int nBytes) {
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52 INTERRUPTIBLE_RETURN_INT(::write(fd, buf, nBytes), os::Solaris::clear_interrupted);
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53 }
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54
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55
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56 // HPI_SocketInterface
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57
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58 inline int hpi::socket_close(int fd) {
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59 RESTARTABLE_RETURN_INT(::close(fd));
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60 }
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61
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62 inline int hpi::socket(int domain, int type, int protocol) {
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63 return ::socket(domain, type, protocol);
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64 }
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65
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66 inline int hpi::recv(int fd, char *buf, int nBytes, int flags) {
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67 INTERRUPTIBLE_RETURN_INT(::recv(fd, buf, nBytes, flags), os::Solaris::clear_interrupted);
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68 }
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69
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70 inline int hpi::send(int fd, char *buf, int nBytes, int flags) {
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71 INTERRUPTIBLE_RETURN_INT(::send(fd, buf, nBytes, flags), os::Solaris::clear_interrupted);
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72 }
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73
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74 // As both poll and select can be interrupted by signals, we have to be
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75 // prepared to restart the system call after updating the timeout, unless
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76 // a poll() is done with timeout == -1, in which case we repeat with this
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77 // "wait forever" value.
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78
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79 inline int hpi::timeout(int fd, long timeout) {
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80 int res;
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81 struct timeval t;
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82 julong prevtime, newtime;
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83 static const char* aNull = 0;
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84
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85 struct pollfd pfd;
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86 pfd.fd = fd;
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87 pfd.events = POLLIN;
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88
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89 gettimeofday(&t, &aNull);
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90 prevtime = ((julong)t.tv_sec * 1000) + t.tv_usec / 1000;
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91
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92 for(;;) {
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93 INTERRUPTIBLE_NORESTART(::poll(&pfd, 1, timeout), res, os::Solaris::clear_interrupted);
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94 if(res == OS_ERR && errno == EINTR) {
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95 if(timeout != -1) {
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96 gettimeofday(&t, &aNull);
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97 newtime = ((julong)t.tv_sec * 1000) + t.tv_usec /1000;
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98 timeout -= newtime - prevtime;
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99 if(timeout <= 0)
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100 return OS_OK;
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101 prevtime = newtime;
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102 }
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103 } else
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104 return res;
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105 }
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106 }
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107
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108 inline int hpi::listen(int fd, int count) {
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109 if (fd < 0)
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110 return OS_ERR;
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111
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112 return ::listen(fd, count);
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113 }
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114
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115 inline int
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116 hpi::connect(int fd, struct sockaddr *him, int len) {
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117 do {
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118 int _result;
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119 INTERRUPTIBLE_NORESTART(::connect(fd, him, len), _result,
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120 os::Solaris::clear_interrupted);
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121
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122 // Depending on when thread interruption is reset, _result could be
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123 // one of two values when errno == EINTR
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124
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125 if (((_result == OS_INTRPT) || (_result == OS_ERR)) && (errno == EINTR)) {
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126 /* restarting a connect() changes its errno semantics */
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127 INTERRUPTIBLE(::connect(fd, him, len), _result,
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128 os::Solaris::clear_interrupted);
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129 /* undo these changes */
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130 if (_result == OS_ERR) {
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131 if (errno == EALREADY) errno = EINPROGRESS; /* fall through */
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132 else if (errno == EISCONN) { errno = 0; return OS_OK; }
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133 }
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134 }
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135 return _result;
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136 } while(false);
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137 }
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138
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139 inline int hpi::accept(int fd, struct sockaddr *him, int *len) {
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140 if (fd < 0)
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141 return OS_ERR;
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142 INTERRUPTIBLE_RETURN_INT((int)::accept(fd, him, (socklen_t*) len), os::Solaris::clear_interrupted);
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143 }
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144
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145 inline int hpi::recvfrom(int fd, char *buf, int nBytes, int flags,
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146 sockaddr *from, int *fromlen) {
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147 //%%note jvm_r11
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148 INTERRUPTIBLE_RETURN_INT((int)::recvfrom(fd, buf, nBytes, (unsigned int) flags, from, (socklen_t *)fromlen), os::Solaris::clear_interrupted);
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149 }
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150
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151 inline int hpi::sendto(int fd, char *buf, int len, int flags,
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152 struct sockaddr *to, int tolen) {
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153 //%%note jvm_r11
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154 INTERRUPTIBLE_RETURN_INT((int)::sendto(fd, buf, len, (unsigned int) flags, to, tolen),os::Solaris::clear_interrupted);
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155 }
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156
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157 inline int hpi::socket_available(int fd, jint *pbytes) {
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158 if (fd < 0)
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159 return OS_OK;
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160
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161 int ret;
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162
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163 RESTARTABLE(::ioctl(fd, FIONREAD, pbytes), ret);
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164
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165 //%% note ioctl can return 0 when successful, JVM_SocketAvailable
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166 // is expected to return 0 on failure and 1 on success to the jdk.
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167
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168 return (ret == OS_ERR) ? 0 : 1;
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169 }
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170
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171
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172 /*
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173 HPIDECL(socket_shutdown, "socket_shutdown", _socket, SocketShutdown,
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174 int, "%d",
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175 (int fd, int howto),
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176 ("fd = %d, howto = %d", fd, howto),
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177 (fd, howto));
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178 */
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179 inline int hpi::socket_shutdown(int fd, int howto){
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180 return ::shutdown(fd, howto);
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181 }
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182
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183 /*
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184 HPIDECL(bind, "bind", _socket, Bind,
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185 int, "%d",
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186 (int fd, struct sockaddr *him, int len),
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187 ("fd = %d, him = %p, len = %d",
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188 fd, him, len),
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189 (fd, him, len));
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190 */
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191 inline int hpi::bind(int fd, struct sockaddr *him, int len){
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192 INTERRUPTIBLE_RETURN_INT_NORESTART(::bind(fd, him, len),os::Solaris::clear_interrupted);
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193 }
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194
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195 /*
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196 HPIDECL(get_sock_name, "get_sock_name", _socket, GetSocketName,
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197 int, "%d",
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198 (int fd, struct sockaddr *him, int *len),
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199 ("fd = %d, him = %p, len = %p",
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200 fd, him, len),
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201 (fd, him, len));
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202 */
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203 inline int hpi::get_sock_name(int fd, struct sockaddr *him, int *len){
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204 return ::getsockname(fd, him, (socklen_t*) len);
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205 }
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206
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207 /*
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208 HPIDECL(get_host_name, "get_host_name", _socket, GetHostName, int, "%d",
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209 (char *hostname, int namelen),
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210 ("hostname = %p, namelen = %d",
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211 hostname, namelen),
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212 (hostname, namelen));
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213 */
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214 inline int hpi::get_host_name(char* name, int namelen){
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215 return ::gethostname(name, namelen);
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216 }
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217
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218 /*
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219 HPIDECL(get_sock_opt, "get_sock_opt", _socket, SocketGetOption, int, "%d",
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220 (int fd, int level, int optname, char *optval, int* optlen),
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221 ("fd = %d, level = %d, optname = %d, optval = %p, optlen = %p",
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222 fd, level, optname, optval, optlen),
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223 (fd, level, optname, optval, optlen));
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224 */
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225 inline int hpi::get_sock_opt(int fd, int level, int optname,
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226 char *optval, int* optlen){
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227 return ::getsockopt(fd, level, optname, optval, (socklen_t*) optlen);
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228 }
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229
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230 /*
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231 HPIDECL(set_sock_opt, "set_sock_opt", _socket, SocketSetOption, int, "%d",
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232 (int fd, int level, int optname, const char *optval, int optlen),
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233 ("fd = %d, level = %d, optname = %d, optval = %p, optlen = %d",
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234 fd, level, optname, optval, optlen),
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235 (fd, level, optname, optval, optlen));
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236 */
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237 inline int hpi::set_sock_opt(int fd, int level, int optname,
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238 const char *optval, int optlen){
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239 return ::setsockopt(fd, level, optname, optval, optlen);
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240 }
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241
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242 //Reconciliation History
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243 // 1.3 98/10/21 18:17:14 hpi_win32.hpp
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244 // 1.6 99/06/28 11:01:36 hpi_win32.hpp
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245 //End
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