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annotate packages/net/tcpip/current/tests/multi_lo_select.c @ 115:6ed91473a1cd ecos-sw-2000-08-21

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Merge from eCos master repository on 2000-08-21-22:40:54-BST
author jlarmour
date Fri, 25 Aug 2000 17:32:38 +0000
parents 02ea4320376c
children d60da272beeb
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1 //==========================================================================
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2 //
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3 // tests/multi_lo_test.c
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4 //
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5 // Multiple selects-at-one-time test, using lo for portability.
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6 //
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7 //==========================================================================
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8 //####COPYRIGHTBEGIN####
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9 //
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10 // -------------------------------------------
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11 // The contents of this file are subject to the Red Hat eCos Public License
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12 // Version 1.1 (the "License"); you may not use this file except in
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13 // compliance with the License. You may obtain a copy of the License at
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14 // http://www.redhat.com/
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15 //
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16 // Software distributed under the License is distributed on an "AS IS"
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17 // basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
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18 // License for the specific language governing rights and limitations under
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19 // the License.
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20 //
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21 // The Original Code is eCos - Embedded Configurable Operating System,
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22 // released September 30, 1998.
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23 //
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24 // The Initial Developer of the Original Code is Red Hat.
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25 // Portions created by Red Hat are
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26 // Copyright (C) 1998, 1999, 2000 Red Hat, Inc.
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27 // All Rights Reserved.
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28 // -------------------------------------------
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29 //
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30 //####COPYRIGHTEND####
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31 //####BSDCOPYRIGHTBEGIN####
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32 //
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33 // -------------------------------------------
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34 //
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35 // Portions of this software may have been derived from OpenBSD or other sources
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36 // and are covered by the appropriate copyright disclaimers included herein.
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37 //
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38 // -------------------------------------------
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39 //
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40 //####BSDCOPYRIGHTEND####
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41 //==========================================================================
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42 //#####DESCRIPTIONBEGIN####
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43 //
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44 // Author(s): sorin@netappi.com, hmt
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45 // Contributors: gthomas,sorin@netappi.com
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46 // Date: 2000-05-24
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47 // Description:
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48 //
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49 // This test is to test that the internal producer operation to select
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50 // truly has broadcast semantics; there was a bug in there whereby it
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51 // doesn't, so events get lost and/or the wrong thread is awakened.
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52 //
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53 // We need to create N threads selecting on different sockets
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54 // (different ports) (including one or two selecting on several
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55 // sockets) and have a further thread or threads which send data to
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56 // the those sockets in an order "random" with respect to the order in
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57 // which the N selectors entered the wait, and their thread
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58 // priorities.
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59 //
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60 // If this all works, then we know that select always wakes the right
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61 // thread in the right order. I think...
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62 //
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63 // I think 10 threads 0-9 where #2,#3,#6,#7 wait for multiple threads
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64 // will do it. #0-4 will be prio HI, #5-9 will be prio LO. Sender
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65 // thread A at prio MID will send to sockets 1,3,5,7,9. Sender thread
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66 // B at prio LOWEST will send to sockets 0,2,4,6,8.
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67 //
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68 // Each sender thread will wait for a different semaphore signal
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69 // before doing their next send, thus confirming correct ordering.
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70 // Two common semaphores will also be signalled, one when a send
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71 // occurs, the other when a recv happens.
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72 //
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73 // The master thread will start off VERYHIGHPRI, then drop after
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74 // starting all the others, to VERYLOW... when it next runs, those
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75 // common semaphores should both have value 10 == NLISTENERS.
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76 //
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77 //
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78 //#####DESCRIPTIONEND#####
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79 //
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80 //==========================================================================
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81
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82 #include <network.h>
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83
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84 #include <cyg/infra/testcase.h>
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85
115
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86 #ifndef CYGPKG_LIBC_STDIO
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87 #define perror(s) diag_printf(#s ": %s\n", strerror(errno))
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88 #endif
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89
112
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90 #define SOURCE_PORT1 9900
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91 #define SOURCE_PORT2 9800 // for those who listen to multiple ports
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92 #define SOURCE_PORT3 9700 // for the dummy consumers of events
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93
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94 #define PRIO_DUMMY 4 // Really high, so they're always right back there
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95
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96 #define PRIO_LISTENER_HI 10
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97 #define PRIO_LISTENER_LO 15
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98
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99 #define PRIO_SENDER_MID 12
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100 #define PRIO_SENDER_LOW 17
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101
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102 #define PRIO_MASTERHIGH 3
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103 #define PRIO_MASTERLOW 25
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104
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105 #ifndef CYGPKG_IO_FILEIO
112
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106 #if CYGPKG_IO_NFILE > 30
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107 #define NLISTENERS 10
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108 #else
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109 // fewer threads if not many sockets available
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110 #define NLISTENERS (CYGPKG_IO_NFILE/3)
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111 #endif
115
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112 #else
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113 #if CYGNUM_FILEIO_NFD > 30
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114 #define NLISTENERS 10
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115 #else
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116 // fewer threads if not many sockets available
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117 #define NLISTENERS (CYGNUM_FILEIO_NFD/3)
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118 #endif
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119 #endif
112
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120
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121 #define NDUMMIES 10
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122
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123 #define NSENDERS 2
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124
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125 #define NUM_BUF NLISTENERS
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126 #define MAX_BUF 100
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127
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128 // buffers for receiving into:
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129 static unsigned char data_buf1[NUM_BUF][MAX_BUF];
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130
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131 static unsigned char data_buf_write1[]="Client is alive";
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132
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133 #define STACK_SIZE (CYGNUM_HAL_STACK_SIZE_TYPICAL)
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134 #define MASTER_STACK_SIZE (CYGNUM_HAL_STACK_SIZE_TYPICAL + 0x1000)
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135
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136 static char stack_master[MASTER_STACK_SIZE];
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137 static cyg_thread master_thread_data;
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138 static cyg_handle_t master_thread_handle;
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139
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140 static char stack_dummy[NDUMMIES][STACK_SIZE];
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141 static cyg_thread dummy_thread_data[NDUMMIES];
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142 static cyg_handle_t dummy_thread_handle[NDUMMIES];
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143
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144 static char stack_listener[NLISTENERS][STACK_SIZE];
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145 static cyg_thread listener_thread_data[NLISTENERS];
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146 static cyg_handle_t listener_thread_handle[NLISTENERS];
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147
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148 static char stack_sender[NSENDERS][STACK_SIZE];
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149 static cyg_thread sender_thread_data[NSENDERS];
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150 static cyg_handle_t sender_thread_handle[NSENDERS];
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151
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152 static cyg_sem_t listen_sema[NLISTENERS];
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153
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154 static cyg_sem_t send_sema;
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155 static cyg_sem_t recv_sema;
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156
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157 static cyg_thread_entry_t master;
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158 static cyg_thread_entry_t listener;
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159 static cyg_thread_entry_t sender;
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160
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161 // ------------------------------------------------------------------------
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162
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163 void
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164 pexit(char *s)
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165 {
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166 CYG_TEST_FAIL_FINISH( s );
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167 }
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168
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169
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170 #ifndef max
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171 #define max(a,b) (((a) > (b)) ? (a) : (b))
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172 #endif
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173
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174 // ------------------------------------------------------------------------
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175
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176 void dummy( cyg_addrword_t which )
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177 {
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178 // Share the same socket... we appear to run out otherwise.
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179 static int s_s1 = -1;
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180 static struct sockaddr_in local;
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181
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182 // locals...
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183 fd_set in_fds;
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184 int num;
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185
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186 CYG_TEST_CHECK( 0 <= which, "which under" );
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187 CYG_TEST_CHECK( NDUMMIES > which, "which over" );
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188
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189 diag_printf( "Dummy %d alive\n", which );
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190
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191 if ( s_s1 < 0 ) {
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192 s_s1 = socket(AF_INET, SOCK_STREAM, 0);
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193 if (s_s1 < 0) {
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194 pexit("stream socket 1");
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195 }
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196 memset(&local, 0, sizeof(local));
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197 local.sin_family = AF_INET;
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198 local.sin_len = sizeof(local);
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199 local.sin_port = ntohs(SOURCE_PORT3 + which);
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200 local.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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201 if(bind(s_s1, (struct sockaddr *) &local, sizeof(local)) < 0) {
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202 pexit("dummy bind /source_1/ error");
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203 }
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204 listen(s_s1, SOMAXCONN);
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205 }
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206
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207 while (true) {
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208 FD_ZERO(&in_fds);
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209 FD_SET(s_s1, &in_fds);
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210 num = select( s_s1+1, &in_fds,0,0,0);
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211
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212 if (FD_ISSET(s_s1,&in_fds)) {
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213 CYG_TEST_FAIL( "Activity on dummy port!" );
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214 }
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215 } /* while (true) */
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216 }
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217
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218 // ------------------------------------------------------------------------
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219
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220 void listener( cyg_addrword_t which )
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221 {
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222 int s_s1 = -1, e_s1 = 0, s_s2 = -1, e_s2 = 0;
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223 struct sockaddr_in e_s1_addr,e_s2_addr,local;
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224 fd_set in_fds;
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225 int len;
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226 int num;
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227
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228 // do we select on multiple sources?
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229 int dual = (3 == (which & 3)) || (2 == (which & 3));
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230 // then which is 2,3,6,7 so set up a 2nd listener
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231
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232 CYG_TEST_CHECK( 0 <= which, "which under" );
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233 CYG_TEST_CHECK( NLISTENERS > which, "which over" );
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234
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235 diag_printf( "Listener %d alive [%s]\n", which, dual ? "dual" : "single" );
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236
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237 s_s1 = socket(AF_INET, SOCK_STREAM, 0);
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238 if (s_s1 < 0) {
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239 pexit("stream socket 1");
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240 }
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241 memset(&local, 0, sizeof(local));
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242 local.sin_family = AF_INET;
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243 local.sin_len = sizeof(local);
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244 local.sin_port = ntohs(SOURCE_PORT1 + which);
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245 local.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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246 if(bind(s_s1, (struct sockaddr *) &local, sizeof(local)) < 0) {
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247 pexit("bind /source_1/ error");
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248 }
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249 listen(s_s1, SOMAXCONN);
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250
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251 if ( dual ) {
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252 s_s2 = socket(AF_INET, SOCK_STREAM, 0);
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253 if (s_s2 < 0) {
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254 pexit("stream socket 2");
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255 }
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256 memset(&local, 0, sizeof(local));
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257 local.sin_family = AF_INET;
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258 local.sin_len = sizeof(local);
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259 local.sin_port = ntohs(SOURCE_PORT2 + which);
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260 local.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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261 if(bind(s_s2, (struct sockaddr *) &local, sizeof(local)) < 0) {
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262 pexit("bind /source_2/ error");
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263 }
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264 listen(s_s2, SOMAXCONN);
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265 }
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266
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267 while (true) {
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268 FD_ZERO(&in_fds);
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269 FD_SET(s_s1, &in_fds);
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270 if ( dual )
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271 FD_SET(s_s2, &in_fds);
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272 num = select ( max(s_s1,s_s2)+1, &in_fds,0,0,0);
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273
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274 if (FD_ISSET(s_s1,&in_fds)) {
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275 len = sizeof(e_s1_addr);
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276 if ((e_s1 = accept(s_s1,(struct sockaddr *)&e_s1_addr,&len))<0) {
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277 pexit("accept /source_1/");
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278 }
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279 diag_printf("TCP SERVER connection from %s: %d\n",
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280 inet_ntoa(e_s1_addr.sin_addr),ntohs(e_s1_addr.sin_port));
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281 }
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282
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283 if ( dual ) {
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284 if (FD_ISSET(s_s2,&in_fds)) {
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285 len = sizeof(e_s2_addr);
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286 if ((e_s2 = accept(s_s2,(struct sockaddr *)&e_s2_addr,&len))<0) {
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287 pexit("accept /source_2/");
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288 }
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289 diag_printf("TCP SERVER connection from %s: %d\n",
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290 inet_ntoa(e_s2_addr.sin_addr), ntohs(e_s2_addr.sin_port));
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291 }
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292 }
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293 if ((e_s1 != 0) || ( e_s2 != 0)) {
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294 break;
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295 }
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296 } /* while (true) */
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297
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298 CYG_TEST_CHECK( 0 != e_s1, "No connection made on s1!" );
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299
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300 if ((len = read(e_s1, data_buf1[which], MAX_BUF)) < 0 ) {
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301 perror("I/O error s1");
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302 CYG_TEST_FAIL( "Read s1 failed" );
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303 }
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304 diag_printf("Listener %d: %s\n", which, data_buf1[which]);
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305
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306 close( s_s1 );
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307 if ( dual )
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308 close( s_s2 );
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309 if ( 0 != e_s1 )
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310 close ( e_s1 );
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311 if ( 0 != e_s2 )
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312 close ( e_s2 );
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313
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314 cyg_semaphore_post( &listen_sema[which] ); // Verify that I was here
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315 cyg_semaphore_post( &recv_sema ); // Count receptions
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316
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317 cyg_thread_exit(); // explicitly
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318 }
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319
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320 // ------------------------------------------------------------------------
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321 static void sender( cyg_addrword_t which ) // which means which set (odd/even) here...
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322 {
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323 int s_source;
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324 struct sockaddr_in local;
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325 int len;
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326
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327 diag_printf("client %d [%s] :started\n", which, (which & 1) ? "odd" : "even" );
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328
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329 for ( /* which as is */; which < NLISTENERS; which += 2 ) {
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330
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331 s_source = socket(AF_INET, SOCK_STREAM, 0);
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332 if (s_source < 0) {
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333 pexit("stream socket");
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334 }
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335 memset(&local, 0, sizeof(local));
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336 local.sin_family = AF_INET;
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337 local.sin_port = htons( SOURCE_PORT1 + which );
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338 local.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
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339
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340 if (connect(s_source, (struct sockaddr *)&local, sizeof(local)) < 0) {
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341 pexit("Can't connect to target");
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342 }
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343
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344 if ((len = write(s_source,data_buf_write1,sizeof(data_buf_write1) )) < 0) {
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345 CYG_TEST_FAIL_FINISH("Error writing buffer");
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346 }
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347 cyg_semaphore_wait( &listen_sema[which] ); // wait for the appropriate semaphore "reply"
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348 cyg_semaphore_post( &send_sema ); // count up successful sends
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349
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350 close ( s_source );
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351 }
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352 cyg_thread_exit(); // explicitly
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353 }
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354
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355
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356 static void
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357 master(cyg_addrword_t param)
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358 {
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359 int i;
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360 cyg_handle_t self = cyg_thread_self();
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361
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362 cyg_semaphore_init( &send_sema, 0 );
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363 cyg_semaphore_init( &recv_sema, 0 );
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364
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365 for ( i = 0 ; i < NLISTENERS; i++ )
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366 cyg_semaphore_init( &listen_sema[i], 0 );
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367
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368 init_all_network_interfaces();
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369 CYG_TEST_INFO("Start multiple loopback select test");
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370 #if NLOOP > 0
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371 // We are currently running at high prio, so we can just go and make
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372 // loads of threads:
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373
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374 // Some at higher prio
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375 for ( i = 0; i < NLISTENERS/2; i++ )
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376 cyg_thread_create(PRIO_LISTENER_HI, // Priority
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377 listener, // entry
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378 i, // entry parameter
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379 "listener", // Name
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380 &stack_listener[i][0], // Stack
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381 STACK_SIZE, // Size
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382 &listener_thread_handle[i], // Handle
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383 &listener_thread_data[i] // Thread data structure
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384 );
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385 // the rest at lower prio
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386 for ( ; i < NLISTENERS ; i++ )
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387 cyg_thread_create(PRIO_LISTENER_LO, // Priority
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388 listener, // entry
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389 i, // entry parameter
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390 "listener", // Name
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391 &stack_listener[i][0], // Stack
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392 STACK_SIZE, // Size
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393 &listener_thread_handle[i], // Handle
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394 &listener_thread_data[i] // Thread data structure
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395 );
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396
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397 // make the dummy event-grabber threads
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398 for ( i = 0; i < NDUMMIES; i++ )
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399 cyg_thread_create(PRIO_DUMMY, // Priority
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400 dummy, // entry
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401 i, // entry parameter
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402 "dummy", // Name
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403 &stack_dummy[i][0], // Stack
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404 STACK_SIZE, // Size
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405 &dummy_thread_handle[i], // Handle
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406 &dummy_thread_data[i] // Thread data structure
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407 );
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408
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409 // Start those threads
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410 for ( i = 0; i < NLISTENERS; i++ )
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411 cyg_thread_resume(listener_thread_handle[i]);
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412 for ( i = 0; i < NDUMMIES; i++ )
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413 cyg_thread_resume( dummy_thread_handle[i]);
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414
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415 // and let them start up and start listening...
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416 cyg_thread_set_priority( self, PRIO_MASTERLOW );
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417 CYG_TEST_INFO("All listeners should be go now");
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418 cyg_thread_set_priority( self, PRIO_MASTERHIGH );
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419
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420 for ( i = 0; i < NSENDERS; i++ ) {
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421 cyg_thread_create( (0 == i)
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422 ?PRIO_SENDER_MID
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423 : PRIO_SENDER_LOW, // Priority
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424 sender, // entry
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425 i, // entry parameter
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426 "sender", // Name
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427 &stack_sender[i][0], // Stack
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428 STACK_SIZE, // Size
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429 &sender_thread_handle[i], // Handle
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430 &sender_thread_data[i] // Thread data structure
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431 );
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432 cyg_thread_resume(sender_thread_handle[i]);
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433 }
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434
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435 // Now we are still higher priority; so go low and let everyone else
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436 // have their head. When we next run after this, it should all be
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437 // over.
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438 cyg_thread_set_priority( self, PRIO_MASTERLOW );
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439
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440 cyg_semaphore_peek( &recv_sema, &i );
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441 CYG_TEST_CHECK( NLISTENERS == i, "Not enough recvs occurred!" );
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442
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443 cyg_semaphore_peek( &send_sema, &i );
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444 CYG_TEST_CHECK( NLISTENERS == i, "Not enough sends occurred!" );
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445
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446 CYG_TEST_PASS_FINISH("Master returned OK");
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447 #endif
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448 CYG_TEST_NA( "No loopback devs" );
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449 }
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450
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451 void
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452 cyg_user_start(void)
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453 {
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454 cyg_thread_create(PRIO_MASTERHIGH, // Priority
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455 master, // entry
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456 0, // entry parameter
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457 "master", // Name
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458 &stack_master[0], // Stack
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459 MASTER_STACK_SIZE, // Size
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460 &master_thread_handle, // Handle
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461 &master_thread_data // Thread data structure
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462 );
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463 cyg_thread_resume(master_thread_handle); // Start it
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464 }
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465
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466 // EOF multi_lo_select.c