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160
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1 /* Copyright Joyent, Inc. and other Node contributors. All rights reserved.
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2 *
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3 * Permission is hereby granted, free of charge, to any person obtaining a copy
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4 * of this software and associated documentation files (the "Software"), to
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5 * deal in the Software without restriction, including without limitation the
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6 * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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7 * sell copies of the Software, and to permit persons to whom the Software is
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8 * furnished to do so, subject to the following conditions:
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9 *
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10 * The above copyright notice and this permission notice shall be included in
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11 * all copies or substantial portions of the Software.
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12 *
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13 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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14 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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15 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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16 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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17 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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18 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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19 * IN THE SOFTWARE.
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20 */
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21
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22 #include "uv.h"
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23 #include "task.h"
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24
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25 #include <stdio.h>
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26 #include <string.h>
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27
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28 /* See test-ipc.c */
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29 void spawn_helper(uv_pipe_t* channel,
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30 uv_process_t* process,
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31 const char* helper);
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32
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33 void ipc_send_recv_helper_threadproc(void* arg);
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34
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35 union handles {
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36 uv_handle_t handle;
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37 uv_stream_t stream;
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38 uv_pipe_t pipe;
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39 uv_tcp_t tcp;
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40 uv_tty_t tty;
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41 };
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42
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43 struct test_ctx {
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44 uv_pipe_t channel;
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45 uv_connect_t connect_req;
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46 uv_write_t write_req;
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47 uv_write_t write_req2;
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48 uv_handle_type expected_type;
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49 union handles send;
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50 union handles send2;
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51 union handles recv;
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52 union handles recv2;
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53 };
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54
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55 struct echo_ctx {
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56 uv_pipe_t listen;
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57 uv_pipe_t channel;
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58 uv_write_t write_req;
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59 uv_write_t write_req2;
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60 uv_handle_type expected_type;
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61 union handles recv;
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62 union handles recv2;
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63 };
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64
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65 static struct test_ctx ctx;
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66 static struct echo_ctx ctx2;
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67
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68 /* Used in write2_cb to decide if we need to cleanup or not */
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69 static int is_child_process;
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70 static int is_in_process;
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71 static int read_cb_count;
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72 static int recv_cb_count;
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73 static int write2_cb_called;
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74
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75
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76 static void alloc_cb(uv_handle_t* handle,
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77 size_t suggested_size,
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78 uv_buf_t* buf) {
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79 /* We're not actually reading anything so a small buffer is okay
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80 * but it needs to be heap-allocated to appease TSan.
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81 */
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82 buf->len = 8;
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83 buf->base = malloc(buf->len);
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84 ASSERT_NOT_NULL(buf->base);
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85 }
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86
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87
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88 static void recv_cb(uv_stream_t* handle,
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89 ssize_t nread,
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90 const uv_buf_t* buf) {
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91 uv_handle_type pending;
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92 uv_pipe_t* pipe;
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93 int r;
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94 union handles* recv;
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95
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96 free(buf->base);
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97
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98 pipe = (uv_pipe_t*) handle;
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99 ASSERT_PTR_EQ(pipe, &ctx.channel);
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100
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101 do {
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102 if (++recv_cb_count == 1) {
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103 recv = &ctx.recv;
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104 } else {
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105 recv = &ctx.recv2;
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106 }
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107
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108 /* Depending on the OS, the final recv_cb can be called after
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109 * the child process has terminated which can result in nread
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110 * being UV_EOF instead of the number of bytes read. Since
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111 * the other end of the pipe has closed this UV_EOF is an
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112 * acceptable value. */
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113 if (nread == UV_EOF) {
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114 /* UV_EOF is only acceptable for the final recv_cb call */
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115 ASSERT_EQ(2, recv_cb_count);
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116 } else {
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117 ASSERT_GE(nread, 0);
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118 ASSERT_GT(uv_pipe_pending_count(pipe), 0);
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119
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120 pending = uv_pipe_pending_type(pipe);
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121 ASSERT_EQ(pending, ctx.expected_type);
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122
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123 if (pending == UV_NAMED_PIPE)
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124 r = uv_pipe_init(ctx.channel.loop, &recv->pipe, 0);
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125 else if (pending == UV_TCP)
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126 r = uv_tcp_init(ctx.channel.loop, &recv->tcp);
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127 else
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128 abort();
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129 ASSERT_OK(r);
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130
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131 r = uv_accept(handle, &recv->stream);
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132 ASSERT_OK(r);
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133 }
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134 } while (uv_pipe_pending_count(pipe) > 0);
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135
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136 /* Close after two writes received */
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137 if (recv_cb_count == 2) {
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138 uv_close((uv_handle_t*)&ctx.channel, NULL);
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139 }
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140 }
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141
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142 static void connect_cb(uv_connect_t* req, int status) {
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143 int r;
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144 uv_buf_t buf;
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145
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146 ASSERT_PTR_EQ(req, &ctx.connect_req);
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147 ASSERT_OK(status);
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148
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149 buf = uv_buf_init(".", 1);
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150 r = uv_write2(&ctx.write_req,
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151 (uv_stream_t*)&ctx.channel,
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152 &buf, 1,
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153 &ctx.send.stream,
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154 NULL);
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155 ASSERT_OK(r);
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156
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157 /* Perform two writes to the same pipe to make sure that on Windows we are
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158 * not running into issue 505:
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159 * https://github.com/libuv/libuv/issues/505 */
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160 buf = uv_buf_init(".", 1);
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161 r = uv_write2(&ctx.write_req2,
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162 (uv_stream_t*)&ctx.channel,
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163 &buf, 1,
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164 &ctx.send2.stream,
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165 NULL);
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166 ASSERT_OK(r);
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167
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168 r = uv_read_start((uv_stream_t*)&ctx.channel, alloc_cb, recv_cb);
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169 ASSERT_OK(r);
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170 }
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171
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172 static int run_test(int inprocess) {
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173 uv_process_t process;
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174 uv_thread_t tid;
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175 int r;
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176
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177 if (inprocess) {
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178 r = uv_thread_create(&tid, ipc_send_recv_helper_threadproc, (void *) 42);
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179 ASSERT_OK(r);
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180
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181 uv_sleep(1000);
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182
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183 r = uv_pipe_init(uv_default_loop(), &ctx.channel, 1);
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184 ASSERT_OK(r);
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185
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186 uv_pipe_connect(&ctx.connect_req, &ctx.channel, TEST_PIPENAME_3, connect_cb);
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187 } else {
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188 spawn_helper(&ctx.channel, &process, "ipc_send_recv_helper");
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189
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190 connect_cb(&ctx.connect_req, 0);
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191 }
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192
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193 r = uv_run(uv_default_loop(), UV_RUN_DEFAULT);
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194 ASSERT_OK(r);
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195
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196 ASSERT_EQ(2, recv_cb_count);
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197
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198 if (inprocess) {
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199 r = uv_thread_join(&tid);
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200 ASSERT_OK(r);
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201 }
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202
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203 return 0;
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204 }
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205
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206 static int run_ipc_send_recv_pipe(int inprocess) {
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207 int r;
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208
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209 ctx.expected_type = UV_NAMED_PIPE;
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210
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211 r = uv_pipe_init(uv_default_loop(), &ctx.send.pipe, 1);
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212 ASSERT_OK(r);
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213
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214 r = uv_pipe_bind(&ctx.send.pipe, TEST_PIPENAME);
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215 ASSERT_OK(r);
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216
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217 r = uv_pipe_init(uv_default_loop(), &ctx.send2.pipe, 1);
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218 ASSERT_OK(r);
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219
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220 r = uv_pipe_bind(&ctx.send2.pipe, TEST_PIPENAME_2);
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221 ASSERT_OK(r);
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222
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223 r = run_test(inprocess);
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224 ASSERT_OK(r);
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225
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226 MAKE_VALGRIND_HAPPY(uv_default_loop());
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227 return 0;
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228 }
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229
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230 TEST_IMPL(ipc_send_recv_pipe) {
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231 #if defined(NO_SEND_HANDLE_ON_PIPE)
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232 RETURN_SKIP(NO_SEND_HANDLE_ON_PIPE);
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233 #endif
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234 return run_ipc_send_recv_pipe(0);
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235 }
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236
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237 TEST_IMPL(ipc_send_recv_pipe_inprocess) {
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238 #if defined(NO_SEND_HANDLE_ON_PIPE)
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239 RETURN_SKIP(NO_SEND_HANDLE_ON_PIPE);
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240 #endif
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241 return run_ipc_send_recv_pipe(1);
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242 }
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243
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244 static int run_ipc_send_recv_tcp(int inprocess) {
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245 struct sockaddr_in addr;
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246 int r;
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247
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248 ASSERT_OK(uv_ip4_addr("127.0.0.1", TEST_PORT, &addr));
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249
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250 ctx.expected_type = UV_TCP;
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251
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252 r = uv_tcp_init(uv_default_loop(), &ctx.send.tcp);
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253 ASSERT_OK(r);
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254
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255 r = uv_tcp_init(uv_default_loop(), &ctx.send2.tcp);
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256 ASSERT_OK(r);
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257
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258 r = uv_tcp_bind(&ctx.send.tcp, (const struct sockaddr*) &addr, 0);
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259 ASSERT_OK(r);
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260
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261 r = uv_tcp_bind(&ctx.send2.tcp, (const struct sockaddr*) &addr, 0);
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262 ASSERT_OK(r);
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263
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264 r = run_test(inprocess);
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265 ASSERT_OK(r);
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266
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267 MAKE_VALGRIND_HAPPY(uv_default_loop());
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268 return 0;
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269 }
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270
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271 TEST_IMPL(ipc_send_recv_tcp) {
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272 #if defined(NO_SEND_HANDLE_ON_PIPE)
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273 RETURN_SKIP(NO_SEND_HANDLE_ON_PIPE);
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274 #endif
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275 return run_ipc_send_recv_tcp(0);
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276 }
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277
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278 TEST_IMPL(ipc_send_recv_tcp_inprocess) {
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279 #if defined(NO_SEND_HANDLE_ON_PIPE)
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280 RETURN_SKIP(NO_SEND_HANDLE_ON_PIPE);
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281 #endif
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282 return run_ipc_send_recv_tcp(1);
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283 }
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284
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285
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286 /* Everything here runs in a child process or second thread. */
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287
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288 static void write2_cb(uv_write_t* req, int status) {
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289 ASSERT_OK(status);
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290
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291 /* After two successful writes in the child process, allow the child
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292 * process to be closed. */
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293 if (++write2_cb_called == 2 && (is_child_process || is_in_process)) {
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294 uv_close(&ctx2.recv.handle, NULL);
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295 uv_close(&ctx2.recv2.handle, NULL);
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296 uv_close((uv_handle_t*)&ctx2.channel, NULL);
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297 uv_close((uv_handle_t*)&ctx2.listen, NULL);
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298 }
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299 }
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300
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301 static void read_cb(uv_stream_t* handle,
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302 ssize_t nread,
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303 const uv_buf_t* rdbuf) {
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304 uv_buf_t wrbuf;
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305 uv_pipe_t* pipe;
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306 uv_handle_type pending;
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307 int r;
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308 union handles* recv;
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309 uv_write_t* write_req;
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310
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311 free(rdbuf->base);
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312
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313 if (nread == UV_EOF || nread == UV_ECONNABORTED) {
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314 return;
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315 }
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316
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317 ASSERT_GE(nread, 0);
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318
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319 pipe = (uv_pipe_t*) handle;
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320 ASSERT_PTR_EQ(pipe, &ctx2.channel);
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321
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322 while (uv_pipe_pending_count(pipe) > 0) {
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323 if (++read_cb_count == 2) {
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324 recv = &ctx2.recv;
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325 write_req = &ctx2.write_req;
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326 } else {
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327 recv = &ctx2.recv2;
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328 write_req = &ctx2.write_req2;
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329 }
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330
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331 pending = uv_pipe_pending_type(pipe);
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332 ASSERT(pending == UV_NAMED_PIPE || pending == UV_TCP);
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333
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334 if (pending == UV_NAMED_PIPE)
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335 r = uv_pipe_init(ctx2.channel.loop, &recv->pipe, 0);
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336 else if (pending == UV_TCP)
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337 r = uv_tcp_init(ctx2.channel.loop, &recv->tcp);
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338 else
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339 abort();
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340 ASSERT_OK(r);
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341
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342 r = uv_accept(handle, &recv->stream);
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343 ASSERT_OK(r);
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344
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345 wrbuf = uv_buf_init(".", 1);
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346 r = uv_write2(write_req,
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347 (uv_stream_t*)&ctx2.channel,
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348 &wrbuf,
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349 1,
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350 &recv->stream,
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351 write2_cb);
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352 ASSERT_OK(r);
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353 }
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354 }
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355
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356 static void send_recv_start(void) {
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357 int r;
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358 ASSERT_EQ(1, uv_is_readable((uv_stream_t*)&ctx2.channel));
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359 ASSERT_EQ(1, uv_is_writable((uv_stream_t*)&ctx2.channel));
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360 ASSERT_OK(uv_is_closing((uv_handle_t*)&ctx2.channel));
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361
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362 r = uv_read_start((uv_stream_t*)&ctx2.channel, alloc_cb, read_cb);
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363 ASSERT_OK(r);
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364 }
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365
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366 static void listen_cb(uv_stream_t* handle, int status) {
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367 int r;
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368 ASSERT_PTR_EQ(handle, (uv_stream_t*)&ctx2.listen);
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369 ASSERT_OK(status);
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370
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371 r = uv_accept((uv_stream_t*)&ctx2.listen, (uv_stream_t*)&ctx2.channel);
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372 ASSERT_OK(r);
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373
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374 send_recv_start();
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375 }
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376
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377 int run_ipc_send_recv_helper(uv_loop_t* loop, int inprocess) {
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378 int r;
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379
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380 is_in_process = inprocess;
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381
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382 memset(&ctx2, 0, sizeof(ctx2));
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383
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384 r = uv_pipe_init(loop, &ctx2.listen, 0);
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385 ASSERT_OK(r);
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386
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387 r = uv_pipe_init(loop, &ctx2.channel, 1);
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388 ASSERT_OK(r);
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389
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390 if (inprocess) {
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391 r = uv_pipe_bind(&ctx2.listen, TEST_PIPENAME_3);
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392 ASSERT_OK(r);
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393
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394 r = uv_listen((uv_stream_t*)&ctx2.listen, SOMAXCONN, listen_cb);
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395 ASSERT_OK(r);
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396 } else {
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397 r = uv_pipe_open(&ctx2.channel, 0);
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398 ASSERT_OK(r);
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399
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400 send_recv_start();
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401 }
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402
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403 notify_parent_process();
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404 r = uv_run(loop, UV_RUN_DEFAULT);
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405 ASSERT_OK(r);
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406
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407 return 0;
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408 }
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409
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410 /* stdin is a duplex channel over which a handle is sent.
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411 * We receive it and send it back where it came from.
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412 */
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413 int ipc_send_recv_helper(void) {
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414 int r;
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415
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416 r = run_ipc_send_recv_helper(uv_default_loop(), 0);
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417 ASSERT_OK(r);
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418
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419 MAKE_VALGRIND_HAPPY(uv_default_loop());
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420 return 0;
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421 }
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422
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423 void ipc_send_recv_helper_threadproc(void* arg) {
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424 int r;
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425 uv_loop_t loop;
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426
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427 r = uv_loop_init(&loop);
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428 ASSERT_OK(r);
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429
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430 r = run_ipc_send_recv_helper(&loop, 1);
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431 ASSERT_OK(r);
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432
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433 r = uv_loop_close(&loop);
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434 ASSERT_OK(r);
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435 }
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