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1 /* Copyright (c) 2015, Ben Noordhuis <[email protected]>
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2 *
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3 * Permission to use, copy, modify, and/or distribute this software for any
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4 * purpose with or without fee is hereby granted, provided that the above
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5 * copyright notice and this permission notice appear in all copies.
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6 *
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7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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10 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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12 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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13 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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14 */
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15
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16 #include "uv.h"
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17 #include "task.h"
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18
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19 #include <string.h> /* memset */
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20 #ifndef _WIN32
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21 #include <unistd.h> /* close */
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22 #endif
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23
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24 struct thread_ctx {
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25 uv_barrier_t barrier;
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26 uv_file fd;
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27 };
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28
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29 static void thread_main(void* arg) {
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30 struct thread_ctx* ctx;
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31 uv_fs_t req;
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32 uv_buf_t bufs[1];
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33 char buf[4096];
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34 ssize_t n;
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35 int uv_errno;
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36
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37 bufs[0] = uv_buf_init(buf, sizeof(buf));
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38
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39 ctx = arg;
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40 uv_barrier_wait(&ctx->barrier);
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41
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42 uv_sleep(100); /* make sure we are forcing the writer to block a bit */
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43 do {
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44 uv_errno = uv_fs_read(NULL, &req, ctx->fd, bufs, 1, -1, NULL);
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45 n = req.result;
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46 uv_fs_req_cleanup(&req);
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47 } while (n > 0 || (n == -1 && uv_errno == UV_EINTR));
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48
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49 ASSERT_OK(n);
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50 }
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51
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52
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53 #ifdef _WIN32
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54 static void write_cb(uv_write_t* req, int status) {
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55 ASSERT_OK(status);
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56 req->handle = NULL; /* signal completion of write_cb */
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57 }
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58 #endif
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59
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60 #ifdef _WIN32
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61 #define NWRITES (10 << 16)
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62 #else
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63 #define NWRITES (10 << 20)
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64 #endif
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65
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66
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67 TEST_IMPL(pipe_set_non_blocking) {
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68 struct thread_ctx ctx;
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69 uv_pipe_t pipe_handle;
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70 uv_thread_t thread;
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71 size_t nwritten;
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72 char data[4096];
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73 uv_buf_t buf;
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74 uv_file fd[2];
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75 int n;
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76 #ifdef _WIN32
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77 uv_write_t write_req;
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78 #endif
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79
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80 ASSERT_OK(uv_pipe_init(uv_default_loop(), &pipe_handle, 0));
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81 ASSERT_OK(uv_pipe(fd, 0, 0));
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82 ASSERT_OK(uv_pipe_open(&pipe_handle, fd[1]));
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83 ASSERT_OK(uv_stream_set_blocking((uv_stream_t*) &pipe_handle, 1));
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84 fd[1] = -1; /* fd[1] is owned by pipe_handle now. */
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85
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86 ctx.fd = fd[0];
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87 ASSERT_OK(uv_barrier_init(&ctx.barrier, 2));
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88 ASSERT_OK(uv_thread_create(&thread, thread_main, &ctx));
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89 uv_barrier_wait(&ctx.barrier);
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90
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91 buf.len = sizeof(data);
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92 buf.base = data;
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93 memset(data, '.', sizeof(data));
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94
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95 nwritten = 0;
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96 while (nwritten < NWRITES) {
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97 /* The stream is in blocking mode so uv_try_write() should always succeed
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98 * with the exact number of bytes that we wanted written.
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99 */
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100 n = uv_try_write((uv_stream_t*) &pipe_handle, &buf, 1);
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101 #ifdef _WIN32
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102 ASSERT_EQ(n, UV_EAGAIN); /* E_NOTIMPL */
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103 ASSERT_OK(uv_write(&write_req,
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104 (uv_stream_t*) &pipe_handle,
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105 &buf,
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106 1,
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107 write_cb));
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108 ASSERT_NOT_NULL(write_req.handle);
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109 ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_ONCE));
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110 ASSERT_NULL(write_req.handle); /* check for signaled completion of write_cb */
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111 n = buf.len;
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112 #endif
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113 ASSERT_EQ(n, sizeof(data));
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114 nwritten += n;
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115 }
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116
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117 uv_close((uv_handle_t*) &pipe_handle, NULL);
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118 ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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119
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120 ASSERT_OK(uv_thread_join(&thread));
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121 #ifdef _WIN32
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122 ASSERT_OK(_close(fd[0])); /* fd[1] is closed by uv_close(). */
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123 #else
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124 ASSERT_OK(close(fd[0])); /* fd[1] is closed by uv_close(). */
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125 #endif
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126 fd[0] = -1;
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127 uv_barrier_destroy(&ctx.barrier);
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128
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129 MAKE_VALGRIND_HAPPY(uv_default_loop());
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130 return 0;
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131 }
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