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160
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1 /* Copyright libuv project 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 #include <string.h> /* memset */
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25
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26 #define UV_NS_TO_MS 1000000
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27
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28 typedef struct {
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29 uv_fs_t open_req;
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30 uv_fs_t write_req;
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31 uv_fs_t close_req;
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32 } fs_reqs_t;
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33
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34 static uint64_t last_events_count;
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35 static char test_buf[] = "test-buffer\n";
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36 static fs_reqs_t fs_reqs;
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37 static int pool_events_counter;
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38
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39
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40 static void timer_spin_cb(uv_timer_t* handle) {
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41 uint64_t t;
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42
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43 (*(int*) handle->data)++;
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44 t = uv_hrtime();
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45 /* Spin for 500 ms to spin loop time out of the delta check. */
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46 while (uv_hrtime() - t < 600 * UV_NS_TO_MS) { }
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47 }
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48
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49
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50 TEST_IMPL(metrics_idle_time) {
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51 #if defined(__OpenBSD__)
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52 RETURN_SKIP("Test does not currently work in OpenBSD");
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53 #endif
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54 const uint64_t timeout = 1000;
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55 uv_timer_t timer;
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56 uint64_t idle_time;
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57 int cntr;
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58
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59 cntr = 0;
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60 timer.data = &cntr;
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61
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62 ASSERT_OK(uv_loop_configure(uv_default_loop(), UV_METRICS_IDLE_TIME));
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63 ASSERT_OK(uv_timer_init(uv_default_loop(), &timer));
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64 ASSERT_OK(uv_timer_start(&timer, timer_spin_cb, timeout, 0));
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65
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66 ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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67 ASSERT_GT(cntr, 0);
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68
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69 idle_time = uv_metrics_idle_time(uv_default_loop());
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70
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71 /* Permissive check that the idle time matches within the timeout ±500 ms. */
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72 ASSERT_LE(idle_time, (timeout + 500) * UV_NS_TO_MS);
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73 ASSERT_GE(idle_time, (timeout - 500) * UV_NS_TO_MS);
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74
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75 MAKE_VALGRIND_HAPPY(uv_default_loop());
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76 return 0;
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77 }
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78
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79
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80 static void metrics_routine_cb(void* arg) {
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81 const uint64_t timeout = 1000;
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82 uv_loop_t loop;
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83 uv_timer_t timer;
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84 uint64_t idle_time;
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85 int cntr;
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86
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87 cntr = 0;
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88 timer.data = &cntr;
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89
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90 ASSERT_OK(uv_loop_init(&loop));
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91 ASSERT_OK(uv_loop_configure(&loop, UV_METRICS_IDLE_TIME));
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92 ASSERT_OK(uv_timer_init(&loop, &timer));
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93 ASSERT_OK(uv_timer_start(&timer, timer_spin_cb, timeout, 0));
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94
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95 ASSERT_OK(uv_run(&loop, UV_RUN_DEFAULT));
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96 ASSERT_GT(cntr, 0);
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97
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98 idle_time = uv_metrics_idle_time(&loop);
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99
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100 /* Only checking that idle time is greater than the lower bound since there
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101 * may have been thread contention, causing the event loop to be delayed in
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102 * the idle phase longer than expected.
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103 */
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104 ASSERT_GE(idle_time, (timeout - 500) * UV_NS_TO_MS);
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105
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106 close_loop(&loop);
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107 ASSERT_OK(uv_loop_close(&loop));
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108 }
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109
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110
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111 TEST_IMPL(metrics_idle_time_thread) {
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112 uv_thread_t threads[5];
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113 int i;
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114
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115 for (i = 0; i < 5; i++) {
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116 ASSERT_OK(uv_thread_create(&threads[i], metrics_routine_cb, NULL));
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117 }
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118
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119 for (i = 0; i < 5; i++) {
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120 uv_thread_join(&threads[i]);
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121 }
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122
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123 return 0;
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124 }
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125
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126
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127 static void timer_noop_cb(uv_timer_t* handle) {
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128 (*(int*) handle->data)++;
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129 }
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130
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131
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132 TEST_IMPL(metrics_idle_time_zero) {
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133 uv_metrics_t metrics;
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134 uv_timer_t timer;
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135 int cntr;
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136
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137 cntr = 0;
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138 timer.data = &cntr;
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139 ASSERT_OK(uv_loop_configure(uv_default_loop(), UV_METRICS_IDLE_TIME));
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140 ASSERT_OK(uv_timer_init(uv_default_loop(), &timer));
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141 ASSERT_OK(uv_timer_start(&timer, timer_noop_cb, 0, 0));
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142
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143 ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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144
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145 ASSERT_GT(cntr, 0);
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146 ASSERT_OK(uv_metrics_idle_time(uv_default_loop()));
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147
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148 ASSERT_OK(uv_metrics_info(uv_default_loop(), &metrics));
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149 ASSERT_UINT64_EQ(cntr, metrics.loop_count);
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150
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151 MAKE_VALGRIND_HAPPY(uv_default_loop());
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152 return 0;
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153 }
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154
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155
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156 static void close_cb(uv_fs_t* req) {
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157 uv_metrics_t metrics;
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158
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159 ASSERT_OK(uv_metrics_info(uv_default_loop(), &metrics));
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160 ASSERT_UINT64_EQ(3, metrics.loop_count);
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161 ASSERT_UINT64_GT(metrics.events, last_events_count);
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162
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163 uv_fs_req_cleanup(req);
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164 last_events_count = metrics.events;
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165 }
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166
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167
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168 static void write_cb(uv_fs_t* req) {
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169 uv_metrics_t metrics;
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170
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171 ASSERT_OK(uv_metrics_info(uv_default_loop(), &metrics));
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172 ASSERT_UINT64_EQ(2, metrics.loop_count);
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173 ASSERT_UINT64_GT(metrics.events, last_events_count);
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174 ASSERT_EQ(req->result, sizeof(test_buf));
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175
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176 uv_fs_req_cleanup(req);
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177 last_events_count = metrics.events;
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178
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179 ASSERT_OK(uv_fs_close(uv_default_loop(),
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180 &fs_reqs.close_req,
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181 fs_reqs.open_req.result,
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182 close_cb));
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183 }
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184
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185
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186 static void create_cb(uv_fs_t* req) {
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187 uv_metrics_t metrics;
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188
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189 ASSERT_OK(uv_metrics_info(uv_default_loop(), &metrics));
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190 /* Event count here is still 0 so not going to check. */
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191 ASSERT_UINT64_EQ(1, metrics.loop_count);
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192 ASSERT_GE(req->result, 0);
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193
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194 uv_fs_req_cleanup(req);
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195 last_events_count = metrics.events;
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196
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197 uv_buf_t iov = uv_buf_init(test_buf, sizeof(test_buf));
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198 ASSERT_OK(uv_fs_write(uv_default_loop(),
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199 &fs_reqs.write_req,
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200 req->result,
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201 &iov,
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202 1,
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203 0,
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204 write_cb));
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205 }
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206
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207
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208 static void prepare_cb(uv_prepare_t* handle) {
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209 uv_metrics_t metrics;
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210
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211 uv_prepare_stop(handle);
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212
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213 ASSERT_OK(uv_metrics_info(uv_default_loop(), &metrics));
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214 ASSERT_UINT64_EQ(0, metrics.loop_count);
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215 ASSERT_UINT64_EQ(0, metrics.events);
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216
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217 ASSERT_OK(uv_fs_open(uv_default_loop(),
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218 &fs_reqs.open_req,
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219 "test_file",
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220 UV_FS_O_WRONLY | UV_FS_O_CREAT, S_IRUSR | S_IWUSR,
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221 create_cb));
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222 }
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223
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224
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225 TEST_IMPL(metrics_info_check) {
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226 uv_fs_t unlink_req;
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227 uv_prepare_t prepare;
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228
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229 uv_fs_unlink(NULL, &unlink_req, "test_file", NULL);
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230 uv_fs_req_cleanup(&unlink_req);
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231
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232 ASSERT_OK(uv_prepare_init(uv_default_loop(), &prepare));
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233 ASSERT_OK(uv_prepare_start(&prepare, prepare_cb));
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234
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235 ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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236
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237 uv_fs_unlink(NULL, &unlink_req, "test_file", NULL);
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238 uv_fs_req_cleanup(&unlink_req);
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239
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240 MAKE_VALGRIND_HAPPY(uv_default_loop());
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241 return 0;
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242 }
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243
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244
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245 static void fs_prepare_cb(uv_prepare_t* handle) {
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246 uv_metrics_t metrics;
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247
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248 ASSERT_OK(uv_metrics_info(uv_default_loop(), &metrics));
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249
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250 if (pool_events_counter == 1)
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251 ASSERT_EQ(metrics.events, metrics.events_waiting);
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252
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253 if (pool_events_counter < 7)
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254 return;
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255
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256 uv_prepare_stop(handle);
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257 pool_events_counter = -42;
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258 }
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259
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260
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261 static void fs_stat_cb(uv_fs_t* req) {
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262 uv_fs_req_cleanup(req);
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263 pool_events_counter++;
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264 }
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265
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266
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267 static void fs_work_cb(uv_work_t* req) {
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268 }
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269
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270
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271 static void fs_after_work_cb(uv_work_t* req, int status) {
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272 free(req);
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273 pool_events_counter++;
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274 }
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275
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276
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277 static void fs_write_cb(uv_fs_t* req) {
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278 uv_work_t* work1 = malloc(sizeof(*work1));
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279 uv_work_t* work2 = malloc(sizeof(*work2));
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280 pool_events_counter++;
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281
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282 uv_fs_req_cleanup(req);
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283
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284 ASSERT_OK(uv_queue_work(uv_default_loop(),
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285 work1,
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286 fs_work_cb,
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287 fs_after_work_cb));
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288 ASSERT_OK(uv_queue_work(uv_default_loop(),
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289 work2,
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290 fs_work_cb,
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291 fs_after_work_cb));
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292 }
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293
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294
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295 static void fs_random_cb(uv_random_t* req, int status, void* buf, size_t len) {
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296 pool_events_counter++;
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297 }
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298
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299
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300 static void fs_addrinfo_cb(uv_getaddrinfo_t* req,
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301 int status,
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302 struct addrinfo* res) {
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303 uv_freeaddrinfo(req->addrinfo);
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304 pool_events_counter++;
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305 }
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306
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307
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308 TEST_IMPL(metrics_pool_events) {
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309 uv_buf_t iov;
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310 uv_fs_t open_req;
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311 uv_fs_t stat1_req;
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312 uv_fs_t stat2_req;
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313 uv_fs_t unlink_req;
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314 uv_fs_t write_req;
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315 uv_getaddrinfo_t addrinfo_req;
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316 uv_metrics_t metrics;
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317 uv_prepare_t prepare;
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318 uv_random_t random_req;
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319 int fd;
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320 char rdata;
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321
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322 ASSERT_OK(uv_loop_configure(uv_default_loop(), UV_METRICS_IDLE_TIME));
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323
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324 uv_fs_unlink(NULL, &unlink_req, "test_file", NULL);
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325 uv_fs_req_cleanup(&unlink_req);
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326
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327 ASSERT_OK(uv_prepare_init(uv_default_loop(), &prepare));
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328 ASSERT_OK(uv_prepare_start(&prepare, fs_prepare_cb));
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329
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330 pool_events_counter = 0;
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331 fd = uv_fs_open(NULL,
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332 &open_req, "test_file", UV_FS_O_WRONLY | UV_FS_O_CREAT,
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333 S_IRUSR | S_IWUSR,
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334 NULL);
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335 ASSERT_GT(fd, 0);
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336 uv_fs_req_cleanup(&open_req);
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337
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338 iov = uv_buf_init(test_buf, sizeof(test_buf));
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339 ASSERT_OK(uv_fs_write(uv_default_loop(),
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340 &write_req,
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341 fd,
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342 &iov,
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343 1,
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344 0,
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345 fs_write_cb));
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346 ASSERT_OK(uv_fs_stat(uv_default_loop(),
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347 &stat1_req,
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348 "test_file",
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349 fs_stat_cb));
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350 ASSERT_OK(uv_fs_stat(uv_default_loop(),
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351 &stat2_req,
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352 "test_file",
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353 fs_stat_cb));
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354 ASSERT_OK(uv_random(uv_default_loop(),
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355 &random_req,
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356 &rdata,
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357 1,
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358 0,
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359 fs_random_cb));
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360 ASSERT_OK(uv_getaddrinfo(uv_default_loop(),
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361 &addrinfo_req,
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362 fs_addrinfo_cb,
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363 "example.invalid",
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364 NULL,
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365 NULL));
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366
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367 /* Sleep for a moment to hopefully force the events to complete before
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368 * entering the event loop. */
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369 uv_sleep(100);
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370
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371 ASSERT_OK(uv_run(uv_default_loop(), UV_RUN_DEFAULT));
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372
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373 ASSERT_OK(uv_metrics_info(uv_default_loop(), &metrics));
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374 /* It's possible for uv__work_done() to execute one extra time even though the
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375 * QUEUE has already been cleared out. This has to do with the way we use an
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376 * uv_async to tell the event loop thread to process the worker pool QUEUE. */
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377 ASSERT_GE(metrics.events, 7);
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378 /* It's possible one of the other events also got stuck in the event queue, so
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379 * check GE instead of EQ. Reason for 4 instead of 5 is because the call to
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380 * uv_getaddrinfo() is racey and slow. So can't guarantee that it'll always
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381 * execute before sleep completes. */
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382 ASSERT_GE(metrics.events_waiting, 4);
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383 ASSERT_EQ(pool_events_counter, -42);
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384
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385 uv_fs_unlink(NULL, &unlink_req, "test_file", NULL);
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386 uv_fs_req_cleanup(&unlink_req);
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387
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388 MAKE_VALGRIND_HAPPY(uv_default_loop());
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389 return 0;
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390 }
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