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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 "../src/uv-common.h"
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25
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26 #include <string.h>
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27
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28 struct semaphores {
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29 uv_sem_t main;
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30 uv_sem_t worker;
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31 };
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32
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33 static void thread_run(void* arg) {
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34 int r;
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35 char thread_name[16];
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36 struct semaphores* sem;
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37 uv_thread_t thread;
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38
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39 sem = arg;
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40
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41 #ifdef _WIN32
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42 /* uv_thread_self isn't defined for the main thread on Windows. */
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43 thread = GetCurrentThread();
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44 #else
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45 thread = uv_thread_self();
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46 #endif
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47
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48 r = uv_thread_setname("worker-thread");
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49 ASSERT_OK(r);
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50
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51 uv_sem_post(&sem->worker);
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52
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53 r = uv_thread_getname(&thread, thread_name, sizeof(thread_name));
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54 ASSERT_OK(r);
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55
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56 ASSERT_STR_EQ(thread_name, "worker-thread");
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57
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58 uv_sem_wait(&sem->main);
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59 }
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60
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61 TEST_IMPL(thread_name) {
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62 int r;
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63 uv_thread_t threads[2];
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64 char tn[UV_PTHREAD_MAX_NAMELEN_NP];
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65 char thread_name[UV_PTHREAD_MAX_NAMELEN_NP];
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66 char long_thread_name[UV_PTHREAD_MAX_NAMELEN_NP + 1];
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67 struct semaphores sem;
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68
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69 #if defined(__ANDROID_API__) && __ANDROID_API__ < 26 || \
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70 defined(_AIX) || \
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71 defined(__MVS__) || \
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72 defined(__PASE__)
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73 RETURN_SKIP("API not available on this platform");
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74 #endif
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75
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76 ASSERT_OK(uv_sem_init(&sem.main, 0));
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77 ASSERT_OK(uv_sem_init(&sem.worker, 0));
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78
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79 memset(thread_name, 'a', sizeof(thread_name) - 1);
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80 thread_name[sizeof(thread_name) - 1] = '\0';
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81
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82 memset(long_thread_name, 'a', sizeof(long_thread_name) - 1);
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83 long_thread_name[sizeof(long_thread_name) - 1] = '\0';
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84
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85 #ifdef _WIN32
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86 /* uv_thread_self isn't defined for the main thread on Windows. */
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87 threads[0] = GetCurrentThread();
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88 #else
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89 threads[0] = uv_thread_self();
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90 #endif
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91
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92 r = uv_thread_getname(&threads[0], tn, sizeof(tn));
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93 ASSERT_OK(r);
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94
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95 r = uv_thread_setname(long_thread_name);
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96 ASSERT_OK(r);
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97
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98 r = uv_thread_getname(&threads[0], tn, sizeof(tn));
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99 ASSERT_OK(r);
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100 ASSERT_STR_EQ(tn, thread_name);
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101
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102 r = uv_thread_setname(thread_name);
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103 ASSERT_OK(r);
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104
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105 r = uv_thread_getname(&threads[0], tn, sizeof(tn));
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106 ASSERT_OK(r);
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107 ASSERT_STR_EQ(tn, thread_name);
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108
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109 r = uv_thread_getname(&threads[0], tn, 3);
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110 ASSERT_OK(r);
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111 ASSERT_EQ(strlen(tn), 2);
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112 ASSERT_OK(memcmp(thread_name, tn, 2));
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113
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114 /* Illumos doesn't support non-ASCII thread names. */
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115 #ifndef __illumos__
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116 r = uv_thread_setname("~½¬{½");
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117 ASSERT_OK(r);
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118
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119 r = uv_thread_getname(&threads[0], tn, sizeof(tn));
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120 ASSERT_OK(r);
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121 ASSERT_STR_EQ(tn, "~½¬{½");
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122 #endif
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123
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124 ASSERT_OK(uv_thread_create(threads + 1, thread_run, &sem));
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125
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126 uv_sem_wait(&sem.worker);
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127
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128 r = uv_thread_getname(threads + 1, tn, sizeof(tn));
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129 ASSERT_OK(r);
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130
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131 ASSERT_STR_EQ(tn, "worker-thread");
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132
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133 uv_sem_post(&sem.main);
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134
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135 ASSERT_OK(uv_thread_join(threads + 1));
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136
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137 uv_sem_destroy(&sem.main);
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138 uv_sem_destroy(&sem.worker);
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139
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140 return 0;
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141 }
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142
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143 #define MAX_THREADS 4
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144
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145 static void* executedThreads[MAX_THREADS] = { NULL };
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146 static int size;
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147 static uv_loop_t* loop;
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148
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149 static unsigned short int key_exists(void* key) {
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150 size_t i;
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151 for (i = 0; i < MAX_THREADS; i++) {
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152 if (executedThreads[i] == key) {
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153 return 1;
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154 }
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155 }
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156 return 0;
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157 }
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158
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159 static void work_cb(uv_work_t* req) {
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160 uv_thread_t thread = uv_thread_self();
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161 req->data = &thread;
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162 char tn[UV_PTHREAD_MAX_NAMELEN_NP];
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163 ASSERT_OK(uv_thread_getname(&thread, tn, sizeof(tn)));
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164 ASSERT_STR_EQ(tn, "libuv-worker");
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165 }
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166
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167 static void after_work_cb(uv_work_t* req, int status) {
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168 ASSERT_OK(status);
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169 if (!key_exists(req->data)) {
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170 executedThreads[size++] = req->data;
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171 }
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172
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173 if (size == MAX_THREADS) {
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174 return;
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175 }
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176
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177 uv_queue_work(loop, req, work_cb, after_work_cb);
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178 }
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179
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180 TEST_IMPL(thread_name_threadpool) {
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181
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182 #if defined(_AIX) || defined(__PASE__)
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183 RETURN_SKIP("API not available on this platform");
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184 #endif
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185 uv_work_t req;
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186 loop = uv_default_loop();
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187 // Just to make sure all workers will be executed
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188 // with the correct thread name
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189 ASSERT_OK(uv_queue_work(loop, &req, work_cb, after_work_cb));
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190 uv_run(loop, UV_RUN_DEFAULT);
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191 MAKE_VALGRIND_HAPPY(uv_default_loop());
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192 return 0;
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193 }
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