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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 "internal.h"
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24
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25 #include <pthread.h>
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26 #ifdef __OpenBSD__
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27 #include <pthread_np.h>
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28 #endif
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29 #include <assert.h>
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30 #include <errno.h>
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31
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32 #include <sys/time.h>
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33 #include <sys/resource.h> /* getrlimit() */
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34 #include <unistd.h> /* getpagesize() */
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35
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36 #include <limits.h>
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37
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38 #ifdef __MVS__
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39 #include <sys/ipc.h>
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40 #include <sys/sem.h>
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41 #endif
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42
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43 #if defined(__GLIBC__) && !defined(__UCLIBC__)
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44 #include <gnu/libc-version.h> /* gnu_get_libc_version() */
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45 #endif
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46
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47 #if defined(__linux__)
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48 # include <sched.h>
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49 # define uv__cpu_set_t cpu_set_t
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50 #elif defined(__FreeBSD__)
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51 # include <sys/param.h>
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52 # include <sys/cpuset.h>
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53 # include <pthread_np.h>
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54 # define uv__cpu_set_t cpuset_t
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55 #endif
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56
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57
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58 #undef NANOSEC
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59 #define NANOSEC ((uint64_t) 1e9)
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60
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61 /* Musl's PTHREAD_STACK_MIN is 2 KB on all architectures, which is
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62 * too small to safely receive signals on.
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63 *
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64 * Musl's PTHREAD_STACK_MIN + MINSIGSTKSZ == 8192 on arm64 (which has
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65 * the largest MINSIGSTKSZ of the architectures that musl supports) so
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66 * let's use that as a lower bound.
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67 *
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68 * We use a hardcoded value because PTHREAD_STACK_MIN + MINSIGSTKSZ
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69 * is between 28 and 133 KB when compiling against glibc, depending
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70 * on the architecture.
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71 */
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72 static size_t uv__min_stack_size(void) {
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73 static const size_t min = 8192;
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74
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75 #ifdef PTHREAD_STACK_MIN /* Not defined on NetBSD. */
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76 if (min < (size_t) PTHREAD_STACK_MIN)
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77 return PTHREAD_STACK_MIN;
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78 #endif /* PTHREAD_STACK_MIN */
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79
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80 return min;
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81 }
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82
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83
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84 /* On Linux, threads created by musl have a much smaller stack than threads
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85 * created by glibc (80 vs. 2048 or 4096 kB.) Follow glibc for consistency.
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86 */
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87 static size_t uv__default_stack_size(void) {
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88 #if !defined(__linux__)
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89 return 0;
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90 #elif defined(__PPC__) || defined(__ppc__) || defined(__powerpc__)
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91 return 4 << 20; /* glibc default. */
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92 #else
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93 return 2 << 20; /* glibc default. */
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94 #endif
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95 }
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96
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97
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98 /* On MacOS, threads other than the main thread are created with a reduced
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99 * stack size by default. Adjust to RLIMIT_STACK aligned to the page size.
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100 */
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101 size_t uv__thread_stack_size(void) {
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102 #if defined(__APPLE__) || defined(__linux__)
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103 struct rlimit lim;
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104
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105 /* getrlimit() can fail on some aarch64 systems due to a glibc bug where
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106 * the system call wrapper invokes the wrong system call. Don't treat
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107 * that as fatal, just use the default stack size instead.
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108 */
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109 if (getrlimit(RLIMIT_STACK, &lim))
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110 return uv__default_stack_size();
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111
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112 if (lim.rlim_cur == RLIM_INFINITY)
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113 return uv__default_stack_size();
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114
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115 /* pthread_attr_setstacksize() expects page-aligned values. */
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116 lim.rlim_cur -= lim.rlim_cur % (rlim_t) getpagesize();
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117
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118 if (lim.rlim_cur >= (rlim_t) uv__min_stack_size())
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119 return lim.rlim_cur;
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120 #endif
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121
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122 return uv__default_stack_size();
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123 }
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124
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125
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126 int uv_thread_create(uv_thread_t *tid, void (*entry)(void *arg), void *arg) {
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127 uv_thread_options_t params;
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128 params.flags = UV_THREAD_NO_FLAGS;
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129 return uv_thread_create_ex(tid, ¶ms, entry, arg);
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130 }
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131
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132
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133 int uv_thread_detach(uv_thread_t *tid) {
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134 return UV__ERR(pthread_detach(*tid));
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135 }
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136
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137
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138 int uv_thread_create_ex(uv_thread_t* tid,
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139 const uv_thread_options_t* params,
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140 void (*entry)(void *arg),
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141 void *arg) {
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142 int err;
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143 pthread_attr_t* attr;
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144 pthread_attr_t attr_storage;
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145 size_t pagesize;
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146 size_t stack_size;
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147 size_t min_stack_size;
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148
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149 /* Used to squelch a -Wcast-function-type warning. */
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150 union {
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151 void (*in)(void*);
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152 void* (*out)(void*);
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153 } f;
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154
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155 stack_size =
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156 params->flags & UV_THREAD_HAS_STACK_SIZE ? params->stack_size : 0;
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157
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158 attr = NULL;
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159 if (stack_size == 0) {
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160 stack_size = uv__thread_stack_size();
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161 } else {
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162 pagesize = (size_t)getpagesize();
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163 /* Round up to the nearest page boundary. */
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164 stack_size = (stack_size + pagesize - 1) &~ (pagesize - 1);
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165 min_stack_size = uv__min_stack_size();
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166 if (stack_size < min_stack_size)
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167 stack_size = min_stack_size;
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168 }
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169
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170 if (stack_size > 0) {
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171 attr = &attr_storage;
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172
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173 if (pthread_attr_init(attr))
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174 abort();
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175
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176 if (pthread_attr_setstacksize(attr, stack_size))
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177 abort();
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178 }
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179
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180 f.in = entry;
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181 err = pthread_create(tid, attr, f.out, arg);
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182
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183 if (attr != NULL)
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184 pthread_attr_destroy(attr);
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185
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186 return UV__ERR(err);
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187 }
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188
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189 #if UV__CPU_AFFINITY_SUPPORTED
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190
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191 int uv_thread_setaffinity(uv_thread_t* tid,
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192 char* cpumask,
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193 char* oldmask,
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194 size_t mask_size) {
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195 int i;
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196 int r;
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197 uv__cpu_set_t cpuset;
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198 int cpumasksize;
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199
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200 cpumasksize = uv_cpumask_size();
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201 if (cpumasksize < 0)
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202 return cpumasksize;
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203 if (mask_size < (size_t)cpumasksize)
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204 return UV_EINVAL;
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205
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206 if (oldmask != NULL) {
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207 r = uv_thread_getaffinity(tid, oldmask, mask_size);
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208 if (r < 0)
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209 return r;
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210 }
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211
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212 CPU_ZERO(&cpuset);
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213 for (i = 0; i < cpumasksize; i++)
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214 if (cpumask[i])
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215 CPU_SET(i, &cpuset);
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216
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217 #if defined(__ANDROID__) || defined(__OHOS__)
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218 if (sched_setaffinity(pthread_gettid_np(*tid), sizeof(cpuset), &cpuset))
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219 r = errno;
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220 else
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221 r = 0;
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222 #else
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223 r = pthread_setaffinity_np(*tid, sizeof(cpuset), &cpuset);
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224 #endif
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225
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226 return UV__ERR(r);
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227 }
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228
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229
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230 int uv_thread_getaffinity(uv_thread_t* tid,
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231 char* cpumask,
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232 size_t mask_size) {
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233 int r;
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234 int i;
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235 uv__cpu_set_t cpuset;
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236 int cpumasksize;
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237
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238 cpumasksize = uv_cpumask_size();
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239 if (cpumasksize < 0)
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240 return cpumasksize;
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241 if (mask_size < (size_t)cpumasksize)
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242 return UV_EINVAL;
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243
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244 CPU_ZERO(&cpuset);
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245 #if defined(__ANDROID__) || defined(__OHOS__)
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246 if (sched_getaffinity(pthread_gettid_np(*tid), sizeof(cpuset), &cpuset))
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247 r = errno;
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248 else
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249 r = 0;
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250 #else
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251 r = pthread_getaffinity_np(*tid, sizeof(cpuset), &cpuset);
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252 #endif
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253 if (r)
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254 return UV__ERR(r);
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255 for (i = 0; i < cpumasksize; i++)
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256 cpumask[i] = !!CPU_ISSET(i, &cpuset);
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257
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258 return 0;
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259 }
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260 #else
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261 int uv_thread_setaffinity(uv_thread_t* tid,
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262 char* cpumask,
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263 char* oldmask,
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264 size_t mask_size) {
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265 return UV_ENOTSUP;
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266 }
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267
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268
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269 int uv_thread_getaffinity(uv_thread_t* tid,
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270 char* cpumask,
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271 size_t mask_size) {
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272 return UV_ENOTSUP;
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273 }
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274 #endif /* defined(__linux__) || defined(UV_BSD_H) */
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275
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276 int uv_thread_getcpu(void) {
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277 #if UV__CPU_AFFINITY_SUPPORTED
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278 int cpu;
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279
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280 cpu = sched_getcpu();
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281 if (cpu < 0)
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282 return UV__ERR(errno);
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283
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284 return cpu;
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285 #else
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286 return UV_ENOTSUP;
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287 #endif
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288 }
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289
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290 uv_thread_t uv_thread_self(void) {
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291 return pthread_self();
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292 }
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293
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294 int uv_thread_join(uv_thread_t *tid) {
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295 return UV__ERR(pthread_join(*tid, NULL));
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296 }
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297
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298
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299 int uv_thread_equal(const uv_thread_t* t1, const uv_thread_t* t2) {
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300 return pthread_equal(*t1, *t2);
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301 }
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302
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303 int uv_thread_setname(const char* name) {
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304 if (name == NULL)
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305 return UV_EINVAL;
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306 return uv__thread_setname(name);
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307 }
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308
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309 int uv_thread_getname(uv_thread_t* tid, char* name, size_t size) {
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310 if (name == NULL || size == 0)
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311 return UV_EINVAL;
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312
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313 return uv__thread_getname(tid, name, size);
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314 }
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315
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316 int uv_mutex_init(uv_mutex_t* mutex) {
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317 #if defined(NDEBUG) || !defined(PTHREAD_MUTEX_ERRORCHECK)
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318 return UV__ERR(pthread_mutex_init(mutex, NULL));
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319 #else
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320 pthread_mutexattr_t attr;
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321 int err;
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322
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323 if (pthread_mutexattr_init(&attr))
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324 abort();
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325
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326 if (pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_ERRORCHECK))
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327 abort();
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328
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329 err = pthread_mutex_init(mutex, &attr);
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330
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331 if (pthread_mutexattr_destroy(&attr))
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332 abort();
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333
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334 return UV__ERR(err);
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335 #endif
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336 }
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337
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338
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339 int uv_mutex_init_recursive(uv_mutex_t* mutex) {
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340 pthread_mutexattr_t attr;
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341 int err;
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342
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343 if (pthread_mutexattr_init(&attr))
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344 abort();
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345
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346 if (pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE))
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347 abort();
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348
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349 err = pthread_mutex_init(mutex, &attr);
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350
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351 if (pthread_mutexattr_destroy(&attr))
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352 abort();
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353
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354 return UV__ERR(err);
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355 }
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356
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357
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358 void uv_mutex_destroy(uv_mutex_t* mutex) {
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359 if (pthread_mutex_destroy(mutex))
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360 abort();
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361 }
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362
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363
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364 void uv_mutex_lock(uv_mutex_t* mutex) {
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365 if (pthread_mutex_lock(mutex))
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366 abort();
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367 }
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368
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369
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370 int uv_mutex_trylock(uv_mutex_t* mutex) {
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371 int err;
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372
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373 err = pthread_mutex_trylock(mutex);
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374 if (err) {
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375 if (err != EBUSY && err != EAGAIN)
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376 abort();
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377 return UV_EBUSY;
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378 }
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379
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380 return 0;
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381 }
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382
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383
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384 void uv_mutex_unlock(uv_mutex_t* mutex) {
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385 if (pthread_mutex_unlock(mutex))
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386 abort();
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387 }
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388
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389
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390 int uv_rwlock_init(uv_rwlock_t* rwlock) {
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391 return UV__ERR(pthread_rwlock_init(rwlock, NULL));
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392 }
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393
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394
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395 void uv_rwlock_destroy(uv_rwlock_t* rwlock) {
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396 if (pthread_rwlock_destroy(rwlock))
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397 abort();
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398 }
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399
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400
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401 void uv_rwlock_rdlock(uv_rwlock_t* rwlock) {
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402 if (pthread_rwlock_rdlock(rwlock))
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403 abort();
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404 }
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405
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406
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407 int uv_rwlock_tryrdlock(uv_rwlock_t* rwlock) {
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408 int err;
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409
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410 err = pthread_rwlock_tryrdlock(rwlock);
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411 if (err) {
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412 if (err != EBUSY && err != EAGAIN)
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413 abort();
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414 return UV_EBUSY;
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415 }
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416
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417 return 0;
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418 }
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419
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420
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421 void uv_rwlock_rdunlock(uv_rwlock_t* rwlock) {
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422 if (pthread_rwlock_unlock(rwlock))
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423 abort();
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424 }
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425
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426
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427 void uv_rwlock_wrlock(uv_rwlock_t* rwlock) {
|
|
|
428 if (pthread_rwlock_wrlock(rwlock))
|
|
|
429 abort();
|
|
|
430 }
|
|
|
431
|
|
|
432
|
|
|
433 int uv_rwlock_trywrlock(uv_rwlock_t* rwlock) {
|
|
|
434 int err;
|
|
|
435
|
|
|
436 err = pthread_rwlock_trywrlock(rwlock);
|
|
|
437 if (err) {
|
|
|
438 if (err != EBUSY && err != EAGAIN)
|
|
|
439 abort();
|
|
|
440 return UV_EBUSY;
|
|
|
441 }
|
|
|
442
|
|
|
443 return 0;
|
|
|
444 }
|
|
|
445
|
|
|
446
|
|
|
447 void uv_rwlock_wrunlock(uv_rwlock_t* rwlock) {
|
|
|
448 if (pthread_rwlock_unlock(rwlock))
|
|
|
449 abort();
|
|
|
450 }
|
|
|
451
|
|
|
452
|
|
|
453 void uv_once(uv_once_t* guard, void (*callback)(void)) {
|
|
|
454 if (pthread_once(guard, callback))
|
|
|
455 abort();
|
|
|
456 }
|
|
|
457
|
|
|
458 #if defined(__APPLE__) && defined(__MACH__)
|
|
|
459
|
|
|
460 int uv_sem_init(uv_sem_t* sem, unsigned int value) {
|
|
|
461 kern_return_t err;
|
|
|
462
|
|
|
463 err = semaphore_create(mach_task_self(), sem, SYNC_POLICY_FIFO, value);
|
|
|
464 if (err == KERN_SUCCESS)
|
|
|
465 return 0;
|
|
|
466 if (err == KERN_INVALID_ARGUMENT)
|
|
|
467 return UV_EINVAL;
|
|
|
468 if (err == KERN_RESOURCE_SHORTAGE)
|
|
|
469 return UV_ENOMEM;
|
|
|
470
|
|
|
471 abort();
|
|
|
472 return UV_EINVAL; /* Satisfy the compiler. */
|
|
|
473 }
|
|
|
474
|
|
|
475
|
|
|
476 void uv_sem_destroy(uv_sem_t* sem) {
|
|
|
477 if (semaphore_destroy(mach_task_self(), *sem))
|
|
|
478 abort();
|
|
|
479 }
|
|
|
480
|
|
|
481
|
|
|
482 void uv_sem_post(uv_sem_t* sem) {
|
|
|
483 if (semaphore_signal(*sem))
|
|
|
484 abort();
|
|
|
485 }
|
|
|
486
|
|
|
487
|
|
|
488 void uv_sem_wait(uv_sem_t* sem) {
|
|
|
489 int r;
|
|
|
490
|
|
|
491 do
|
|
|
492 r = semaphore_wait(*sem);
|
|
|
493 while (r == KERN_ABORTED);
|
|
|
494
|
|
|
495 if (r != KERN_SUCCESS)
|
|
|
496 abort();
|
|
|
497 }
|
|
|
498
|
|
|
499
|
|
|
500 int uv_sem_trywait(uv_sem_t* sem) {
|
|
|
501 mach_timespec_t interval;
|
|
|
502 kern_return_t err;
|
|
|
503
|
|
|
504 interval.tv_sec = 0;
|
|
|
505 interval.tv_nsec = 0;
|
|
|
506
|
|
|
507 err = semaphore_timedwait(*sem, interval);
|
|
|
508 if (err == KERN_SUCCESS)
|
|
|
509 return 0;
|
|
|
510 if (err == KERN_OPERATION_TIMED_OUT)
|
|
|
511 return UV_EAGAIN;
|
|
|
512
|
|
|
513 abort();
|
|
|
514 return UV_EINVAL; /* Satisfy the compiler. */
|
|
|
515 }
|
|
|
516
|
|
|
517 #else /* !(defined(__APPLE__) && defined(__MACH__)) */
|
|
|
518
|
|
|
519 #if defined(__GLIBC__) && !defined(__UCLIBC__)
|
|
|
520
|
|
|
521 /* Hack around https://sourceware.org/bugzilla/show_bug.cgi?id=12674
|
|
|
522 * by providing a custom implementation for glibc < 2.21 in terms of other
|
|
|
523 * concurrency primitives.
|
|
|
524 * Refs: https://github.com/nodejs/node/issues/19903 */
|
|
|
525
|
|
|
526 /* To preserve ABI compatibility, we treat the uv_sem_t as storage for
|
|
|
527 * a pointer to the actual struct we're using underneath. */
|
|
|
528
|
|
|
529 static uv_once_t glibc_version_check_once = UV_ONCE_INIT;
|
|
|
530 static int platform_needs_custom_semaphore = 0;
|
|
|
531
|
|
|
532 static void glibc_version_check(void) {
|
|
|
533 const char* version = gnu_get_libc_version();
|
|
|
534 platform_needs_custom_semaphore =
|
|
|
535 version[0] == '2' && version[1] == '.' &&
|
|
|
536 atoi(version + 2) < 21;
|
|
|
537 }
|
|
|
538
|
|
|
539 #elif defined(__MVS__)
|
|
|
540
|
|
|
541 #define platform_needs_custom_semaphore 1
|
|
|
542
|
|
|
543 #else /* !defined(__GLIBC__) && !defined(__MVS__) */
|
|
|
544
|
|
|
545 #define platform_needs_custom_semaphore 0
|
|
|
546
|
|
|
547 #endif
|
|
|
548
|
|
|
549 typedef struct uv_semaphore_s {
|
|
|
550 uv_mutex_t mutex;
|
|
|
551 uv_cond_t cond;
|
|
|
552 unsigned int value;
|
|
|
553 } uv_semaphore_t;
|
|
|
554
|
|
|
555 #if (defined(__GLIBC__) && !defined(__UCLIBC__)) || \
|
|
|
556 platform_needs_custom_semaphore
|
|
|
557 STATIC_ASSERT(sizeof(uv_sem_t) >= sizeof(uv_semaphore_t*));
|
|
|
558 #endif
|
|
|
559
|
|
|
560 static int uv__custom_sem_init(uv_sem_t* sem_, unsigned int value) {
|
|
|
561 int err;
|
|
|
562 uv_semaphore_t* sem;
|
|
|
563
|
|
|
564 sem = uv__malloc(sizeof(*sem));
|
|
|
565 if (sem == NULL)
|
|
|
566 return UV_ENOMEM;
|
|
|
567
|
|
|
568 if ((err = uv_mutex_init(&sem->mutex)) != 0) {
|
|
|
569 uv__free(sem);
|
|
|
570 return err;
|
|
|
571 }
|
|
|
572
|
|
|
573 if ((err = uv_cond_init(&sem->cond)) != 0) {
|
|
|
574 uv_mutex_destroy(&sem->mutex);
|
|
|
575 uv__free(sem);
|
|
|
576 return err;
|
|
|
577 }
|
|
|
578
|
|
|
579 sem->value = value;
|
|
|
580 *(uv_semaphore_t**)sem_ = sem;
|
|
|
581 return 0;
|
|
|
582 }
|
|
|
583
|
|
|
584
|
|
|
585 static void uv__custom_sem_destroy(uv_sem_t* sem_) {
|
|
|
586 uv_semaphore_t* sem;
|
|
|
587
|
|
|
588 sem = *(uv_semaphore_t**)sem_;
|
|
|
589 uv_cond_destroy(&sem->cond);
|
|
|
590 uv_mutex_destroy(&sem->mutex);
|
|
|
591 uv__free(sem);
|
|
|
592 }
|
|
|
593
|
|
|
594
|
|
|
595 static void uv__custom_sem_post(uv_sem_t* sem_) {
|
|
|
596 uv_semaphore_t* sem;
|
|
|
597
|
|
|
598 sem = *(uv_semaphore_t**)sem_;
|
|
|
599 uv_mutex_lock(&sem->mutex);
|
|
|
600 sem->value++;
|
|
|
601 if (sem->value == 1)
|
|
|
602 uv_cond_signal(&sem->cond); /* Release one to replace us. */
|
|
|
603 uv_mutex_unlock(&sem->mutex);
|
|
|
604 }
|
|
|
605
|
|
|
606
|
|
|
607 static void uv__custom_sem_wait(uv_sem_t* sem_) {
|
|
|
608 uv_semaphore_t* sem;
|
|
|
609
|
|
|
610 sem = *(uv_semaphore_t**)sem_;
|
|
|
611 uv_mutex_lock(&sem->mutex);
|
|
|
612 while (sem->value == 0)
|
|
|
613 uv_cond_wait(&sem->cond, &sem->mutex);
|
|
|
614 sem->value--;
|
|
|
615 uv_mutex_unlock(&sem->mutex);
|
|
|
616 }
|
|
|
617
|
|
|
618
|
|
|
619 static int uv__custom_sem_trywait(uv_sem_t* sem_) {
|
|
|
620 uv_semaphore_t* sem;
|
|
|
621
|
|
|
622 sem = *(uv_semaphore_t**)sem_;
|
|
|
623 if (uv_mutex_trylock(&sem->mutex) != 0)
|
|
|
624 return UV_EAGAIN;
|
|
|
625
|
|
|
626 if (sem->value == 0) {
|
|
|
627 uv_mutex_unlock(&sem->mutex);
|
|
|
628 return UV_EAGAIN;
|
|
|
629 }
|
|
|
630
|
|
|
631 sem->value--;
|
|
|
632 uv_mutex_unlock(&sem->mutex);
|
|
|
633
|
|
|
634 return 0;
|
|
|
635 }
|
|
|
636
|
|
|
637 static int uv__sem_init(uv_sem_t* sem, unsigned int value) {
|
|
|
638 if (sem_init(sem, 0, value))
|
|
|
639 return UV__ERR(errno);
|
|
|
640 return 0;
|
|
|
641 }
|
|
|
642
|
|
|
643
|
|
|
644 static void uv__sem_destroy(uv_sem_t* sem) {
|
|
|
645 if (sem_destroy(sem))
|
|
|
646 abort();
|
|
|
647 }
|
|
|
648
|
|
|
649
|
|
|
650 static void uv__sem_post(uv_sem_t* sem) {
|
|
|
651 if (sem_post(sem))
|
|
|
652 abort();
|
|
|
653 }
|
|
|
654
|
|
|
655
|
|
|
656 static void uv__sem_wait(uv_sem_t* sem) {
|
|
|
657 int r;
|
|
|
658
|
|
|
659 do
|
|
|
660 r = sem_wait(sem);
|
|
|
661 while (r == -1 && errno == EINTR);
|
|
|
662
|
|
|
663 if (r)
|
|
|
664 abort();
|
|
|
665 }
|
|
|
666
|
|
|
667
|
|
|
668 static int uv__sem_trywait(uv_sem_t* sem) {
|
|
|
669 int r;
|
|
|
670
|
|
|
671 do
|
|
|
672 r = sem_trywait(sem);
|
|
|
673 while (r == -1 && errno == EINTR);
|
|
|
674
|
|
|
675 if (r) {
|
|
|
676 if (errno == EAGAIN)
|
|
|
677 return UV_EAGAIN;
|
|
|
678 abort();
|
|
|
679 }
|
|
|
680
|
|
|
681 return 0;
|
|
|
682 }
|
|
|
683
|
|
|
684 int uv_sem_init(uv_sem_t* sem, unsigned int value) {
|
|
|
685 #if defined(__GLIBC__) && !defined(__UCLIBC__)
|
|
|
686 uv_once(&glibc_version_check_once, glibc_version_check);
|
|
|
687 #endif
|
|
|
688
|
|
|
689 if (platform_needs_custom_semaphore)
|
|
|
690 return uv__custom_sem_init(sem, value);
|
|
|
691 else
|
|
|
692 return uv__sem_init(sem, value);
|
|
|
693 }
|
|
|
694
|
|
|
695
|
|
|
696 void uv_sem_destroy(uv_sem_t* sem) {
|
|
|
697 if (platform_needs_custom_semaphore)
|
|
|
698 uv__custom_sem_destroy(sem);
|
|
|
699 else
|
|
|
700 uv__sem_destroy(sem);
|
|
|
701 }
|
|
|
702
|
|
|
703
|
|
|
704 void uv_sem_post(uv_sem_t* sem) {
|
|
|
705 if (platform_needs_custom_semaphore)
|
|
|
706 uv__custom_sem_post(sem);
|
|
|
707 else
|
|
|
708 uv__sem_post(sem);
|
|
|
709 }
|
|
|
710
|
|
|
711
|
|
|
712 void uv_sem_wait(uv_sem_t* sem) {
|
|
|
713 if (platform_needs_custom_semaphore)
|
|
|
714 uv__custom_sem_wait(sem);
|
|
|
715 else
|
|
|
716 uv__sem_wait(sem);
|
|
|
717 }
|
|
|
718
|
|
|
719
|
|
|
720 int uv_sem_trywait(uv_sem_t* sem) {
|
|
|
721 if (platform_needs_custom_semaphore)
|
|
|
722 return uv__custom_sem_trywait(sem);
|
|
|
723 else
|
|
|
724 return uv__sem_trywait(sem);
|
|
|
725 }
|
|
|
726
|
|
|
727 #endif /* defined(__APPLE__) && defined(__MACH__) */
|
|
|
728
|
|
|
729
|
|
|
730 #if defined(__APPLE__) && defined(__MACH__) || defined(__MVS__)
|
|
|
731
|
|
|
732 int uv_cond_init(uv_cond_t* cond) {
|
|
|
733 return UV__ERR(pthread_cond_init(cond, NULL));
|
|
|
734 }
|
|
|
735
|
|
|
736 #else /* !(defined(__APPLE__) && defined(__MACH__)) */
|
|
|
737
|
|
|
738 int uv_cond_init(uv_cond_t* cond) {
|
|
|
739 pthread_condattr_t attr;
|
|
|
740 int err;
|
|
|
741
|
|
|
742 err = pthread_condattr_init(&attr);
|
|
|
743 if (err)
|
|
|
744 return UV__ERR(err);
|
|
|
745
|
|
|
746 err = pthread_condattr_setclock(&attr, CLOCK_MONOTONIC);
|
|
|
747 if (err)
|
|
|
748 goto error2;
|
|
|
749
|
|
|
750 err = pthread_cond_init(cond, &attr);
|
|
|
751 if (err)
|
|
|
752 goto error2;
|
|
|
753
|
|
|
754 err = pthread_condattr_destroy(&attr);
|
|
|
755 if (err)
|
|
|
756 goto error;
|
|
|
757
|
|
|
758 return 0;
|
|
|
759
|
|
|
760 error:
|
|
|
761 pthread_cond_destroy(cond);
|
|
|
762 error2:
|
|
|
763 pthread_condattr_destroy(&attr);
|
|
|
764 return UV__ERR(err);
|
|
|
765 }
|
|
|
766
|
|
|
767 #endif /* defined(__APPLE__) && defined(__MACH__) */
|
|
|
768
|
|
|
769 void uv_cond_destroy(uv_cond_t* cond) {
|
|
|
770 #if defined(__APPLE__) && defined(__MACH__)
|
|
|
771 /* It has been reported that destroying condition variables that have been
|
|
|
772 * signalled but not waited on can sometimes result in application crashes.
|
|
|
773 * See https://codereview.chromium.org/1323293005.
|
|
|
774 */
|
|
|
775 pthread_mutex_t mutex;
|
|
|
776 struct timespec ts;
|
|
|
777 int err;
|
|
|
778
|
|
|
779 if (pthread_mutex_init(&mutex, NULL))
|
|
|
780 abort();
|
|
|
781
|
|
|
782 if (pthread_mutex_lock(&mutex))
|
|
|
783 abort();
|
|
|
784
|
|
|
785 ts.tv_sec = 0;
|
|
|
786 ts.tv_nsec = 1;
|
|
|
787
|
|
|
788 err = pthread_cond_timedwait_relative_np(cond, &mutex, &ts);
|
|
|
789 if (err != 0 && err != ETIMEDOUT)
|
|
|
790 abort();
|
|
|
791
|
|
|
792 if (pthread_mutex_unlock(&mutex))
|
|
|
793 abort();
|
|
|
794
|
|
|
795 if (pthread_mutex_destroy(&mutex))
|
|
|
796 abort();
|
|
|
797 #endif /* defined(__APPLE__) && defined(__MACH__) */
|
|
|
798
|
|
|
799 if (pthread_cond_destroy(cond))
|
|
|
800 abort();
|
|
|
801 }
|
|
|
802
|
|
|
803 void uv_cond_signal(uv_cond_t* cond) {
|
|
|
804 if (pthread_cond_signal(cond))
|
|
|
805 abort();
|
|
|
806 }
|
|
|
807
|
|
|
808 void uv_cond_broadcast(uv_cond_t* cond) {
|
|
|
809 if (pthread_cond_broadcast(cond))
|
|
|
810 abort();
|
|
|
811 }
|
|
|
812
|
|
|
813 #if defined(__APPLE__) && defined(__MACH__)
|
|
|
814
|
|
|
815 void uv_cond_wait(uv_cond_t* cond, uv_mutex_t* mutex) {
|
|
|
816 int r;
|
|
|
817
|
|
|
818 errno = 0;
|
|
|
819 r = pthread_cond_wait(cond, mutex);
|
|
|
820
|
|
|
821 /* Workaround for a bug in OS X at least up to 13.6
|
|
|
822 * See https://github.com/libuv/libuv/issues/4165
|
|
|
823 */
|
|
|
824 if (r == EINVAL)
|
|
|
825 if (errno == EBUSY)
|
|
|
826 return;
|
|
|
827
|
|
|
828 if (r)
|
|
|
829 abort();
|
|
|
830 }
|
|
|
831
|
|
|
832 #else /* !(defined(__APPLE__) && defined(__MACH__)) */
|
|
|
833
|
|
|
834 void uv_cond_wait(uv_cond_t* cond, uv_mutex_t* mutex) {
|
|
|
835 if (pthread_cond_wait(cond, mutex))
|
|
|
836 abort();
|
|
|
837 }
|
|
|
838
|
|
|
839 #endif
|
|
|
840
|
|
|
841 int uv_cond_timedwait(uv_cond_t* cond, uv_mutex_t* mutex, uint64_t timeout) {
|
|
|
842 int r;
|
|
|
843 struct timespec ts;
|
|
|
844 #if defined(__MVS__)
|
|
|
845 struct timeval tv;
|
|
|
846 #endif
|
|
|
847
|
|
|
848 #if defined(__APPLE__) && defined(__MACH__)
|
|
|
849 ts.tv_sec = timeout / NANOSEC;
|
|
|
850 ts.tv_nsec = timeout % NANOSEC;
|
|
|
851 r = pthread_cond_timedwait_relative_np(cond, mutex, &ts);
|
|
|
852 #else
|
|
|
853 #if defined(__MVS__)
|
|
|
854 if (gettimeofday(&tv, NULL))
|
|
|
855 abort();
|
|
|
856 timeout += tv.tv_sec * NANOSEC + tv.tv_usec * 1e3;
|
|
|
857 #else
|
|
|
858 timeout += uv__hrtime(UV_CLOCK_PRECISE);
|
|
|
859 #endif
|
|
|
860 ts.tv_sec = timeout / NANOSEC;
|
|
|
861 ts.tv_nsec = timeout % NANOSEC;
|
|
|
862 r = pthread_cond_timedwait(cond, mutex, &ts);
|
|
|
863 #endif
|
|
|
864
|
|
|
865
|
|
|
866 if (r == 0)
|
|
|
867 return 0;
|
|
|
868
|
|
|
869 if (r == ETIMEDOUT)
|
|
|
870 return UV_ETIMEDOUT;
|
|
|
871
|
|
|
872 abort();
|
|
|
873 #ifndef __SUNPRO_C
|
|
|
874 return UV_EINVAL; /* Satisfy the compiler. */
|
|
|
875 #endif
|
|
|
876 }
|
|
|
877
|
|
|
878
|
|
|
879 int uv_key_create(uv_key_t* key) {
|
|
|
880 return UV__ERR(pthread_key_create(key, NULL));
|
|
|
881 }
|
|
|
882
|
|
|
883
|
|
|
884 void uv_key_delete(uv_key_t* key) {
|
|
|
885 if (pthread_key_delete(*key))
|
|
|
886 abort();
|
|
|
887 }
|
|
|
888
|
|
|
889
|
|
|
890 void* uv_key_get(uv_key_t* key) {
|
|
|
891 return pthread_getspecific(*key);
|
|
|
892 }
|
|
|
893
|
|
|
894
|
|
|
895 void uv_key_set(uv_key_t* key, void* value) {
|
|
|
896 if (pthread_setspecific(*key, value))
|
|
|
897 abort();
|
|
|
898 }
|
|
|
899
|
|
|
900 #if defined(_AIX) || defined(__MVS__) || defined(__PASE__)
|
|
|
901 int uv__thread_setname(const char* name) {
|
|
|
902 return UV_ENOSYS;
|
|
|
903 }
|
|
|
904 #elif defined(__APPLE__)
|
|
|
905 int uv__thread_setname(const char* name) {
|
|
|
906 char namebuf[UV_PTHREAD_MAX_NAMELEN_NP];
|
|
|
907 strncpy(namebuf, name, sizeof(namebuf) - 1);
|
|
|
908 namebuf[sizeof(namebuf) - 1] = '\0';
|
|
|
909 int err = pthread_setname_np(namebuf);
|
|
|
910 if (err)
|
|
|
911 return UV__ERR(errno);
|
|
|
912 return 0;
|
|
|
913 }
|
|
|
914 #elif defined(__NetBSD__)
|
|
|
915 int uv__thread_setname(const char* name) {
|
|
|
916 char namebuf[UV_PTHREAD_MAX_NAMELEN_NP];
|
|
|
917 strncpy(namebuf, name, sizeof(namebuf) - 1);
|
|
|
918 namebuf[sizeof(namebuf) - 1] = '\0';
|
|
|
919 return UV__ERR(pthread_setname_np(pthread_self(), "%s", namebuf));
|
|
|
920 }
|
|
|
921 #elif defined(__OpenBSD__)
|
|
|
922 int uv__thread_setname(const char* name) {
|
|
|
923 char namebuf[UV_PTHREAD_MAX_NAMELEN_NP];
|
|
|
924 strncpy(namebuf, name, sizeof(namebuf) - 1);
|
|
|
925 namebuf[sizeof(namebuf) - 1] = '\0';
|
|
|
926 pthread_set_name_np(pthread_self(), namebuf);
|
|
|
927 return 0;
|
|
|
928 }
|
|
|
929 #else
|
|
|
930 int uv__thread_setname(const char* name) {
|
|
|
931 char namebuf[UV_PTHREAD_MAX_NAMELEN_NP];
|
|
|
932 strncpy(namebuf, name, sizeof(namebuf) - 1);
|
|
|
933 namebuf[sizeof(namebuf) - 1] = '\0';
|
|
|
934 return UV__ERR(pthread_setname_np(pthread_self(), namebuf));
|
|
|
935 }
|
|
|
936 #endif
|
|
|
937
|
|
|
938 #if (defined(__ANDROID_API__) && __ANDROID_API__ < 26) || \
|
|
|
939 defined(_AIX) || \
|
|
|
940 defined(__MVS__) || \
|
|
|
941 defined(__PASE__)
|
|
|
942 int uv__thread_getname(uv_thread_t* tid, char* name, size_t size) {
|
|
|
943 return UV_ENOSYS;
|
|
|
944 }
|
|
|
945 #elif defined(__OpenBSD__)
|
|
|
946 int uv__thread_getname(uv_thread_t* tid, char* name, size_t size) {
|
|
|
947 char thread_name[UV_PTHREAD_MAX_NAMELEN_NP];
|
|
|
948 pthread_get_name_np(*tid, thread_name, sizeof(thread_name));
|
|
|
949 strncpy(name, thread_name, size - 1);
|
|
|
950 name[size - 1] = '\0';
|
|
|
951 return 0;
|
|
|
952 }
|
|
|
953 #elif defined(__APPLE__)
|
|
|
954 int uv__thread_getname(uv_thread_t* tid, char* name, size_t size) {
|
|
|
955 char thread_name[UV_PTHREAD_MAX_NAMELEN_NP];
|
|
|
956 if (pthread_getname_np(*tid, thread_name, sizeof(thread_name)) != 0)
|
|
|
957 return UV__ERR(errno);
|
|
|
958
|
|
|
959 strncpy(name, thread_name, size - 1);
|
|
|
960 name[size - 1] = '\0';
|
|
|
961 return 0;
|
|
|
962 }
|
|
|
963 #else
|
|
|
964 int uv__thread_getname(uv_thread_t* tid, char* name, size_t size) {
|
|
|
965 int r;
|
|
|
966 char thread_name[UV_PTHREAD_MAX_NAMELEN_NP];
|
|
|
967 r = pthread_getname_np(*tid, thread_name, sizeof(thread_name));
|
|
|
968 if (r != 0)
|
|
|
969 return UV__ERR(r);
|
|
|
970
|
|
|
971 strncpy(name, thread_name, size - 1);
|
|
|
972 name[size - 1] = '\0';
|
|
|
973 return 0;
|
|
|
974 }
|
|
|
975 #endif
|
