Mercurial > hg > nginx
annotate src/os/unix/ngx_pthread_thread.c @ 1937:c46432b9dbb7
fix case when errors are not cached,
and a file was not used often enough to keep open
and it has been removed before it was kept open
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Thu, 13 Mar 2008 12:59:25 +0000 |
parents | 4d9ea73a627a |
children | d620f497c50f |
rev | line source |
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376
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nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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1 |
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2 /* |
444
42d11f017717
nginx-0.1.0-2004-09-29-20:00:49 import; remove years from copyright
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3 * Copyright (C) Igor Sysoev |
376
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4 */ |
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5 |
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6 |
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7 #include <ngx_config.h> |
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nginx-0.0.7-2004-07-05-10:55:54 import
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8 #include <ngx_core.h> |
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9 |
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10 |
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11 static ngx_uint_t nthreads; |
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12 static ngx_uint_t max_threads; |
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13 |
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14 |
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nginx-0.0.7-2004-07-05-10:55:54 import
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15 static pthread_attr_t thr_attr; |
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16 |
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17 |
563 | 18 ngx_err_t |
19 ngx_create_thread(ngx_tid_t *tid, ngx_thread_value_t (*func)(void *arg), | |
20 void *arg, ngx_log_t *log) | |
376
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21 { |
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22 int err; |
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23 |
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24 if (nthreads >= max_threads) { |
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25 ngx_log_error(NGX_LOG_CRIT, log, 0, |
461 | 26 "no more than %ui threads can be created", max_threads); |
376
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27 return NGX_ERROR; |
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28 } |
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29 |
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30 err = pthread_create(tid, &thr_attr, func, arg); |
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31 |
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32 if (err != 0) { |
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33 ngx_log_error(NGX_LOG_ALERT, log, err, "pthread_create() failed"); |
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34 return err; |
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35 } |
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36 |
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37 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, |
461 | 38 "thread is created: " NGX_TID_T_FMT, *tid); |
376
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39 |
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40 nthreads++; |
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41 |
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42 return err; |
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43 } |
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44 |
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45 |
563 | 46 ngx_int_t |
47 ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle) | |
577 | 48 { |
376
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49 int err; |
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50 |
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51 max_threads = n; |
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52 |
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53 err = pthread_attr_init(&thr_attr); |
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54 |
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55 if (err != 0) { |
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56 ngx_log_error(NGX_LOG_ALERT, cycle->log, err, |
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57 "pthread_attr_init() failed"); |
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58 return NGX_ERROR; |
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59 } |
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60 |
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61 err = pthread_attr_setstacksize(&thr_attr, size); |
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62 |
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63 if (err != 0) { |
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64 ngx_log_error(NGX_LOG_ALERT, cycle->log, err, |
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65 "pthread_attr_setstacksize() failed"); |
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66 return NGX_ERROR; |
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67 } |
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68 |
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69 ngx_threaded = 1; |
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70 |
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71 return NGX_OK; |
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72 } |
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73 |
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74 |
563 | 75 ngx_mutex_t * |
76 ngx_mutex_init(ngx_log_t *log, ngx_uint_t flags) | |
376
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77 { |
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78 int err; |
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79 ngx_mutex_t *m; |
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80 |
501 | 81 m = ngx_alloc(sizeof(ngx_mutex_t), log); |
82 if (m == NULL) { | |
376
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83 return NULL; |
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84 } |
577 | 85 |
376
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86 m->log = log; |
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87 |
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88 err = pthread_mutex_init(&m->mutex, NULL); |
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89 |
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90 if (err != 0) { |
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91 ngx_log_error(NGX_LOG_ALERT, m->log, err, |
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92 "pthread_mutex_init() failed"); |
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93 return NULL; |
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94 } |
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95 |
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96 return m; |
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97 } |
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98 |
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99 |
563 | 100 void |
101 ngx_mutex_destroy(ngx_mutex_t *m) | |
376
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102 { |
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103 int err; |
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104 |
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105 err = pthread_mutex_destroy(&m->mutex); |
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106 |
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107 if (err != 0) { |
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108 ngx_log_error(NGX_LOG_ALERT, m->log, err, |
461 | 109 "pthread_mutex_destroy(%p) failed", m); |
376
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110 } |
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111 |
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112 ngx_free(m); |
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113 } |
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114 |
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115 |
563 | 116 void |
117 ngx_mutex_lock(ngx_mutex_t *m) | |
376
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118 { |
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119 int err; |
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120 |
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121 if (!ngx_threaded) { |
563 | 122 return; |
376
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123 } |
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124 |
461 | 125 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "lock mutex %p", m); |
376
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126 |
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127 err = pthread_mutex_lock(&m->mutex); |
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128 |
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129 if (err != 0) { |
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130 ngx_log_error(NGX_LOG_ALERT, m->log, err, |
461 | 131 "pthread_mutex_lock(%p) failed", m); |
563 | 132 ngx_abort(); |
376
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133 } |
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parents:
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134 |
461 | 135 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "mutex %p is locked", m); |
376
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136 |
563 | 137 return; |
376
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138 } |
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139 |
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140 |
563 | 141 ngx_int_t |
142 ngx_mutex_trylock(ngx_mutex_t *m) | |
376
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143 { |
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144 int err; |
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145 |
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146 if (!ngx_threaded) { |
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147 return NGX_OK; |
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148 } |
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149 |
461 | 150 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "try lock mutex %p", m); |
376
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151 |
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152 err = pthread_mutex_trylock(&m->mutex); |
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153 |
391
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parents:
379
diff
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154 if (err == NGX_EBUSY) { |
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Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
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155 return NGX_AGAIN; |
b670db10cbbd
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Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
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156 } |
b670db10cbbd
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Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
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157 |
376
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158 if (err != 0) { |
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159 ngx_log_error(NGX_LOG_ALERT, m->log, err, |
461 | 160 "pthread_mutex_trylock(%p) failed", m); |
563 | 161 ngx_abort(); |
376
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162 } |
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163 |
461 | 164 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "mutex %p is locked", m); |
376
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165 |
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166 return NGX_OK; |
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167 } |
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168 |
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169 |
563 | 170 void |
171 ngx_mutex_unlock(ngx_mutex_t *m) | |
376
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172 { |
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173 int err; |
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174 |
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175 if (!ngx_threaded) { |
563 | 176 return; |
376
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177 } |
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178 |
461 | 179 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "unlock mutex %p", m); |
376
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180 |
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181 err = pthread_mutex_unlock(&m->mutex); |
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182 |
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183 if (err != 0) { |
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184 ngx_log_error(NGX_LOG_ALERT, m->log, err, |
461 | 185 "pthread_mutex_unlock(%p) failed", m); |
563 | 186 ngx_abort(); |
376
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187 } |
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188 |
461 | 189 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "mutex %p is unlocked", m); |
376
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190 |
563 | 191 return; |
376
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192 } |
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193 |
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194 |
563 | 195 ngx_cond_t * |
196 ngx_cond_init(ngx_log_t *log) | |
376
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197 { |
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198 int err; |
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199 ngx_cond_t *cv; |
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200 |
501 | 201 cv = ngx_alloc(sizeof(ngx_cond_t), log); |
202 if (cv == NULL) { | |
376
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203 return NULL; |
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204 } |
577 | 205 |
376
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206 cv->log = log; |
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207 |
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208 err = pthread_cond_init(&cv->cond, NULL); |
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209 |
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210 if (err != 0) { |
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Igor Sysoev <igor@sysoev.ru>
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diff
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211 ngx_log_error(NGX_LOG_ALERT, cv->log, err, |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
212 "pthread_cond_init() failed"); |
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Igor Sysoev <igor@sysoev.ru>
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213 return NULL; |
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214 } |
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215 |
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216 return cv; |
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217 } |
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218 |
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219 |
563 | 220 void |
221 ngx_cond_destroy(ngx_cond_t *cv) | |
376
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222 { |
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223 int err; |
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224 |
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diff
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225 err = pthread_cond_destroy(&cv->cond); |
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Igor Sysoev <igor@sysoev.ru>
parents:
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226 |
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Igor Sysoev <igor@sysoev.ru>
parents:
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227 if (err != 0) { |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
228 ngx_log_error(NGX_LOG_ALERT, cv->log, err, |
461 | 229 "pthread_cond_destroy(%p) failed", cv); |
376
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diff
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|
230 } |
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parents:
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|
231 |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
232 ngx_free(cv); |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
233 } |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
234 |
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parents:
diff
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|
235 |
563 | 236 ngx_int_t |
237 ngx_cond_wait(ngx_cond_t *cv, ngx_mutex_t *m) | |
376
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Igor Sysoev <igor@sysoev.ru>
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diff
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|
238 { |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
239 int err; |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
240 |
461 | 241 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p wait", cv); |
376
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Igor Sysoev <igor@sysoev.ru>
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diff
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|
242 |
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Igor Sysoev <igor@sysoev.ru>
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diff
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|
243 err = pthread_cond_wait(&cv->cond, &m->mutex); |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
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diff
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|
244 |
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Igor Sysoev <igor@sysoev.ru>
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245 if (err != 0) { |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
246 ngx_log_error(NGX_LOG_ALERT, cv->log, err, |
461 | 247 "pthread_cond_wait(%p) failed", cv); |
376
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248 return NGX_ERROR; |
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diff
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|
249 } |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
250 |
461 | 251 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p is waked up", cv); |
376
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
252 |
461 | 253 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "mutex %p is locked", m); |
376
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Igor Sysoev <igor@sysoev.ru>
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diff
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|
254 |
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255 return NGX_OK; |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
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diff
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|
256 } |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
257 |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
258 |
563 | 259 ngx_int_t |
260 ngx_cond_signal(ngx_cond_t *cv) | |
376
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
261 { |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
262 int err; |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
263 |
461 | 264 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p to signal", cv); |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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265 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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266 err = pthread_cond_signal(&cv->cond); |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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267 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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268 if (err != 0) { |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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269 ngx_log_error(NGX_LOG_ALERT, cv->log, err, |
461 | 270 "pthread_cond_signal(%p) failed", cv); |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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271 return NGX_ERROR; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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272 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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273 |
461 | 274 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p is signaled", cv); |
376
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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275 |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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276 return NGX_OK; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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277 } |