Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_pthread_thread.c @ 5860:c9787372f16d
Limit conn: use complex value in limit_conn_zone (ticket #121).
One intentional side effect of this change is that key is allowed only
in the first position. Previously, it was possible to specify the key
variable at any position, but that was never documented, and is contrary
to nginx configuration practice for positional parameters.
author | Valentin Bartenev <vbart@nginx.com> |
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date | Wed, 24 Sep 2014 21:55:19 +0400 |
parents | d620f497c50f |
children |
rev | line source |
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376
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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 |
4412 | 4 * Copyright (C) Nginx, Inc. |
376
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5 */ |
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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 |
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11 |
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12 static ngx_uint_t nthreads; |
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13 static ngx_uint_t max_threads; |
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14 |
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15 |
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16 static pthread_attr_t thr_attr; |
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17 |
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18 |
563 | 19 ngx_err_t |
20 ngx_create_thread(ngx_tid_t *tid, ngx_thread_value_t (*func)(void *arg), | |
21 void *arg, ngx_log_t *log) | |
376
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22 { |
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23 int err; |
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24 |
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25 if (nthreads >= max_threads) { |
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26 ngx_log_error(NGX_LOG_CRIT, log, 0, |
461 | 27 "no more than %ui threads can be created", max_threads); |
376
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28 return NGX_ERROR; |
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29 } |
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30 |
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31 err = pthread_create(tid, &thr_attr, func, arg); |
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32 |
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33 if (err != 0) { |
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34 ngx_log_error(NGX_LOG_ALERT, log, err, "pthread_create() failed"); |
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35 return err; |
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36 } |
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37 |
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38 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0, |
461 | 39 "thread is created: " NGX_TID_T_FMT, *tid); |
376
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40 |
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41 nthreads++; |
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42 |
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43 return err; |
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44 } |
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45 |
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46 |
563 | 47 ngx_int_t |
48 ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle) | |
577 | 49 { |
376
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50 int err; |
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51 |
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52 max_threads = n; |
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53 |
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54 err = pthread_attr_init(&thr_attr); |
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55 |
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56 if (err != 0) { |
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57 ngx_log_error(NGX_LOG_ALERT, cycle->log, err, |
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58 "pthread_attr_init() failed"); |
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59 return NGX_ERROR; |
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60 } |
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61 |
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62 err = pthread_attr_setstacksize(&thr_attr, size); |
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63 |
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64 if (err != 0) { |
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65 ngx_log_error(NGX_LOG_ALERT, cycle->log, err, |
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66 "pthread_attr_setstacksize() failed"); |
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67 return NGX_ERROR; |
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68 } |
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69 |
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70 ngx_threaded = 1; |
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71 |
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72 return NGX_OK; |
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73 } |
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74 |
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75 |
563 | 76 ngx_mutex_t * |
77 ngx_mutex_init(ngx_log_t *log, ngx_uint_t flags) | |
376
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78 { |
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79 int err; |
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80 ngx_mutex_t *m; |
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81 |
501 | 82 m = ngx_alloc(sizeof(ngx_mutex_t), log); |
83 if (m == NULL) { | |
376
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84 return NULL; |
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85 } |
577 | 86 |
376
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87 m->log = log; |
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88 |
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89 err = pthread_mutex_init(&m->mutex, NULL); |
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90 |
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91 if (err != 0) { |
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92 ngx_log_error(NGX_LOG_ALERT, m->log, err, |
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93 "pthread_mutex_init() failed"); |
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94 return NULL; |
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95 } |
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96 |
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97 return m; |
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98 } |
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99 |
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100 |
563 | 101 void |
102 ngx_mutex_destroy(ngx_mutex_t *m) | |
376
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103 { |
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104 int err; |
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105 |
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106 err = pthread_mutex_destroy(&m->mutex); |
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107 |
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108 if (err != 0) { |
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109 ngx_log_error(NGX_LOG_ALERT, m->log, err, |
461 | 110 "pthread_mutex_destroy(%p) failed", m); |
376
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111 } |
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112 |
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113 ngx_free(m); |
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114 } |
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115 |
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116 |
563 | 117 void |
118 ngx_mutex_lock(ngx_mutex_t *m) | |
376
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119 { |
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120 int err; |
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121 |
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122 if (!ngx_threaded) { |
563 | 123 return; |
376
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124 } |
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125 |
461 | 126 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "lock mutex %p", m); |
376
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parents:
diff
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127 |
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128 err = pthread_mutex_lock(&m->mutex); |
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parents:
diff
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129 |
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130 if (err != 0) { |
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parents:
diff
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131 ngx_log_error(NGX_LOG_ALERT, m->log, err, |
461 | 132 "pthread_mutex_lock(%p) failed", m); |
563 | 133 ngx_abort(); |
376
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parents:
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134 } |
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parents:
diff
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135 |
461 | 136 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "mutex %p is locked", m); |
376
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parents:
diff
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137 |
563 | 138 return; |
376
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parents:
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139 } |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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140 |
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parents:
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141 |
563 | 142 ngx_int_t |
143 ngx_mutex_trylock(ngx_mutex_t *m) | |
376
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Igor Sysoev <igor@sysoev.ru>
parents:
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144 { |
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145 int err; |
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146 |
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147 if (!ngx_threaded) { |
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148 return NGX_OK; |
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Igor Sysoev <igor@sysoev.ru>
parents:
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149 } |
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parents:
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150 |
461 | 151 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "try lock mutex %p", m); |
376
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parents:
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152 |
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153 err = pthread_mutex_trylock(&m->mutex); |
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parents:
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154 |
391
b670db10cbbd
nginx-0.0.7-2004-07-14-20:01:42 import
Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
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155 if (err == NGX_EBUSY) { |
b670db10cbbd
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Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
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156 return NGX_AGAIN; |
b670db10cbbd
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Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
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157 } |
b670db10cbbd
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Igor Sysoev <igor@sysoev.ru>
parents:
379
diff
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|
158 |
376
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Igor Sysoev <igor@sysoev.ru>
parents:
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159 if (err != 0) { |
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Igor Sysoev <igor@sysoev.ru>
parents:
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160 ngx_log_error(NGX_LOG_ALERT, m->log, err, |
461 | 161 "pthread_mutex_trylock(%p) failed", m); |
563 | 162 ngx_abort(); |
376
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Igor Sysoev <igor@sysoev.ru>
parents:
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163 } |
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Igor Sysoev <igor@sysoev.ru>
parents:
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164 |
461 | 165 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "mutex %p is locked", m); |
376
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parents:
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166 |
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167 return NGX_OK; |
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Igor Sysoev <igor@sysoev.ru>
parents:
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168 } |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
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169 |
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170 |
563 | 171 void |
172 ngx_mutex_unlock(ngx_mutex_t *m) | |
376
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173 { |
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174 int err; |
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175 |
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176 if (!ngx_threaded) { |
563 | 177 return; |
376
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Igor Sysoev <igor@sysoev.ru>
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178 } |
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parents:
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179 |
461 | 180 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "unlock mutex %p", m); |
376
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181 |
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182 err = pthread_mutex_unlock(&m->mutex); |
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183 |
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184 if (err != 0) { |
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Igor Sysoev <igor@sysoev.ru>
parents:
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185 ngx_log_error(NGX_LOG_ALERT, m->log, err, |
461 | 186 "pthread_mutex_unlock(%p) failed", m); |
563 | 187 ngx_abort(); |
376
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188 } |
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Igor Sysoev <igor@sysoev.ru>
parents:
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|
189 |
461 | 190 ngx_log_debug1(NGX_LOG_DEBUG_MUTEX, m->log, 0, "mutex %p is unlocked", m); |
376
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Igor Sysoev <igor@sysoev.ru>
parents:
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|
191 |
563 | 192 return; |
376
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Igor Sysoev <igor@sysoev.ru>
parents:
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193 } |
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parents:
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194 |
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195 |
563 | 196 ngx_cond_t * |
197 ngx_cond_init(ngx_log_t *log) | |
376
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198 { |
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199 int err; |
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200 ngx_cond_t *cv; |
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diff
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201 |
501 | 202 cv = ngx_alloc(sizeof(ngx_cond_t), log); |
203 if (cv == NULL) { | |
376
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204 return NULL; |
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Igor Sysoev <igor@sysoev.ru>
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205 } |
577 | 206 |
376
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Igor Sysoev <igor@sysoev.ru>
parents:
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207 cv->log = log; |
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208 |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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209 err = pthread_cond_init(&cv->cond, NULL); |
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Igor Sysoev <igor@sysoev.ru>
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210 |
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Igor Sysoev <igor@sysoev.ru>
parents:
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211 if (err != 0) { |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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212 ngx_log_error(NGX_LOG_ALERT, cv->log, err, |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
213 "pthread_cond_init() failed"); |
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Igor Sysoev <igor@sysoev.ru>
parents:
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214 return NULL; |
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Igor Sysoev <igor@sysoev.ru>
parents:
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|
215 } |
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parents:
diff
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|
216 |
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217 return cv; |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
218 } |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
219 |
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220 |
563 | 221 void |
222 ngx_cond_destroy(ngx_cond_t *cv) | |
376
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
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diff
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223 { |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
224 int err; |
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
225 |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
226 err = pthread_cond_destroy(&cv->cond); |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
227 |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
228 if (err != 0) { |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
229 ngx_log_error(NGX_LOG_ALERT, cv->log, err, |
461 | 230 "pthread_cond_destroy(%p) failed", cv); |
376
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
231 } |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
232 |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
233 ngx_free(cv); |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
234 } |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
235 |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
236 |
563 | 237 ngx_int_t |
238 ngx_cond_wait(ngx_cond_t *cv, ngx_mutex_t *m) | |
376
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
239 { |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
240 int err; |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
241 |
461 | 242 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p wait", cv); |
376
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
243 |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
244 err = pthread_cond_wait(&cv->cond, &m->mutex); |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
245 |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
246 if (err != 0) { |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
247 ngx_log_error(NGX_LOG_ALERT, cv->log, err, |
461 | 248 "pthread_cond_wait(%p) failed", cv); |
376
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Igor Sysoev <igor@sysoev.ru>
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diff
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249 return NGX_ERROR; |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
250 } |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
251 |
461 | 252 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p is waked up", cv); |
376
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
253 |
461 | 254 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>
parents:
diff
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|
255 |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
256 return NGX_OK; |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
257 } |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
258 |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
259 |
563 | 260 ngx_int_t |
261 ngx_cond_signal(ngx_cond_t *cv) | |
376
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
262 { |
d0451e402e27
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Igor Sysoev <igor@sysoev.ru>
parents:
diff
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|
263 int err; |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
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264 |
461 | 265 ngx_log_debug1(NGX_LOG_DEBUG_CORE, cv->log, 0, "cv %p to signal", cv); |
376
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nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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266 |
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nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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267 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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268 |
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nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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269 if (err != 0) { |
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nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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270 ngx_log_error(NGX_LOG_ALERT, cv->log, err, |
461 | 271 "pthread_cond_signal(%p) failed", cv); |
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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272 return NGX_ERROR; |
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nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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273 } |
d0451e402e27
nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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274 |
461 | 275 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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276 |
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nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
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277 return NGX_OK; |
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nginx-0.0.7-2004-07-05-10:55:54 import
Igor Sysoev <igor@sysoev.ru>
parents:
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278 } |