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annotate src/os/unix/ngx_thread_cond.c @ 6018:466bd63b63d1

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Thread pools implementation.
author Valentin Bartenev <vbart@nginx.com>
date Sat, 14 Mar 2015 17:37:07 +0300
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children 022ea0d17177
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6018
466bd63b63d1 Thread pools implementation.
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 * Copyright (C) Nginx, Inc.
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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 ngx_int_t
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13 ngx_thread_cond_create(ngx_thread_cond_t *cond, ngx_log_t *log)
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14 {
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15 ngx_err_t err;
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16
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17 err = pthread_cond_init(cond, NULL);
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18 if (err == 0) {
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19 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0,
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20 "pthread_cond_init(%p)", cond);
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21 return NGX_OK;
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22 }
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23
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24 ngx_log_error(NGX_LOG_EMERG, log, err, "pthread_cond_init() failed");
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25 return NGX_ERROR;
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26 }
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27
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28
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29 ngx_int_t
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30 ngx_thread_cond_destroy(ngx_thread_cond_t *cond, ngx_log_t *log)
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31 {
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32 ngx_err_t err;
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33
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34 err = pthread_cond_destroy(cond);
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35 if (err == 0) {
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36 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0,
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37 "pthread_cond_destroy(%p)", cond);
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38 return NGX_OK;
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39 }
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40
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41 ngx_log_error(NGX_LOG_EMERG, log, err, "pthread_cond_destroy() failed");
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42 return NGX_ERROR;
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43 }
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44
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45
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46 ngx_int_t
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47 ngx_thread_cond_signal(ngx_thread_cond_t *cond, ngx_log_t *log)
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48 {
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49 ngx_err_t err;
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50
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51 err = pthread_cond_signal(cond);
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52 if (err == 0) {
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53 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0,
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54 "pthread_cond_signal(%p)", cond);
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55 return NGX_OK;
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56 }
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57
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58 ngx_log_error(NGX_LOG_EMERG, log, err, "pthread_cond_signal() failed");
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59 return NGX_ERROR;
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60 }
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61
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62
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63 ngx_int_t
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64 ngx_thread_cond_wait(ngx_thread_cond_t *cond, ngx_thread_mutex_t *mtx,
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65 ngx_log_t *log)
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66 {
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67 ngx_err_t err;
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68
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69 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0,
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70 "pthread_cond_wait(%p) enter", cond);
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71
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72 err = pthread_cond_wait(cond, mtx);
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73
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74 #if 0
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75 ngx_time_update();
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76 #endif
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77
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78 if (err == 0) {
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79 ngx_log_debug1(NGX_LOG_DEBUG_CORE, log, 0,
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80 "pthread_cond_wait(%p) exit", cond);
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81 return NGX_OK;
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82 }
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83
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84 ngx_log_error(NGX_LOG_ALERT, log, err, "pthread_cond_wait() failed");
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85
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86 return NGX_ERROR;
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87 }