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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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5
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6
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7 #ifndef _NGX_THREAD_H_INCLUDED_
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8 #define _NGX_THREAD_H_INCLUDED_
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9
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10
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13
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14 #if (NGX_THREADS)
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15
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16 #define NGX_MAX_THREADS 128
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17
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18 #if (NGX_USE_RFORK)
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19 #include <ngx_freebsd_rfork_thread.h>
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20
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21
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22 #else /* use pthreads */
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23
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24 #include <pthread.h>
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25
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26 typedef pthread_t ngx_tid_t;
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27
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28 #define ngx_thread_self() pthread_self()
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29 #define ngx_log_tid (int) ngx_thread_self()
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30
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4
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31 #if (NGX_FREEBSD) && !(NGX_LINUXTHREADS)
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0
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32 #define TID_T_FMT PTR_FMT
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33 #else
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34 #define TID_T_FMT "%d"
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35 #endif
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36
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37
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38 typedef pthread_key_t ngx_tls_key_t;
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39
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40 #define ngx_thread_key_create(key) pthread_key_create(key, NULL)
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41 #define ngx_thread_key_create_n "pthread_key_create()"
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42 #define ngx_thread_set_tls pthread_setspecific
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43 #define ngx_thread_set_tls_n "pthread_setspecific()"
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44 #define ngx_thread_get_tls pthread_getspecific
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45
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46
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47 #define NGX_MUTEX_LIGHT 0
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48
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49 typedef struct {
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50 pthread_mutex_t mutex;
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51 ngx_log_t *log;
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52 } ngx_mutex_t;
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53
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54 typedef struct {
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55 pthread_cond_t cond;
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56 ngx_tid_t tid;
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57 ngx_log_t *log;
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58 } ngx_cond_t;
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59
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60 #define ngx_thread_sigmask pthread_sigmask
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61 #define ngx_thread_sigmask_n "pthread_sigmask()"
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62
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63 #define ngx_thread_join(t, p) pthread_join(t, p)
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64
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65 #define ngx_setthrtitle(n)
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66
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67
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68
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69 ngx_int_t ngx_mutex_trylock(ngx_mutex_t *m);
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70 ngx_int_t ngx_mutex_lock(ngx_mutex_t *m);
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71 ngx_int_t ngx_mutex_unlock(ngx_mutex_t *m);
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72
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73 #endif
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74
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75
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76 #define ngx_thread_volatile volatile
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77
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78
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79 typedef struct {
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80 ngx_tid_t tid;
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81 ngx_cond_t *cv;
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82 ngx_uint_t state;
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83 } ngx_thread_t;
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84
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85 #define NGX_THREAD_FREE 1
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86 #define NGX_THREAD_BUSY 2
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87 #define NGX_THREAD_EXIT 3
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88 #define NGX_THREAD_DONE 4
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89
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90 extern ngx_int_t ngx_threads_n;
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91 extern volatile ngx_thread_t ngx_threads[NGX_MAX_THREADS];
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92
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93
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94 ngx_int_t ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle);
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95 int ngx_create_thread(ngx_tid_t *tid, void* (*func)(void *arg), void *arg,
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96 ngx_log_t *log);
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97
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98
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99 ngx_mutex_t *ngx_mutex_init(ngx_log_t *log, uint flags);
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100 void ngx_mutex_destroy(ngx_mutex_t *m);
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101
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102
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103 ngx_cond_t *ngx_cond_init(ngx_log_t *log);
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104 void ngx_cond_destroy(ngx_cond_t *cv);
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105 ngx_int_t ngx_cond_wait(ngx_cond_t *cv, ngx_mutex_t *m);
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106 ngx_int_t ngx_cond_signal(ngx_cond_t *cv);
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107
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108
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109 #else /* !NGX_THREADS */
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110
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111 #define ngx_thread_volatile
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112
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113 #define ngx_log_tid 0
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114 #define TID_T_FMT "%d"
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115
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116 #define ngx_mutex_trylock(m) NGX_OK
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117 #define ngx_mutex_lock(m) NGX_OK
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118 #define ngx_mutex_unlock(m)
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119
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120 #define ngx_cond_signal(cv)
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121
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122 #define ngx_thread_main() 1
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123
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124 #endif
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125
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126
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127
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128 #endif /* _NGX_THREAD_H_INCLUDED_ */
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