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Annotation of embedaddon/nginx/src/os/unix/ngx_thread.h, revision 1.1.1.1

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