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src/os/unix/ngx_thread.h - nginx-1.7.10

Data types defined

Macros defined

Source code


  2. /*
  3. * Copyright (C) Igor Sysoev
  4. * Copyright (C) Nginx, Inc.
  5. */


  8. #ifndef _NGX_THREAD_H_INCLUDED_
  9. ‌#define _NGX_THREAD_H_INCLUDED_


  12. #include <ngx_config.h>
  13. #include <ngx_core.h>

  15. #if (NGX_THREADS)

  17. ‌#define NGX_MAX_THREADS      128

  19. #if (NGX_USE_RFORK)
  20. #include <ngx_freebsd_rfork_thread.h>


  23. #else /* use pthreads */

  25. #include <pthread.h>

  27. ‌typedef pthread_t                    ngx_tid_t;

  29. ‌#define ngx_thread_self()            pthread_self()
  30. ‌#define ngx_log_tid                  (int) ngx_thread_self()

  32. #if (NGX_FREEBSD) && !(NGX_LINUXTHREADS)
  33. ‌#define NGX_TID_T_FMT                "%p"
  34. #else
  35. ‌#define NGX_TID_T_FMT                "%d"
  36. #endif


  39. ‌typedef pthread_key_t                ngx_tls_key_t;

  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


  48. ‌#define NGX_MUTEX_LIGHT     0

  50. typedef struct {
  51.     pthread_mutex_t   mutex;
  52.     ngx_log_t        *log;
  53. ‌} ngx_mutex_t;

  55. typedef struct {
  56.     pthread_cond_t    cond;
  57.     ngx_log_t        *log;
  58. ‌} ngx_cond_t;

  60. ‌#define ngx_thread_sigmask     pthread_sigmask
  61. ‌#define ngx_thread_sigmask_n  "pthread_sigmask()"

  63. ‌#define ngx_thread_join(t, p)  pthread_join(t, p)

  65. ‌#define ngx_setthrtitle(n)



  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);

  73. #endif


  76. ‌#define ngx_thread_volatile   volatile


  79. typedef struct {
  80.     ngx_tid_t    tid;
  81.     ngx_cond_t  *cv;
  82.     ngx_uint_t   state;
  83. ‌} ngx_thread_t;

  85. ‌#define NGX_THREAD_FREE   1
  86. ‌#define NGX_THREAD_BUSY   2
  87. ‌#define NGX_THREAD_EXIT   3
  88. ‌#define NGX_THREAD_DONE   4

  90. extern ngx_int_t              ngx_threads_n;
  91. extern volatile ngx_thread_t  ngx_threads[NGX_MAX_THREADS];


  94. ‌typedef void *  ngx_thread_value_t;

  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);

  100. ngx_mutex_t *ngx_mutex_init(ngx_log_t *log, ngx_uint_t flags);
  101. void ngx_mutex_destroy(ngx_mutex_t *m);


  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);


  110. #else /* !NGX_THREADS */

  112. ‌#define ngx_thread_volatile

  114. ‌#define ngx_log_tid           0
  115. ‌#define NGX_TID_T_FMT         "%d"

  117. ‌#define ngx_mutex_trylock(m)  NGX_OK
  118. ‌#define ngx_mutex_lock(m)
  119. ‌#define ngx_mutex_unlock(m)

  121. ‌#define ngx_cond_signal(cv)

  123. ‌#define ngx_thread_main()     1

  125. #endif


  128. #endif /* _NGX_THREAD_H_INCLUDED_ */

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