Mercurial > hg > nginx
annotate src/os/unix/ngx_thread.h @ 277:e91499541410
nginx-0.0.2-2004-03-03-19:14:15 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 03 Mar 2004 16:14:15 +0000 |
parents | b836469c37c3 |
children | b79f021a644a |
rev | line source |
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1 #ifndef _NGX_THREAD_H_INCLUDED_ |
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2 #define _NGX_THREAD_H_INCLUDED_ |
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3 |
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4 |
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5 #include <ngx_config.h> |
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6 #include <ngx_core.h> |
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7 |
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8 #if (NGX_THREADS) |
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10 #define ngx_thread_volatile volatile |
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12 #if (NGX_USE_RFORK) |
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13 |
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14 #include <sys/ipc.h> |
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15 #include <sys/sem.h> |
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16 #include <sched.h> |
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17 |
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18 typedef pid_t ngx_tid_t; |
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20 #undef ngx_log_pid |
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21 #define ngx_log_pid ngx_thread_self() |
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22 #define ngx_log_tid 0 |
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24 #define TID_T_FMT PID_T_FMT |
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27 #define NGX_MUTEX_LIGHT 1 |
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28 #define NGX_MUTEX_CV 2 |
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30 #define NGX_MUTEX_LOCK_BUSY 0x80000000 |
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32 typedef volatile struct { |
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33 ngx_atomic_t lock; |
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34 ngx_log_t *log; |
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35 int semid; |
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36 } ngx_mutex_t; |
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37 |
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39 extern char *ngx_freebsd_kern_usrstack; |
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40 extern size_t ngx_thread_stack_size; |
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42 static inline int ngx_gettid() |
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43 { |
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44 char *sp; |
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46 if (ngx_thread_stack_size == 0) { |
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47 return 0; |
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48 } |
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50 #if ( __i386__ ) |
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52 __asm__ volatile ("mov %%esp, %0" : "=q" (sp)); |
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54 #elif ( __amd64__ ) |
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56 __asm__ volatile ("mov %%rsp, %0" : "=q" (sp)); |
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58 #else |
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60 #error "rfork()ed threads are not supported on this platform" |
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62 #endif |
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64 return (ngx_freebsd_kern_usrstack - sp) / ngx_thread_stack_size; |
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65 } |
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69 #else /* use pthreads */ |
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71 #include <pthread.h> |
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73 typedef pthread_t ngx_tid_t; |
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75 #define ngx_gettid() ((ngx_int_t) pthread_getspecific(0)) |
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76 #define ngx_log_tid ngx_thread_self() |
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78 #endif |
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81 ngx_int_t ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle); |
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82 int ngx_create_thread(ngx_tid_t *tid, int (*func)(void *arg), void *arg, |
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83 ngx_log_t *log); |
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84 ngx_tid_t ngx_thread_self(); |
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87 ngx_mutex_t *ngx_mutex_init(ngx_log_t *log, uint flags); |
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88 void ngx_mutex_done(ngx_mutex_t *m); |
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90 #define ngx_mutex_trylock(m) ngx_mutex_dolock(m, 1) |
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91 #define ngx_mutex_lock(m) ngx_mutex_dolock(m, 0) |
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92 ngx_int_t ngx_mutex_dolock(ngx_mutex_t *m, ngx_int_t try); |
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93 ngx_int_t ngx_mutex_unlock(ngx_mutex_t *m); |
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94 |
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96 extern ngx_int_t ngx_threaded; |
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99 #else /* !NGX_THREADS */ |
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101 #define ngx_thread_volatile |
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103 #define ngx_log_tid 0 |
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104 #define TID_T_FMT "%d" |
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105 |
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106 #define ngx_mutex_lock(m) NGX_OK |
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107 #define ngx_mutex_unlock(m) |
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108 |
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109 #endif |
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110 |
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111 |
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112 #endif /* _NGX_THREAD_H_INCLUDED_ */ |