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annotate src/os/unix/ngx_thread.h @ 272:d4e65d74db9f

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nginx-0.0.2-2004-03-01-00:03:02 import
author Igor Sysoev <igor@sysoev.ru>
date Sun, 29 Feb 2004 21:03:02 +0000
parents e16dfb9b9afa
children b836469c37c3
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1 #ifndef _NGX_THREAD_H_INCLUDED_
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2 #define _NGX_THREAD_H_INCLUDED_
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5 #include <ngx_config.h>
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6 #include <ngx_core.h>
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8 #if (NGX_THREADS)
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10 #if (NGX_USE_RFORK)
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12 #include <sys/ipc.h>
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13 #include <sys/sem.h>
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14 #include <sched.h>
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16 typedef pid_t ngx_tid_t;
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18 #undef ngx_log_pid
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19 #define ngx_log_pid ngx_thread_self()
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20 #define ngx_log_tid 0
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22 #define TID_T_FMT PID_T_FMT
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25 #define NGX_MUTEX_LIGHT 1
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26 #define NGX_MUTEX_CV 2
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28 #define NGX_MUTEX_LOCK_BUSY 0x80000000
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30 typedef volatile struct {
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31 ngx_atomic_t lock;
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32 ngx_log_t *log;
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33 int semid;
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34 } ngx_mutex_t;
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37 extern char *ngx_freebsd_kern_usrstack;
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38 extern size_t ngx_thread_stack_size;
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39
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40 static inline int ngx_gettid()
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41 {
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42 char *sp;
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43
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44 if (ngx_thread_stack_size == 0) {
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45 return 0;
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46 }
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48 #if ( __i386__ )
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50 __asm__ volatile ("mov %%esp, %0" : "=q" (sp));
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52 #elif ( __amd64__ )
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54 __asm__ volatile ("mov %%rsp, %0" : "=q" (sp));
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55
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56 #else
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58 #error "rfork()ed threads are not supported on this platform"
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59
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60 #endif
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61
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62 return (ngx_freebsd_kern_usrstack - sp) / ngx_thread_stack_size;
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63 }
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67 #else /* use pthreads */
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68
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69 #include <pthread.h>
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71 typedef pthread_t ngx_tid_t;
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73 #define ngx_gettid() ((ngx_int_t) pthread_getspecific(0))
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74 #define ngx_log_tid ngx_thread_self()
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75
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76 #endif
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79 ngx_int_t ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle);
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80 int ngx_create_thread(ngx_tid_t *tid, int (*func)(void *arg), void *arg,
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81 ngx_log_t *log);
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82 ngx_tid_t ngx_thread_self();
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85 ngx_mutex_t *ngx_mutex_init(ngx_log_t *log, uint flags);
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86 void ngx_mutex_done(ngx_mutex_t *m);
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88 #define ngx_mutex_trylock(m) ngx_mutex_dolock(m, 1)
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89 #define ngx_mutex_lock(m) ngx_mutex_dolock(m, 0)
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90 ngx_int_t ngx_mutex_dolock(ngx_mutex_t *m, ngx_int_t try);
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91 ngx_int_t ngx_mutex_unlock(ngx_mutex_t *m);
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94 extern ngx_int_t ngx_threaded;
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97 #else /* !NGX_THREADS */
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98
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99 #define ngx_log_tid 0
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100 #define TID_T_FMT "%d"
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101
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102 #define ngx_mutex_lock(m)
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103 #define ngx_mutex_unlock(m)
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104
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105 #endif
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106
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107
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108 #endif /* _NGX_THREAD_H_INCLUDED_ */