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annotate src/os/unix/ngx_thread.h @ 279:b79f021a644a

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nginx-0.0.2-2004-03-04-19:34:23 import
author Igor Sysoev <igor@sysoev.ru>
date Thu, 04 Mar 2004 16:34:23 +0000
parents e91499541410
children 4b1a3a4acc60
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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 #define ngx_thread_volatile volatile
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12 #if (NGX_USE_RFORK)
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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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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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39 #define ngx_thread_sigmask(how, set, oset) \
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40 (sigprocmask(how, set, oset) == -1) ? ngx_errno : 0
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42 #define ngx_thread_sigmask_n "sigprocmask()"
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45 extern char *ngx_freebsd_kern_usrstack;
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46 extern size_t ngx_thread_stack_size;
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47
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48 static inline int ngx_gettid()
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49 {
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50 char *sp;
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51
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52 if (ngx_thread_stack_size == 0) {
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53 return 0;
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54 }
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56 #if ( __i386__ )
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58 __asm__ volatile ("mov %%esp, %0" : "=q" (sp));
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60 #elif ( __amd64__ )
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61
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62 __asm__ volatile ("mov %%rsp, %0" : "=q" (sp));
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63
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64 #else
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65
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66 #error "rfork()ed threads are not supported on this platform"
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67
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68 #endif
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69
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70 return (ngx_freebsd_kern_usrstack - sp) / ngx_thread_stack_size;
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71 }
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75 #else /* use pthreads */
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77 #include <pthread.h>
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78
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79 typedef pthread_t ngx_tid_t;
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81 #define ngx_gettid() ((ngx_int_t) pthread_getspecific(0))
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82 #define ngx_log_tid ngx_thread_self()
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83
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84 #define ngx_thread_sigmask pthread_sigmask
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85 #define ngx_thread_sigmask_n "pthread_sigmask()"
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86
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87 #endif
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88
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90 ngx_int_t ngx_init_threads(int n, size_t size, ngx_cycle_t *cycle);
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91 int ngx_create_thread(ngx_tid_t *tid, int (*func)(void *arg), void *arg,
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92 ngx_log_t *log);
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93 ngx_tid_t ngx_thread_self();
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96 ngx_mutex_t *ngx_mutex_init(ngx_log_t *log, uint flags);
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97 void ngx_mutex_done(ngx_mutex_t *m);
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99 #define ngx_mutex_trylock(m) ngx_mutex_dolock(m, 1)
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100 #define ngx_mutex_lock(m) ngx_mutex_dolock(m, 0)
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101 ngx_int_t ngx_mutex_dolock(ngx_mutex_t *m, ngx_int_t try);
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102 ngx_int_t ngx_mutex_unlock(ngx_mutex_t *m);
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103
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104
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105 extern ngx_int_t ngx_threaded;
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106
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107
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108 #else /* !NGX_THREADS */
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109
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110 #define ngx_thread_volatile
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111
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112 #define ngx_log_tid 0
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113 #define TID_T_FMT "%d"
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114
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115 #define ngx_mutex_lock(m) NGX_OK
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116 #define ngx_mutex_unlock(m)
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Igor Sysoev <igor@sysoev.ru>
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117
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
Igor Sysoev <igor@sysoev.ru>
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118 #endif
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119
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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120
5238e93961a1 nginx-0.0.2-2004-02-23-23:57:12 import
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121 #endif /* _NGX_THREAD_H_INCLUDED_ */