Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_freebsd_rfork_thread.h @ 5707:31dd63dcb9ea
Events: use eventfd() instead of syscall(SYS_eventfd) if possible.
This fixes --with-file-aio support on systems that lack eventfd()
syscall, notably aarch64 Linux.
The syscall(SYS_eventfd) may still be necessary on systems that
have eventfd() syscall in the kernel but lack it in glibc, e.g.
as seen in the current CentOS 5 release.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Fri, 23 May 2014 16:37:05 +0400 |
parents | 15a7deeaa19a |
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rev | line source |
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441
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
441
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5 */ |
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8 #ifndef _NGX_FREEBSD_RFORK_THREAD_H_INCLUDED_ |
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9 #define _NGX_FREEBSD_RFORK_THREAD_H_INCLUDED_ |
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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 #define ngx_log_pid ngx_thread_self() |
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19 #define ngx_log_tid 0 |
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461 | 21 #define NGX_TID_T_FMT "%P" |
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22 |
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23 |
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24 #define NGX_MUTEX_LIGHT 1 |
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25 |
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26 #define NGX_MUTEX_LOCK_BUSY 0x80000000 |
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27 |
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28 typedef volatile struct { |
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29 ngx_atomic_t lock; |
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30 ngx_log_t *log; |
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31 int semid; |
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32 } ngx_mutex_t; |
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33 |
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34 |
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35 #define NGX_CV_SIGNAL 64 |
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36 |
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37 typedef struct { |
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38 int signo; |
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39 int kq; |
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40 ngx_tid_t tid; |
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41 ngx_log_t *log; |
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42 } ngx_cond_t; |
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43 |
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44 |
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45 #define ngx_thread_sigmask(how, set, oset) \ |
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46 (sigprocmask(how, set, oset) == -1) ? ngx_errno : 0 |
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47 |
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48 #define ngx_thread_sigmask_n "sigprocmask()" |
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49 |
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50 #define ngx_thread_join(t, p) |
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51 |
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52 #define ngx_setthrtitle(n) setproctitle(n) |
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53 |
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54 |
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55 extern char *ngx_freebsd_kern_usrstack; |
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56 extern size_t ngx_thread_stack_size; |
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57 |
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563 | 59 static ngx_inline ngx_int_t |
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60 ngx_gettid(void) |
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61 { |
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62 char *sp; |
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63 |
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64 if (ngx_thread_stack_size == 0) { |
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65 return 0; |
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66 } |
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67 |
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68 #if ( __i386__ ) |
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69 |
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70 __asm__ volatile ("mov %%esp, %0" : "=q" (sp)); |
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71 |
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72 #elif ( __amd64__ ) |
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73 |
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74 __asm__ volatile ("mov %%rsp, %0" : "=q" (sp)); |
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75 |
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76 #else |
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77 |
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78 #error "rfork()ed threads are not supported on this platform" |
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79 |
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80 #endif |
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81 |
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82 return (ngx_freebsd_kern_usrstack - sp) / ngx_thread_stack_size; |
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83 } |
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84 |
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85 |
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86 ngx_tid_t ngx_thread_self(void); |
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87 |
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89 typedef ngx_uint_t ngx_tls_key_t; |
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91 #define NGX_THREAD_KEYS_MAX 16 |
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92 |
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93 extern void **ngx_tls; |
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461 | 95 ngx_err_t ngx_thread_key_create(ngx_tls_key_t *key); |
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96 #define ngx_thread_key_create_n "the tls key creation" |
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461 | 98 ngx_err_t ngx_thread_set_tls(ngx_tls_key_t key, void *value); |
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99 #define ngx_thread_set_tls_n "the tls key setting" |
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100 |
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101 |
563 | 102 static void * |
103 ngx_thread_get_tls(ngx_tls_key_t key) | |
577 | 104 { |
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105 if (key >= NGX_THREAD_KEYS_MAX) { |
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106 return NULL; |
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107 } |
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108 |
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109 return ngx_tls[key * NGX_THREAD_KEYS_MAX + ngx_gettid()]; |
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110 } |
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111 |
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113 #define ngx_mutex_trylock(m) ngx_mutex_dolock(m, 1) |
563 | 114 #define ngx_mutex_lock(m) (void) ngx_mutex_dolock(m, 0) |
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115 ngx_int_t ngx_mutex_dolock(ngx_mutex_t *m, ngx_int_t try); |
563 | 116 void ngx_mutex_unlock(ngx_mutex_t *m); |
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117 |
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118 |
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119 typedef int (*ngx_rfork_thread_func_pt)(void *arg); |
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120 |
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121 |
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122 #endif /* _NGX_FREEBSD_RFORK_THREAD_H_INCLUDED_ */ |