Mercurial > hg > nginx
annotate src/os/unix/ngx_freebsd_rfork_thread.c @ 208:0b67be7d4489
nginx-0.0.1-2003-12-08-23:48:12 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Mon, 08 Dec 2003 20:48:12 +0000 |
parents | 738fe44c70d5 |
children | 5238e93961a1 |
rev | line source |
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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6 extern int __isthreaded; |
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9 typedef int ngx_tid_t; |
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12 static inline int ngx_gettid(); |
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15 static char *usrstack; |
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16 static int red_zone = 4096; |
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18 static size_t stack_size; |
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19 static size_t usable_stack_size; |
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20 static char *last_stack; |
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21 |
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22 static int threads; |
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23 static int nthreads; |
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24 static ngx_tid_t *tids; |
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26 /* the thread-safe errno */ |
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28 static int errno0; /* the main thread's errno */ |
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29 static int *errnos; |
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30 |
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31 int *__error() |
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32 { |
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33 int tid; |
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34 |
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35 tid = ngx_gettid(); |
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36 |
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37 return tid ? &errnos[tid - 1] : &errno0; |
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38 } |
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39 |
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41 int ngx_create_thread(ngx_tid_t *tid, int (*func)(void *arg), void *arg, |
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42 ngx_log_t *log) |
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43 { |
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44 int id, err; |
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45 char *stack, *stack_top; |
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47 if (threads >= nthreads) { |
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48 ngx_log_error(NGX_LOG_CRIT, log, 0, |
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49 "no more than %d threads can be created", nthreads); |
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50 return NGX_ERROR; |
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51 } |
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52 |
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53 last_stack -= stack_size; |
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54 stack = mmap(last_stack, usable_stack_size, PROT_READ|PROT_WRITE, |
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55 MAP_STACK, -1, 0); |
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56 if (stack == MAP_FAILED) { |
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57 ngx_log_error(NGX_LOG_ALERT, log, errno, |
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58 "mmap(%08X:%d, MAP_STACK) thread stack failed", |
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59 last_stack, usable_stack_size); |
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60 return NGX_ERROR; |
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61 } |
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62 |
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63 if (stack != last_stack) { |
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64 ngx_log_error(NGX_LOG_ALERT, log, 0, "stack address was changed"); |
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65 } |
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66 |
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67 stack_top = stack + usable_stack_size; |
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68 |
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69 printf("stack: %08X-%08X\n", stack, stack_top); |
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71 #if 1 |
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72 id = rfork_thread(RFPROC|RFTHREAD|RFMEM, stack_top, func, arg); |
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73 #elif 1 |
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74 id = rfork_thread(RFPROC|RFMEM, stack_top, func, arg); |
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75 #elif 1 |
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76 id = rfork_thread(RFFDG|RFCFDG, stack_top, func, arg); |
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77 #else |
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78 id = rfork(RFFDG|RFCFDG); |
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79 #endif |
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80 |
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81 err = errno; |
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82 |
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83 if (id == -1) { |
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84 ngx_log_error(NGX_LOG_ALERT, log, err, "rfork() failed"); |
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85 |
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86 } else { |
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87 *tid = id; |
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88 threads = (usrstack - stack_top) / stack_size; |
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89 tids[threads] = id; |
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90 |
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91 /* allow the spinlock in libc malloc() */ |
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92 __isthreaded = 1; |
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93 } |
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94 |
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95 return err; |
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96 } |
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97 |
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98 |
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99 int ngx_init_thread_env(int n, size_t size, ngx_log_t *log) |
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100 { |
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101 int len; |
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102 char *rz, *zone; |
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103 |
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104 nthreads = n; |
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105 |
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106 len = 4; |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
107 if (sysctlbyname("kern.usrstack", &usrstack, &len, NULL, 0) == -1) { |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
108 ngx_log_error(NGX_LOG_ALERT, log, errno, |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
109 "sysctlbyname(kern.usrstack) failed"); |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
110 return NGX_ERROR; |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
111 } |
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
112 |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
113 printf("usrstack: %08X\n", usrstack); |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
114 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
115 /* red zone */ |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
116 rz = usrstack - (size + red_zone); |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
117 |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
118 printf("red zone: %08X\n", rz); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
119 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
120 zone = mmap(rz, red_zone, PROT_NONE, MAP_ANON, -1, 0); |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
121 if (zone == MAP_FAILED) { |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
122 ngx_log_error(NGX_LOG_ALERT, log, errno, |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
123 "mmap(%08X:%d, PROT_NONE, MAP_ANON) red zone failed", |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
124 rz, red_zone); |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
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125 return NGX_ERROR; |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
126 } |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
127 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
128 if (zone != rz) { |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
129 ngx_log_error(NGX_LOG_ALERT, log, 0, "red zone address was changed"); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
130 } |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
131 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
132 /* create the thread errno array */ |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
133 ngx_test_null(errnos, ngx_calloc(n * sizeof(int), log), NGX_ERROR); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
134 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
135 /* create the thread tid array */ |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
136 ngx_test_null(tids, ngx_calloc((n + 1) * sizeof(ngx_tid_t), log), |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
137 NGX_ERROR); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
138 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
139 tids[0] = ngx_getpid(); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
140 threads = 1; |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
141 |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
142 last_stack = zone + red_zone; |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
143 usable_stack_size = size; |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
144 stack_size = size + red_zone; |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
145 |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
146 return NGX_OK; |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
147 } |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
148 |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
149 |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
150 ngx_tid_t ngx_thread_self() |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
151 { |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
152 int tid; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
153 ngx_tid_t pid; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
154 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
155 tid = ngx_gettid(); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
156 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
157 if (tids[tid] == 0) { |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
158 pid = ngx_getpid(); |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
159 tids[tid] = pid; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
160 return pid; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
161 } |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
162 |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
163 return tids[tid]; |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
164 } |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
165 |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
166 |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
167 static inline int ngx_gettid() |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
86
diff
changeset
|
168 { |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
169 char *sp; |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
170 |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
171 if (stack_size == 0) { |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
172 return 0; |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
173 } |
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
174 |
84
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
175 __asm__ ("mov %%esp, %0" : "=q" (sp)); |
fab4cb00fe5b
nginx-0.0.1-2003-05-06-21:03:16 import
Igor Sysoev <igor@sysoev.ru>
parents:
3
diff
changeset
|
176 |
86
3973260705cc
nginx-0.0.1-2003-05-12-19:52:24 import
Igor Sysoev <igor@sysoev.ru>
parents:
85
diff
changeset
|
177 return (usrstack - sp) / stack_size; |
3
34a521b1a148
nginx-0.0.1-2002-08-20-18:48:28 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
178 } |