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annotate src/os/unix/freebsd/ngx_rfork_thread.c @ 8:708f8bb772ec

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nginx-0.0.1-2002-09-02-18:48:24 import
author Igor Sysoev <igor@sysoev.ru>
date Mon, 02 Sep 2002 14:48:24 +0000
parents 34a521b1a148
children
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34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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1
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2 #include <ngx_os_thread.h>
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4 char *ngx_stacks_start;
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5 char *ngx_stacks_end;
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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6 size_t ngx_stack_size;
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34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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9 /* handle thread-safe errno */
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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10 static int errno0; /* errno for main thread */
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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11 static int *errnos;
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34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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13 int *__error()
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14 {
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15 ngx_tid_t tid = ngx_gettid();
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16 return tid ? &(errnos[ngx_gettid()]) : &errno0;
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17 }
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34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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20 int ngx_create_thread(ngx_os_tid_t *tid, void *stack,
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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21 int (*func)(void *arg), void *arg, ngx_log_t log)
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22 {
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23 int id, err;
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24
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25 id = rfork_thread(RFPROC|RFMEM, stack, func, arg);
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26 err = ngx_errno;
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28 if (id == -1)
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29 ngx_log_error(NGX_LOG_ERR, log, err,
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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30 "ngx_create_os_thread: rfork failed");
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31 else
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32 *tid = id;
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33
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34 return err;
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35 }
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34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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38 int ngx_create_thread_env(int n, size_t size, ngx_log_t log)
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39 {
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40 char *addr;
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41
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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42 /* create thread stacks */
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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43 addr = mmap(NULL, n * size, PROT_READ|PROT_WRITE, MAP_ANON, -1, NULL);
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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44 if (addr == MAP_FAILED) {
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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45 ngx_log_error(NGX_LOG_ERR, log, ngx_errno,
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46 "ngx_create_os_thread_stacks: mmap failed");
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47 return -1;
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48 }
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50 nxg_stacks_start = addr;
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51 nxg_stacks_end = addr + n * size;
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52 nxg_stack_size = size;
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53
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54 /* create thread errno array */
34a521b1a148 nginx-0.0.1-2002-08-20-18:48:28 import
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55 ngx_test_null(errnos, ngx_calloc(n * sizeof(int)), -1);
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56
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57 /* create thread tid array */
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58 ngx_test_null(ngx_os_tids, ngx_calloc(n * sizeof(ngx_os_tid_t)), -1);
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59
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60 /* allow spinlock in malloc() */
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61 __isthreaded = 1;
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62
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63 return 0;
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64 }