Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_aio_read.c @ 5905:2f7e557eab5b
Cache: proxy_cache_lock_age and friends.
Once this age is reached, the cache lock is discarded and another
request can acquire the lock. Requests which failed to acquire
the lock are not allowed to cache the response.
author | Roman Arutyunyan <arut@nginx.com> |
---|---|
date | Tue, 18 Nov 2014 20:41:12 +0300 |
parents | d620f497c50f |
children |
rev | line source |
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441
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1 |
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2 /* |
444
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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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6 |
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7 |
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8 #include <ngx_config.h> |
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9 #include <ngx_core.h> |
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10 #include <ngx_event.h> |
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11 |
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12 |
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13 extern int ngx_kqueue; |
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14 |
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15 |
577 | 16 ssize_t |
17 ngx_aio_read(ngx_connection_t *c, u_char *buf, size_t size) | |
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18 { |
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19 int n; |
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20 ngx_event_t *rev; |
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21 |
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22 rev = c->read; |
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23 |
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24 if (!rev->ready) { |
278
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25 ngx_log_error(NGX_LOG_ALERT, c->log, 0, "second aio post"); |
164
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26 return NGX_AGAIN; |
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27 } |
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28 |
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29 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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30 "rev->complete: %d", rev->complete); |
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31 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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32 "aio size: %d", size); |
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33 |
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34 if (!rev->complete) { |
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35 ngx_memzero(&rev->aiocb, sizeof(struct aiocb)); |
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36 |
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37 rev->aiocb.aio_fildes = c->fd; |
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38 rev->aiocb.aio_buf = buf; |
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39 rev->aiocb.aio_nbytes = size; |
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40 |
469 | 41 #if (NGX_HAVE_KQUEUE) |
164
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42 rev->aiocb.aio_sigevent.sigev_notify_kqueue = ngx_kqueue; |
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43 rev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; |
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44 rev->aiocb.aio_sigevent.sigev_value.sigval_ptr = rev; |
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45 #endif |
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46 |
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47 if (aio_read(&rev->aiocb) == -1) { |
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48 ngx_log_error(NGX_LOG_CRIT, rev->log, ngx_errno, |
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49 "aio_read() failed"); |
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50 rev->error = 1; |
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51 return NGX_ERROR; |
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52 } |
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53 |
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54 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, c->log, 0, |
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55 "aio_read: #%d OK", c->fd); |
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56 |
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57 rev->active = 1; |
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58 rev->ready = 0; |
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59 } |
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60 |
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61 rev->complete = 0; |
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62 |
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63 n = aio_error(&rev->aiocb); |
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64 if (n == -1) { |
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65 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, "aio_error() failed"); |
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66 rev->error = 1; |
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67 return NGX_ERROR; |
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68 } |
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69 |
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70 if (n != 0) { |
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71 if (n == NGX_EINPROGRESS) { |
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72 if (rev->ready) { |
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73 ngx_log_error(NGX_LOG_ALERT, c->log, n, |
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74 "aio_read() still in progress"); |
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75 rev->ready = 0; |
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76 } |
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77 return NGX_AGAIN; |
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78 } |
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79 |
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80 ngx_log_error(NGX_LOG_CRIT, c->log, n, "aio_read() failed"); |
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81 rev->error = 1; |
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82 rev->ready = 0; |
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83 return NGX_ERROR; |
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84 } |
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85 |
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86 n = aio_return(&rev->aiocb); |
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87 if (n == -1) { |
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88 ngx_log_error(NGX_LOG_ALERT, c->log, ngx_errno, |
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89 "aio_return() failed"); |
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90 |
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91 rev->error = 1; |
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92 rev->ready = 0; |
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93 return NGX_ERROR; |
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94 } |
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95 |
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96 ngx_log_debug2(NGX_LOG_DEBUG_EVENT, rev->log, 0, |
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97 "aio_read: #%d %d", c->fd, n); |
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98 |
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99 if (n == 0) { |
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100 rev->eof = 1; |
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101 rev->ready = 0; |
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102 } else { |
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103 rev->ready = 1; |
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104 } |
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105 |
164
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nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
103
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106 rev->active = 0; |
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
103
diff
changeset
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107 |
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
103
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108 return n; |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
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109 } |