Mercurial > hg > nginx
annotate src/os/unix/ngx_aio_write.c @ 441:da8c5707af39
nginx-0.1.0-2004-09-28-12:34:51 import; set copyright and remove unused files
author | Igor Sysoev <igor@sysoev.ru> |
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date | Tue, 28 Sep 2004 08:34:51 +0000 |
parents | 4a3f18406832 |
children | 42d11f017717 |
rev | line source |
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441
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1 |
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2 /* |
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3 * Copyright (C) 2002-2004 Igor Sysoev |
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4 */ |
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5 |
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6 |
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7 #include <ngx_config.h> |
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8 #include <ngx_core.h> |
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9 #include <ngx_event.h> |
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10 #include <ngx_aio.h> |
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11 |
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12 #if (HAVE_KQUEUE) |
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13 #include <ngx_kqueue_module.h> |
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14 #endif |
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15 |
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16 |
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17 /* |
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18 * the ready data requires 3 syscalls: |
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19 * aio_write(), aio_error(), aio_return() |
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20 * the non-ready data requires 4 (kqueue) or 5 syscalls: |
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21 * aio_write(), aio_error(), notifiction, aio_error(), aio_return() |
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22 * timeout, aio_cancel(), aio_error() |
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23 */ |
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24 |
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25 ssize_t ngx_aio_write(ngx_connection_t *c, u_char *buf, size_t size) |
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26 { |
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27 int n; |
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28 ngx_event_t *wev; |
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29 |
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30 wev = c->write; |
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31 |
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32 if (!wev->ready) { |
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33 return NGX_AGAIN; |
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34 } |
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35 |
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36 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, wev->log, 0, |
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37 "aio: wev->complete: %d", wev->complete); |
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38 |
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39 if (!wev->complete) { |
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40 ngx_memzero(&wev->aiocb, sizeof(struct aiocb)); |
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41 |
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42 wev->aiocb.aio_fildes = c->fd; |
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43 wev->aiocb.aio_buf = buf; |
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44 wev->aiocb.aio_nbytes = size; |
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45 |
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46 #if (HAVE_KQUEUE) |
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47 wev->aiocb.aio_sigevent.sigev_notify_kqueue = ngx_kqueue; |
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48 wev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; |
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49 wev->aiocb.aio_sigevent.sigev_value.sigval_ptr = wev; |
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50 #endif |
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51 |
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52 if (aio_write(&wev->aiocb) == -1) { |
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53 ngx_log_error(NGX_LOG_CRIT, wev->log, ngx_errno, |
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54 "aio_write() failed"); |
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55 return NGX_ERROR; |
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56 } |
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57 |
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58 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, wev->log, 0, "aio_write: OK"); |
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59 |
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60 wev->active = 1; |
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61 wev->ready = 0; |
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62 } |
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63 |
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64 wev->complete = 0; |
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65 |
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66 n = aio_error(&wev->aiocb); |
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67 if (n == -1) { |
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68 ngx_log_error(NGX_LOG_CRIT, wev->log, ngx_errno, "aio_error() failed"); |
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69 wev->error = 1; |
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70 return NGX_ERROR; |
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71 } |
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72 |
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73 if (n != 0) { |
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74 if (n == NGX_EINPROGRESS) { |
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75 if (wev->ready) { |
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76 ngx_log_error(NGX_LOG_ALERT, wev->log, n, |
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77 "aio_write() still in progress"); |
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78 wev->ready = 0; |
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79 } |
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80 return NGX_AGAIN; |
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81 } |
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82 |
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83 ngx_log_error(NGX_LOG_CRIT, wev->log, n, "aio_write() failed"); |
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84 wev->error = 1; |
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85 wev->ready = 0; |
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86 |
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87 #if 1 |
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88 n = aio_return(&wev->aiocb); |
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89 if (n == -1) { |
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90 ngx_log_error(NGX_LOG_ALERT, wev->log, ngx_errno, |
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91 "aio_return() failed"); |
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92 } |
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93 |
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94 ngx_log_error(NGX_LOG_CRIT, wev->log, n, "aio_return() %d", n); |
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95 #endif |
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96 |
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97 return NGX_ERROR; |
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98 } |
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99 |
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100 n = aio_return(&wev->aiocb); |
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101 if (n == -1) { |
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102 ngx_log_error(NGX_LOG_ALERT, wev->log, ngx_errno, |
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103 "aio_return() failed"); |
93
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104 |
164
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105 wev->error = 1; |
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106 wev->ready = 0; |
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107 return NGX_ERROR; |
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108 } |
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109 |
164
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110 |
257
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111 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, wev->log, 0, "aio_write: %d", n); |
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112 |
166
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113 wev->active = 0; |
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114 wev->ready = 1; |
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115 |
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116 return n; |
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117 } |