Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_aio_write.c @ 123:b75602822f64
nginx-0.0.1-2003-07-24-00:01:29 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 23 Jul 2003 20:01:29 +0000 |
parents | 6dfda4cf5200 |
children | ef8c87afcfc5 |
rev | line source |
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93
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nginx-0.0.1-2003-05-21-17:28:21 import
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1 |
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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4 #include <ngx_event.h> |
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5 #include <ngx_aio.h> |
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6 |
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7 #if (HAVE_KQUEUE) |
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8 #include <ngx_kqueue_module.h> |
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9 #endif |
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10 |
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11 |
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12 /* |
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13 The data is ready - 3 syscalls: |
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nginx-0.0.1-2003-05-21-17:28:21 import
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14 aio_write(), aio_error(), aio_return() |
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15 The data is not ready - 4 (kqueue) or 5 syscalls: |
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16 aio_write(), aio_error(), notifiction, |
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17 aio_error(), aio_return() |
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18 aio_cancel(), aio_error() |
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19 */ |
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20 |
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21 ssize_t ngx_aio_write(ngx_connection_t *c, char *buf, size_t size) |
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22 { |
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23 int rc, first, canceled; |
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24 ngx_event_t *ev; |
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25 |
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26 ev = c->write; |
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27 |
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28 canceled = 0; |
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29 |
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30 ngx_log_debug(ev->log, "aio: ev->ready: %d" _ ev->ready); |
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31 ngx_log_debug(ev->log, "aio: aiocb: %08x" _ &ev->aiocb); |
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32 |
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33 #if 0 |
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34 if (ev->timedout) { |
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35 ngx_set_socket_errno(NGX_ETIMEDOUT); |
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36 ngx_log_error(NGX_LOG_ERR, ev->log, 0, "aio_write() timed out"); |
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37 |
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38 rc = aio_cancel(c->fd, &ev->aiocb); |
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39 if (rc == -1) { |
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40 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, |
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41 "aio_cancel() failed"); |
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42 return NGX_ERROR; |
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43 } |
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44 |
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45 ngx_log_debug(ev->log, "aio_cancel: %d" _ rc); |
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46 |
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47 canceled = 1; |
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48 |
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49 ev->ready = 1; |
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50 } |
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51 #endif |
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52 |
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53 first = 0; |
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54 |
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55 if (!ev->ready) { |
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56 ngx_memzero(&ev->aiocb, sizeof(struct aiocb)); |
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57 |
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58 ev->aiocb.aio_fildes = c->fd; |
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59 ev->aiocb.aio_buf = buf; |
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60 ev->aiocb.aio_nbytes = size; |
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61 |
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62 #if (HAVE_KQUEUE) |
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63 ev->aiocb.aio_sigevent.sigev_notify_kqueue = ngx_kqueue; |
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64 ev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; |
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65 ev->aiocb.aio_sigevent.sigev_value.sigval_ptr = ev; |
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66 #endif |
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67 |
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68 if (aio_write(&ev->aiocb) == -1) { |
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69 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, |
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70 "aio_write() failed"); |
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71 return NGX_ERROR; |
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72 } |
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73 |
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74 ngx_log_debug(ev->log, "aio_write: OK"); |
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75 |
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76 ev->active = 1; |
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77 first = 1; |
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78 } |
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79 |
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80 ev->ready = 0; |
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81 |
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82 rc = aio_error(&ev->aiocb); |
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83 if (rc == -1) { |
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84 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, "aio_error() failed"); |
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85 return NGX_ERROR; |
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86 } |
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87 |
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88 if (rc != 0) { |
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89 if (rc == NGX_EINPROGRESS) { |
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90 if (!first) { |
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91 ngx_log_error(NGX_LOG_CRIT, ev->log, rc, |
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92 "aio_write() still in progress"); |
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93 } |
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94 return NGX_AGAIN; |
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95 } |
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96 |
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97 if (rc == NGX_ECANCELED && canceled) { |
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nginx-0.0.1-2003-05-21-17:28:21 import
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98 return NGX_ERROR; |
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99 } |
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100 |
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101 ngx_log_error(NGX_LOG_CRIT, ev->log, rc, "aio_write() failed"); |
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102 return NGX_ERROR; |
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103 } |
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104 |
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105 rc = aio_return(&ev->aiocb); |
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106 if (rc == -1) { |
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107 ngx_log_error(NGX_LOG_CRIT, ev->log, ngx_errno, "aio_return() failed"); |
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108 |
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109 return NGX_ERROR; |
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110 } |
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111 |
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112 ngx_log_debug(ev->log, "aio_write: %d" _ rc); |
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113 |
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114 return rc; |
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115 } |