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0
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1
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2 /*
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3 * Copyright (C) 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
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11
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518
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12 extern int ngx_kqueue;
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13
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0
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14
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126
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15 ssize_t
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16 ngx_aio_write(ngx_connection_t *c, u_char *buf, size_t size)
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0
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17 {
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18 int n;
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19 ngx_event_t *wev;
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20
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21 wev = c->write;
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22
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23 if (!wev->ready) {
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24 return NGX_AGAIN;
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25 }
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26
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27 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, wev->log, 0,
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28 "aio: wev->complete: %d", wev->complete);
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29
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30 if (!wev->complete) {
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31 ngx_memzero(&wev->aiocb, sizeof(struct aiocb));
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32
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33 wev->aiocb.aio_fildes = c->fd;
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34 wev->aiocb.aio_buf = buf;
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35 wev->aiocb.aio_nbytes = size;
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36
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18
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37 #if (NGX_HAVE_KQUEUE)
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0
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38 wev->aiocb.aio_sigevent.sigev_notify_kqueue = ngx_kqueue;
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39 wev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT;
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40 wev->aiocb.aio_sigevent.sigev_value.sigval_ptr = wev;
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41 #endif
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42
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43 if (aio_write(&wev->aiocb) == -1) {
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44 ngx_log_error(NGX_LOG_CRIT, wev->log, ngx_errno,
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45 "aio_write() failed");
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46 return NGX_ERROR;
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47 }
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48
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49 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, wev->log, 0, "aio_write: OK");
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50
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51 wev->active = 1;
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52 wev->ready = 0;
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53 }
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54
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55 wev->complete = 0;
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56
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57 n = aio_error(&wev->aiocb);
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58 if (n == -1) {
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59 ngx_log_error(NGX_LOG_CRIT, wev->log, ngx_errno, "aio_error() failed");
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60 wev->error = 1;
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61 return NGX_ERROR;
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62 }
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63
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64 if (n != 0) {
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65 if (n == NGX_EINPROGRESS) {
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66 if (wev->ready) {
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67 ngx_log_error(NGX_LOG_ALERT, wev->log, n,
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68 "aio_write() still in progress");
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69 wev->ready = 0;
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70 }
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71 return NGX_AGAIN;
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72 }
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73
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74 ngx_log_error(NGX_LOG_CRIT, wev->log, n, "aio_write() failed");
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75 wev->error = 1;
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76 wev->ready = 0;
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77
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78 #if 1
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79 n = aio_return(&wev->aiocb);
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80 if (n == -1) {
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81 ngx_log_error(NGX_LOG_ALERT, wev->log, ngx_errno,
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82 "aio_return() failed");
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83 }
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84
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85 ngx_log_error(NGX_LOG_CRIT, wev->log, n, "aio_return() %d", n);
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86 #endif
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87
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88 return NGX_ERROR;
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89 }
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90
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91 n = aio_return(&wev->aiocb);
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92 if (n == -1) {
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93 ngx_log_error(NGX_LOG_ALERT, wev->log, ngx_errno,
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94 "aio_return() failed");
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95
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96 wev->error = 1;
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97 wev->ready = 0;
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98 return NGX_ERROR;
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99 }
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100
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101
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102 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, wev->log, 0, "aio_write: %d", n);
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103
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104 wev->active = 0;
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105 wev->ready = 1;
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106
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107 return n;
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108 }
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