Mercurial > hg > nginx-quic
annotate src/os/unix/ngx_aio_write.c @ 5707:31dd63dcb9ea
Events: use eventfd() instead of syscall(SYS_eventfd) if possible.
This fixes --with-file-aio support on systems that lack eventfd()
syscall, notably aarch64 Linux.
The syscall(SYS_eventfd) may still be necessary on systems that
have eventfd() syscall in the kernel but lack it in glibc, e.g.
as seen in the current CentOS 5 release.
author | Ruslan Ermilov <ru@nginx.com> |
---|---|
date | Fri, 23 May 2014 16:37:05 +0400 |
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 |
3044
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13 extern int ngx_kqueue; |
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14 |
93
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15 |
577 | 16 ssize_t |
17 ngx_aio_write(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 *wev; |
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21 |
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22 wev = c->write; |
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23 |
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24 if (!wev->ready) { |
164
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25 return NGX_AGAIN; |
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26 } |
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27 |
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28 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, wev->log, 0, |
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29 "aio: wev->complete: %d", wev->complete); |
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30 |
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31 if (!wev->complete) { |
164
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32 ngx_memzero(&wev->aiocb, sizeof(struct aiocb)); |
93
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33 |
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34 wev->aiocb.aio_fildes = c->fd; |
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35 wev->aiocb.aio_buf = buf; |
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36 wev->aiocb.aio_nbytes = size; |
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37 |
469 | 38 #if (NGX_HAVE_KQUEUE) |
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39 wev->aiocb.aio_sigevent.sigev_notify_kqueue = ngx_kqueue; |
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40 wev->aiocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; |
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41 wev->aiocb.aio_sigevent.sigev_value.sigval_ptr = wev; |
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42 #endif |
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43 |
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44 if (aio_write(&wev->aiocb) == -1) { |
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45 ngx_log_error(NGX_LOG_CRIT, wev->log, ngx_errno, |
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46 "aio_write() failed"); |
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47 return NGX_ERROR; |
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48 } |
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49 |
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50 ngx_log_debug0(NGX_LOG_DEBUG_EVENT, wev->log, 0, "aio_write: OK"); |
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51 |
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52 wev->active = 1; |
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53 wev->ready = 0; |
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54 } |
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55 |
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56 wev->complete = 0; |
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57 |
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58 n = aio_error(&wev->aiocb); |
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59 if (n == -1) { |
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60 ngx_log_error(NGX_LOG_CRIT, wev->log, ngx_errno, "aio_error() failed"); |
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61 wev->error = 1; |
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62 return NGX_ERROR; |
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63 } |
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64 |
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65 if (n != 0) { |
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66 if (n == NGX_EINPROGRESS) { |
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67 if (wev->ready) { |
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68 ngx_log_error(NGX_LOG_ALERT, wev->log, n, |
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69 "aio_write() still in progress"); |
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70 wev->ready = 0; |
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71 } |
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72 return NGX_AGAIN; |
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73 } |
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74 |
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75 ngx_log_error(NGX_LOG_CRIT, wev->log, n, "aio_write() failed"); |
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76 wev->error = 1; |
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77 wev->ready = 0; |
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78 |
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79 #if 1 |
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80 n = aio_return(&wev->aiocb); |
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81 if (n == -1) { |
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82 ngx_log_error(NGX_LOG_ALERT, wev->log, ngx_errno, |
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83 "aio_return() failed"); |
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84 } |
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85 |
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86 ngx_log_error(NGX_LOG_CRIT, wev->log, n, "aio_return() %d", n); |
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87 #endif |
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88 |
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89 return NGX_ERROR; |
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90 } |
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91 |
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92 n = aio_return(&wev->aiocb); |
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93 if (n == -1) { |
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94 ngx_log_error(NGX_LOG_ALERT, wev->log, ngx_errno, |
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95 "aio_return() failed"); |
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96 |
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97 wev->error = 1; |
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98 wev->ready = 0; |
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99 return NGX_ERROR; |
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100 } |
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101 |
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102 |
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103 ngx_log_debug1(NGX_LOG_DEBUG_EVENT, wev->log, 0, "aio_write: %d", n); |
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104 |
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nginx-0.0.1-2003-10-30-11:51:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
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105 wev->active = 0; |
389d7ee9fa60
nginx-0.0.1-2003-10-30-11:51:06 import
Igor Sysoev <igor@sysoev.ru>
parents:
164
diff
changeset
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106 wev->ready = 1; |
164
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
107 |
84036764e215
nginx-0.0.1-2003-10-29-11:30:44 import
Igor Sysoev <igor@sysoev.ru>
parents:
144
diff
changeset
|
108 return n; |
93
738fe44c70d5
nginx-0.0.1-2003-05-21-17:28:21 import
Igor Sysoev <igor@sysoev.ru>
parents:
diff
changeset
|
109 } |