Mercurial > hg > nginx
annotate src/os/unix/ngx_files.c @ 35:79c1fce18e71
nginx-0.0.1-2002-12-21-20:14:50 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Sat, 21 Dec 2002 17:14:50 +0000 |
parents | b2e039840718 |
children | 4534060fde92 |
rev | line source |
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nginx-0.0.1-2002-08-23-20:14:30 import
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33
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nginx-0.0.1-2002-12-19-20:49:51 import
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2 #include <ngx_config.h> |
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3 #include <ngx_core.h> |
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nginx-0.0.1-2002-09-02-18:48:24 import
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4 #include <ngx_file.h> |
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nginx-0.0.1-2002-09-02-18:48:24 import
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6 ssize_t ngx_read_file(ngx_file_t *file, char *buf, size_t size, off_t offset) |
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7 { |
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8 ssize_t n; |
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nginx-0.0.1-2002-09-02-18:48:24 import
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10 ngx_log_debug(file->log, "read: %x, %d, %qd" _ buf _ size _ offset); |
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11 |
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nginx-0.0.1-2002-09-02-18:48:24 import
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12 n = pread(file->fd, buf, size, offset); |
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nginx-0.0.1-2002-09-07-14:14:25 import
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14 if (n == -1) { |
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15 ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, "read() failed"); |
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16 return NGX_ERROR; |
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17 } |
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nginx-0.0.1-2002-12-21-20:14:50 import
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19 file->offset += n; |
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20 |
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21 return n; |
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nginx-0.0.1-2002-08-23-20:14:30 import
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22 } |
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23 |
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nginx-0.0.1-2002-08-23-20:14:30 import
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24 #if 0 |
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25 |
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26 ssize_t ngx_read_file(ngx_file_t *file, char *buf, size_t size, off_t offset) |
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27 { |
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28 if (!file->read->ready) { |
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29 |
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30 ngx_memzero(&file->iocb, sizeof(iocb)); |
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nginx-0.0.1-2002-08-23-20:14:30 import
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31 file->iocb.aio_fildes = file->fd; |
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32 file->iocb.aio_buf = buf; |
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33 file->iocb.aio_nbytes = size; |
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34 file->iocb.aio_offset = offset; |
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nginx-0.0.1-2002-08-23-20:14:30 import
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35 #if (USE_AIO_KQUEUE) |
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36 file->iocb.aio_sigevent.sigev_notify = SIGEV_KEVENT; |
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37 file->iocb.aio_sigevent.sigev_notify_kqueue = tid->kq; |
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38 file->iocb.aio_sigevent.sigev_value = (union sigval) file; |
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nginx-0.0.1-2002-08-23-20:14:30 import
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39 #endif |
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nginx-0.0.1-2002-08-23-20:14:30 import
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40 #if (USE_AIO_SIGNAL) |
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41 file->iocb.aio_sigevent.sigev_notify = SIGEV_SIGNAL; |
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42 file->iocb.aio_sigevent.sigev_signo = NGX_SIGAIO; |
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nginx-0.0.1-2002-08-23-20:14:30 import
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43 #ifndef __FreeBSD__ |
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44 file->iocb.aio_sigevent.sigev_value.sival_ptr = file; |
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45 #endif |
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46 #endif |
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47 |
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48 if (aio_read(&file->iocb) == -1) { |
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49 ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, |
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50 "aio_read() failed"); |
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51 return NGX_ERROR; |
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52 |
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53 n = aio_error(&file->iocb); |
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54 if (n == EINPROGRESS) |
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55 return NGX_AGAIN; |
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56 |
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57 if (n == -1) { |
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58 ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, |
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59 "aio_read() failed"); |
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60 return NGX_ERROR; |
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61 } |
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62 } |
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63 |
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64 ngx_assert(file->iocb.aio_buf == buf), return NGX_ERROR, |
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65 "ngx_aio_read_file: another buffer is passed"); |
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66 |
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67 n = aio_return(&file->iocb); |
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68 if (n == -1) { |
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69 ngx_log_error(NGX_LOG_ERR, file->log, ngx_errno, |
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70 "aio_read() failed"); |
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71 return NGX_ERROR; |
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72 } |
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73 |
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74 return n; |
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75 } |
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76 |
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77 #endif |