Mercurial > hg > nginx-quic
annotate src/core/ngx_hunk.c @ 1:d220029ac7f3
nginx-0.0.1-2002-08-15-21:20:26 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Thu, 15 Aug 2002 17:20:26 +0000 |
parents | 4eff17414a43 |
children | 34a521b1a148 |
rev | line source |
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nginx-0.0.1-2002-08-06-20:39:45 import
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1 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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2 #include <ngx_types.h> |
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nginx-0.0.1-2002-08-06-20:39:45 import
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3 #include <ngx_hunk.h> |
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nginx-0.0.1-2002-08-06-20:39:45 import
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4 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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5 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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6 ngx_hunk_t *ngx_get_hunk(ngx_pool_t *pool, int size, int before, int after) |
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7 { |
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nginx-0.0.1-2002-08-06-20:39:45 import
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8 ngx_hunk_t *h = ngx_palloc(pool, sizeof(ngx_hunk_t)); |
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9 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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10 #ifndef OFF_EQUAL_PTR |
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11 h->pos.file = h->last.file = 0; |
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12 #endif |
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13 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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14 h->pre_start = ngx_palloc(pool, size + before + after); |
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15 h->start = h->pos.mem = h->last.mem = h->pre_start + before; |
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nginx-0.0.1-2002-08-15-21:20:26 import
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16 h->end = h->last.mem + size; |
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17 h->post_end = h->end + after; |
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18 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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19 h->type = NGX_HUNK_TEMP; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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20 h->tag = 0; |
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21 h->fd = (ngx_file_t) -1; |
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22 |
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23 return h; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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24 } |
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25 |
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26 ngx_hunk_t *ngx_get_hunk_before(ngx_pool_t *pool, ngx_hunk_t *hunk, int size) |
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27 { |
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28 ngx_hunk_t *h = ngx_palloc(pool, sizeof(ngx_hunk_t)); |
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29 |
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30 #ifndef OFF_EQUAL_PTR |
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31 h->pos.file = h->last.file = 0; |
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32 #endif |
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33 |
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34 if (hunk->type & NGX_HUNK_TEMP && hunk->pos.mem - hunk->pre_start >= size) { |
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35 /* keep hunk->start unchanged - used in restore */ |
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36 h->pre_start = hunk->pre_start; |
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37 h->end = h->post_end = hunk->pre_start = hunk->pos.mem; |
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38 h->start = h->pos.mem = h->last.mem = h->end - size; |
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39 |
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40 h->type = NGX_HUNK_TEMP; |
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41 h->tag = 0; |
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42 h->fd = (ngx_file_t) -1; |
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43 |
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44 } else { |
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45 h->pre_start = h->start = h->pos.mem = h->last.mem |
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46 = ngx_palloc(pool, size); |
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47 h->end = h->post_end = h->start + size; |
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48 |
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49 h->type = NGX_HUNK_TEMP; |
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50 h->tag = 0; |
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51 h->fd = (ngx_file_t) -1; |
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52 } |
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53 |
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54 return h; |
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55 } |
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56 |
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57 ngx_hunk_t *ngx_get_hunk_after(ngx_pool_t *pool, ngx_hunk_t *hunk, int size) |
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58 { |
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59 ngx_hunk_t *h = ngx_palloc(pool, sizeof(ngx_hunk_t)); |
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60 |
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61 #ifndef OFF_EQUAL_PTR |
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62 h->pos.file = h->last.file = 0; |
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63 #endif |
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64 |
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65 if (hunk->type & NGX_HUNK_TEMP |
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66 && hunk->last.mem == hunk->end |
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67 && hunk->post_end - hunk->end >= size) |
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68 { |
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69 h->post_end = hunk->post_end; |
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70 h->pre_start = h->start = h->pos.mem = h->last.mem = hunk->post_end = |
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71 hunk->last.mem; |
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72 h->type = NGX_HUNK_TEMP; |
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73 h->tag = 0; |
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74 h->fd = (ngx_file_t) -1; |
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75 |
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76 } else { |
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77 h->pre_start = h->start = h->pos.mem = h->last.mem = |
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78 ngx_palloc(pool, size); |
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79 h->end = h->post_end = h->start + size; |
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80 |
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81 h->type = NGX_HUNK_TEMP; |
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82 h->tag = 0; |
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83 h->fd = (ngx_file_t) -1; |
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84 } |
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85 |
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86 return h; |
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87 } |