Mercurial > hg > nginx
annotate src/core/ngx_hunk.c @ 66:4876cd4a36bb
nginx-0.0.1-2003-03-05-20:30:51 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Wed, 05 Mar 2003 17:30:51 +0000 |
parents | cd035a94e0b6 |
children | 5a7d1aaa1618 |
rev | line source |
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nginx-0.0.1-2002-08-06-20:39:45 import
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1 |
42
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nginx-0.0.1-2002-12-27-10:27:47 import
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2 #include <ngx_config.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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4 |
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nginx-0.0.1-2002-09-02-18:48:24 import
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6 ngx_hunk_t *ngx_create_temp_hunk(ngx_pool_t *pool, int size, |
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nginx-0.0.1-2002-09-02-18:48:24 import
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7 int before, int after) |
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nginx-0.0.1-2002-08-06-20:39:45 import
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8 { |
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9 ngx_hunk_t *h; |
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10 |
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nginx-0.0.1-2002-09-26-20:50:29 import
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11 ngx_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL); |
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nginx-0.0.1-2002-09-02-18:48:24 import
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13 #if !(HAVE_OFFSET_EQUAL_PTR) |
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nginx-0.0.1-2002-08-15-21:20:26 import
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14 h->pos.file = h->last.file = 0; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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15 #endif |
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17 ngx_test_null(h->pre_start, ngx_palloc(pool, size + before + after), NULL); |
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18 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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19 h->end = h->last.mem + size; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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20 h->post_end = h->end + after; |
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21 |
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nginx-0.0.1-2002-08-06-20:39:45 import
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22 h->type = NGX_HUNK_TEMP; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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23 h->tag = 0; |
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nginx-0.0.1-2002-09-02-18:48:24 import
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24 h->file = NULL; |
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25 |
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26 return h; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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27 } |
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28 |
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29 ngx_hunk_t *ngx_create_hunk_before(ngx_pool_t *pool, ngx_hunk_t *hunk, int size) |
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30 { |
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31 ngx_hunk_t *h; |
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32 |
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33 ngx_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL); |
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34 |
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35 #if !(HAVE_OFFSET_EQUAL_PTR) |
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nginx-0.0.1-2002-08-15-21:20:26 import
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36 h->pos.file = h->last.file = 0; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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37 #endif |
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38 |
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nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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39 if (hunk->type & NGX_HUNK_TEMP && hunk->pos.mem - hunk->pre_start >= size) { |
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nginx-0.0.1-2002-08-06-20:39:45 import
Igor Sysoev <igor@sysoev.ru>
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40 /* keep hunk->start unchanged - used in restore */ |
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nginx-0.0.1-2002-08-06-20:39:45 import
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41 h->pre_start = hunk->pre_start; |
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nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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42 h->end = h->post_end = hunk->pre_start = hunk->pos.mem; |
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nginx-0.0.1-2002-08-15-21:20:26 import
Igor Sysoev <igor@sysoev.ru>
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43 h->start = h->pos.mem = h->last.mem = h->end - size; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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44 |
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45 h->type = NGX_HUNK_TEMP; |
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nginx-0.0.1-2002-08-06-20:39:45 import
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46 h->tag = 0; |
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nginx-0.0.1-2002-09-02-18:48:24 import
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47 h->file = NULL; |
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48 |
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49 } else { |
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nginx-0.0.1-2002-09-26-20:50:29 import
Igor Sysoev <igor@sysoev.ru>
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50 ngx_test_null(h->pre_start, ngx_palloc(pool, size), NULL); |
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51 h->start = h->pos.mem = h->last.mem = h->pre_start; |
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52 h->end = h->post_end = h->start + size; |
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53 |
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54 h->type = NGX_HUNK_TEMP; |
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55 h->tag = 0; |
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56 h->file = NULL; |
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57 } |
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58 |
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59 return h; |
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60 } |
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61 |
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62 ngx_hunk_t *ngx_create_hunk_after(ngx_pool_t *pool, ngx_hunk_t *hunk, int size) |
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63 { |
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64 ngx_hunk_t *h; |
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65 |
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66 ngx_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL); |
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67 |
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68 #if !(HAVE_OFFSET_EQUAL_PTR) |
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69 h->pos.file = h->last.file = 0; |
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70 #endif |
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71 |
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72 if (hunk->type & NGX_HUNK_TEMP |
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73 && hunk->last.mem == hunk->end |
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74 && hunk->post_end - hunk->end >= size) |
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75 { |
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76 h->post_end = hunk->post_end; |
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77 h->pre_start = h->start = h->pos.mem = h->last.mem = hunk->post_end = |
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78 hunk->last.mem; |
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79 h->type = NGX_HUNK_TEMP; |
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80 h->tag = 0; |
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81 h->file = NULL; |
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82 |
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83 } else { |
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84 ngx_test_null(h->pre_start, ngx_palloc(pool, size), NULL); |
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85 h->start = h->pos.mem = h->last.mem = h->pre_start; |
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86 h->end = h->post_end = h->start + size; |
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87 |
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88 h->type = NGX_HUNK_TEMP; |
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89 h->tag = 0; |
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90 h->file = NULL; |
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91 } |
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92 |
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93 return h; |
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94 } |