Mercurial > hg > nginx-quic
annotate src/core/ngx_hunk.c @ 34:95f1c2a938f3
nginx-0.0.1-2002-12-20-09:54:55 import
author | Igor Sysoev <igor@sysoev.ru> |
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date | Fri, 20 Dec 2002 06:54:55 +0000 |
parents | 6ce4755737b4 |
children | cd035a94e0b6 |
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_hunk.h> |
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3 |
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4 |
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5 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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6 int before, int after) |
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nginx-0.0.1-2002-08-06-20:39:45 import
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7 { |
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8 ngx_hunk_t *h; |
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9 |
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10 ngx_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL); |
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11 |
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12 #if !(HAVE_OFFSET_EQUAL_PTR) |
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13 h->pos.file = h->last.file = 0; |
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14 #endif |
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15 |
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16 ngx_test_null(h->pre_start, ngx_palloc(pool, size + before + after), NULL); |
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17 h->start = h->pos.mem = h->last.mem = h->pre_start + before; |
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18 h->end = h->last.mem + size; |
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19 h->post_end = h->end + after; |
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20 |
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21 h->type = NGX_HUNK_TEMP; |
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22 h->tag = 0; |
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23 h->file = NULL; |
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24 |
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25 return h; |
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26 } |
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27 |
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28 ngx_hunk_t *ngx_create_hunk_before(ngx_pool_t *pool, ngx_hunk_t *hunk, int size) |
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29 { |
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30 ngx_hunk_t *h; |
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31 |
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32 ngx_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL); |
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33 |
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34 #if !(HAVE_OFFSET_EQUAL_PTR) |
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35 h->pos.file = h->last.file = 0; |
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36 #endif |
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37 |
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38 if (hunk->type & NGX_HUNK_TEMP && hunk->pos.mem - hunk->pre_start >= size) { |
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39 /* keep hunk->start unchanged - used in restore */ |
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40 h->pre_start = hunk->pre_start; |
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41 h->end = h->post_end = hunk->pre_start = hunk->pos.mem; |
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42 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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43 |
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44 h->type = NGX_HUNK_TEMP; |
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45 h->tag = 0; |
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46 h->file = NULL; |
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47 |
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48 } else { |
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49 ngx_test_null(h->pre_start, ngx_palloc(pool, size), NULL); |
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50 h->start = h->pos.mem = h->last.mem = h->pre_start; |
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51 h->end = h->post_end = h->start + size; |
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52 |
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53 h->type = NGX_HUNK_TEMP; |
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54 h->tag = 0; |
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55 h->file = NULL; |
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56 } |
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57 |
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58 return h; |
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59 } |
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60 |
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61 ngx_hunk_t *ngx_create_hunk_after(ngx_pool_t *pool, ngx_hunk_t *hunk, int size) |
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62 { |
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63 ngx_hunk_t *h; |
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64 |
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65 ngx_test_null(h, ngx_palloc(pool, sizeof(ngx_hunk_t)), NULL); |
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66 |
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67 #if !(HAVE_OFFSET_EQUAL_PTR) |
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68 h->pos.file = h->last.file = 0; |
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69 #endif |
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70 |
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71 if (hunk->type & NGX_HUNK_TEMP |
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72 && hunk->last.mem == hunk->end |
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73 && hunk->post_end - hunk->end >= size) |
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74 { |
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75 h->post_end = hunk->post_end; |
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76 h->pre_start = h->start = h->pos.mem = h->last.mem = hunk->post_end = |
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77 hunk->last.mem; |
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78 h->type = NGX_HUNK_TEMP; |
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79 h->tag = 0; |
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80 h->file = NULL; |
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81 |
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82 } else { |
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83 ngx_test_null(h->pre_start, ngx_palloc(pool, size), NULL); |
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84 h->start = h->pos.mem = h->last.mem = h->pre_start; |
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85 h->end = h->post_end = h->start + size; |
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86 |
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87 h->type = NGX_HUNK_TEMP; |
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88 h->tag = 0; |
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89 h->file = NULL; |
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90 } |
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91 |
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92 return h; |
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93 } |