Mercurial > hg > nginx-quic
annotate src/core/ngx_palloc.h @ 8509:5b0c229ba5fe quic
QUIC: fixed padding calculation.
Sometimes, QUIC packets need to be of certain (or minimal) size. This is
achieved by adding PADDING frames. It is possible, that adding padding will
affect header size, thus forcing us to recalculate padding size once more.
author | Vladimir Homutov <vl@nginx.com> |
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date | Mon, 05 Jul 2021 13:17:10 +0300 |
parents | ef935cd7ed8d |
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rev | line source |
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2 /* |
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3 * Copyright (C) Igor Sysoev |
4412 | 4 * Copyright (C) Nginx, Inc. |
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5 */ |
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8 #ifndef _NGX_PALLOC_H_INCLUDED_ |
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9 #define _NGX_PALLOC_H_INCLUDED_ |
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12 #include <ngx_config.h> |
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13 #include <ngx_core.h> |
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16 /* |
589 | 17 * NGX_MAX_ALLOC_FROM_POOL should be (ngx_pagesize - 1), i.e. 4095 on x86. |
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18 * On Windows NT it decreases a number of locked pages in a kernel. |
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19 */ |
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20 #define NGX_MAX_ALLOC_FROM_POOL (ngx_pagesize - 1) |
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21 |
1200 | 22 #define NGX_DEFAULT_POOL_SIZE (16 * 1024) |
3388 | 23 |
24 #define NGX_POOL_ALIGNMENT 16 | |
1200 | 25 #define NGX_MIN_POOL_SIZE \ |
3388 | 26 ngx_align((sizeof(ngx_pool_t) + 2 * sizeof(ngx_pool_large_t)), \ |
27 NGX_POOL_ALIGNMENT) | |
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29 |
509 | 30 typedef void (*ngx_pool_cleanup_pt)(void *data); |
31 | |
32 typedef struct ngx_pool_cleanup_s ngx_pool_cleanup_t; | |
33 | |
34 struct ngx_pool_cleanup_s { | |
35 ngx_pool_cleanup_pt handler; | |
36 void *data; | |
37 ngx_pool_cleanup_t *next; | |
38 }; | |
39 | |
40 | |
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41 typedef struct ngx_pool_large_s ngx_pool_large_t; |
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43 struct ngx_pool_large_s { |
509 | 44 ngx_pool_large_t *next; |
45 void *alloc; | |
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46 }; |
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48 |
2049 | 49 typedef struct { |
509 | 50 u_char *last; |
51 u_char *end; | |
2049 | 52 ngx_pool_t *next; |
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53 ngx_uint_t failed; |
2049 | 54 } ngx_pool_data_t; |
55 | |
56 | |
57 struct ngx_pool_s { | |
58 ngx_pool_data_t d; | |
59 size_t max; | |
581 | 60 ngx_pool_t *current; |
509 | 61 ngx_chain_t *chain; |
62 ngx_pool_large_t *large; | |
63 ngx_pool_cleanup_t *cleanup; | |
64 ngx_log_t *log; | |
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65 }; |
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67 |
509 | 68 typedef struct { |
69 ngx_fd_t fd; | |
70 u_char *name; | |
71 ngx_log_t *log; | |
72 } ngx_pool_cleanup_file_t; | |
73 | |
74 | |
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75 ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log); |
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76 void ngx_destroy_pool(ngx_pool_t *pool); |
2337 | 77 void ngx_reset_pool(ngx_pool_t *pool); |
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79 void *ngx_palloc(ngx_pool_t *pool, size_t size); |
2049 | 80 void *ngx_pnalloc(ngx_pool_t *pool, size_t size); |
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81 void *ngx_pcalloc(ngx_pool_t *pool, size_t size); |
2129 | 82 void *ngx_pmemalign(ngx_pool_t *pool, size_t size, size_t alignment); |
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83 ngx_int_t ngx_pfree(ngx_pool_t *pool, void *p); |
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563 | 86 ngx_pool_cleanup_t *ngx_pool_cleanup_add(ngx_pool_t *p, size_t size); |
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87 void ngx_pool_run_cleanup_file(ngx_pool_t *p, ngx_fd_t fd); |
509 | 88 void ngx_pool_cleanup_file(void *data); |
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89 void ngx_pool_delete_file(void *data); |
509 | 90 |
91 | |
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92 #endif /* _NGX_PALLOC_H_INCLUDED_ */ |