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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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660
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4 * Copyright (C) Nginx, Inc.
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5 */
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6
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7
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8 #ifndef _NGX_PALLOC_H_INCLUDED_
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9 #define _NGX_PALLOC_H_INCLUDED_
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10
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11
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12 #include <ngx_config.h>
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13 #include <ngx_core.h>
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14
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15
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16 /*
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138
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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
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300
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22 #define NGX_DEFAULT_POOL_SIZE (16 * 1024)
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558
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23
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24 #define NGX_POOL_ALIGNMENT 16
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300
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25 #define NGX_MIN_POOL_SIZE \
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558
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26 ngx_align((sizeof(ngx_pool_t) + 2 * sizeof(ngx_pool_large_t)), \
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27 NGX_POOL_ALIGNMENT)
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0
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28
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29
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58
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30 typedef void (*ngx_pool_cleanup_pt)(void *data);
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31
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32 typedef struct ngx_pool_cleanup_s ngx_pool_cleanup_t;
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33
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34 struct ngx_pool_cleanup_s {
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35 ngx_pool_cleanup_pt handler;
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36 void *data;
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37 ngx_pool_cleanup_t *next;
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38 };
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39
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40
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0
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41 typedef struct ngx_pool_large_s ngx_pool_large_t;
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42
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43 struct ngx_pool_large_s {
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58
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44 ngx_pool_large_t *next;
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45 void *alloc;
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0
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46 };
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47
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48
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382
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49 typedef struct {
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58
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50 u_char *last;
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51 u_char *end;
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382
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52 ngx_pool_t *next;
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498
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53 ngx_uint_t failed;
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382
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54 } ngx_pool_data_t;
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55
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56
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57 struct ngx_pool_s {
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58 ngx_pool_data_t d;
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59 size_t max;
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130
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60 ngx_pool_t *current;
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58
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61 ngx_chain_t *chain;
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62 ngx_pool_large_t *large;
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63 ngx_pool_cleanup_t *cleanup;
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64 ngx_log_t *log;
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65 };
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66
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67
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58
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68 typedef struct {
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69 ngx_fd_t fd;
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70 u_char *name;
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71 ngx_log_t *log;
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72 } ngx_pool_cleanup_file_t;
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73
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74
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0
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75 void *ngx_alloc(size_t size, ngx_log_t *log);
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76 void *ngx_calloc(size_t size, ngx_log_t *log);
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77
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78 ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log);
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79 void ngx_destroy_pool(ngx_pool_t *pool);
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422
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80 void ngx_reset_pool(ngx_pool_t *pool);
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0
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81
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82 void *ngx_palloc(ngx_pool_t *pool, size_t size);
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382
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83 void *ngx_pnalloc(ngx_pool_t *pool, size_t size);
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0
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84 void *ngx_pcalloc(ngx_pool_t *pool, size_t size);
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390
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85 void *ngx_pmemalign(ngx_pool_t *pool, size_t size, size_t alignment);
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0
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86 ngx_int_t ngx_pfree(ngx_pool_t *pool, void *p);
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87
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88
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112
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89 ngx_pool_cleanup_t *ngx_pool_cleanup_add(ngx_pool_t *p, size_t size);
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464
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90 void ngx_pool_run_cleanup_file(ngx_pool_t *p, ngx_fd_t fd);
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58
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91 void ngx_pool_cleanup_file(void *data);
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278
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92 void ngx_pool_delete_file(void *data);
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58
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93
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94
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95 #endif /* _NGX_PALLOC_H_INCLUDED_ */
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