Annotation of embedaddon/nginx/src/core/ngx_palloc.h, revision 1.1.1.1
1.1 misho 1:
2: /*
3: * Copyright (C) Igor Sysoev
4: * Copyright (C) Nginx, Inc.
5: */
6:
7:
8: #ifndef _NGX_PALLOC_H_INCLUDED_
9: #define _NGX_PALLOC_H_INCLUDED_
10:
11:
12: #include <ngx_config.h>
13: #include <ngx_core.h>
14:
15:
16: /*
17: * NGX_MAX_ALLOC_FROM_POOL should be (ngx_pagesize - 1), i.e. 4095 on x86.
18: * On Windows NT it decreases a number of locked pages in a kernel.
19: */
20: #define NGX_MAX_ALLOC_FROM_POOL (ngx_pagesize - 1)
21:
22: #define NGX_DEFAULT_POOL_SIZE (16 * 1024)
23:
24: #define NGX_POOL_ALIGNMENT 16
25: #define NGX_MIN_POOL_SIZE \
26: ngx_align((sizeof(ngx_pool_t) + 2 * sizeof(ngx_pool_large_t)), \
27: NGX_POOL_ALIGNMENT)
28:
29:
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:
41: typedef struct ngx_pool_large_s ngx_pool_large_t;
42:
43: struct ngx_pool_large_s {
44: ngx_pool_large_t *next;
45: void *alloc;
46: };
47:
48:
49: typedef struct {
50: u_char *last;
51: u_char *end;
52: ngx_pool_t *next;
53: ngx_uint_t failed;
54: } ngx_pool_data_t;
55:
56:
57: struct ngx_pool_s {
58: ngx_pool_data_t d;
59: size_t max;
60: ngx_pool_t *current;
61: ngx_chain_t *chain;
62: ngx_pool_large_t *large;
63: ngx_pool_cleanup_t *cleanup;
64: ngx_log_t *log;
65: };
66:
67:
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:
75: void *ngx_alloc(size_t size, ngx_log_t *log);
76: void *ngx_calloc(size_t size, ngx_log_t *log);
77:
78: ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log);
79: void ngx_destroy_pool(ngx_pool_t *pool);
80: void ngx_reset_pool(ngx_pool_t *pool);
81:
82: void *ngx_palloc(ngx_pool_t *pool, size_t size);
83: void *ngx_pnalloc(ngx_pool_t *pool, size_t size);
84: void *ngx_pcalloc(ngx_pool_t *pool, size_t size);
85: void *ngx_pmemalign(ngx_pool_t *pool, size_t size, size_t alignment);
86: ngx_int_t ngx_pfree(ngx_pool_t *pool, void *p);
87:
88:
89: ngx_pool_cleanup_t *ngx_pool_cleanup_add(ngx_pool_t *p, size_t size);
90: void ngx_pool_run_cleanup_file(ngx_pool_t *p, ngx_fd_t fd);
91: void ngx_pool_cleanup_file(void *data);
92: void ngx_pool_delete_file(void *data);
93:
94:
95: #endif /* _NGX_PALLOC_H_INCLUDED_ */
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