nginx/src/core/ngx_palloc.h

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#ifndef _NGX_PALLOC_H_INCLUDED_
#define _NGX_PALLOC_H_INCLUDED_
#include <ngx_config.h>
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#include <ngx_core.h>
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/*
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* NGX_MAX_ALLOC_FROM_POOL should be (ngx_page_size - 1), i.e. 4095 on x86.
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* On FreeBSD 5.x it allows to use zero copy send.
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* On Windows NT it decreases a number of locked pages in a kernel.
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*/
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#define NGX_MAX_ALLOC_FROM_POOL (ngx_pagesize - 1)
#define NGX_DEFAULT_POOL_SIZE (16 * 1024)
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#define ngx_test_null(p, alloc, rc) if ((p = alloc) == NULL) { return rc; }
typedef struct ngx_pool_large_s ngx_pool_large_t;
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struct ngx_pool_large_s {
ngx_pool_large_t *next;
void *alloc;
};
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struct ngx_pool_s {
char *last;
char *end;
ngx_pool_t *next;
ngx_pool_large_t *large;
ngx_log_t *log;
};
void *ngx_alloc(size_t size, ngx_log_t *log);
void *ngx_calloc(size_t size, ngx_log_t *log);
ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log);
void ngx_destroy_pool(ngx_pool_t *pool);
void *ngx_palloc(ngx_pool_t *pool, size_t size);
void *ngx_pcalloc(ngx_pool_t *pool, size_t size);
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void ngx_pfree(ngx_pool_t *pool, void *p);
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#endif /* _NGX_PALLOC_H_INCLUDED_ */