Mercurial > hg > nginx-quic
view src/core/ngx_alloc.c @ 63:36d2c25cc9bb
nginx-0.0.1-2003-02-26-23:21:43 import
author | Igor Sysoev <igor@sysoev.ru> |
---|---|
date | Wed, 26 Feb 2003 20:21:43 +0000 |
parents | 83fa61cd3d2f |
children | 5f6d848dcbef |
line wrap: on
line source
#include <ngx_config.h> #include <ngx_errno.h> #include <ngx_log.h> #include <ngx_string.h> #include <ngx_alloc.h> void *ngx_alloc(size_t size, ngx_log_t *log) { void *p; p = malloc(size); if (p == NULL) { ngx_log_error(NGX_LOG_EMERG, log, ngx_errno, "malloc() %d bytes failed", size); } #if (NGX_DEBUG_ALLOC) ngx_log_debug(log, "malloc: %08x:%d" _ p _ size); #endif return p; } void *ngx_calloc(size_t size, ngx_log_t *log) { void *p; p = ngx_alloc(size, log); if (p) { ngx_memzero(p, size); } return p; } ngx_pool_t *ngx_create_pool(size_t size, ngx_log_t *log) { ngx_pool_t *p; ngx_test_null(p, ngx_alloc(size, log), NULL); p->last = (char *) p + sizeof(ngx_pool_t); p->end = (char *) p + size; p->next = NULL; p->large = NULL; p->log = log; return p; } void ngx_destroy_pool(ngx_pool_t *pool) { ngx_pool_t *p, *n; ngx_pool_large_t *l; for (l = pool->large; l; l = l->next) { #if (NGX_DEBUG_ALLOC) ngx_log_debug(pool->log, "free: %08x" _ l->alloc); #endif free(l->alloc); } for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { #if (NGX_DEBUG_ALLOC) ngx_log_debug(pool->log, "free: %08x" _ p); #endif free(p); if (n == NULL) { break; } } } void *ngx_palloc(ngx_pool_t *pool, size_t size) { void *m; ngx_pool_t *p, *n; ngx_pool_large_t *large, *last; if (size <= NGX_MAX_ALLOC_FROM_POOL) { for (p = pool, n = pool->next; /* void */; p = n, n = n->next) { if ((size_t) (p->end - ngx_align(p->last)) >= size) { m = ngx_align(p->last); p->last = ngx_align(p->last); p->last += size ; return m; } if (n == NULL) { break; } } /* alloc new pool block */ ngx_test_null(n, ngx_create_pool(p->end - (char *) p, p->log), NULL); p->next = n; m = n->last; n->last += size; return m; /* alloc large block */ } else { large = NULL; last = NULL; if (pool->large) { for (last = pool->large; /* void */; last = last->next) { if (last->alloc == NULL) { large = last; last = NULL; break; } if (last->next == NULL) { break; } } } if (large == NULL) { ngx_test_null(large, ngx_palloc(pool, sizeof(ngx_pool_large_t)), NULL); large->next = NULL; } ngx_test_null(p, ngx_alloc(size, pool->log), NULL); if (pool->large == NULL) { pool->large = large; } else if (last) { last->next = large; } large->alloc = p; return p; } } void *ngx_pcalloc(ngx_pool_t *pool, size_t size) { void *p; p = ngx_palloc(pool, size); if (p) { ngx_memzero(p, size); } return p; }