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diff src/core/ngx_buf.c @ 4114:5db098f97e0e

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API change: ngx_chain_update_chains() now requires pool. The ngx_chain_update_chains() needs pool to free chain links used for buffers with non-matching tags. Providing one helps to reduce memory consumption for long-lived requests.
author Maxim Dounin <mdounin@mdounin.ru>
date Thu, 15 Sep 2011 16:03:17 +0000
parents cc13ff6d5c07
children d620f497c50f
line wrap: on
line diff
--- a/src/core/ngx_buf.c
+++ b/src/core/ngx_buf.c
@@ -180,7 +180,7 @@ ngx_chain_get_free_buf(ngx_pool_t *p, ng
 
 
 void
-ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy,
+ngx_chain_update_chains(ngx_pool_t *p, ngx_chain_t **free, ngx_chain_t **busy,
     ngx_chain_t **out, ngx_buf_tag_t tag)
 {
     ngx_chain_t  *cl;
@@ -197,19 +197,21 @@ ngx_chain_update_chains(ngx_chain_t **fr
     *out = NULL;
 
     while (*busy) {
-        if (ngx_buf_size((*busy)->buf) != 0) {
+        cl = *busy;
+
+        if (ngx_buf_size(cl->buf) != 0) {
             break;
         }
 
-        if ((*busy)->buf->tag != tag) {
-            *busy = (*busy)->next;
+        if (cl->buf->tag != tag) {
+            *busy = cl->next;
+            ngx_free_chain(p, cl);
             continue;
         }
 
-        (*busy)->buf->pos = (*busy)->buf->start;
-        (*busy)->buf->last = (*busy)->buf->start;
+        cl->buf->pos = cl->buf->start;
+        cl->buf->last = cl->buf->start;
 
-        cl = *busy;
         *busy = cl->next;
         cl->next = *free;
         *free = cl;