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comparison src/core/ngx_buf.c @ 6797:40c2f3e06d23

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Core: slight optimization in ngx_chain_update_chains(). It is not necessary to traverse *busy and link the *out when *out is NULL.
author hucongcong <hucong.c@foxmail.com>
date Thu, 10 Nov 2016 10:17:53 +0800
parents ac3f78219f85
children 7cc2d3a96ea3
comparison
equal deleted inserted replaced
6796:92ad1c92bcf9 6797:40c2f3e06d23
184 ngx_chain_update_chains(ngx_pool_t *p, ngx_chain_t **free, ngx_chain_t **busy, 184 ngx_chain_update_chains(ngx_pool_t *p, ngx_chain_t **free, ngx_chain_t **busy,
185 ngx_chain_t **out, ngx_buf_tag_t tag) 185 ngx_chain_t **out, ngx_buf_tag_t tag)
186 { 186 {
187 ngx_chain_t *cl; 187 ngx_chain_t *cl;
188 188
189 if (*busy == NULL) { 189 if (*out) {
190 *busy = *out; 190 if (*busy == NULL) {
191 191 *busy = *out;
192 } else { 192
193 for (cl = *busy; cl->next; cl = cl->next) { /* void */ } 193 } else {
194 194 for (cl = *busy; cl->next; cl = cl->next) { /* void */ }
195 cl->next = *out; 195
196 } 196 cl->next = *out;
197 197 }
198 *out = NULL; 198
199 *out = NULL;
200 }
199 201
200 while (*busy) { 202 while (*busy) {
201 cl = *busy; 203 cl = *busy;
202 204
203 if (ngx_buf_size(cl->buf) != 0) { 205 if (ngx_buf_size(cl->buf) != 0) {