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API change: ngx_chain_update_chains() now requires pool.

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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.
This commit is contained in:
Maxim Dounin 2011-09-15 16:03:17 +00:00
parent a890b313f3
commit d7c2673d3f
7 changed files with 18 additions and 15 deletions
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16
src/core/ngx_buf.c
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@ -180,7 +180,7 @@ ngx_chain_get_free_buf(ngx_pool_t *p, ngx_chain_t **free)
void 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 **out, ngx_buf_tag_t tag)
{ {
ngx_chain_t *cl; ngx_chain_t *cl;
@ -197,19 +197,21 @@ ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy,
*out = NULL; *out = NULL;
while (*busy) { while (*busy) {
if (ngx_buf_size((*busy)->buf) != 0) { cl = *busy;
if (ngx_buf_size(cl->buf) != 0) {
break; break;
} }
if ((*busy)->buf->tag != tag) { if (cl->buf->tag != tag) {
*busy = (*busy)->next; *busy = cl->next;
ngx_free_chain(p, cl);
continue; continue;
} }
(*busy)->buf->pos = (*busy)->buf->start; cl->buf->pos = cl->buf->start;
(*busy)->buf->last = (*busy)->buf->start; cl->buf->last = cl->buf->start;
cl = *busy;
*busy = cl->next; *busy = cl->next;
cl->next = *free; cl->next = *free;
*free = cl; *free = cl;

4
src/core/ngx_buf.h
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@ -154,8 +154,8 @@ ngx_int_t ngx_chain_writer(void *ctx, ngx_chain_t *in);
ngx_int_t ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain, ngx_int_t ngx_chain_add_copy(ngx_pool_t *pool, ngx_chain_t **chain,
ngx_chain_t *in); ngx_chain_t *in);
ngx_chain_t *ngx_chain_get_free_buf(ngx_pool_t *p, ngx_chain_t **free); ngx_chain_t *ngx_chain_get_free_buf(ngx_pool_t *p, ngx_chain_t **free);
void ngx_chain_update_chains(ngx_chain_t **free, ngx_chain_t **busy, void ngx_chain_update_chains(ngx_pool_t *p, ngx_chain_t **free,
ngx_chain_t **out, ngx_buf_tag_t tag); ngx_chain_t **busy, ngx_chain_t **out, ngx_buf_tag_t tag);
#endif /* _NGX_BUF_H_INCLUDED_ */ #endif /* _NGX_BUF_H_INCLUDED_ */

3
src/core/ngx_output_chain.c
View File

@ -208,7 +208,8 @@ ngx_output_chain(ngx_output_chain_ctx_t *ctx, ngx_chain_t *in)
return last; return last;
} }
ngx_chain_update_chains(&ctx->free, &ctx->busy, &out, ctx->tag); ngx_chain_update_chains(ctx->pool, &ctx->free, &ctx->busy, &out,
ctx->tag);
last_out = &out; last_out = &out;
} }
} }

2
src/event/ngx_event_pipe.c
View File

@ -638,7 +638,7 @@ ngx_event_pipe_write_to_downstream(ngx_event_pipe_t *p)
return ngx_event_pipe_drain_chains(p); return ngx_event_pipe_drain_chains(p);
} }
ngx_chain_update_chains(&p->free, &p->busy, &out, p->tag); ngx_chain_update_chains(p->pool, &p->free, &p->busy, &out, p->tag);
for (cl = p->free; cl; cl = cl->next) { for (cl = p->free; cl; cl = cl->next) {

2
src/http/modules/ngx_http_chunked_filter_module.c
View File

@ -221,7 +221,7 @@ ngx_http_chunked_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
rc = ngx_http_next_body_filter(r, out); rc = ngx_http_next_body_filter(r, out);
ngx_chain_update_chains(&ctx->free, &ctx->busy, &out, ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &out,
(ngx_buf_tag_t) &ngx_http_chunked_filter_module); (ngx_buf_tag_t) &ngx_http_chunked_filter_module);
return rc; return rc;

4
src/http/modules/ngx_http_gzip_filter_module.c
View File

@ -378,7 +378,7 @@ ngx_http_gzip_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
cl = NULL; cl = NULL;
ngx_chain_update_chains(&ctx->free, &ctx->busy, &cl, ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &cl,
(ngx_buf_tag_t) &ngx_http_gzip_filter_module); (ngx_buf_tag_t) &ngx_http_gzip_filter_module);
ctx->nomem = 0; ctx->nomem = 0;
} }
@ -448,7 +448,7 @@ ngx_http_gzip_body_filter(ngx_http_request_t *r, ngx_chain_t *in)
ngx_http_gzip_filter_free_copy_buf(r, ctx); ngx_http_gzip_filter_free_copy_buf(r, ctx);
ngx_chain_update_chains(&ctx->free, &ctx->busy, &ctx->out, ngx_chain_update_chains(r->pool, &ctx->free, &ctx->busy, &ctx->out,
(ngx_buf_tag_t) &ngx_http_gzip_filter_module); (ngx_buf_tag_t) &ngx_http_gzip_filter_module);
ctx->last_out = &ctx->out; ctx->last_out = &ctx->out;

2
src/http/ngx_http_upstream.c
View File

@ -2382,7 +2382,7 @@ ngx_http_upstream_process_non_buffered_request(ngx_http_request_t *r,
return; return;
} }
ngx_chain_update_chains(&u->free_bufs, &u->busy_bufs, ngx_chain_update_chains(r->pool, &u->free_bufs, &u->busy_bufs,
&u->out_bufs, u->output.tag); &u->out_bufs, u->output.tag);
} }