details: http://hg.nginx.org/nginx/rev/ea12328518dc
branches:
changeset: 6824:ea12328518dc
user: Ruslan Ermilov <ru@nginx.com>
date: Wed Dec 07 22:25:37 2016 +0300
description:
Slab: added comment about list heads.

diffstat:

src/core/ngx_slab.c | 5 ++++-
1 files changed, 4 insertions(+), 1 deletions(-)

diffs (23 lines):

diff -r 88c8c3d65184 -r ea12328518dc src/core/ngx_slab.c
--- a/src/core/ngx_slab.c Wed Dec 07 22:25:37 2016 +0300
+++ b/src/core/ngx_slab.c Wed Dec 07 22:25:37 2016 +0300
@@ -113,6 +113,7 @@ ngx_slab_init(ngx_slab_pool_t *pool)
n = ngx_pagesize_shift - pool->min_shift;

for (i = 0; i < n; i++) {
+ /* only "next" is used in list head */
slots[i].slab = 0;
slots[i].next = &slots[i];
slots[i].prev = 0;
@@ -127,8 +128,10 @@ ngx_slab_init(ngx_slab_pool_t *pool)

page = pool->pages;

+ /* only "next" is used in list head */
+ pool->free.slab = 0;
+ pool->free.next = page;
pool->free.prev = 0;
- pool->free.next = page;

page->slab = pages;
page->next = &pool->free;
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