[nginx] Cache: added ngx_quit check to ngx_http_file_cache_expir...

[Maxim Dounin]

details:   http://hg.nginx.org/nginx/rev/5748ce74c1cc
branches:  
changeset: 5679:5748ce74c1cc
user:      Maxim Dounin <mdounin at mdounin.ru>
date:      Wed Apr 30 19:16:35 2014 +0400
description:
Cache: added ngx_quit check to ngx_http_file_cache_expire().

While managing big caches it is possible that expiring old cache items
in ngx_http_file_cache_expire() will take a while.  Added a check for
ngx_quit / ngx_terminate to make sure cache manager can be terminated
while in ngx_http_file_cache_expire().

diffstat:

 src/http/ngx_http_file_cache.c |  5 +++++
 1 files changed, 5 insertions(+), 0 deletions(-)

diffs (15 lines):

diff --git a/src/http/ngx_http_file_cache.c b/src/http/ngx_http_file_cache.c
--- a/src/http/ngx_http_file_cache.c
+++ b/src/http/ngx_http_file_cache.c
@@ -1313,6 +1313,11 @@ ngx_http_file_cache_expire(ngx_http_file
 
     for ( ;; ) {
 
+        if (ngx_quit || ngx_terminate) {
+            wait = 1;
+            break;
+        }
+
         if (ngx_queue_empty(&cache->sh->queue)) {
             wait = 10;
             break;