merge r2895, r2896, r2926, r2927, r2928, r2930, and r2936:

various proxy/fastcgi cache features and fixes:

*) report about proxy/fastcgi_store and proxy/fastcgi_cache incompatibility
*) delete useless r->cache->uses
*) proxy_cache_use_stale/fastcgi_cache_use_stale  updating
*) inherit proxy_set_header, proxy_hide_header, and fastcgi_hide_header
   only if cache settings are similar
*) add response file uniq while loading cold cache on demand

1 files changed, 3 insertions, 8 deletions

diff --git a/src/http/ngx_http_cache.h b/src/http/ngx_http_cache.h
index 232f09674..cf909cc3d 100644
--- a/src/http/ngx_http_cache.h
+++ b/src/http/ngx_http_cache.h
@@ -13,11 +13,8 @@
 #include <ngx_http.h>
 
 
-/**/
 #define NGX_HTTP_CACHE_STALE         1
-#define NGX_HTTP_CACHE_AGED          2
-#define NGX_HTTP_CACHE_THE_SAME      3
-/**/
+#define NGX_HTTP_CACHE_UPDATING      2
 
 #define NGX_HTTP_CACHE_KEY_LEN       16
 
@@ -28,8 +25,6 @@ typedef struct {
 } ngx_http_cache_valid_t;
 
 
-/* ngx_http_file_cache_node_t takes exactly 64 bytes on FreeBSD/i386 */
-
 typedef struct {
     ngx_rbtree_node_t                node;
     ngx_queue_t                      queue;
@@ -41,8 +36,9 @@ typedef struct {
     unsigned                         uses:10;
     unsigned                         valid_msec:10;
     unsigned                         error:10;
-                                     /* 7 unused bits */
     unsigned                         exists:1;
+    unsigned                         updating:1;
+                                     /* 12 unused bits */
 
     ngx_file_uniq_t                  uniq;
     time_t                           expire;
@@ -68,7 +64,6 @@ struct ngx_http_cache_s {
     off_t                            length;
 
     ngx_uint_t                       min_uses;
-    ngx_uint_t                       uses;
     ngx_uint_t                       error;
     ngx_uint_t                       valid_msec;