# HG changeset patch
# User Dmitry Volyntsev <xeioex@nginx.com>
# Date 1458300450 -10800
# Node ID 043914d19be838fecea0a6381ab3cec991b081e7
# Parent  fc72784b1f52013d61a5a5ed56c5a7e83cf9fcf5
Cache: report error if slab allocator fails during cache loading.

diff --git a/src/http/ngx_http_cache.h b/src/http/ngx_http_cache.h
--- a/src/http/ngx_http_cache.h
+++ b/src/http/ngx_http_cache.h
@@ -153,6 +153,8 @@ struct ngx_http_file_cache_s {
 
     time_t                           inactive;
 
+    time_t                           fail_time;
+
     ngx_uint_t                       files;
     ngx_uint_t                       loader_files;
     ngx_msec_t                       last;
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
@@ -2094,6 +2094,12 @@ ngx_http_file_cache_add(ngx_http_file_ca
         fcn = ngx_slab_calloc_locked(cache->shpool,
                                      sizeof(ngx_http_file_cache_node_t));
         if (fcn == NULL) {
+            if (cache->fail_time != ngx_time()) {
+                cache->fail_time = ngx_time();
+                ngx_log_error(NGX_LOG_ALERT, ngx_cycle->log, 0,
+                           "could not allocate node%s", cache->shpool->log_ctx);
+            }
+
             ngx_shmtx_unlock(&cache->shpool->mutex);
             return NGX_ERROR;
         }