improve ngx_slab_alloc() error logging

1 files changed, 11 insertions, 0 deletions

diff --git a/src/http/modules/ngx_http_limit_req_module.c b/src/http/modules/ngx_http_limit_req_module.c
index dac62ed15..36787b090 100644
--- a/src/http/modules/ngx_http_limit_req_module.c
+++ b/src/http/modules/ngx_http_limit_req_module.c
@@ -457,6 +457,7 @@ ngx_http_limit_req_init_zone(ngx_shm_zone_t *shm_zone, void *data)
 {
     ngx_http_limit_req_ctx_t  *octx = data;
 
+    size_t                     len;
     ngx_rbtree_node_t         *sentinel;
     ngx_http_limit_req_ctx_t  *ctx;
 
@@ -500,6 +501,16 @@ ngx_http_limit_req_init_zone(ngx_shm_zone_t *shm_zone, void *data)
 
     ngx_queue_init(ctx->queue);
 
+    len = sizeof(" in limit_req zone \"\"") + shm_zone->name.len;
+
+    ctx->shpool->log_ctx = ngx_slab_alloc(ctx->shpool, len);
+    if (ctx->shpool->log_ctx == NULL) {
+        return NGX_ERROR;
+    }
+
+    ngx_sprintf(ctx->shpool->log_ctx, " in limit_req zone \"%V\"%Z",
+                &shm_zone->name);
+
     return NGX_OK;
 }