From: Valentin Bartenev <vbart@nginx.com>
Date: Mon, 25 Aug 2014 09:41:31 +0000 (+0400)
Subject: Access log: cancel the flush timer on graceful shutdown.
X-Git-Url: http://git.kaiwu.me/postgresql/log/contrib/postgres_fdw/postgres_fdw.c?a=commitdiff_plain;h=f9b99baed366b855cef24f3443be6337583ac0f3;p=nginx.git

Access log: cancel the flush timer on graceful shutdown.

Previously, it could prevent a worker process from exiting
for up to the configured flush timeout.
---

diff --git a/src/http/modules/ngx_http_log_module.c b/src/http/modules/ngx_http_log_module.c
index cec77e749..04aa27fda 100644
--- a/src/http/modules/ngx_http_log_module.c
+++ b/src/http/modules/ngx_http_log_module.c
@@ -744,10 +744,23 @@ ngx_http_log_flush(ngx_open_file_t *file, ngx_log_t *log)
 static void
 ngx_http_log_flush_handler(ngx_event_t *ev)
 {
+    ngx_open_file_t     *file;
+    ngx_http_log_buf_t  *buffer;
+
     ngx_log_debug0(NGX_LOG_DEBUG_EVENT, ev->log, 0,
                    "http log buffer flush handler");
 
-    ngx_http_log_flush(ev->data, ev->log);
+    if (ev->timedout) {
+        ngx_http_log_flush(ev->data, ev->log);
+        return;
+    }
+
+    /* cancel the flush timer for graceful shutdown */
+
+    file = ev->data;
+    buffer = file->data;
+
+    buffer->event = NULL;
 }
 
 
@@ -1411,6 +1424,7 @@ process_formats:
             buffer->event->data = log->file;
             buffer->event->handler = ngx_http_log_flush_handler;
             buffer->event->log = &cf->cycle->new_log;
+            buffer->event->cancelable = 1;
 
             buffer->flush = flush;
         }