[nginx] Events: made a failure to create a notification channel ...

[Maxim Dounin]

details:   http://hg.nginx.org/nginx/rev/67422a0a8ed2
branches:  stable-1.8
changeset: 6339:67422a0a8ed2
user:      Ruslan Ermilov <ru at nginx.com>
date:      Wed May 06 17:04:00 2015 +0300
description:
Events: made a failure to create a notification channel non-fatal.

This may happen if eventfd() returns ENOSYS, notably seen on CentOS 5.4.
Such a failure will now just disable the notification mechanism and let
the callers cope with it, instead of failing to start worker processes.
If thread pools are not configured, this can safely be ignored.

diffstat:

 src/event/modules/ngx_epoll_module.c |  2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diffs (12 lines):

diff --git a/src/event/modules/ngx_epoll_module.c b/src/event/modules/ngx_epoll_module.c
--- a/src/event/modules/ngx_epoll_module.c
+++ b/src/event/modules/ngx_epoll_module.c
@@ -329,7 +329,7 @@ ngx_epoll_init(ngx_cycle_t *cycle, ngx_m
 
 #if (NGX_HAVE_EVENTFD)
         if (ngx_epoll_notify_init(cycle->log) != NGX_OK) {
-            return NGX_ERROR;
+            ngx_epoll_module_ctx.actions.notify = NULL;
         }
 #endif