taobao/tengine — pull request #128 by lifeibo (2012-11-26 09:04:12+00:00)
Title: Sysguard not work on mac os.

Mac os x does not support sysinfo system call, the call of ngx_getmeminfo will return NGX_ERROR forever. In this case, ngx_http_sysguard_update will return NGX_ERROR, so protect system by load will invalidate lost its meaning. This commit fixed this bug.