one shot poller

With WaitReadOneShot:
  - there is no need to do Unwait on connection activation, one less syscall per request;
  - this allows to make several listener threads over one epoll poller.

Turn option on for search daemons (check it turned on by default here https://a.yandex-team.ru/review/4372795/details).

1 files changed, 8 insertions, 0 deletions

diff --git a/library/cpp/http/server/options.h b/library/cpp/http/server/options.h
index 5976d58f32..8a83f4f6db 100644
--- a/library/cpp/http/server/options.h
+++ b/library/cpp/http/server/options.h
@@ -139,6 +139,12 @@ public:
         return *this;
     }
 
+    inline THttpServerOptions& SetOneShotPoll(bool v) {
+        OneShotPoll = v;
+
+        return *this;
+    }
+
     struct TAddr {
         TString Addr;
         ui16 Port;
@@ -174,4 +180,6 @@ public:
     TString ListenThreadName = "HttpListen";
     TString RequestsThreadName = "HttpServer";
     TString FailRequestsThreadName = "HttpServer";
+
+    bool OneShotPoll = false;
 };