From 22d4b88edc1f3dfaacac58f7b9173d59e257ed6a Mon Sep 17 00:00:00 2001
From: Jeff Becker <jeff@i2p.rocks>
Date: Tue, 9 Nov 2021 11:20:53 -0500
Subject: [PATCH] make PumpLL idempotent to reduce cpu use a bit

---
 llarp/router/router.cpp | 19 +++++++++++--------
 llarp/router/router.hpp |  2 ++
 2 files changed, 13 insertions(+), 8 deletions(-)

diff --git a/llarp/router/router.cpp b/llarp/router/router.cpp
index e7eae19a1..2537ded55 100644
--- a/llarp/router/router.cpp
+++ b/llarp/router/router.cpp
@@ -69,6 +69,16 @@ namespace llarp
     _running.store(false);
     _lastTick = llarp::time_now_ms();
     m_NextExploreAt = Clock_t::now();
+    m_Pump = _loop->make_waker([this]() {
+      llarp::LogTrace("Router::PumpLL() start");
+      if (_stopping.load())
+        return;
+      paths.PumpDownstream();
+      paths.PumpUpstream();
+      _outboundMessageHandler.Tick();
+      _linkManager.PumpLinks();
+      llarp::LogTrace("Router::PumpLL() end");
+    });
   }
 
   Router::~Router()
@@ -245,14 +255,7 @@ namespace llarp
   void
   Router::PumpLL()
   {
-    llarp::LogTrace("Router::PumpLL() start");
-    if (_stopping.load())
-      return;
-    paths.PumpDownstream();
-    paths.PumpUpstream();
-    _outboundMessageHandler.Tick();
-    _linkManager.PumpLinks();
-    llarp::LogTrace("Router::PumpLL() end");
+    m_Pump->Trigger();
   }
 
   bool
diff --git a/llarp/router/router.hpp b/llarp/router/router.hpp
index 946bc8594..36bbbd2a4 100644
--- a/llarp/router/router.hpp
+++ b/llarp/router/router.hpp
@@ -76,6 +76,8 @@ namespace llarp
 
     path::BuildLimiter m_PathBuildLimiter;
 
+    std::shared_ptr<EventLoopWakeup> m_Pump;
+
     path::BuildLimiter&
     pathBuildLimiter() override
     {