From 82e82c31578d7b056b831aa2b0579efc9464e501 Mon Sep 17 00:00:00 2001
From: Joel Klinghed <the_jk@opera.com>
Date: Fri, 17 Jul 2020 16:09:00 +0200
Subject: Use less CPU in goma

Only re-draw when something changes and update once per 5 sec
---
 src/goma.cc | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

(limited to 'src')

diff --git a/src/goma.cc b/src/goma.cc
index c82920d..47f0a43 100644
--- a/src/goma.cc
+++ b/src/goma.cc
@@ -28,6 +28,14 @@ struct State {
   std::string msg_;
   uint64_t running_{0};
   uint64_t failed_{0};
+
+  bool operator==(State const& state) const {
+    if (error_ != state.error_)
+      return false;
+    if (error_)
+      return msg_ == state.msg_;
+    return running_ == state.running_ && failed_ == state.failed_;
+  }
 };
 
 class GomaPoll {
@@ -86,9 +94,11 @@ private:
 
       {
         std::unique_lock<std::mutex> lock(mutex_);
-        state_ = state;
-        io::write(pipe_, "s", 1);
-        cond_.wait_for(lock, std::chrono::seconds(1));
+        if (!(state_ == state)) {
+          state_ = state;
+          io::write(pipe_, "s", 1);
+        }
+        cond_.wait_for(lock, std::chrono::seconds(5));
         if (quit_)
           break;
       }
-- 
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