From ebb96b7fead08b64b8a771b9f0a3ff51820b7aaf Mon Sep 17 00:00:00 2001
From: Marcus Nilsson <brainbomb@gmail.com>
Date: Wed, 28 Jul 2021 00:23:34 +0200
Subject: [PATCH] SystemMonitor: Only update kill actions when pid changes

Return early from on_selection_change if the pid hasn't changed or we
get an invalid result from selected_id().
---
 Userland/Applications/SystemMonitor/main.cpp | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Userland/Applications/SystemMonitor/main.cpp b/Userland/Applications/SystemMonitor/main.cpp
index 5afeae9461..7e12aade14 100644
--- a/Userland/Applications/SystemMonitor/main.cpp
+++ b/Userland/Applications/SystemMonitor/main.cpp
@@ -353,8 +353,13 @@ int main(int argc, char** argv)
             process_properties_action->activate();
     };
 
+    static pid_t last_selected_pid;
+
     process_table_view.on_selection_change = [&] {
         pid_t pid = selected_id(ProcessModel::Column::PID);
+        if (pid == last_selected_pid || pid < 1)
+            return;
+        last_selected_pid = pid;
         bool has_access = can_access_pid(pid);
         kill_action->set_enabled(has_access);
         stop_action->set_enabled(has_access);