1 files changed, 16 insertions, 2 deletions
diff --git a/src/libmain/progress-bar.cc b/src/libmain/progress-bar.cc
index 024259584..45b1fdfd1 100644
--- a/src/libmain/progress-bar.cc
+++ b/src/libmain/progress-bar.cc
@@ -72,6 +72,7 @@ private:
         uint64_t corruptedPaths = 0, untrustedPaths = 0;
 
         bool active = true;
+        bool paused = false;
         bool haveUpdate = true;
     };
 
@@ -107,7 +108,8 @@ public:
         stop();
     }
 
-    void stop() override
+    /* Called by destructor, can't be overridden */
+    void stop() override final
     {
         {
             auto state(state_.lock());
@@ -120,6 +122,18 @@ public:
         updateThread.join();
     }
 
+    void pause() override {
+        state_.lock()->paused = true;
+        writeToStderr("\r\e[K");
+    }
+
+    void resume() override {
+        state_.lock()->paused = false;
+        writeToStderr("\r\e[K");
+        state_.lock()->haveUpdate = true;
+        updateCV.notify_one();
+    }
+
     bool isVerbose() override
     {
         return printBuildLogs;
@@ -339,7 +353,7 @@ public:
         auto nextWakeup = std::chrono::milliseconds::max();
 
         state.haveUpdate = false;
-        if (!state.active) return nextWakeup;
+        if (state.paused || !state.active) return nextWakeup;
 
         std::string line;